Attachment_3_-_Instruction_Manual_for_DECS-200N.pdf

INSTRUCTION MANUAL

FOR

DIGITAL EXCITATION CONTROL SYSTEM

DECS-200N

Publication: 9388800990 Revision: B 03/06

DECS-200N Introduction i

INTRODUCTION

This instruction manual provides information about the operation and installation of the DECS-200N Digital Excitation Control System. To accomplish this, the following information is provided:

• General Information and Specifications

• Controls and Indicators

• Functional Description

• Installation

• Maintenance

WARNING!

To avoid personal injury or equipment damage, only qualified personnel should perform the procedures in this manual.

NOTE

Be sure that the device is hard-wired to earth ground with no smaller than 12 AWG copper wire attached to the ground terminal on the rear of the unit case.

When the device is configured in a system with other devices, it is recommended to use a separate lead to the ground bus from each unit.

ii Introduction DECS-200N

First Printing: July 2005

Printed in USA

© 2005, 2006 Basler Electric, Highland Illinois 62249 USA

All Rights Reserved

March 2006

It is not the intention of this manual to cover all details and variations in equipment, nor does this manual provide data for every possible contingency regarding installation or operation. The availability and design of all features and options are subject to modification without notice. Should further information be required, contact Basler Electric.

BASLER ELECTRIC

ROUTE 143, BOX 269

HIGHLAND IL 62249 USA

http://www.basler.com, info@basler.com

PHONE +1 618.654.2341 FAX +1 618.654.2351

CONFIDENTIAL INFORMATION

of Basler Electric, Highland Illinois, USA. It is loaned for confidential use, subject to return on request, and with the mutual understanding that it will not be used in any manner detrimental to the interest of Basler Electric.

DECS-200N Introduction iii

REVISION HISTORY

The following information provides a historical summary of the changes made to the DECS-200N hardware, firmware, and software. The corresponding revisions made to this instruction manual (9388800990) are also summarized. Revisions are listed in chronological order.

Hardware Version and Date Change

A • Preproduction modifications B, 07/05 • Initial release C, 11/05 • Implemented new Digital circuit board to ease loading of firmware during production D, 12/05 • Incorporated firmware version 1.01 E, 01/06 • Operating-power frequency range extended to 500 Hz and split into three ranges.

Firmware

1.00, 07/05 • Initial release 1.01, 07/05 • Modified to accommodate firmware loading during production

1.01.03, 03/06 • Operating-power frequency range extended to 500 Hz and split into

BESTCOMS

1.00, 07/05 • Initial Release 1.00.01, 03/06 • Operating-power frequency range extended to 500 Hz and split into

Manual Revision and Date Change

—, 07/05 • Initial release A, 01/06 • Corrected RLY4 and RLY5 terminal numbering in Figure 4-9

• Corrected escutcheon part number listed in Section 4 B, 03/06 • Revised all operating power frequency ranges: 50 to 160 Hz, 161 to

420 Hz, and 421 to 500 Hz.

• Added Full-Load Continuous Excitation Current value of 20 Adc to

Table 1-2, Field Output Ratings.

• In Table 2-5, changed duration of message for BRIDGE BELOW 12

HZ from Clears 2 s after end of event to Maintained until reset.

• In Appendix B, removed description from unused register 47587. In registers 47306 and 47307, changed bit 2 description from safe mode activated to bridge <12 Hz.

iv Introduction DECS-200N

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DECS-200N Introduction v

CONTENTS

SECTION 1 • GENERAL INFORMATION................................................................................................. 1-1

SECTION 2 • HUMAN-MACHINE INTERFACE........................................................................................ 2-1

SECTION 3 • FUNCTIONAL DESCRIPTION............................................................................................ 3-1

SECTION 4 •INSTALLATION.................................................................................................................... 4-1

SECTION 5 • BESTCOMS SOFTWARE................................................................................................... 5-1

SECTION 6 • SETUP ................................................................................................................................ 6-1

SECTION 7 • MAINTENANCE .................................................................................................................. 7-1

APPENDIX A • SCR BRIDGE OUTPUT CALCULATIONS.......................................................................A-1

APPENDIX B • MODBUS™ COMMUNICATION......................................................................................B-1 vi Introduction DECS-200N

DECS-200N General Information i

SECTION 1 • GENERAL INFORMATION

TABLE OF CONTENTS

SECTION 1 • GENERAL INFORMATION.................................................................................................1-1

INTRODUCTION....................................................................................................................................1-1 FEATURES ............................................................................................................................................1-1

Functions ............................................................................................................................................1-1 Inputs and Outputs .............................................................................................................................1-1 Human-Machine Interface (HMI) ........................................................................................................1-2

APPLICATION........................................................................................................................................1-2 Control Power .....................................................................................................................................1-2 Operating Power.................................................................................................................................1-3 Sensing ...............................................................................................................................................1-3 Limiters ...............................................................................................................................................1-3 Internal Tracking Between DECS-200N Operating Modes ................................................................1-3 External Tracking and Transfer Between DECS-200N Units .............................................................1-3 Communication with a PC ..................................................................................................................1-3

MODEL AND STYLE NUMBER.............................................................................................................1-3 Style Number ......................................................................................................................................1-3

