Safety Node A Internal Fault

What does LED_STAS1_FLASH mean?

The STAS1 (Safety node A) LED on the KUKA KRC4 Sunrise Cabinet Med Controller is flashing, indicating an internal fault code within Safety node A. This critical fault affects the safety chain and requires immediate attention to restore safe operation.

• Internal malfunction of Safety node A.
• Issues with the cabling connected to X309, X310, or X312.
• Insufficient or unstable power supply (e.g., related to fuse F17.3 or PWR/3.3V LED status).
• Faulty CCU_SR module.

Click steps to track your progress.

1. 1

   Check fuse F17.3 on the Cabinet Control Unit, Small Robot (CCU_SR) and replace if defective.

2. 2

   Observe the PWR/3.3V LED; if it lights up, but STAS1 is flashing, the issue may be internal to the safety node.

3. 3

   Inspect the cabling at connectors X309, X310, and X312 for damage or loose connections.

4. 4

   For test purposes, disconnect the cables at X309, X310, and X312, then switch the controller off and back on again.

5. 5

   If the error recurs after these steps, prepare to exchange the CCU_SR module.