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Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Emerson Control Techniques |
| Model | FX-316 |
| Manufacturer Part Number | 960132-01 |
| Product Type | Positioning servo drive |
| Series | Emerson FX Drive |
| Nominal Supply Class | 230 V AC |
| Continuous Current Rating | 4 A |
| Setup Software | PCX software |
| Compatible Actuator Family | Exlar GS-series actuators |
| Feedback Interface | Verify connector and feedback type against the drive label |
| Motor Cable | Model-dependent; Exlar ECM, ECL, or PC4-AC cable may apply |
| Control Interface | Verify I/O and command-interface configuration before installation |
| Protection / Environment | Confirm from the exact Emerson FX-316 manual or nameplate |
| Safety Status | Dangerous voltage and stored energy remain after power removal |
The 4 A continuous-current rating and Exlar actuator application are documented in the available FX Drive/Exlar manual. A secondary listing identifies 960132-01 as the FX-316 230 V positioning-drive part number, but its additional “56 kHz” specification is not sufficiently corroborated for use as a verified product rating.
Product Introduction
Emerson FX-316, part number 960132-01, is a positioning servo drive for Emerson FX motion-control systems and Exlar GS-series actuators. The drive controls actuator speed, torque, and positioning through configured motor, feedback, thermal-switch, and command connections.
This legacy drive is selected when maintaining an existing FX-series installation rather than redesigning the motion system. Its documented continuous-current rating is 4 A, and setup uses Emerson Motion Control PCX software. Confirm the complete part number, voltage class, feedback connector, actuator model, and revision before purchase.
FX-316
FX-316
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to This Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No display or status indication | Missing AC input, blown fuse, or internal power-supply fault | ✅ High | Isolate the equipment, then verify the specified AC voltage at the drive input and inspect upstream protection | Check input power and fuses before replacing the drive |
| Drive powers up but will not enable | Enable circuit open, interlock active, or configuration inhibit | ✅ High | Verify the enable input, safety/interlock chain, and controller command using the wiring diagram | Correct the enable circuit before condemning the drive |
| Motor does not move | Missing command, incorrect limits, disabled drive, or motor-cable fault | ✅ High | Check PCX status, command source, enable state, and motor-cable continuity with power isolated | Confirm command and enable signals before replacing hardware |
| Overcurrent fault during acceleration | Excessive load, incorrect current limit, actuator jam, or motor mismatch | ✅ High | Compare PCX current-limit settings with the actuator and measure mechanical load conditions | Reduce limits during commissioning and verify actuator compatibility |
| Position error or following error | Incorrect feedback wiring, wrong encoder configuration, mechanical binding, or tuning issue | ✅ High | Inspect feedback connector and cable, then monitor feedback position in PCX | Do not replace the drive until feedback polarity and scaling are verified |
| Drive trips on thermal fault | Overload, insufficient cooling, blocked ventilation, or disconnected thermal switch | ✅ High | Check enclosure temperature, fan/airflow, duty cycle, and the actuator thermal-switch circuit | Correct cooling or thermal wiring; test the actuator before replacing the drive |
| Motor oscillates or hunts | Incorrect tuning, feedback noise, loose coupling, or wrong motor data | ✅ Medium | Review tuning parameters in PCX and inspect shield termination, grounding, and mechanical coupling | Restore known-good parameters and tune with the load secured |
| Motor runs in the wrong direction | Reversed command polarity, motor-phase wiring, or parameter error | ✅ Medium | Compare motor and feedback wiring with the original installation records | Do not swap conductors from memory; follow the FX wiring documentation |
| Feedback fault appears immediately | Open feedback cable, wrong connector, incompatible motor, or encoder failure | ✅ High | Inspect connector pinout and test cable continuity with the drive de-energized | Use the correct feedback cable and actuator combination |
| Actuator overheats | Excessive torque limit, high duty cycle, mechanical overload, or thermal-switch failure | ✅ High | Check PCX maximum-torque setting and verify the thermistor/thermal-switch circuit | Reduce torque limits and resolve the mechanical cause |
| Communication with PCX fails | Incorrect serial connection, port settings, cable, or software compatibility | ⚠️ Medium | Verify the PC COM port, cable, communication settings, and PCX installation | Confirm the correct service cable and software version before replacing the drive |
| Drive fault remains after reset | Persistent hardware, feedback, power-stage, or safety-chain fault | ✅ High | Record the exact fault code and capture PCX diagnostic data before cycling power repeatedly | Provide the fault log and nameplate photos for technical evaluation |
The FX-316 can retain dangerous voltage and stored energy after input power is removed, and the connected actuator can move unexpectedly. Apply the manufacturer’s lockout, discharge, and mechanical-restraint procedures before testing. The available manual also recommends reducing current limits during initial setup until motor and control wiring are verified. cite
If the fault remains, contact technical support with photos of the nameplate and connectors, the exact 960132-01 revision, PCX fault history, measured input voltage, motor/actuator model, and feedback-cable part number.
Frequently Asked Questions (FAQ)
Is Emerson FX-316 the same as part number 960132-01?
Available industrial listings identify FX-316 as Emerson part number 960132-01. Still, verify the complete label, revision, connector arrangement, and voltage marking because FX-series drives can appear under abbreviated model descriptions.
What motor or actuator works with the FX-316?
The available FX Drive documentation describes FX-316 application with Exlar GS-series actuators, including GS20, GS30, and GS45 combinations in its torque-setting table. The required motor-power cable changes with the actuator; examples include ECM, ECL, and PC4-AC cable families. Verify the exact actuator, feedback option, connector type, and cable length before installation.
Is the FX-316 a standard VFD?
No. It is a positioning servo drive intended for motion control and actuator positioning. A standard induction-motor VFD is not a direct substitute because the FX-316 installation depends on feedback, enable/interlock circuits, actuator data, current limits, and positioning parameters.
Can I replace the FX-316 with another FX-series drive?
Not automatically. The FX-208, FX-340, and other FX models have different continuous-current ratings and application limits. A replacement must match the motor or actuator, supply voltage, feedback system, command interface, current requirement, mounting, and configuration. The 4 A rating documented for FX-316 is not interchangeable with a higher- or lower-rated model without an engineering review.
Can I hot-swap this servo drive?
No. Remove and isolate incoming power, wait for the DC bus to discharge, verify the absence of hazardous voltage, and mechanically secure the actuator before disconnecting the drive. The available manual warns that dangerous voltage remains and that stored energy can cause motion even after power is removed.
What condition should I expect when buying a replacement?
Because the FX-316 is a legacy Emerson Motion Control product, listings may include New Surplus, Used, or Refurbished units. A credible listing should state the exact condition, show the nameplate and connectors, identify the 960132-01 part number, and explain whether testing included power-up, PCX communication, enable operation, feedback simulation or actuator testing, and thermal inspection.
Why is this drive cheaper than a current factory replacement?
Legacy-stock pricing may be lower than a current motion-system redesign, but availability and support are limited. The lower price does not remove the need to verify voltage, current rating, actuator compatibility, feedback wiring, configuration backup, and warranty terms. For a used or refurbished unit, request the test report and fault-history details before purchase.
