Alarm and Power LEDs
The CLLIONLC01 is equipped with an alarm LED and a
Alarm LED (1) and power LED (2)
Alarm LED (1, red)
Watchdog alarm output is powered
• The controller has encountered a
• The application has a fault
• The controller has been powered up
without an application or the operator has
manually stopped the application,
e.g., using XL-Online.
In this case, the LED will light up
13 minutes after power-up without
The watchdog alarm output has not yet been
powered, although the controller has
encountered a problem.
The controller performs a warm start.
If the problem persists, the LED will become
lit constantly, see above.
See section "Troubleshooting" on page 74.
Table 33 Controller alarm LED
Power LED (2, green)
Table 34 Controller power LED
Failure (= alarm)
Table 35 Watchdog status 4
Permissible Load of Normally Closed Contact
Table 36 Permissible load of terminal 4
Description of the CLLIONLC01
One or more of the internal voltage
supplies are outside of the permissible
The controller stops operation.
Check wiring or see section "Trouble-
shooting" on page 74.
• The operator has activated the reset
• The controller is performing a warm
Signal on terminal 4
current at cos φ ≥ 0.95: 0.5 A,
current at cos φ ≥ 0.6: 0.5 A
0.5 A resistive or inductive