Allen-Bradley 1756-PA75R Installation Instructions Manual

Installation Instructions

Original Instructions

ControlLogix Redundant Power Supply

Catalog Numbers 1756-PA75R, 1756-PB75R, 1756-PSCA2, 1756-PBXTR, 1756-PSCA2XT, 1756-PAXTR, 1756-PA75RK, 1756-PB75RK, 1756-PSCA2K

Topic

The redundant power supply system provides additional uptime protection for chassis that are used in critical applications. The two remotely

mounted supplies are designed to share the current required by the chassis. Two supplies are available in AC (catalog number 1756-PA75R/A or

1756-PAXTR) and DC (catalog number 1756-PB75R/A or 1756-PBXTR) versions that can be mixed or matched when used in tandem.

If one power supply fails, the remaining supply accommodates the entire load of the chassis without disruption to chassis activity.

The ControlLogix® redundant power supply system is designed to account for operational anomalies in only the power supply

(the chassis adapter and power supply cables are excluded).

The 1756-PSCA2 chassis adapter is a passive device. The chassis adapter funnels power from one or two ControlLogix redundant power supplies to

the single power connector on the ControlLogix chassis backplane.

Redundant Power Supply and Chassis Compatibility

Your chassis series determines the redundant power supply that you can use. This table lists the chassis that can be installed with each redundant

power supply.

Power Supply Cat. No.

Chassis Cat. No.

1756-A4/B, 1756-A7/B, 1756-A10/B, 1756-A13/B, 1756-A17/B

1756-A4/C, 1756-A7/C, 1756-A10/C, 1756-A13/C, 1756-A17/C

(1)

1756-A4/B, 1756-A7/B, 1756-A10/B, 1756-A13/B, 1756-A17/B, 1756-A4LXT/B, 1756-A5XT/B, 1756-A7LXT/B, 1756-A7XT/B

1756-A4/C, 1756-A7/C, 1756-A10/C, 1756-A13/C, 1756-A17/C, 1756-A7XT/C

(1)

(1) The 1756-PAXTR and 1756-PBXTR redundant power supplies are only rated from 0...60 °C (32...140 °F) when used in non-XT chassis.

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