26-65-1089 SAM PD.pdf

26-65-1089 October 27, 2025

Statement of Work (SOW) for a CNC Controller & Components for a CNC Motch Grinder Rebuild

1.0 SCOPE.

1.1 Scope. The following SOW describes the minimum requirements for the purchase of a FANUC 0i-TF Plus Controller, Analog Servo Controls, Servo Motors, Spindle System, Operator Pendant, and new Electrical Enclosure for the rebuild of a CNC Grinder (Mfg. Motch Model:48CNC). The controller shall be designed to support all features of the existing Grinder. The vendor shall be responsible for sending all new equipment to a Government rebuild facility where the machine is currently being rebuilt to OEM standards. Once the machine has been rebuilt, including the CNC upgrade and tested for quality assurance, it will be disassembled and shipped to the end user’s facility. The machine will then be re-assembled by the Government and have a final inspection and acceptance test to ensure all new components of the upgrade perform as required.

The vendor shall be required to verify at the Government rebuild facility and the customers facility that all upgraded components supplied in this specification for the upgraded CNC control are in good working order.

2.0 APPLICABLE DOCUMENTS.

2.1 General. The documents listed in this section are cited in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3 and 4 of this specification, whether or not they are listed.

2.2 Government Documents.

2.2.1 Specifications, Standards, and Handbooks. The following specifications, standards and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the solicitation or contract.

STANDARDS – FEDERAL

U.S Department of Labor, Occupational Safety and Health Administration (OSHA)

29 CFR 1910: General Industry, OSHA Safety and Health Standards (2024 Ed.)

(Application for copies should be addressed to the OSHA Publications Superintendent of Documents P.O. Box 37535 Washington, D.C. 20013-7535)

2.2.2 Other Government Documents, Drawings, and Publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the solicitation or contract.

2.3 Non-Government Publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the solicitation or contract.

2.3.1 Specifications, Standards, and Handbooks.

National Electrical Manufacturers Association (NEMA)

NEMA 250-2020: Enclosures for Electrical Equipment (1000 Volts Maximum) (2021 Ed.)

NEMA ICS 1-2022: Industrial Control and Systems General Requirements (2022 Rev.)

NEMA ICS 6-1993: Industrial Control and Systems: Enclosures (2016 Rev.)

NEMA MG 1-2021: Motors and Generators (2022 Ed.)

ANSI Z535.4-2023: Product Safety Signs and Labels (2023 Rev.)

(Application for copies should be addressed to the National Electrical Manufacturers Association, 1300 17th Street N #900, Arlington, VA 22209)

National Fire Protection Association (NFPA)

NFPA 70: National Electrical Code (2023 Ed.)

NFPA 79: Electrical Standard for Industrial Machinery (2024 Ed.)

(Applications for copies should be addressed to the National Fire Protection Association, ATTN: Support Services, 11 Tracy Drive, Avon, MA 02322)

Society of Automotive Engineers (SAE)

SAE EIA-267-C: Axis and Motion Nomenclature for Numerically Controlled Machines (2015 Ed.)

SAE EIA-RS274D: Interchangeable variable block data contouring, format for positioning and contouring/positioning numerically controlled machines (2015 Ed.)

(Application for copies should be addressed to: Society of Automotive Engineers 400 Commonwealth Drive, Warrendale PA 15096)

TECHAMERICA

TIA-232-F: Interface between Data Terminal Equipment and Data Circuit-Terminating Equipment Employing Serial Binary Data Interchange (2012 Rev.)

(Application for copies should be addressed to: TECHAMERICA, 601 Pennsylvania Ave., NW, North Building Suite 600 Washington D.C. 20004-2650)

2.4 Order of Precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulation unless a specific exemption has been obtained.

3.0 REQUIREMENTS.

3.1 Design. The item offered shall be new, and a current commercially available model and shall conform to the Specifications, Standards and Handbooks listed in section 2.0 Applicable Documents. A current model is defined as the manufacturer’s currently produced model which on the date this solicitation is issued, has been designed, engineered, sold or is being offered for sale through advertisements or manufacturer’s published catalogue or brochures. Products such as a prototype unit, pre-production model, or experimental unit do not qualify as meeting the requirements specified herein. The CNC Controller shall include all components, parts, and features necessary to meet the performance requirements specified herein. All parts subject to wear, breakage or distortion shall be accessible for adjustment, replacement, and repair.

