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7
Wiring
• To avoid an electric shock, check that the PS-A unit's power supply is com-
pletely turned OFF, via a breaker or similar unit before connecting the PS-A
power cord terminals to the PS-A unit's power terminal block.
• The PS3701A-T41-DU-E66 unit can accept only DC24V input. If you use
power other than DC24V, you can damage both the power supply and the
PS-A unit.
• Since the PS-A unit has no power ON/OFF switch, be sure to attach a
breaker-type switch to its power cord.
When the FG terminal is connected, be sure the wire is grounded.
Not grounding the PS-A unit will result in excess noise and vibration.
Wherever possible, use thick wires (max. 2 mm
•
to reduce noise be sure to twist the wire ends.
Recommended power plug is Phoenix Contact Co.'s GMVSTB2.5-3-STF-
•
7.62.
Terminal
Screw
Wire
Opening
+
-
Power Cord *1
Connecting the PS-A unit's Power Cord Terminals
When connecting the power cord, be sure to follow the procedures given below.
1. Confirm that the PS-A unit's power cord is unplugged from the power supply.
2. Loosen the three (3) screws from the power plug.
3. Remove the insulation of the power cord's 3 internal wires and insert each wire
into the Power Plug's wire opening.
4. Re-attach the screws.
• The torque required to tighten these screws is 0.5 to 0.6N•m.
• Do not solder the wire itself.
• If the wire's strands are not twisted carefully, the end strands may either
short against each other, or against an electrode.
E-18
WARNINGS
Rear of PS-A Unit
Bottom of
Power Plug
FG
*1
2
) for PS-A power Plug. Also,
+ : Positive electrode
- : Negative electrode
FG : Ground Terminal connected to the PS-A chassis
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