8 Rockwell Automation Publication 1756-IN619A-EN-P - April 2016
ControlLogix Power Supply
Connect the power as shown in the figure.
Optional Power Cable Connection
The 1756-PA50, 1756-PB50, 1756-PA30XT, and 1756-PB30XT power supplies offer an optional cable retention mechanism.
Install the optional cable retention mechanism per the following procedure.
1. Align the power cable in the v-groove at the front of the power supply.
2. Feed a cable tie through the retainer on the v-groove.
3. To secure the power cable, tighten the cable tie.
4. Trim any excess cable tie length as appropriate.
IMPORTANT The voltage input connections of the power supplies are auto-sensing.
You do not use a jumper, for example, a 120/240V AC jumper, when connecting external power to the power supply, as shown in the following figure.
Item Description, AC Power Supplies Description, DC Power Supplies
1 L1 (high side of line power) DC+ (positive supply)
2 L2 (low side of line power) DC- (negative supply return)
3 This terminal is not used and is capped to prevent use
4 2.5 mm² (14 AWG) 75 °C (167 °F) copper wire with 1.2 mm (3/64-in.) insulation
AC Power Supplies DC Power Supplies
1
2
3
1
3
2
4
4
Power Cable
V-groove
Cable Tie
Cable Tie
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