3.1.1 Measuring and Indicating Device Graduations. All measuring and indicating devices on the machine shall be graduated in the inch/pound and Metric.

3.1.2 Controls. All electrical operating controls shall be located convenient to the operator's workstation(s).

3.1.3 Safety and Health Requirements. All machine parts, components, mechanisms, and assemblies furnished on the machine, whether or not specifically required herein, shall comply with all of the requirements of OSHA 29 CFR 1910.

3.1.4 Mercury Restriction. The retrofit package shall not contain mercury or mercury compounds nor be exposed to free mercury during manufacture with the exception of fluorescent lighting where required.

3.1.5 Asbestos Restriction. Asbestos and materials containing asbestos shall not be used on or in the retrofit package.

3.1.6 Lead. Lead and materials containing lead shall not be used on or in the retrofit package with the exception to radiation cladding and lead solder in circuits.

3.1.7 Use of Polychlorinated Biphenyl (PCB). The use of polychlorinated biphenyl (PCB) on or in the equipment is prohibited.

3.1.8 Environmental Protection. Under the operating, service, transportation, and storage conditions described herein, the retrofit package shall not emit materials hazardous to the ecological system as prohibited by Federal, state, or local statutes in effect at the point of installation.

3.1.9 Replacement Parts. All parts subject to replacement shall be manufactured to definite dimensions and tolerances. Replacement parts shall be interchangeable without requiring modification. Electrical replacement parts shall include but not be limited to, motors, relays, fuses, switches, magnetics, pushbuttons, light bulbs, braking mechanisms, and solid-state devices.

3.2 Construction. The items required for the upgrade shall be constructed of parts that are new, without defects, and free of repairs.

3.2.1 Fastening Devices. All screws, pins, bolts, and other fasteners shall be installed to prevent unintentional loosening. Fastening devices subject to removal or adjustment shall not be permanently installed.

3.2.2 Painting. The electrical enclosure will be painted by DLA Mechanicsburg.

3.2.3 Workmanship. Workmanship of the machine shall meet all requirements specified herein and shall be of a quality equal to that prevailing among manufacturers producing equipment of the type covered by this purchase description.

3.3 Components. The retrofit package shall consist of not less than the following components:

3.3.1 Electrical System. The retrofit package shall conform to the NFPA 70 and NFPA 79. The existing source power available at the facility is 460 volt, 3-phase, 60 Hertz (Hz). The electrical system shall be tolerant of fluctuation of ± 10 percent. The electrical system shall be complete, including any electrical transformer(s) that may be required to modify the existing source voltage to the proper operating voltage of the equipment. A properly rated, and fused, single disconnect device shall be utilized on the machine with means of lockout in the off position only.

3.3.2 Electrical Enclosure. Construction of the new electrical enclosure shall conform to NEMA ICS 6 and NEMA 250-2020 standards. The enclosure shall be a NEMA type 12 and shall provide for ventilation of components and shall be designed for an indoor non-hazardous location. All electrical components shall conform to applicable NEMA ICS 1 standards. The back panels shall house the main breaker, CNC control, servo drives, new spindle drive, model A I/O, all magnetics, and all new electrical/electronic components, etc. needed to complete the upgrade. The machine shall be provided with interlocks on its electronic cabinet that shall instantly remove power from the equipment when the door is opened in accordance with NFPA 79.

3.3.3 Arc Flash Protection. Electrical enclosures shall be marked for arc flash in accordance with NFPA 79 Paragraph 16.2.3 “Safety Signs for Electrical Enclosures” for arc flash safety.

3.3.4 Solid-State Components. Electrical devices used to power electrical servo and spindle motors of control voltage delivered to solid-state electrical components shall be solid-state devices.

Such devices shall handle the electrical load imposed by operation of the machine to its maximum capability. The use of selenium in solid-state components shall be restricted to those devices that protect other solid-state components from voltage surge.

