Rockwell Automation 1756-L7x GuardLogix 5570 Controllers - Manual (Page 23)

Rockwell Automation Publication 1756-UM022A-EN-P - November 2012 23
Install the Controller Chapter 2
2. Install a ControlLogix power supply according to the corresponding
installation instructions.
Extreme environment (XT) controllers require an XT power supply.
Install the Controller into the
Chassis You can install or remove a controller while chassis power is on and the system is
operating.
1. Insert the key into the primary controller.
2. Turn the key to the PROG position.
The safety partner does not have a keyswitch.
Cat. No. Description Series Refer to These Installation
Instructions
1756-PA72 Power supply, AC
C
1756-IN005
1756-PB72 Power supply, DC
1756-PA75 Power supply, AC
B
1756-PB75 Power supply, DC
1756-PAXT XT power supply, AC
B
1756-PBXT XT power supply, DC
WARNING: When you insert or remove the module while backplane
power is on, an electrical arc can occur. This could cause an explosion in
hazardous location installations.
Be sure that power is removed or the area is nonhazardous before
proceeding. Repeated electrical arcing causes excessive wear to contacts on
both the module and its mating connector. Worn contact may create
electrical resistance that can affect module operation.
IMPORTANT The ESM begins charging when one of these actions occurs:
• The controller and ESM are installed into a powered chassis.
• Power is applied to the chassis that contains a controller with the ESM
installed.
• An ESM is installed into a powered controller.
After power is applied, the ESM charges for up to two minutes as indicated by
CHRG or ESM Charging on the status display.
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