SPECIFICATIONS .................................................................................................................................1-4 Control Power .....................................................................................................................................1-4 Operating Power.................................................................................................................................1-4 Generator Voltage Sensing ................................................................................................................1-4 Generator Current Sensing.................................................................................................................1-5 Bus Voltage Sensing ..........................................................................................................................1-5 Accessory Inputs ................................................................................................................................1-5 Contact Inputs.....................................................................................................................................1-5 Communication Ports .........................................................................................................................1-5 Contact Outputs..................................................................................................................................1-6 Field Output ........................................................................................................................................1-6 Regulation...........................................................................................................................................1-7 Parallel Compensation........................................................................................................................1-7 Generator Overvoltage Protection......................................................................................................1-7 Generator Undervoltage Protection....................................................................................................1-7 Exciter Field Overvoltage....................................................................................................................1-7 Exciter Field Overcurrent ....................................................................................................................1-8 Exciter Diode Protection .....................................................................................................................1-8 Loss of Field Protection ......................................................................................................................1-8 Loss of Sensing Protection .................................................................................................................1-8 Soft Start Function ..............................................................................................................................1-8 Field Flashing Function.......................................................................................................................1-9 Voltage Matching ................................................................................................................................1-9 On-Line Overexcitation Limiting .........................................................................................................1-9 Off-Line Overexcitation Limiting .........................................................................................................1-9 Underexcitation Limiting ...................................................................................................................1-10 Metering ............................................................................................................................................1-10 Sequence of Event Recording (SER) ...............................................................................................1-11 Data Logging (Oscillography) ...........................................................................................................1-11 Type Tests ........................................................................................................................................1-11 Physical.............................................................................................................................................1-11 Agency Recognition..........................................................................................................................1-11 CE Compliance.................................................................................................................................1-11 Environment......................................................................................................................................1-11

Figures Figure 1-1. Block Diagram of Typical DECS-200N Application ................................................................. 1-2 Figure 1-2. DECS-200N Style Chart .......................................................................................................... 1-3 ii General Information DECS-200N

Tables Table 1-1. Operating Power Requirements ............................................................................................... 1-4 Table 1-2. Field Output Ratings ................................................................................................................. 1-6

DECS-200N General Information 1-1

SECTION 1 • GENERAL INFORMATION

INTRODUCTION

The DECS-200N Negative Forcing, Digital Excitation Control System is a microprocessor-based control device intended for generator power management. Programmability of system parameters and regulation settings enables the DECS-200N to be used in a wide variety of applications. The DECS-200N regulates the output voltage of a synchronous ac generator by controlling the current supplied to the generator exciter field. The DECS-200N output has a six-SCR (silicon controlled rectifier or thyristor) power stage that can supply up to 20 Adc of field current continuously and 40 Adc of forcing current for 10 seconds.

The full-inverting, negative forcing output can provide either positive and negative field forcing for optimal system performance.

FEATURES

DECS-200N systems have the following features and capabilities.

Functions

• Four control modes

– Automatic Voltage Regulation (AVR)

– Manual or Field Current Regulation (FCR)

– Power Factor (PF)

– Reactive Power (var)

• Voltage matching of the generator to the bus

• Generator paralleling with reactive droop compensation and reactive differential compensation

• Autotracking between operating modes and a second, optional DECS-200N

• Automatic transfer to an optional, backup DECS-200N

• Soft-start buildup with an adjustable ramp in AVR and FCR control modes

• One adjustment range or pre-position setpoint for each control mode

• Overexcitation limiting (OEL) and underexcitation limiting (UEL) in AVR, var, and PF control modes

• Twenty preprogrammed stability selections and one set of user-programmable stability parameters

• Underfrequency compensation or volts per hertz ratio limiting

• Ten protection features

– Field overvoltage

– Field overcurrent

– Generator overvoltage

– Generator undervoltage

– Loss of sensing voltage

– Generator frequency below 10 hertz

– Loss of field protection

– Exciter diode monitor

– Crowbar circuit

– Operating (bridge) power frequency below 12 hertz

• Data logging and event recording

Inputs and Outputs

• Single- or three-phase rms generator voltage sensing

• Single-phase rms bus voltage sensing

• Single-phase generator current sensing (1 or 5 amperes, nominal)

• Cross-current compensation input (1 or 5 amperes, nominal)

• Accessory inputs (±10 Vdc and 4 to 20 mAdc) provide proportional, remote control of the setpoint

• Eleven PLC-compatible contact sensing inputs for system interface

• Separate ac and dc control power inputs accommodate redundant power sources

• Full inverting, negative forcing, six-SCR output power stage rated at 20 Adc, continuous

• Seven output relays for system control or annunciation

– Two fixed function output relays

– Five user-programmable output relays—two of which are rated for tripping duty

1-2 General Information DECS-200N

Human-Machine Interface (HMI)

• Front panel HMI includes pushbutton controls, LED indicators, and a backlit, liquid-crystal display

(LCD)

• Windows®-based BESTCOMS software provides fast, simple DECS-200N setup and control

• Three communication ports

– Front-panel RS-232 port for communication with a PC using BESTCOMS software

– Right-side panel RS-232 port for dedicated communication with an optional, redundant

DECS 200N

– RS-485 port for communication with a remote terminal using Modbus™ protocol

APPLICATION

In the typical application shown in Figure 1-1, the DECS-200N controls the exciter field of a synchronous generator. Front panel controls and indicators make the system easy to operate locally; serial communication ports enable system operation from remote locations. The DECS-200N setup, operation, and safety information presented in this manual should be read and understood before implementing your application. For detailed application assistance, contact the Basler Electric Technical Sales Support department or your local sales representative.

Figure 1-1. Block Diagram of Typical DECS-200N Application

Control Power

A dc control power input and an ac control power input enable a redundant control power source to be used with the DECS-200N. A DECS-200N with style number CX accepts control power inputs of 125 Vdc and 120 Vac. A DECS-200N with style number LX accepts control power inputs of 24 Vdc and 24 Vac or 48 Vdc and 24 Vac.

