Catalogs > Automation Systems Catalog > Programmable Controllers > ControlLogix System > Power Supplies
Power Supplies
| Introduction |  |
Environmentals and Certifications | |
ControlLogix Standard Power Supplies | |
ControlLogix-XT Power Supplies | |
ControlLogix Redundant Power Supplies | |
To build a redundant power supply system, you need:
- two redundant power supplies (both 1756-PA75R or 1756-PB75R)
- one 1756-PSCA2 chassis adapter module, which funnels power from the redundant power supplies to the single power connector on the ControlLogix series B chassis backplane
- two 1756-CPR2 cables to connect the power supplies to the 1756-PSCA2 chassis adapter module
- user-supplied annuniciator wiring to connect the power supplies to the input modules, as needed
The 1756-PSCA2 chassis adapter module is a passive device that funnels power from the redundant power supplies to the single power connector on the ControlLogix series B chassis backplane.
ControlLogix Redundant Power Supplies
Specifications [PDF]
| Cat. No. | Description | Voltage Category | Operating Voltage Range | Chassis |
| 1756-PA75R | ControlLogix redundant power supply | 120V/220V AC | 85…265V AC | Standard series B |
| 1756-PB75R | 24V DC | 19.2…32V DC | Standard series B |
Accessories—Redundant Power Supplies
| Cat. No. | Description | Specifications |
| 1756-PSCA2 | Chassis adapter module. Funnels power from the redundant power supplies to the single power connector on the ControlLogix series B chassis backplane. | Mounts directly to left side of 1756 chassis |
| 1756-CPR2 | Chassis adapter cable. Connects redundant power supply to 1756-PCSA2 chassis adapter. | Length: 0.91 m (3 ft) |