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3. Controller checks
3.1 BEFORE connecting the controller power supply
3.1.1 Disable the breaker
Disconnect or disable the breaker BEFORE connecting the controller power supply.
Do not enable the breaker until AFTER the wiring and controller operation are thoroughly tested.
DANGER!
Unintended breaker closing can cause deadly and/or dangerous situations.
3.2 Checking the controller
3.2.1 Connecting the controller power supply
If the breaker is disabled, then you can connect the controller power supply.
3.2.2 Checking the controller LEDs
When the controller is powered on, check that the controller the LEDs are as expected:
LED Location
Expected
state
Unexpected state and action
PSM3.1
Power
On the front plate of PSM3.1
Green
Red
Wait for the self-check and/or software update to
complete.
If necessary, use the hardware module self-check
LEDs to find and replace the defective hardware
module(s).
Off
Check the controller power supply.
If necessary, replace the power supply module.
PCM3.1 Self-
check OK
On the front plate of PCM3.1
Green
Red (flashing slowly)
One or more hardware module self-check is not OK.
Wait for the self-check and/or software update to
complete.
If necessary, use the hardware module self-check
LEDs to find and replace the defective hardware
module(s).
GPU 300 Commissioning guidelines 4189341033 UK
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