DECS-200N General Information 1-3

Operating Power

Operating power for the full inverting, negative forcing, six SCR power stage is typically obtained from the generator output through a power transformer. Alternately, operating power can be supplied from a permanent magnet generator (PMG).

Sensing

The DECS-200N senses generator and bus voltage through external voltage transformers. Generator current is sensed through an external current transformer. An additional current sensing input is available for cross-current compensation (reactive differential) applications. Field voltage and field current levels are sensed internally.

Limiters

Integrated overexcitation and underexcitation limiters (OEL and UEL) are available. The OEL provides both on-line and off-line protection. A volts per hertz ratio limiter and stator current limiter are also available.

Internal Tracking Between DECS-200N Operating Modes

In applications using a single DECS-200N, the DECS-200N can be programmed so that the inactive operating modes track the active operating mode. Operating modes include AVR, FCR, PF, and var. If the excitation system is normally operating on-line in Internal mode and a loss of sensing occurs, the DECS- 200N could be transferred to Manual (FCR) mode where the loss of sensing has no impact on the exciter’s ability to maintain proper excitation levels. While performing routine testing of the DECS-200N in backup mode, the internal tracking feature allows a transfer to an inactive mode that will result in no disturbance to the system.

External Tracking and Transfer Between DECS-200N Units

For critical applications, a second DECS-200N can provide backup, excitation control. The DECS-200N allows for excitation redundancy by providing external tracking and transfer provisions between DECS- 200N units. The secondary DECS-200N operating modes can be programmed to track the primary DECS-200N operating mode. Proper redundant excitation system design allows for removal of the failed system. Periodic testing of the backup system must be performed to ensure that it is operational and can be put into service without warning.

Communication with a PC

BESTCOMS software enables communication between a PC and the DECS-200N (front panel RS-232 port). BESTCOMS simplifies programming of setpoints and ranges and allows for step changes to facilitate proper stability settings. BESTCOMS also provides easy start and stop control and operator adjustment of the excitation system with real-time metering. BESTCOMS is provided with the DECS-200N as part of the instruction manual/software package.

MODEL AND STYLE NUMBER

DECS-200N electrical characteristics and operational features are defined by a combination of letters and numbers that make up the style number. The model number, together with the style number, describe the options included in a specific device and appear on a label affixed to the rear panel.

Style Number

The style number identification chart in Fig-ure 1-2 defines the electrical characteristics and operational features available in the

DECS-200N.

Figure 1-2. DECS-200N Style Chart

1-4 General Information DECS-200N

SPECIFICATIONS

DECS-200N electrical and physical characteristics are listed in the following paragraphs.

Control Power

DC Input Nominal Voltage: 24/48 Vdc (style LX) or 125 Vdc (style CX) Voltage Range: 18 to 60 Vdc (style LX) or 90 to 150 Vdc (style CX) Burden: 30 W maximum Terminals: B13 (BAT–), B14 (BAT+)

AC Input

Isolation transformer for ac input is required when dual control power sources are used.

Nominal Voltage: 24 Vac (style LX) or 120 Vac (style CX) Voltage Range: 20 to 40 Vac (style LX) or 82 to 132 Vac (style CX) Frequency: 50/60 Hz Burden: 40 VA maximum Terminals: B11 (N), B12 (L)

Operating Power Configuration: 1-phase or 3-phase Voltage Range: 80 to 277 Vac ∗ Frequency Range Style X1: 50 to 160 Hz Style X2: 161 to 420 Hz Style X3: 421 to 500 Hz Terminals: C5 (A), C6 (B), C7 (C)

∗ To achieve the proper bridge output, the appropriate operating power input voltage must be applied.

Table 1-1 lists the required nominal operating power voltage and configuration required to obtain 63 Vdc or 125 Vdc continuous field power.

Table 1-1. Operating Power Requirements

Parameter For 63 Vdc Continuous

Applications For 125 Vdc Continuous

Applications Input Power Configuration † 1-Phase 3-Phase 1-Phase 3-Phase Nominal Input Voltage 208 Vac 120 Vac 240 Vac Minimum Residual Voltage for Buildup 24 Vac 12 Vac 24 Vac Operating Power Input Burden at 20 Adc Excitation Output

4,160 VA 3,400 VA

Not Recommended 6,800 VA

† Refer to Section 3, Functional Description, Protection Functions, Exciter Diode Monitor (EDM) for information about determining the operating power configuration when applied to brushless generators.

Generator Voltage Sensing Type: 1-phase or 3-phase, four automatically selected ranges Burden: <1 VA per phase Terminals: A1 (E1), A2 (E2), A3 (E3)

50 Hz Sensing Range 1: 100 Vac (85 to 127 Vac) Range 2: 200 Vac (170 to 254 Vac) Range 3: 400 Vac (340 to 508 Vac) Range 4: 500 Vac (425 to 625 Vac)

60 Hz Sensing Range 1: 120 Vac (94 to 153 Vac) Range 2: 240 Vac (187 to 305 Vac) Range 3: 480 Vac (374 to 600 Vac) Range 4: 600 Vac (510 to 660 Vac)

DECS-200N General Information 1-5

Generator Current Sensing Ranges: 1 Aac, 5 Aac nominal Inputs: B-phase, cross-current compensation Frequency: 50/60 Hz Burden: <1 VA

1 Aac Sensing Maximum Continuous Rating: 2 Aac Terminals B-Phase Sensing: B4 (CT B 1 AMP), B6 (CT B COM) Cross-Current Comp.: B1 (CT CC 1 AMP), B3 (CT CC COM)

