Which installed system position is intended for 1756-PSCA2?

Install 1756-PSCA2 only in the documented Allen-Bradley ControlLogix redundant power position and compare the complete catalog marking with the approved hardware list.

What field signals or controlled function does 1756-PSCA2 handle?

Its documented role is redundant controllogix chassis power transfer; preserve the assigned channel, network or controller function during service.

Which companion hardware must be matched to 1756-PSCA2?

Match 1756-PSCA2 with two ControlLogix redundant power supplies and two 1756-CPR2 cables, including the documented rack, cable and project identity.

Which electrical rating must be checked before wiring 1756-PSCA2?

Verify power-supply inputs: 2 redundant supply cables. Do not transfer limits from another catalog number.

What configuration should be recorded before replacing 1756-PSCA2?

Record the as-found position, conductors, addressing, firmware and software revision, then restore only the approved Allen-Bradley ControlLogix redundant power configuration.

Which isolation and handling controls apply to 1756-PSCA2?

Isolate all documented supply and field energy, use ESD controls and protect keyed connectors before handling 1756-PSCA2.

How should an engineer commission 1756-PSCA2?

Power up in a controlled sequence, review device and host diagnostics, then prove the intended redundant controller chassis supply function.

Can 1756-PSCA2 replace a visually similar module without an engineering review?

No automatic substitution is assumed; compare the complete catalog number, interfaces, ratings and approved system revision.

Allen-Bradley 1756-PSCA2 ControlLogix redundant power supply chassis adapter

Name: 1756-PSCA2
Brand: Allen-Bradley
SKU: 1756-PSCA2

1756-PSCA2

ControlLogix redundant power supply chassis adapter

In Stock

Ships by Tuesday, September 22

Fast Shipping Available

Technical specifications for 1756-PSCA2

Manufacturer:

Allen-Bradley

Product Category:

PLC Systems

Spare Part Number:

1756-PSCA2

Estimated shipping dimensions:

14.3x15x3.5cm

Weight:

0.25 kg

Tariff Code:

8537101190

Counliy of origin:

USA

Function:

Redundant power supply chassis adapter

Power-supply inputs:

2 redundant supply cables

Backplane current capacity:

4 A at 3.3 V DC

Operating temperature:

0 to 60 degC

Relative humidity:

5 to 95% noncondensing

Operating shock:

30 g

Vibration:

2 g at 10 to 500 Hz

Enclosure:

Open style

Information

Overview Manuals Common Applications Product Precautions

Allen-Bradley 1756-PSCA2 is controllogix redundant power supply chassis adapter. It combines power from two ControlLogix redundant supplies and feeds a compatible Series B chassis backplane.

Accepts two redundant power-supply cables
Feeds one ControlLogix chassis backplane
Supports power-supply redundancy diagnostics
Mounts in the chassis power-adapter position

1756-PSCA2 operates with two ControlLogix redundant power supplies, two 1756-CPR2 cables, compatible Series B ControlLogix chassis, annunciator wiring where used.

Engineered applications include Redundant controller chassis supply, High-availability process rack, Controlled supply switchover, Chassis-adapter replacement.

Important Notice: De-energize both redundant supplies, identify both cable paths and annunciator conductors, and verify chassis Series compatibility before installation.

Apter Power Allen-Bradley 1756-PSCA2 Manuals and Guides

Apter Power Allen-Bradley 1756-PSCA2 Product and System Technical Reference PDF Apter Power Allen-Bradley 1756-PSCA2 Installation and Commissioning Workbook PDF

The first document presents model-specific engineering data. The second provides a separate installation, connection, commissioning and acceptance workflow.

Redundant controller chassis supply

Maintains chassis power when one supply is unavailable.

High-availability process rack

Supports redundant power in critical process racks.

Controlled supply switchover

Provides controlled supply status and annunciation.

Chassis-adapter replacement

Restores the adapter while retaining both supply paths.

Read the applicable Allen-Bradley instructions before work. Verify 1756-PSCA2 and the installed Allen-Bradley ControlLogix redundant power configuration.

Verify the complete 1756-PSCA2 marking and its assigned Allen-Bradley ControlLogix redundant power position before work.

Place the connected redundant controller chassis supply process in the approved maintenance state.

Isolate applicable power and redundant controllogix chassis power transfer field energy before disconnecting conductors.

Record connector, conductor, address, firmware and software identities before removal.

Use ESD controls and protect keyed interfaces, exposed contacts and electronic assemblies.

Confirm the installed two ControlLogix redundant power supplies and two 1756-CPR2 cables against the approved project.

Restore power in a controlled sequence and review device, network and host diagnostics.

Prove the intended high-availability process rack function and retain the final test result.

FAQS

Which installed system position is intended for 1756-PSCA2?

Install 1756-PSCA2 only in the documented Allen-Bradley ControlLogix redundant power position and compare the complete catalog marking with the approved hardware list.
What field signals or controlled function does 1756-PSCA2 handle?

Its documented role is redundant controllogix chassis power transfer; preserve the assigned channel, network or controller function during service.
Which companion hardware must be matched to 1756-PSCA2?

Match 1756-PSCA2 with two ControlLogix redundant power supplies and two 1756-CPR2 cables, including the documented rack, cable and project identity.
Which electrical rating must be checked before wiring 1756-PSCA2?

Verify power-supply inputs: 2 redundant supply cables. Do not transfer limits from another catalog number.
What configuration should be recorded before replacing 1756-PSCA2?

Record the as-found position, conductors, addressing, firmware and software revision, then restore only the approved Allen-Bradley ControlLogix redundant power configuration.
Which isolation and handling controls apply to 1756-PSCA2?

Isolate all documented supply and field energy, use ESD controls and protect keyed connectors before handling 1756-PSCA2.
How should an engineer commission 1756-PSCA2?

Power up in a controlled sequence, review device and host diagnostics, then prove the intended redundant controller chassis supply function.
Can 1756-PSCA2 replace a visually similar module without an engineering review?

No automatic substitution is assumed; compare the complete catalog number, interfaces, ratings and approved system revision.

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1756-PSCA2

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Technical specifications for 1756-PSCA2

Technical specifications for 1756-PSCA2

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