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Grounding the Switch
There is an earth ground screw on the bottom
side of the switch. Connect the earth ground
screw of the switch to a grounding surface to
ensure safety and prevent noise.
It is not necessary to attach a ground wire if
the DIN rail is grounded and the switch is
mounted on the DIN rail.
Wiring the Power
Use the following procedure to wire the power. The switches allow redundant DC power input.
Note: The recommended working voltage is 24VDC (12-48VDC).
1. Disconnect the terminal block from the switch.
2. Insert the positive and negative wires into the + and - contact
either under the PW1 and/or PW2 on the terminal block
connector.
PWR1
Bottom Side
Note: Power should be disconnected from the power supply before connecting it to the switch.
Otherwise, your screwdriver blade can inadvertently short your terminal connections to the
grounded enclosure.
3. Tighten the wire-clamp screws to prevent the wires from being loosened.
4. Plug the terminal block into the switch.
Alarm
DC Power Output
PWR2
V+ V-
V+ V-
12-24AWG Wire
DC Power Output
12-48VDC
12-24AWG Wire
Earth Ground
Screw
Earth Ground
Warning: Do not connect to AC line - Neutral
Power Supply
12-40VDC/1A
V-
AC Power Input
12-48VDC
V+
Power Supply
12-48VDC/1A
V-
AC Power Input
V+
2
PW1
Alarm
+
Line
Neutral
Earth Ground
Line
Neutral
Earth Ground
PW2
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