5 Aac Sensing Maximum Continuous Rating: 10 Aac Terminals B-Phase Sensing: B5 (CT B 5 AMP), B6 (CT B COM) Cross-Current Comp.: B2 (CT CC 5 AMP), B3 (CT CC COM)

Bus Voltage Sensing Type: 1-phase (A–C), four automatically selected ranges Ranges: Identical to generator voltage sensing Burden: <1 VA Terminals: A4 (B1), A5 (B3)

Accessory Inputs Current Input Range: 4 to 20 mAdc Terminals: A6 (I+), A7 (I–)

Voltage Input Range: –10 to +10 Vdc Terminals: A9 (+), A10 (–)

Contact Inputs Type: Dry contact, accept PLC open-collector outputs Interrogation Voltage: 12 Vdc

Terminal Assignments Start: A22, A23 Stop: A24, A25 Auto (AVR): A26, A27 Manual (FCR): A28, A29 Raise: A30, A31 Lower: A32, A33 Pre-Position: A34, A35 Unit/Parallel (52L/M): A36, A37 Var/PF (52J/K): A38, A39 Secondary Enable: A40, A41 Alarm Reset: A42, A43

Communication Ports

COM 0

Type: RS-232, full duplex Interface: DB-9 connector Location: Front panel

COM 1

Type: RS-232, full duplex Interface: DB-9 connector Location: Right-side panel

1-6 General Information DECS-200N

COM 2

Type: RS-485, half-duplex Interface: Screw terminals Location: Left-side panel Terminals: A44 (A), A45 (B), A46 (C)

Communication Parameters Baud

COM 0: 19200

COM 1, COM 2: 1200 to 19200 Data Bits: 8 Parity: None Stop Bits: 1 (COM 0, COM 1) or 2 (COM 2)

Contact Outputs

Start/Stop, Watchdog, Relays 1, 2, and 3 Make and Break Ratings 24 Vdc: 8.0 Adc 48 Vdc: 0.7 Adc 125 Vdc: 0.2 Adc 120/240 Vac: 10.0 Aac Carry Ratings 24/48/125 Vdc: 8.0 Adc 120/240 Vac: 10.0 Aac Terminal Assignments Start/Stop: A11, A12 (ON/OF) Watchdog: A13 (WTCH1 (NC)), A14 (WTCH (COM)), A15 (WTCH2 (NO)) Relay 1: A16, A17 (RLY1) Relay 2: A18, A19 (RLY2) Relay 3: A20, A21 (RLY3)

Relays 4 and 5 Make Rating: 30 Adc for 0.2 s Carry Rating: 7 Adc Break Rating: 0.3 Adc at 125 or 250 Vdc (L/R = 0.04 maximum), resistive or inductive Terminal Assignments Relay 4: B9, B10 (RLY4) Relay 5: B7, B8 (RLY5)

Field Output Terminals: C1 (F–), C2 (F+)

Table 1-2 lists the field output capabilities of the DECS-200N. In order to achieve the listed forcing capabilities, the proper, nominal input voltage must be applied to the DECS-200N operating power terminals (in the appropriate configuration). The impedance of the operating power source may affect the levels of the positive and negative forcing voltage. The forcing values listed assume a source impedance of 10%.

Table 1-2. Field Output Ratings

Parameter For 63 Vdc Continuous

Applications For 125 Vdc Continuous

Applications Input Power Configuration 1-Phase 3-Phase 1-Phase 3-Phase

Nominal Input Voltage 208 Vac 120 Vac 240 Vac Full-Load Continuous Excitation Voltage

63 Vdc 63 Vdc 125 Vdc

Full-Load Continuous Excitation Current

20 Adc 20 Adc 20 Adc

Maximum Positive Forcing Voltage 130 Vdc 120 Vdc 240 Vdc

Max. Negative Forcing Voltage –105 Vdc –100 Vdc –200 Vdc

Maximum Forcing Current 40 Adc 40 Adc 40 Adc

Minimum Field Resistance 3.15 Ω 3.15 Ω

Not Recommended

6.25 Ω

DECS-200N General Information 1-7

Regulation

AVR Operating Mode Setpoint Range: 70 to 110% of rated generator voltage Regulation Accuracy: ±0.25% over load range at rated PF with constant generator frequency and ambient temperature Steady-State Stability: ±0.25% over the load range at rated PF with constant generator frequency and ambient temperature Temperature Drift: ±0.5% between 0 and 50°C at constant load and generator frequency

FCR Operating Mode Setpoint Range: 0 to 20 Adc Regulation Accuracy: ±1.0% of the nominal value for 10% of the power input voltage change or

20% of the field resistance change. Otherwise, ±5.0%.

Var Operating Mode Setpoint Range: –100% (leading) to +100% (lagging) of the generator nominal apparent power Regulation Accuracy: ±2.0% of the nominal generator apparent power rating at the rated generator frequency

Power Factor Operating Mode Setpoint Range: 0.5 to 1.0 (lagging) and –0.5 to –1.0 (leading) Regulation Accuracy: ±0.02 PF of the PF setpoint for the real power between 10 and 100% at the rated frequency

Parallel Compensation

Modes: Reactive Droop, Line Drop, and Reactive Differential (Cross-Current) ∗ Burden∗: Can exceed 1 VA if external resistors are added to the CT circuit for cross-current compensation.