3.3.5 Controller Features. The machine controller shall consist of a Fanuc 0i-TF Control, incorporating all standard features. The CNC unit shall provide programmable automatic control of machine functions, operating modes, axis movement and other part program directed functions for the machine. Movement in all axes shall be both synchronous and independent positioning and shall conform to SAE EIA-267-C and SAE EIA-RS274D. Control features shall include Manual Data

Input (MDI), simultaneous control of X and Z axes, control of 2 rail-axes, linear interpolation, circular interpolation, helical interpolation, programmable interface, part program edit, buffer edit capability, part program storage, fixed cycles, and control diagnostics. The CNC shall direct machine functions from command data stored in memory. The data stored in memory shall be input by the media specified herein. The control shall initiate a halt and error signal should a fault condition occur in the control. The control shall automatically shut down when internal operating temperatures exceed safe operating limits.

3.3.6 CNC Software. The new CNC Open Vision Grind software shall be fully documented. The PMC ladder logic shall support lubrication cycles, faults and alarms, and display pages. All Fanuc 0i- TF standard options and Bi-directional Pitch Error Compensation shall be enabled on the CNC controller. The following Open Vision grind options shall be enabled on the CNC control:

a. Creep Feed style grinds

b. Gap elimination using the spindle drives load command.

c. Multiple axis configurations with as many as 12 axes per path.

d. Dual path grinding

e. Unlimited wheel heads can be programmed, with as many as 4 being used at a time.

f. Wheel changes and turrets

g. Both AE and load based crash detection and gap elimination

h. Multiple dressing configurations and tools

i. Serial, Digital, and Analog gaging systems can be configured

j. Preprocess, in-process, and post process gaging are all supported

k. Configurable devices such as loaders, dropdowns and probes

l. On board tools for complex contouring

m. CBN Adaptive cycle tools

n. Customizable excel interface

o. Inter diameter style grinds

p. Outer diameter style grinds

q. Step style grinds

r. Thread style grinds

s. Basic option 2 (R703)

t. Simultaneously controlled axes expansion (Maximum 4 axes per path) (J803)

u. Dual position feedback (J704)

v. Linear Scale I/F with absolute address reference mark (J670). Requires separate detector I/F

Workpiece coordinate system (G52-G59) (J894)

w. CNC screen display functions

3.3.7 Program Input.

a. Least input increment of 0.001 mm/0.0001inch for X and Z-Axes.

b. Interpolation increment of 0.0005 mm/0.0000 inch for X and Z-Axes.

c. Maximum programmable dimension of ± 9999.9999

d. Decimal point programming

e. Inch and metric codes

f. Interpolation functions shall include rapid traverse positioning, linear interpolation, multi-quadrant circular interpolation, helical interpolation, and cylindrical interpolation

g. Feed modes shall include feed per minute, feed per revolution, surface feed per minute, inverse time, and rapid traverse

h. Program input shall be feasible via keyboard input from the operator panel, USB port, PCMCIA port and the RS-232 C Interface should be located on electrical cabinet and conform to TIA-232-F.

3.3.8 Maintenance Diagnostic System. Maintenance diagnostics software shall be furnished either in the control as nonvolatile memory or as a separate program that is compatible with the input media specified herein. The diagnostic software shall test and display failures. The system shall monitor operating conditions and have automatic means of rapidly stopping operations to prevent damage when potentially harmful malfunctions are detected.

3.3.9 Other Functionality. The following functionality shall be provided by the new CNC software and PMC ladder logic:

a. Allow bi-directional jog while in “HOME” mode

b. Axis selection buttons shall illuminate when respective axis is at home position while in

“HOME” mode.

c. Allow feed hold while in “HOME” mode

d. Rapid override selector, versus the federate override, shall control axis velocity while referencing the axis in the “HOME” mode.

e. Allow feed hold during M06 tool changes

3.3.10 Operator Console. A new operator's console that shall consist of a display, discrete key operator's panel and miscellaneous control devices that are needed to meet or exceed the existing pendant station. The new console shall be mounted to the floor and house the Fanuc control, display, operator’s panel, servo & spindle drives, and miscellaneous components needed for the rebuild.

3.3.11 Console. A new console shall be provided to house the new industrial PC with an industrial 15 inch LCD color display and Fanuc MDI style (not QWERTY) keyboard. The new console shall have a means to prevent damage to the wiring from door swing when the cabinet is open.

