Basic Information
1. Manufacturer: Rockwell Automation (Allen-Bradley)
2. Product Positioning: ControlLogix rack-redundant AC power supply, external mounting, paired redundant operation, automatic load sharing
3. Connection Requirements: Requires 1756-CPR2 cable to connect to the chassis adapter
4. Dimensions: 175.0 × 145.0 × 137.0 mm (6.9 × 5.7 × 5.4 in)
5. Weight: Approx. 1.45 kg (3.2 lb)
Electrical Specifications
1. Input: 85–265 V AC (nominal 120/240 V AC), 47–63 Hz; Input power 120 VA / 115 W; Maximum inrush current 20 A; Hold-up time 2 cycles at 60 Hz, 2 cycles at 50 Hz
2. Output: Total power 75 W (0~60°C); Output levels: 1.2 V DC / 1.5 A, 3.3 V DC / 4 A, 5.1 V DC / 13 A, 24 V DC / 2.8 A
3. Isolation: Power input – back panel, power input – alarm, alarm – back panel are reinforced insulation; 3250 V DC withstand voltage 60 s
Environment and Certifications
1. Operating temperature: 0~60°C; Storage temperature: −40~+85°C; Relative humidity 5%–95% non-condensing
2. Immunity/Mechanical: 2 g vibration (10–500 Hz); Operating shock 30 g; Compliant with IEC 61000 series immunity standards
3. Certifications: c-UL-us, CSA; Class I, Division 2 hazardous location certification
Core Functions and Applications
1. Dual-module redundant configuration, seamless switching in case of failure, ensuring uninterrupted power supply to critical systems
2. Equipped with LED Status indicators and solid-state relay alarm outputs facilitate monitoring and fault diagnosis.
3. Suitable for redundant power supply solutions for ControlLogix racks in process control, factory automation, and high-availability systems.
Additional Notes:
• Must be used in pairs (same model 1756-PA75R), with a dedicated chassis adapter and 1756-CPR2 cable.
• Supports hot-swappable (RIUP), maintenance without downtime.
• Compatible with B and C series standard racks and 1756 XT racks.
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