Overview
1.2 Design of the device
SIMATIC IPC1047
18
Operating Instructions, 09/2018, A5E45118479-AA
1.2.4
Power indicators, redundant power supply
Rear
The power supply unit of the redundant power supply can be run with only one power supply
module
①
. If a power supply module, e.g.
②
, is out of service, a visual and audible warning
signal sounds.
Operating
display
Meaning
LED
Description
LED
acknowledgment
key 1
Operating status of
power supply
module 1
OFF
Device disconnected from power supply
Flashes
GREEN
•
Power supply module 1 ready for
operation
•
PC switched off
GREEN
•
Power supply module 1 in operation
•
PC switched on
Flashes RED Power supply 1 interrupted
RED
Power supply module 1 defective
Flashes slowly
RED/GREEN
Warning at power supply module 1, e.g.
overload
LED
acknowledgment
key 2
Operating status of
power supply
module 2
OFF
Device disconnected from power supply
Flashes
GREEN
•
Power supply module 2 ready for
operation
•
PC switched off
GREEN
•
Power supply module 2 in operation
•
PC switched on
Flashes RED Power supply 2 interrupted
RED
Power supply module 2 defective
Flashes slowly
RED/GREEN
Warning at power supply module 2, e.g.
overload