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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

PS2 Off

Power Supply 2 (Medium Battery Backup) Not Present / Controller Sleep State

Kuka · Sunrise Cabinet Med Controller

What does PS2 Off mean?

The PS2 Voltage Green LED is OFF, indicating either that Power Supply 2 (with medium battery backup) is not present or that the controller is in a Sleep state. This could mean the controller is not fully operational or is in a low-power mode, potentially affecting overall system responsiveness.

Common Causes

  • Power Supply 2 (PS2), potentially for medium battery backup, is offline.
  • Failure or disconnection of the PS2 unit.
  • The controller has entered a sleep state, deactivating PS2.
  • Battery backup for PS2 has failed or is disconnected.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the infeed at connector X1 for proper power supply.

Browse all codes in this manual (21)
Verified technical data. Last updated: April 2026

Related Faults

27V PS OffMain Power Supply Unit 27V Not PresentFuse DefectiveCabinet Control Unit Fuse DefectivePHY4 OffEthernet Physical Layer Fault
Source: Kuka Sunrise Cabinet Med Controller
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