- Provides the chassis-side connection for a pair of supported ControlLogix redundant power supplies
- Passively combines the two supply paths into the single power connector on a compatible chassis backplane
- Carries the documented backplane current capacities at 1.2, 3.3, 5.1, and 24 volts DC
1756-PSCA2 is the ControlLogix chassis adapter used in standard redundant-power configurations.
A complete arrangement uses two compatible redundant power supplies, two appropriate 1756-CPR2-family cables, and one chassis adapter connected to a documented Series B chassis.
The adapter is passive and is not itself a power supply; system redundancy depends on correct supply sizing, cabling, chassis compatibility, annunciation, and maintenance practice.
Availability, condition, price, and shipping time for 1756-PSCA2 are confirmed during quotation.
Allen-Bradley 1756-PSCA2 Redundant Power Supply Chassis Adapter Module Manuals, Datasheets, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- A complete redundant-power system requires two compatible power supplies, two redundant-power cables, and one chassis adapter
- The adapter connects to the single power connector on the ControlLogix chassis backplane
- Select cable style and routing for the actual enclosure layout and documented installation clearances
- Redundant supplies can share the chassis load and allow one supply to carry the load after the other path fails
- The chassis adapter and its connection to the backplane are common elements and are not duplicated
- Power redundancy does not replace controller, communication, I/O, or process redundancy where those are required
- Verify the total chassis load against the supported supply and adapter current capacities before energization
- Test each supply path and annunciator circuit separately under an approved commissioning procedure
- Inspect cable seating, strain relief, grounding, ventilation, and enclosure clearance before returning the system to service
- Single-chassis ControlLogix systems requiring redundant AC or DC power-supply paths
- Two-chassis ControlLogix redundant-power layouts using one adapter and two cables for each chassis
- High-availability ControlLogix installations where power-supply failure must not interrupt chassis activity