Setpoint Range Reactive Droop: 0 to 30% Line Drop: 0 to –30%

Generator Overvoltage Protection

Pickup Range: 0 to 30,000 Vac Increment: 1 Vac

Time Delay Range: 0.1 to 60 s Increment: 0.1 s

Generator Undervoltage Protection

Pickup Range: 0 to 30,000 Vac Increment: 1 Vac

Time Delay Range: 0.5 to 60 s Increment: 0.1 s

Exciter Field Overvoltage

Pickup Range: 1 to 325 Vdc Increment: 1 Vdc

1-8 General Information DECS-200N

Time Delay Range: 0.2 to 30 s Increment: 0.1 s

Exciter Field Overcurrent

Pickup Range: 0.1 to 40 Adc Increment: 0.1 Adc

Time Delay Range: 0.1 to 20 Increment: 0.1

Exciter Diode Protection

Pole Ratio Range: 1 to 10 (0 if unknown) Increment: 0.01

Ripple Threshold Open, Shorted Diode Range: 0 to 100% Increment: 0.1%

Time Delay Open Diode Range: 10 to 60 s Shorted Diode Range: 5 to 30 s Increment: 0.1 s

Open and Shorted Diode Inhibit Levels Range: 0 to 100% or <1.5 Adc field current <45 Hz and >70 Hz generator frequency

For proper detection of an open diode on a brushless exciter, the following criteria must be met:

• The ratio between the number of generator poles and exciter poles should be between 1.5 and 10.

(Pole Ratio = Number of Exciter Poles ÷ Number of Generator Poles)

• Three-phase operating power is required when input voltage is supplied from the generator output (shunt powered).

Loss of Field Protection

Pickup Range: 0 to 3,000,000 kvar Increment: 1 kvar

Time Delay Range: 0 to 9.9 s Increment: 0.1 s

Loss of Sensing Protection

Pickup Unbalanced Generator Voltage: 0 to 100% Balanced Generator Voltage: 0 to 100%

Time Delay Range: 0 to 30 s Increment: 0.1 s

Soft Start Function Bias Level Range: 0 to 90% Increment: 1%

DECS-200N General Information 1-9

Time Delay Range: 1 to 7,200 s Increment: 0.1 s

Field Flashing Function

Dropout Level Range: 0 to 100% Increment: 0.1%

Maximum Flashing Time Range: 0 to 50 s Increment: 0.1 s

Voltage Matching

Generator rms voltage is matched with the bus rms voltage to within ±0.5% of the generator voltage.

Voltage Matching Band Range: 0 to 20% of nominal Increment: 0.01%

Voltage Matching Level (Generator to Bus) Range: 90 to 120% Increment: 0.1%

On-Line Overexcitation Limiting Response Time: <3 cycles

Summing Point Limiting High Current Level Pickup Range: 0 to 40 Adc Pickup Increment: 0.1 Adc Time Range: 0 to 10 s Time Increment: 1 s Medium Current Level Pickup Range: 0 to 30 Adc Pickup Increment: 0.1 Adc Time Range: 0 to 120 s Time Increment: 1 s Low Current Level Pickup Range: 0 to 20 Adc Pickup Increment: 0.1 Adc Time Range: continuous

Takeover Style Limiting High Current Level Pickup Range: 0 to 40 Adc Pickup Increment: 0.1 Adc Low Current Level Pickup Range: 0 to 20 Adc Pickup Increment: 0.1 Adc Time Dial Range: 0.1 to 20 Increment: 0.1

Off-Line Overexcitation Limiting Response Time: <3 cycles

Summing Point Limiting High Current Level Pickup Range: 0 to 40 Adc Pickup Increment: 0.1 Adc

1-10 General Information DECS-200N

Time Range: 0 to 10 s Time Increment: 1 s Low Current Level Pickup Range: 0 to 20 Adc Pickup Increment: 0.1 Adc Time Range: continuous

Takeover Style Limiting High Current Level Pickup Range: 0 to 40 Adc Pickup Increment: 0.1 Adc Low Current Level Pickup Range: 0 to 20 Adc Pickup Increment: 0.1 Adc Time Dial Range: 0.1 to 20 Increment: 0.1

Underexcitation Limiting Adjustment Range: 0 to 100% of the generator rated apparent power (kvar) at 0 kW real power. UEL can be customized to generator curve capability.

Metering

Generator Voltage Range: 0 to 160% of nominal Accuracy (at 50/60 Hz): <1% of nominal or metered voltage, whichever is greater

Generator Current Range: 0 to 200% of nominal Accuracy <1% of nominal or metered current, whichever is greater

Generator Frequency Range: 10 to 90 Hz Accuracy: ±0.1 Hz

Bus Voltage Range: 0 to 160% of nominal Accuracy (at 50/60 Hz): <1% of nominal or metered voltage, whichever is greater

Bus Frequency Range: 10 to 90 Hz Accuracy: ±0.1 Hz

Phase Angle

Range: –90 to +90° Accuracy: ±1.0°

Field Voltage Range: –375 to 375 Vdc Accuracy: ±1.25 Vdc or ±1.0% of metered voltage, whichever is greater

Field Current Range: 0 to 60 Adc Accuracy: ±0.2 Adc or ±1.0% of metered voltage, whichever is greater

Power Factor Range: –0.5 to +0.5 (0.5 leading to 0.5 lagging) Accuracy: <0.02 PF

Real Power and Reactive Power Range: 0 to 200% of nominal Accuracy: <1.0% of nominal or metered power, whichever is greater

DECS-200N General Information 1-11

Sequence of Event Recording (SER) A 127 event report is stored in volatile memory and retrievable through BESTCOMS software. An SER can be triggered by input/output status changes, system operating status changes, or alarm annunciations.

Data Logging (Oscillography) Up to 8 records, each record logging up to 6 variables, are stored in volatile memory. The sampling rate is 600 data points per log with up to 599 pre-trigger data points recorded at 4 millisecond to 10 second intervals (2.4 to 6,000 second total log duration).

