- Home
- Allen-Bradley 1756-PH75 ControlLogix Power Supply Module
Sale
Allen-Bradley 1756-PH75 ControlLogix Power Supply Module
No reviews
In stock!
- Part Number: 1756-PH75
- Brand: Allen-Bradley
- Type: Power Supplies
- Barcode: USA
Share
Product Description
The Allen-Bradley 1756-PH75, also cataloged as the 1756-PH75 Power Supply Module, operates as a dedicated hardware component for direct physical input voltage conversion and backplane power distribution within ControlLogix platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1756-PH75 |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 2.75 lbs (1.25 kg) |
| Dimensions | 5.51 in x 4.41 in x 5.71 in |
| Operating Temp | 0 to 60 deg C (32 to 140 deg F) |
| Power Consumption | Input Power: 95 W, Output Power: 75 W at 60 deg C |
| Product Line | ControlLogix |
| Product Type | Power Supplies |
| Nominal Input Voltage | 125 VDC |
| Input Voltage Range | 90-143 VDC |
| Inrush Current | 30 A max |
| Current Capacity | 1.5 A at 1.2 VDC, 4 A at 3.3 VDC, 13 A at 5.1 VDC, 2.8 A at 24 VDC |
| Isolation Voltage | 250 V continuous (input-to-backplane), tested at 3500 VDC for 60 s |
| Chassis Compatibility | Series B Chassis (1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17) |
| Chassis Location | Leftmost slot of chassis |
| Relative Humidity | 5-95% non-condensing |
EtherNet/IP & Deterministic Backplane Power Distribution
The module regulates power delivery to ensure backplane bus communication velocity and logic execution across installed cards. Providing channel-to-backplane isolation rated at 250 V continuous with reinforced insulation, the power supply isolates incoming 125 VDC field supply transients from sensitive backplane logic circuitry. Firmware flash compatibility across ControlLogix racks is supported while delivering multi-rail power outputs (1.2 VDC, 3.3 VDC, 5.1 VDC, and 24 VDC) necessary for high-density I/O density scaling.
Frequently Asked Questions
Q: Where must the 1756-PH75 power supply be installed within a ControlLogix chassis?
A: The 1756-PH75 must be installed exclusively in the dedicated power supply slot located on the far left side of compatible Series B ControlLogix chassis (such as 1756-A4, 1756-A7, 1756-A10, 1756-A13, or 1756-A17).
Q: What are the backplane current output capabilities for each voltage rail of the 1756-PH75?
A: The module supplies maximum load-dependent currents of 1.5 A at 1.2 VDC, 4.0 A at 3.3 VDC, 13.0 A at 5.1 VDC, and 2.8 A at 24 VDC, up to a total combined maximum output power of 75 W at 60 deg C.
Field Installation Guidelines
- De-energize the main 125 VDC supply line before mounting or wiring the power supply module.
- Mount the 1756-PH75 directly into the leftmost position of the target ControlLogix chassis, ensuring top and bottom chassis latches engage fully.
- Strip 2.5 mm squared (14 AWG) stranded or solid copper wire with 90 deg C rated insulation for incoming DC power connections.
- Tighten the power input screw terminals to a torque specification of 0.8 N m (7 lb in).
- Verify chassis grounding by connecting a dedicated low-impedance copper ground conductor from the enclosure earth point to the chassis grounding stud.
Have a Question?