3.3.11.1 Advanced FANUC Manual Pulse Generator (MPG). A FANUC MPG shall be provided with 20 feet of cabling to allow the operator full operation anywhere in the machining envelope. The remote pendant shall have axis jog controls for each axis in both incremental and hold to jog, similar to joystick functionality and a manual pulse generator (MPG) for moving in 0.01 inch, 0.001 inch, and 0.0001 inch increments. The remote pendant shall have an emergency stop button.

3.3.11.2 Emergency Stop Devices. The equipment specified herein shall be provided with emergency stop buttons at the equipment control panel, and on the remote pendant.

These stop buttons shall be the mushroom type, be colored red, and be labeled as such.

When activated, the emergency stop devices shall cause all operations or functions to cease immediately.

3.3.11.3 Motors. Alternating current (AC) motors shall be supplied by DLA Mechanicsburg.

3.3.11.4 Analog Servo Control System. The new X and Z axes analog servo system consisting of Fanuc AC digital velocity units and Fanuc high-resolution absolute remote encoders shall be provided. All analog servo controls shall be sized with torque, inertia, and speed characteristics required to meet or exceed the existing system on the machine. All vertical axis shall have a holding brake. The vendor shall provide all new power and feedback cables. The drive systems shall interface to the machine tool as required.

3.3.11.5 Spindle Motor System. A new spindle motor, gearbox and spindle drive shall be provided. The spindle motor, gearbox and drive shall be sized with torque, inertia, and speed characteristics required to meet or exceed the existing system on the machine.

The vendor shall provide all new power and feedback cables. The drive system shall interface to the machine tool as required.

3.3.12 Hour Meter. The machine shall be equipped with a non-resetting type, analog hour meter to display accumulated operating time of the drive motor(s), mounted on the main electrical panel visible from the outside, sealed to prevent the entrance of dust and moisture, and shall be mounted to withstand shock and vibration generated by the machine. A CNC control that tracks and displays total machine on time (a non-resetting type), controller on, program runtime, and run time of the servo motor(s) run time shall be considered to meet this requirement. The meter shall be sealed to prevent the entrance of dust and moisture and shall be mounted to withstand shock and vibration generated by the machine.

3.3.13 Linear Scales. Linear scales and hardware shall be provided to replace X, Z, and (2) Rail axes consisting of:

a. Fagor scales and mounting hardware required to adapt new scales to the machine tool.

b. Absolute interface eliminating the need for zero return after power shut-off

c. Remote feedback capability that will allow interface to the existing remote feedback systems currently on the machine (as required).

d. New feedback cables and interface electronics to the Fanuc controls.

e. Air purge system to provide positive pressure assuring no contamination

3.3.8 Additional Miscellaneous Equipment. The vendor shall supply all pre-made cables, cables, wiring, and sealtight needed for these interconnections. The vendor shall also supply all fully assembled control enclosures, pendant stations, operator stations, pushbutton stations, motors, and feedback devices needed to complete the upgrade.

3.4 Size and Capacity. The size and capacity of the machine that the retrofit package will be installed on are listed in Table I.

SIZE AND CAPACITY TABLE I

Characteristic Capacity/Range

Physical Size Length 10 Feet Width 12 Feet Height 17 Feet

C Axis (Rotary Table & Drive) Diameter of table 48 Inch Diameter Table Drive 7.5kW/11kW Variable Speed Table speeds infinitely (Programmable) 2-100 RPM Rotation / Travel Continuous Rotation (Programmable) CW & CCW Hold Downs 8 Radial Tee Slots

X Axis (horizontal slide) Horizontal “X” Axis Stroke Inch Axis Feed Rates (Programmable) .0002 Inch to .004 Inch/impulse Axis Rapid Traverse Rate Inch/min

Z Axis (vertical slide grinding wheel) Vertical “Z” Axis Stroke 0 – 27 Inch Axis Feed Rates (Programmable) 0 – 80 Inch/min

Grinding Wheel Spindle Grinding Wheel Motor 20 HP 1800 RPM Grinding Spindle Speed (Speed changes thru pulley ratio change)

3600 rpm Max

3.5 Alignment and Accuracy Tolerances. The alignment and accuracy tolerances of the rebuilt machine shall be as specified in Table II.

