Allen-Bradley 1756-PB75RK ControlLogix Conformal-Coated Redundant DC Power Supply
- Brand
- Allen-Bradley
- Model
- 1756PB75RK
- GEARWELL SKU
- GWP-000001838
- Category
- PLCs & I/O
Key specifications
- Depth (approx.)
- 137 mm
- Width (approx.)
- 145 mm
- Height (approx.)
- 175 mm
- Weight (approx.)
- 1.45 kg
- Current capacity at 3.3 V DC
- 4 A; subject to the combined output-power limit
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The Allen-Bradley 1756-PB75RK is a redundant DC power supply from Rockwell's ControlLogix 1756 range. It is the K (harsh-environment) version of the 1756-PB75R with the same ratings. It is a redundant power supply that takes 18…32 V DC (24 V DC nominal) and delivers up to 75 W: 13 A at 5.1 V DC, 4 A at 3.3 V DC, 1.5 A at 1.2 V DC and 2.8 A at 24 V DC. It measures 17.5 x 14.5 x 13.7 cm (H x W x D) and weighs about 1.45 kg. A redundant system uses two redundant supplies, two 1756-CPR2 power cables (0.91 m) and one 1756-PSCA2 chassis adapter; the pair shares the chassis load automatically, shows the pair status on indicators and has a solid-state relay that can report supply status to an input module.
Technical reference
| Product name | Allen-Bradley 1756-PB75RK ControlLogix Conformal-Coated Redundant DC Power Supply |
|---|---|
| Brand | Allen-Bradley |
| Model | 1756PB75RK |
| Category | PLCs & I/O |
| Depth (approx.) | 137 mm |
| Width (approx.) | 145 mm |
| Height (approx.) | 175 mm |
| Weight (approx.) | 1.45 kg |
| Current capacity at 3.3 V DC | 4 A; subject to the combined output-power limit |
| Annunciator contact rating for ATEX/IECEx | 90 V DC, 50 mA; resistive load only |
| Current capacity at 5.1 V DC | 13 A; subject to the 75 W combined output-power limit |
| Maximum combined backplane output | 75 W at 0-60 deg C; sum of all output rails must not exceed 75 W |
| Input voltage range | 18-32 V DC; 24 V DC nominal |
| Enclosure type | Open-style (no enclosure rating) |
| Conductor screw torque | 0.565 N m (5 lb-in) |
| Redundant system components required | 2 compatible power supplies, 2 1756-CPR2-family cables and 1 compatible chassis adapter; a single supply is not the complete system |
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