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U41169-J-Z156-4-74
ON/OFF Switch
Operating and Indicator Elements
3.3.1
Power Supply Unit LEDs
Depending on the delivery version there are two or three LEDs on the
connecting side of the power supply units that indicate the status of the power
supply units.
Power Supply Unit with two LEDs:
Figure 6: The Power Supply Unit with two LEDs
(1)
Fault indication (amber LED)
(2)
Operating indication (green LED)
Fault indication
(amber LED)
Operating indication
(green LED)
Status of the power supply unit
OFF
OFF
No AC voltage present.
OFF
flashing
AC voltage present; standby
outputs ready.
OFF
ON
DC outputs ready. Power supply
unit operational.
ON
OFF
No AC voltage present for this
power supply unit or power supply
unit has failed.
flashing
ON
Current limiting.
Table 6: Meaning of the Power Supply Unit LEDs