ALIGNMENT AND ACCURACY TABLE II

Characteristic Accuracy Tolerance

Accuracy Linear (X and Z Axis) ± 0.0002 Inch

Repeatability Linear Axis Repeatability (X and Z Axis) ± 0.0002 Inch

3.5.1 Pitch Error Compensation. The vendor will be responsible for populating the pitch error compensation tables on all axes values to achieve the accuracy and precision requirements listed in

3.5 Table II. DLA Mechanicsburg will be responsible for supplying and operating the laser. If achievement of accuracy and precision is not obtainable because existing components are worn, defective, or inoperative, then those components shall be reported to the Contracting Officer for determination of corrective action, and this requirement will be waived in way of those components.

Existing components are defined as those not included in section 3.3 herein.

3.6 Marking on instruments, Control Panels, and Plates. All words on plates shall be in the English language. Characters shall be engraved, etched, embossed, or stamped in boldface on a contrasting background. All plates shall be corrosion resistant.

3.7 Nameplate. A nameplate shall be permanently and securely attached to the electrical enclosure. The nameplate shall contain the information listed below. If the machine is a special model, the model designation shall include the model number of the basic standard machine and a suffix identified in the manufacturer's permanent records.

Nomenclature Manufacturer's Name Manufacturer's Model Designation Manufacturer's Serial Number Power Input (Volts, Total Amps, SCCR, Phase, Frequency) Contract Number Date of Manufacture

3.8 Technical Data. The vendor shall supply Two (2) hard copies and one (1) electronic copy(s) of technical data with the electrical package. Technical data manual shall contain table of contents, technical information, specifications, instructions for the operation, FANUC Operator manuals, FANUC Maintenance manuals, electrical schematics, PLC schematics, mechanical assembly drawings, parameter list and recommended spare parts list. All copies of technical data shall be legible and written in the English language.

3.9 Installation. The new retrofit package will be shipped to DLA Aviation, Industrial Plant Equipment Services Div. 5450 Carlisle Pike Mechanicsburg, Pa. 17050-2411 for the initial integration and start-up of the CNC machine. Once retrofitted and tested the CNC machine will be disassembled and shipped to Fleet Readiness Center Southeast (FRCSE) 110 Yorktown Ave.

Jacksonville Florida 32244 for final installation.

3.9.1 Vendor Installation Responsibilities. Ship the new retrofit package to DLA Aviation, Industrial Plant Equipment Services Div. 5450 Carlisle Pike Mechanicsburg, Pa. 17050-2411 for initial integration and start-up. The vendor shall be responsible for start-up, programing and troubleshooting the CNC controller and conform to the OSHA 29 CFR 1910. The vendor shall put the machine through functional testing, operational testing and the vendor shall be present for the forming performance tests at DLA Aviation (IPE MECH). The vendor will input any linear compensation of the system needed to meet ball bar and laser tests. Once DLA Aviation (IPE Mech) has installed the machine at the final destination, the vendor shall be required to perform final start-up of the machine consisting of all operational functions, feeds, speeds, and shall be present for the forming performance tests at Fleet Readiness Center Southeast (FRCSE) 110 Yorktown Ave. Jacksonville Florida 32244. See section 4 for testing requirements at final destination.

3.9.2 DLA Aviation (IPE Mech) Installation Responsibilities. DLA Aviation (IPE Mech) will assign one mechanic (mechanical/hydraulic) and one maintenance mechanic (electrical/electronic) to provide information and any additional materials for the vendor’s representative during installation, verification, and initial/final start-up of the machine. DLA Aviation (IPE Mech) shall be responsible for installing the retrofit package supplied by the vendor, which includes the CNC controller, servomotors, spindle drive system, operator pendant, remote pendant and the electrical enclosure for the initial start-up of the machine. DLA Aviation (IPE Mech) will manufacture and install the new motor and encoder mountings, purchase and install all field devices (limit switches, pressure switches, solenoids, cable and hose carriers), and run all the interconnections between the devices. DLA Aviation (IPE Mech) will disassemble and ship the CNC machine to Eglin Air Force Base, Florida, 32542 for final installation. At the final destination DLA Aviation (IPE Mech) personnel will reassemble the CNC machine and assist the vendor with the final start-up. DLA Aviation (IPE MECH) will be responsible for the forming performance tests at DLA Aviation (IPE MECH) and at the final destination.

