2.3 Power Supply Unit
2.3 Power Supply Unit
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Names and functions of parts
(1) POWER LED (blue)
Turns on when power supply is turned on.
(2) Power supply terminals
Terminal block for power supply wiring. A solderless terminal for M3 can be used.
(3) Earth terminals
The unit should be grounded at a grounding resistance of 100 Ω or less to prevent noise and
electric shock.
(4) Alarm contact output terminal
Closed when power supply is ON. If the watchdog timer is operated due to a hardware error or
a program error, turning the relay contact into an open status.
(5) DIN rail attachment lever
Used for fixing the unit on the DIN rail.
WUME-FP7CPUH-09
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