Type Tests Shock: Withstands 15 G in three perpendicular planes Vibration: Withstands 5 G from 5 to 500 Hz Humidity: IEC 68-1, IEC 68-2-28 Salt Fog: MIL-STD-810F, Method 509.4 Dielectric Strength: IEEE 421.3

Physical Weight: 14.0 lb (6.35 kg) Size: Refer to Section 4, Installation

Agency Recognition cURus recognition per UL Standard 508, File E97035 and CSA Standard C22.2 No. 14

CE Compliance

The DECS-200N meets the criteria set forth by the following standards.

EN 60068-2-6: Vibration (sinusoidal) EN 55011: Electromagnetic Disturbance Characteristics EN 61000-4-2: Electrostatic Discharge Immunity EN 61000-4-3: Radiated Radio Frequency Immunity EN 61000-4-4: Electrical Fast Transient/Burst Immunity EN 61000-4-5: Surge Immunity EN 61000-4-6: Conducted Radio Frequency Immunity EN 61000-4-8: Power Frequency Magnetic Field Immunity EN 61000-4-11: Voltage Dips and Interruption Immunity

Environment

Operating Temperature: –40 to 60°C (–40 to 140°F) ∗ Storage Temperature: –40 to 85°C (–40 to 185°F)

∗ Applies to altitudes up to 3,300 feet (1,006 meters). For every 1,000 feet (305 meters) above 3,300 feet, de-rate the maximum operating temperature by 2°C (35.6°F).

1-12 General Information DECS-200N

DECS-200N Human-Machine Interface i

SECTION 2 • HUMAN-MACHINE INTERFACE

SECTION 2 • HUMAN-MACHINE INTERFACE........................................................................................2-1

INTRODUCTION....................................................................................................................................2-1 FRONT PANEL ......................................................................................................................................2-1 MENU SYSTEM .....................................................................................................................................2-2

Menu Navigation.................................................................................................................................2-2 Menu Structure ...................................................................................................................................2-2 Setting Definitions.............................................................................................................................2-13

EDITING SETTINGS............................................................................................................................2-20 Screens with Special Editing Modes ................................................................................................2-20

PASSWORD PROTECTION................................................................................................................2-21 METERING SCREEN ..........................................................................................................................2-22

Metering Values................................................................................................................................2-22 Alarms Message ...............................................................................................................................2-22 Setpoint.............................................................................................................................................2-23 Percent of Range..............................................................................................................................2-23 Operating Mode ................................................................................................................................2-23

Figures Figure 2-1. Front Panel HMI ...................................................................................................................... 2-1 Figure 2-2. Operating Modes Menu........................................................................................................... 2-3 Figure 2-3. Setpoints Menu........................................................................................................................ 2-4 Figure 2-4. Loop Gains Menu .................................................................................................................... 2-5 Figure 2-5. Metering Menu......................................................................................................................... 2-6 Figure 2-6. Protection Menu ...................................................................................................................... 2-7 Figure 2-7. Limiters Menu .......................................................................................................................... 2-8 Figure 2-8. System Parameters Menu – Part 1 of 4 .................................................................................. 2-9 Figure 2-9. System Parameters Menu – Part 2 of 4 ................................................................................ 2-10 Figure 2-10. System Parameters Menu – Part 3 of 4 .............................................................................. 2-11 Figure 2-11. System Parameters Menu – Part 4 of 4 .............................................................................. 2-12 Figure 2-12. General Settings Menu........................................................................................................ 2-13 Figure 2-13. Metering Screen Information ............................................................................................... 2-22

Tables Table 2-1. Front Panel HMI Descriptions................................................................................................... 2-1 Table 2-2. Automatic Stability Range Gain Settings Index...................................................................... 2-15 Table 2-3. Settings Protected by Setpoint Password .............................................................................. 2-21 Table 2-4. Metering Screen Information .................................................................................................. 2-22 Table 2-5. Annunciation Messages ......................................................................................................... 2-23 Table 2-6. Setpoint Field Operating Mode Cross-Reference .................................................................. 2-23 ii Human-Machine Interface DECS-200N

DECS-200N Human-Machine Interface 2-1

SECTION 2 • HUMAN-MACHINE INTERFACE

INTRODUCTION

This section describes the DECS-200N human-machine interface (HMI), illustrates how to navigate through the menu screens, and explains how the HMI is used to view and change settings.

FRONT PANEL

DECS-200N controls and indicators are illustrated in Figure 2-1 and described in Table 2-1. The locators and descriptions of Table 2-1 correspond to the locators shown in Figure 2-1.

Figure 2-1. Front Panel HMI

Table 2-1. Front Panel HMI Descriptions

Locator Description

A Display. The display consists of a 128 by 64 pixel, liquid crystal display (LCD) with LED backlighting. It serves as a local source of information provided by the DECS-200N. The LCD displays operations, setpoints, loop gains, metering, protection functions, system parameters, and general settings.

B Pre-Position LED. This LED lights when the active mode setpoint is at the pre-position (predefined) setting.

2-2 Human-Machine Interface DECS-200N

Locator Description

C Lower Limit LED. This LED lights when the active mode setpoint decreases to the minimum value.

D Upper Limit LED. This LED lights when the active mode setpoint increases to the maximum value.

E Scrolling Pushbuttons. These four buttons are used to scroll up, down, left, and right through the menu tree displayed on the front panel display (locator A). During an editing session, the left and right scrolling pushbuttons select the variable to be changed and the up and down scrolling pushbuttons change the value of the variable.