3.9.3 Training. After satisfactory completion of acceptance testing of the system, the services of a qualified vendor representative(s), who is an American citizen of good standing and repute and proficient in the English language, shall be provided for specialized training to familiarize Government personnel with the equipment. The training will familiarize receiving activity personnel with the new FANUC controls, downloading and uploading part programs, functions of the control operation, and all functions of the machine control system. Training shall be performed at the Government facility and shall not be less than five (5) consecutive eight (8) hour workdays, between 7:30 am and 4:00 pm excluding weekends and federal holidays. The course shall utilize as-built drawings and manuals provided under this contract, and shall include both classroom and hands-on portions. All printed training aids shall be supplied for the course, be in the English language, and become the property of the Government.

3.9.4 Operational/Programming Training. Operational/Programming training shall be performed at final installation location for no less than five (5) operator/programmer personnel for a minimum of three (2) consecutive, eight (8) hour workdays.

3.9.5 Maintenance Training. Maintenance training shall be performed at final installation location for no less than five (5) maintenance personnel for a minimum of two (2) consecutive, eight

(8) hour workdays.

4.0 QUALITY ASSURANCE.

4.1 Responsibility for Inspection. The vendor shall be responsible for the performance of all inspection requirements specified herein and in accordance with the attached Quality Assurance Provision (QAP). The Government reserves the right to witness any inspections set forth in the purchase description where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements.

4.2 Responsibility for Compliance. All items must meet all requirements of section 3 and 4.

4.3 Classification of inspections. The inspection requirements specified herein are classified as follows:

a. Contract quality assurance inspection (IPE Mechanicsburg) (see 4.5).

b. Final Inspection/Acceptance test (Destination) (see 4.6).

4.4 Inspection Conditions. All inspections, tests, and examinations shall be performed in an indoor facility with ambient temperature conditions in the range of 55° F to 100° F and 10% to 95% relative humidity.

4.5 Contract Quality Assurance Inspection (Origin). Contract quality assurance inspection shall be applied at the Mechanicsburg’s facility prior to being offered for acceptance under the contract. The machine and all peripheral equipment added to the machine shall be fully assembled and perform all functions in accordance with this specification. Quality conformance inspection shall consist of the examination in 4.7 and the tests in 4.8 through 4.8.2. The machine shall pass the examination, all tests, and contract quality assurance inspection to be acceptable for shipment to the final destination.

4.6 Final inspection / Acceptance Test (Destination). Final Inspection and acceptance test shall be performed on the machine to ensure conformance with this purchase description. The acceptance test shall be performed only after the machine is installed at its final location. The acceptance test shall consist of the examination in 4.7 and all tests in 4.8 through 4.8.2. The machine shall pass the examination and all tests to be accepted.

4.7 Examination. The rebuild package equipment shall be examined for design, dimensions, construction, materials, components, electrical equipment and workmanship to determine compliance with the requirements of this specification.

4.8 Tests. The vender shall be present for all the below tests at Mechanicsburg and at the final destination for final inspection and acceptance. The vender is responsible for the control and all ancillary equipment that is listed in this SOW. Any failure of the controller or ancillary equipment to perform as specified herein shall be cause for rejection.

4.8.1 Axis Accuracy and Repeatability Test. Tests shall be conducted to ensure the machine meets the accuracy and repeatability tolerances specified in paragraph 3.5, Table II. The machine repeatability and accuracy for slide motions, spindle speed changes, feed rate changes and auxiliary functions shall be checked.

4.8.2 Operational Test. The machine shall be operated at no-load for not less than four (4) hours for an initial warm-up period. Proper operation of all controls, motors, adjusting mechanisms and accessories shall be verified during the warm-up period. Upon completion of the initial check procedure, the system shall be cycled continually for three (3) hours under computer numerical control to demonstrate operability of the equipment and permit the machine to reach a steady operating temperature. The vendor-supplied program shall include rapid travel of the slides and rams, independently and simultaneously, spindle work of varying speeds. If a malfunction occurs during the cycling period, the program shall be restarted each time until a full three (3) hour programmed cycle is completed without a malfunction. After successful completion of the operational test, over-travel limits (programmed stops and hard stops), emergency stop devices, and accessories shall be verified during the trial period. The safety limit stops shall be checked by attempting to exceed the limits of travel of each moving axis.