Allen-Bradley 1756-PB72K ControlLogix DC Power Supply Module
$123.00
$320.00
Description
Allen-Bradley 1756-PB72K ControlLogix DC Power Supply Module
Configured for regulated chassis power distribution in ControlLogix systems, the Allen-Bradley 1756-PB72K (1756-PB72 DC Power Supply Module) provides direct DC power conversion and backplane voltage delivery for installed controller and I/O modules. The unit accepts 24 VDC input and generates regulated 1.2 V, 3.3 V, 5.1 V, and 24 VDC backplane outputs.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1756-PB72K |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 1.1 kg |
| Dimensions | 140 x 112 x 145 mm |
| Operating Temp | 0 deg C to 60 deg C |
| Power Consumption | 95 W maximum input power |
| Module Type | ControlLogix DC Power Supply Module |
| Input Voltage | 24 VDC nominal, 18 to 32 VDC range |
| Output Power | 75 W at 60 deg C |
| Backplane Voltages | 1.2 VDC, 3.3 VDC, 5.1 VDC, 24 VDC |
| Current Capacity | 1.5 A at 1.2 VDC, 4 A at 3.3 VDC, 10 A at 5.1 VDC, 2.8 A at 24 VDC |
| Hold-up Time | 35 ms at 18 VDC, 40 ms at 24 VDC and 32 VDC |
| Inrush Current | 30 A peak |
| Chassis Compatibility | 1756-A4, A7, A10, A13, A17 Series A/B/C |
| Installation Position | Left side of ControlLogix chassis |
| Wiring Requirement | 2.5 mm2 copper wire, insulation thickness <= 1.2 mm, terminal torque 0.565 N.m |
| Insulation Test | Reinforced insulation tested at 3500 VDC for 60 seconds |
| Enclosure Type | Open-style design |
Backplane Bus Power Distribution Characteristics
The 1756-PB72K operates as a ControlLogix chassis power source, converting external 24 VDC supply input into multiple regulated backplane voltage rails. The module supports I/O density scaling through chassis-level power allocation, maintaining current delivery for installed ControlLogix processors, communication modules, and I/O modules.
The power supply module interfaces with the ControlLogix backplane bus and provides distributed DC power without direct participation in application logic execution. The output current capability is defined by each backplane voltage rail, allowing system designers to calculate chassis loading according to installed module requirements.
Frequently Asked Questions (FAQ)
Q: What input voltage range is supported by the 1756-PB72K?
A: The module accepts 24 VDC nominal input with an operating range of 18 to 32 VDC.
Q: Which ControlLogix chassis can install the 1756-PB72K?
A: The module is compatible with 1756-A4, A7, A10, A13, and A17 chassis in Series A, B, and C configurations. It is mounted on the left side of the chassis.
Q: Does the 1756-PB72K provide multiple backplane voltage outputs?
A: Yes. The module supplies regulated 1.2 VDC, 3.3 VDC, 5.1 VDC, and 24 VDC backplane voltages for ControlLogix modules.
Field Installation Guidelines
Install the 1756-PB72K on the left side of the ControlLogix chassis and verify chassis compatibility before applying power. Connect the 24 VDC input supply using appropriately sized copper conductors and maintain correct polarity at the terminal block.
Route DC power wiring separately from high-voltage AC cables and high-current switching conductors to reduce electrical interference. Apply standard industrial grounding practices, including proper bonding of the control panel grounding system and shielding termination where shielded cables are used.
Before operation, verify chassis power loading against the installed module requirements and confirm that the total backplane current demand remains within the power supply output limits.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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