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Feedback / option module evidence record

Unidrive Feedback and Option Module Evidence Record

Captures encoder, feedback option, shield/ground, external 24 V load and control-supply evidence for unstable closed-loop or PS.24V cases.

Board and evidence record8 min read

Scope of this technical record

Defines the Unidrive evidence package for feedback, encoder, option-module and external 24 V load cases.

Safety boundary

Feedback and option-module work can alter motion behaviour. Secure the machine and preserve parameter evidence before removal.

Unidrive feedback/option evidence route

1Option label
→
2Encoder
→
3Cable shield
→
424V loads
→
5Fault-following result

The evidence record captures the facts needed before option-module or control-board repair.

Unidrive feedback option evidence image

Unidrive feedback option evidence route option label encoder cable shield 24V loads and fault following result
The image defines the evidence package for feedback and option-module repair requests.

Evidence package

The request should capture option-module labels, encoder type, feedback cable route, shield/ground termination, external 24 V load branches, trip timing and whether the fault follows the feedback device or module.

  • Option-module label and slot
  • Encoder/feedback device type
  • Cable and shield photos
  • External 24 V branch list
  • Fault-follows-module evidence

Repair boundary

If the fault follows field wiring or feedback device, internal board work should stop. If it remains after branch proof, the option-module or control-board route becomes credible.

Field record checklist

  • Option identity
  • Feedback device
  • Cable/shield evidence
  • 24V branches
  • Fault-following result

Technical basis and reference documents

This is an independent editorial technical reference. Original manufacturer documentation remains controlling for installation, repair and commissioning decisions.

Control Techniques Unidrive manual mirrorVFDS.com

User-guide reference for option and trip-log context.

Linked circuit records

Circuit
Unidrive Output Current, Vector Control and Feedback Path

Routes OI.AC and unstable closed-loop behaviour through motor cable, output bridge, current feedback, brake release, encoder feedback, shielding and tuning context.

Open →Circuit
Unidrive Control Supply, Option Module and Feedback Path

Routes PS.24V, thermal feedback and encoder instability through external 24 V loads, option modules, feedback wiring, sensor supply, heatsink feedback and control-board evidence.

Open →
Evidence intake

Turn this record into a qualified service request

A repair decision is much more reliable when the request includes the exact identity of the drive, the first fault evidence and the machine condition when the symptom appeared.

  • Complete drive type code / MLFB or nameplate model
  • Fault code, fault value and first event before reset
  • When the event appears: power-up, enable, ramp, run, decel or stop
  • Motor/cable connected or isolated during the symptom
  • Visible board, option-card, module and connector identifiers
  • Previous repair history, replacement parts and repeat-failure pattern
Prepare request →