TECH LIBRARY 1 SVPP Supplier Manuals Everight Alliance S1A_datasheet_022610.pdf

The Everight S1A DIN rail module ends the usual difficulties that accompany AC-LVDT set up with a built-in null indicator and simple front panel pushbuttons to set zero and full scale. Engineered to work with the widest range of AC-LVDTs and inductive half-bridges, the S1A module monitors LVDT operation and indicates most common failures. The S1A offers a choice of four excitation frequencies and eight analog DC outputs, as well as an RS-485 digital communications port. These features make the Everight S1A the world leader in AC- LVDT signal conditioning…

• Smart setup with 2 front panel push buttons --- NO POTS

• Built-in null indicator: LEDs and separate DC null voltage output

• Choice of 1, 3, 5, or 10 kHz nominal excitation frequencies

• Use with 3-, 4-, 5-, or 6-wire LVDTs and inductive half-bridges including 3-wire GE LVRTs

• Choice of 6 DC voltage outputs and 2 current loop outputs

• 40 dB range of FS outputs from LVDT: 50 mV rms to 5 Volts rms

• Fail-safe master /slave syncing eliminates beat frequencies

• 15 - 32 Volts DC operation, 80 mA maximum operating current.

• Self-diagnostic for LVDT winding failures or cable disconnection

• Independent failure warning flag via open collector output

• Digital communications link via

RS-485 multi-drop bus with up to 16 individual module addresses

• Hot swappable: set-up can be saved /reloaded via RS-485 port

• Color coded plug-in connections to 22.5 mm wide DIN-rail module

• TWO (2) YEAR warranty instead of industry standard (1) year

Everight Sensors Corporation

102 Commerce Drive, Unit 8 Moorestown, New Jersey 08057 USA www.everightsensors.com info@everightsensors.com 856-727-9500 http://www.everightsensors.com/ mailto:info@everightsensors.com

Everight Sensors S1A LVDT Signal Conditioner Specifications Operating power: +15 to +32 V DC (+24 V DC nominal), 60 mA max. at 24 V DC;

+15 V DC and -15 V DC for -10 V to +10 V DC bipolar output

Excitation voltage: 3.0 Vrms sine wave push-pull drive nominal (factory default)

4.5 Vrms sine wave push-pull drive via on-board jumper shift

1.5 Vrms single ended drive for low impedance (100 -150 Ω) primary

Excitation frequencies: 1 kHz, 3 kHz, 5 kHz, 10 kHz (nominal)

Master/slave syncing: Master output couples up to fifteen slave inputs; if original master fails, new master is automatically generated for fail-safe excitation control.

LVDT AC Output Signal: 50 mVrms to 5000 mVrms at LVDT's full scale position

Analog DC Outputs: 0 - 5 V, 1 - 5 V, 0.5 - 4.5 V, 0 -10 V, -10 to +10 V, 0.5 - 9.5 V, 0 -20 mA sourcing, 4 -20 mA sourcing

Loop resistance: 850 Ω max (current loop output mode, 24 V DC supply)

Output non-linearity: ≤0.025% of Full Span Output (FSO)

Frequency response: -3 dB at 10% of excitation frequency (nominal) (standard: DS2-4 off) -3 dB at 10 Hz (nominal) (low noise setting: DS2-4 on)

Noise and ripple: ≤2 mVrms (voltage output), or ≤4 µArms (current loop output.)

Fault indication: Loss of excitation, open primary or secondary, LVDT disconnected

Fault output: LED indicators, open collector output, 50 mA, 26.5 V DC max.

Null detection: Front panel LEDs, ± 30 mV threshold out of ≈ ±1.6V signal level

Null output: LEDs, DC null voltage signal (≈ ±3 V DC = ±FS)

Operating Temperature: -20 ºC to +75 ºC

Zero set: Front panel push button or RS-485 command

Full Scale set: Front panel push button or RS-485 command

Digital interface: RS-485 2-wire multi-drop network, 16 addresses

S1A Module Outline Dimensions