PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1756-PAR2 is a ControlLogix redundant power supply kit. This complete assembly includes two 1756-PA75R power supplies. The bundle also contains two 1756-CPR2 cables and one 1756-PSCA2 chassis adapter module. The system provides redundant power protection for industrial control hardware. Using dual supplies reduces downtime risks in critical manufacturing applications.
Each 1756-PA75R power unit operates on an input range from 85 to 264 VAC. The system delivers up to 75 Watts of maximum output power. Current capacities include 1.5 A at 1.2 VDC and 4 A at 3.3 VDC. It also provides 13 A at 5.1 VDC and 2.8 A at 24 VDC. The passive 1756-PSCA2 adapter consolidates power onto the ControlLogix chassis backplane connector. Two 1756-CPR2 cables synchronize both power units across 0.91-meter lengths.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
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| Category | PLCs |
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| UPC | 612598313716 |
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| Weight | 13.81 lbs (6.27 kg) |
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| Module Type | Redundant Power Supply bundle |
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| Assembly components | Two (2) 1756-PA75R power supplies,; Two (2) 1756-CPR2 cables; One (1) 1756-PSCA2 Chassis adapter module |
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| 1756-PA75R Nom Input Voltage | 120/240VAC |
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| 1756-PA75R Input Voltage Range | 85-264VAC |
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| Isolation Voltage | 250V (continuous), Reinforced Insulation Type, Power Input to Backplane, Power Input to Annunciator, Annunciator to Backplane Type tested at 3250V DC for 60 s |
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| Max Inrush Current | 20 Amperes |
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| Current Capacity | 1.5 A at 1.2VDC; 4A at 3.3VDC; 13 A at 5.1VDC and 2.8 A at 24VDC |
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| Output Power | 75 W @ 0…60 °C (32…140 °F) |
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| Annunciator Power | 240V AC 50/60 Hz, 240V DC, 50 mA, resistive only |
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| Hold Up time | 2 cycles @ 60 Hz; 2 cycles @ 50 Hz |
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| Chassis Compatibility | 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17 |
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| Input Voltage | 85-265 VAC |
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TECHNICAL INFORMATION
Features
- Provides two 1756-PA75R redundant power supplies, two 1756-CPR2 cables, and one 1756-PSCA2 adapter.
- Accepts an input range of 85 to 264 VAC at 47 to 63 Hz.
- Delivers 75 Watts maximum output power from 0 to 60 degrees Celsius.
- Supplies current capacities of 1.5 A, 4 A, 13 A, and 2.8 A.
- Offers reinforced insulation tested at 250 Volts continuous.
- Includes interconnect cables measuring 0.91 meters with a 12.7-centimeter minimum bend radius.
TECHNICAL INFORMATION
Applications
- ControlLogix chassis installations requiring redundant power supplies.
- Continuous process automation setups needing protection against single power unit failure.
TECHNICAL INFORMATION
Connections / Interfaces
- Two 1756-CPR2 cables connect the dual power supplies for synchronization and communication.
- The 1756-PSCA2 chassis adapter connects directly to the chassis backplane power connector.
- Annunciator wiring supports a maximum run length of 10 meters.
TECHNICAL INFORMATION
Installation Guidelines
- Attach the 1756-PSCA2 adapter to the left end of the ControlLogix framework.
- Fasten the adapter directly to the chassis backplane.
- Connect the dual 1756-PA75R power units using the 1756-CPR2 cables.
- Maintain at least a 12.7-centimeter bend radius on all 1756-CPR2 cables.
TECHNICAL INFORMATION
Compatibility
- Compatible with ControlLogix chassis models 1756-A4, 1756-A7, 1756-A10, 1756-A13, and 1756-A17.
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with ControlLogix chassis models 1756-A4, 1756-A7, 1756-A10, 1756-A13, and 1756-A17.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What parts are included in the Allen-Bradley 1756-PAR2 bundle?
The bundle contains two 1756-PA75R supplies, two 1756-CPR2 cables, and one 1756-PSCA2 adapter module.
Which ControlLogix chassis models are compatible with the 1756-PAR2?
It supports ControlLogix chassis models 1756-A4, 1756-A7, 1756-A10, 1756-A13, and 1756-A17.
What is the function of the 1756-PSCA2 adapter module?
The 1756-PSCA2 is a passive device. It consolidates power from both supplies onto the backplane connector.
What is the input voltage rating for the 1756-PA75R power supplies?
The input range is 85 to 264 VAC with nominal ratings of 120 or 240 VAC.
