Fault Led - Siemens SIMATIC S5 Manual

Technical Description of the IP 266
2.6

Fault LED

The module is equipped with a red fault LED which is located at the right of the
analog output.
This LED flags faults of special IP 266 functions.
LED shows steady light in the event of the
following hardware faults (automatic operation)
• Wirebreak or short-circuit on (5 V) incremental
position encoder
• No 24 V voltage supply
• Polarity reversal of 24 V voltage supply
• Power section off
• Error in IP 266 restart routine
• Open circuit between IP 266 and power section
• Blocked drive
• Incorrect position control (track A/A\ and B/B\
reversed)
2-22
LED flashes
• In the IP 266 restart routine
EWA 4NEB 812 6057-02
IP 266