Rockwell Automation 1771-P4R_P6R Allen-Bradley Redundent Power Installation Instructions - Manual (Page 14)

Allen-Bradley Redundant Power Supplies 14
Publication 1771-IN030B-EN-P - July 2002
Removing the Power Supply
!
WARNING
When you insert or remove the module while
backplane power is on, or you connect or
disconnect the alarm relay, ac power, or
redundancy cable with field power applied, an
electrical arc can occur. This could cause an
explosion in hazardous location installations. Be
sure power is removed or the area is nonhazardous
before proceeding.
1. Flip the POWER switch on the front panel to the Off position,
only on the unit to be removed.
2. Remove the ac input terminal block, the alarm relay terminal
block, and the redundant cables only from the unit to be
removed.
3. Slide the unit out of the chassis and note the following settings:
•
I.D selection switch setting (1 through 4)
•
configuration switch setting (5 and 6)
•
jumper setting (local or remote sensing)
•
input voltage rating on the front panel near the ac input
connector
You will set the replacement unit to the same settings.
Inserting the Power Supply
1. Configure the supply to the same settings as the unit removed.
2. Flip the POWER switch on the front panel to the Off position.
3. Insert the module completely into the slot in the chassis.
4. Connect redundant cables, alarm relay terminal block, and ac
input terminal block.
5. Flip the POWER switch to the On position.