Operation
User manual 55530_hdb_en_16 134 / 156
The power LEDs indicate the state of the supply voltages
UA actuator voltage
US operating voltage
LED indication
POWER US
Tab. 9-8: LED Indication POWER US
NOTE
At US <18 V, an error-free operation is no longer guaranteed.
LED indication
POWER UA
Tab. 9-9: LED indication POWER UA
Indica-
tion
State Description
Green
Lit continuously 17.5 V ≤ US ≤30 V
Error-free operation
Red
Lit continuously 12.5 V ≤ US ≤17 V
Undervoltage
Red
Flashing 1 Hz 7.5 V ≤ US ≤12 V
No voltage
Red
Flashing 5 Hz US ≥30.5
Overvoltage
Off
US ≤7.5 V
No voltage
Indica-
tion
State Description
Green
Continuously lit 17.5 V ≤ UA ≤30 V
Error-free operation
Red
Continuously lit 12.5 V ≤ UA ≤17 V
Undervoltage
Red
Flashing 1 Hz UA ≤12 V
No voltage
Red
Flashing 5 Hz UA ≥30.5 V
Overvoltage
Off
UA ≤7.5 V
No LED indication
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