F Reset Pushbutton. This button cancels editing sessions, resets alarm annunciations and latched alarm relays, and can be used for quick access to the metering screen.

G Communication Port. This RS-232 port has a female DECS-B-9 connector for local communication with a PC operating BESTCOMS software (supplied with the DECS-200N).

H Edit Pushbutton. Pressing this button starts an editing session and enables changes to DECS- 200N settings. When the Edit pushbutton is pressed to open an editing session, an LED on the button lights. At the conclusion of the editing session, the Edit pushbutton is pressed to save the setting changes and the LED turns off.

I Null Balance LED. This LED lights when the setpoint of the inactive operating modes (AVR, FCR, var, or PF) matches the metered value.

J Internal Tracking LED. This LED lights when any inactive mode (AVR, FCR, var, or PF) is tracking the setpoint of the active mode to achieve a “bumpless” transfer when changing active modes.

MENU SYSTEM

The front panel menu system consists of a network of screens that enable the user to edit DECS-200N settings and view system parameters.

Menu Navigation

Movement through the front panel menu system is achieved by pressing the four scrolling pushbuttons (locator E in Figure 2-1).

Navigation aids assist the user in moving from screen to screen and are provided at the top and bottom lines of each screen.

The top line of each screen contains the menu path which is similar to the file path on a PC. When the menu path exceeds the width of the LCD, the first part of the menu path is replaced with two periods (..)

so that the last part of the path remains visible.

The bottom line indicates which menu screens can be accessed from the current screen by using the left, lower, or right scrolling pushbuttons. The screens accessed by the left, lower, and right scrolling push-buttons are indicated by a <, v, and > symbol followed by an abbreviated menu name.

The front panel Reset pushbutton (locator F in Figure 2-1) provides a shortcut to the metering screen when a settings editing session is not in progress.

Menu Structure

The front panel menu system has eight branches:

1. Operating. Start/stop, operating mode, pre-position setpoint status, and tracking status.

2. Setpoints. Mode setting values such as AVR, FCR, droop, var, and power factor.

3. Loop Gains. PID settings.

4. Metering. Real-time metering of user-selected values and alarm messages.

5. Protection. Protective function setting parameters.

6. Limiters. System limiters such as overexcitation, underexcitation, and stator current.

7. System Parameters. The system parameters menu consists of nine sub-menus:

DECS-200N Human-Machine Interface 2-3

a. Generator Data

b. Exciter Data

c. Transformers

d. Configuration

e. Output Contacts

f. Traverse Rates

g. Pre-Position Modes

h. Startup

i. Tracking

8. General Settings. Communication port parameters, real-time clock setup, and LCD contrast.

From the DECS-200N title screen, the Operating menu branch is accessed first by pressing the down scrolling pushbutton. Then, the remaining branches are accessed by pressing the right or left push-buttons.

The menu system structure is illustrated in Figures 2-2 through 2-11. A letter at the upper, right corner of each screen indicates the security access level required to edit the screen’s settings. G indicates global access, S indicates setpoint access, and N indicates that security access is not applicable.

Figure 2-2. Operating Modes Menu

2-4 Human-Machine Interface DECS-200N

Figure 2-3. Setpoints Menu

DECS-200N Human-Machine Interface 2-5

Figure 2-4. Loop Gains Menu

2-6 Human-Machine Interface DECS-200N

Figure 2-5. Metering Menu

DECS-200N Human-Machine Interface 2-7

Figure 2-6. Protection Menu

2-8 Human-Machine Interface DECS-200N

Figure 2-7. Limiters Menu

DECS-200N Human-Machine Interface 2-9

Figure 2-8. System Parameters Menu - Part 1 of 4

2-10 Human-Machine Interface DECS-200N

Figure 2-9. System Parameters Menu - Part 2 of 4

DECS-200N Human-Machine Interface 2-11

Figure 2-10. System Parameters Menu - Part 3 of 4

2-12 Human-Machine Interface DECS-200N

Figure 2-11. System Parameters Menu - Part 4 of 4

DECS-200N Human-Machine Interface 2-13

Figure 2-12. General Settings Menu

Setting Definitions

The following paragraphs describe the settings and adjustments available through the front panel menu system. Parameters are organized by setting screen. Screens that contain no adjustable parameters are not listed.

\D200\OPER\OPERATE_1

START/STOP: enables and disables DECS-200N excitation control

AVR OR FCR: selects the regulation mode. AVR for automatic voltage regulation or FCR for field current regulation (Manual mode)

PF OR VAR: selects the control mode. OFF for non, VAR for var control, or PF for power factor control

LOAD COMP: selects the load compensation type. OFF to disable, ON to enable

PREPOSITION: enables and disables the pre-position function. OFF to disable, ON to enable

\D200\OPER\OPERATE_2

VOLT MATCH: enables and disables voltage matching

INT TRACK: enables and disables internal tracking between DECS-200N modes

EXT TRACK: enables and disables external tracking between two DECS-200N units

UF OR V/Hz: selects either underfrequency or volts per hertz limiting

\D200\SETPT\MODE_SET

AVR MODE: the automatic voltage regulation setpoint in actual generator voltage

FCR MODE: the field current regulation setpoint in amperes

DROOP: the amount of voltage droop, expressed as a percentage of rated generator voltage when the kvar load numerically equals the rated kW var MODE: the var controller regulation setpoint in vars

PF MODE: the power factor controller regulation setpoint

2-14 Human-Machine Interface DECS-200N

..\MODES-RANGE_1

FINE V BD: the adjustable voltage band (var volt band) around the generator output voltage. Expressed as a percentage of rated generator voltage when the var/PF mode is active.

AVR MIN: the minimum automatic voltage regulation setpoint. Expressed as a percentage of the rated generator voltage.

AVR MAX: the maximum automatic voltage regulation setpoint. Expressed as a percentage of the rated generator voltage.

FCR MIN: the minimum field current regulation setpoint. Expressed as a percentage of the rated field current.

FCR MAX: the maximum field current regulation setpoint. Expressed as a percentage of the rated field current.

\D200\SETPT\PREP_SET

The current control mode operating setpoint is driven to the pre-position value when the unit receives a pre-position command.

AVR MODE: the automatic voltage regulator setpoint pre-position value

FCR MODE: the field current regulation setpoint pre-position value var MODE: the var controller setpoint pre-position value

PF MODE: the power factor setpoint pre-position value

..\MODES\RANGE_2

MIN VAR OUT: the minimum generated var setpoint expressed as a numerical percentage of rated generator kW (negative for absorbing)

MAX VAR OUT: the maximum generated var setpoint expressed as a numerical percentage of rated generator kW (negative for absorbing)

MAX LAG PF: maximum lagging power factor setpoint

MAX LEAD PF: maximum leading power factor setpoint

V MATCH BD: voltage matching band. Allows the voltage matching function to activate if the bus voltage is within this band. This setting is a numerical percentage of rated generator voltage (Gen to Bus).

V MATCH REF: generator to bus PT matching level. Expressed as a percentage of the bus voltage.

\D200\GAIN\REG_GAIN1

STAB RANGE: the index number for the internally defined PID table. Table 2-2 lists the automatic, predefined stability gain settings for the exciter field and the 20 stability settings.

AVR/FCR Kp: proportional gain coefficient used in the AVR/FCR loop

AVR/FCR Ki: integral gain coefficient used in the AVR/FCR loop

AVR/FCR Kd: derivative gain coefficient used in the AVR/FCR loop

AVR/FCR Td: derivative time constant used in AVR/FCR loop

\D200\GAIN\REG_GAIN2

AVR Kg: loop gain used in AVR mode

FCR Kg: loop gain used in FCR mode

\D200\GAIN\LIM_GAINS

OEL Ki: integral gain coefficient used in the overexcitation limiter loop

OEL Kg: loop gain used in the overexcitation limiter

UEL Ki: integral gain coefficient used in the underexcitation limiter loop

UEL Kg: loop gain used in the underexcitation limiter

SCL Ki: integral gain coefficient used in the stator current limiter

SCL Kg: loop gain used in the stator current limiter

DECS-200N Human-Machine Interface 2-15

Table 2-2. Automatic Stability Range Gain Settings Index

Excitation Mode Setting

Generator Open Circuit Time

Constant (T’do)

Generator Exciter Time

Constant (Texc) Kp Ki Kd

1 1.0 0.17 42.2 115.2 4.433

2 1.5 0.25 66.5 150.0 8.750

3 2.0 0.33 87.16 167.9 13.670

4 2.5 0.42 104.5 175.8 18.960

5 3.0 0.50 119.0 177.8 24.50

6 3.5 0.58 131.3 176.4 30.220

7 4.0 0.67 141.8 173.1 36.060

8 4.5 0.75 150.9 168.8 42.000

9 5.0 0.83 158.8 163.9 48.010

10 5.5 0.92 165.7 158.7 54.080

11 6.0 1.00 171.8 153.6 60.200

12 6.5 1.08 177.2 148.5 66.350

13 7.0 1.17 182.1 143.6 72.540

14 7.5 1.25 186.5 138.9 78.750

15 8.0 1.33 190.5 134.4 84.980

16 8.5 1.42 194.1 130.1 91.230

17 9.0 1.50 197.4 125.9 97.500

18 9.5 1.58 200.4 122.1 103.800

19 10.0 1.67 203.2 118.4 110.100

E xc ite r

F ie ld

20 10.5 1.75 205.7 114.8 116.400

\D200\GAIN\CTL_GAINS

PF Ki: integral gain coefficient used in the power factor controller

PF Kg: loop gain used for the power factor controller var Ki: integral gain coefficient used in the var controller var Kg: loop gain used for the var controller

V MATCH Kg: loop gain used for the voltage matching function.

\D200\METER\ADJUST

1st, 2nd, and 3rd Metering Fields: each field can be configured by the user to display any one of several metering quantities See Table 2-3 for list of available metering quantities.

\D200\PROT\UNDERFREQ

CORNR FREQ: the corner frequency for the underfrequency curve

UF SLOPE: the slope of the underfrequency curve

..\PROT\PROT_ENABLE1

FIELD OV: field overvoltage detection enable

FIELD OC: field overcurrent detection enable

STATOR OV: generator output overvoltage detection enable

STATOR UV: generator output undervoltage detection enable

NO SENSING: loss of voltage sensing detection enable

NO SNS–>FCR: enables/disables a transfer to FCR mode when a loss of voltage sensing is detected.

Loss of voltage sensing detection must also be enabled for this feature to work.

2-16 Human-Machine Interface DECS-200N

..\PROT\PROT_ENAB2

EX DIOD OD: enables and disables open exciter diode detection

EX DIOD SD: enables and disables shorted exciter diode detection

LOSS FIELD: enables and disables loss of field protection

\D200\PROT\PROT_LEVEL1

FIELD OV: field overvoltage threshold

FIELD OC: field overcurrent base value (100%)

STATOR OV: generator output overvoltage threshold

STATOR UV: generator output undervoltage threshold

EDM OD RIPL: open exciter diode ripple threshold

EDM SD RIPL: shorted…