You are here:
  1. Home
  2. Product
  3. Power Electronics
  4. Power Supply & Power Modules
  5. Allen-Bradley 1756-PB72 ControlLogix Power Supply
Sale!
SKU: 1756-PB72

Allen-Bradley 1756-PB72 ControlLogix Power Supply

The Allen-Bradley 1756-PB72 is a standard 24V DC power supply for ControlLogix systems. It provides 10A at 5.1V backplane power and features reinforced insulation for safety. This chassis-mounted unit ensures reliable performance in harsh industrial environments.

Request a Quote

The Allen-Bradley 1756-PB72 provides essential backplane power for ControlLogix controller systems. This unit converts a 24V DC input into multiple regulated output voltages. It supports the energy needs of processors and I/O modules within the chassis. Furthermore, the design prioritizes system stability in demanding industrial environments. The module mounts to the left side of the chassis frame. Consequently, it delivers power without occupying functional application slots.

Industrial Durability and Environmental Specs

The 1756-PB72 operates consistently under harsh manufacturing conditions. It resists heavy vibrations and significant electrical surges during daily operation. Moreover, the hardware maintains high performance within a wide temperature spectrum.

  • Operating Temperature: 0°C to 60°C (32°F to 140°F)
  • Humidity Levels: 5% to 95% non-condensing
  • Vibration Resistance: 2 G at 10–500 Hz
  • Surge Immunity: ±1 kV line-to-line; ±2 kV line-to-earth
  • Weight: 0.95 kg (2.10 lbs)

Installation and Monitoring Features

Wiring the 1756-PB72 is straightforward due to the accessible DC terminal block. The front cover protects the DC+ and DC- connections during active use. Furthermore, a dedicated status LED displays the health of the power supply. This visual indicator allows maintenance teams to verify operation at a glance. Engineers should ensure proper grounding to maximize safety and signal integrity. The unit remains compatible with Series A, B, and C ControlLogix chassis.

Safety and Compliance Standards

Rockwell Automation designed this module for professional industrial applications. It satisfies rigorous international standards for safety and electromagnetic compatibility. However, users should avoid residential installations to prevent potential radio interference. The compact footprint ensures the power supply fits within standard control cabinets easily. Overall, this module represents a dependable solution for 24V DC automation infrastructure.

Tags: ,

You may also like

Sale!
Allen-Bradley 1756-M16SE SERCOS interface Module

Allen-Bradley 1756-M16SE SERCOS interface Module

Configured for high-speed motion synchronization in ControlLogix systems, the Allen-Bradley 1756-M16SE (1756-M16SE SERCOS interface Module) provides direct physical and electrical execution for multi-axis servo drive command distribution.

Hardware Specifications

ParameterSpecification
Model1756-M16SE
BrandAllen-Bradley
OriginUSA
Weight0.22 kg
Dimensions3.5 cm x 14 cm x 14.5 cm
Operating TempStandard industrial range
Power ConsumptionBackplane dependent
Data Rate4 Mbps or 8 Mbps
Axis Capacity16 axes per module

PLC Control and Communication Characteristics

The 1756-M16SE utilizes high-speed backplane bus communication velocity to manage deterministic data exchange between the ControlLogix CPU and remote servo drive nodes. By leveraging digital fiber-optic SERCOS interfaces, the module achieves I/O density scaling that minimizes signal propagation latency across 16 managed axes. Furthermore, the module supports firmware flash compatibility, which allows for site-specific motion algorithm updates without physical hardware replacement. This deterministic network structure ensures that position, velocity, and torque command loops maintain sub-millisecond synchronization even in high-density drive configurations.

Frequently Asked Questions (FAQ)

Q: What are the primary limitations when configuring the SERCOS ring topology for the 1756-M16SE?A: The ring topology is limited by the physical length of the fiber-optic cabling and the total number of connected nodes; you must ensure the total loop latency does not exceed the configured cycle time (0.5 ms or 1.0 ms) to maintain deterministic operation.Q: Is the 1756-M16SE module capable of hot-swapping within an active ControlLogix chassis?A: The module supports standard ControlLogix hot-swap procedures; however, removing the module will immediately drop the SERCOS ring communication, causing all connected servo drives to transition to their programmed fault state.

Field Installation Guidelines

  • To begin with, confirm the ControlLogix chassis backplane is powered down; subsequently, insert the 1756-M16SE into a designated slot and secure it using the integrated module locking screws to ensure proper backplane contact.
  • In addition, route the SERCOS fiber-optic cables following the ring or linear topology requirements; meanwhile, maintain the minimum bend radius of the fiber to prevent micro-fractures that induce signal loss.
  • Furthermore, ensure all fiber-optic connectors are clean and free of contaminants before insertion into the module transceivers; consequently, this prevents optical attenuation that could lead to intermittent link failures.
  • Finally, configure the module addressing and axis scaling within the control software; by doing so, you ensure the controller can successfully establish the SERCOS communication cycle with the downstream Kinetix drives.
Sale!
Allen-Bradley 1756-L63 ControlLogix Standard Controller1756-L63 Allen-Bradley ControlLogix Processor Module

Allen-Bradley 1756-L63 ControlLogix Standard Controller

Secure the Allen-Bradley 1756-L63 ControlLogix Standard Controller with 8 MB user memory and integrated RS-232 connection. Brand New, Original Stock with Global Shipping. Minimize plant downtime and optimize your automation system now.
Sale!
The 1756-LSP does not store or process independent user logic

Allen-Bradley 1756-LSP GuardLogix Safety Partner Controller

The Allen-Bradley 1756-LSP is a ControlLogix GuardLogix safety partner co-processor engineered to achieve SIL 3 / PL e safety ratings. Brand new factory original surplus modules are available with quick international delivery. Ensure complete machine safety redundancy and secure your inventory spares today.
Sale!
Allen-Bradley 2094-BM02-S Servo Drive Axis Module

Allen-Bradley 2094-BM02-S Servo Drive Axis Module

The Allen-Bradley 2094-BM02-S, also cataloged as the 2094-BM02-S Servo Drive, operates as a dedicated hardware component for multi-axis motion control execution within ControlLogix platforms. The hardware acts as a modular inverter node mounted directly onto a shared integrated power rail system. It modulates raw DC link energy into high-frequency pulse-width modulation (PWM) power vectors to regulate the angular positioning, velocity, and torque outputs of synchronized permanent magnet synchronous motors.

Hardware Specifications

ParameterSpecification
Model2094-BM02-S
BrandAllen-Bradley
OriginUSA
Weight0.9 kg
Dimensions3.5 x 13 x 14.5 cm
Operating Temp0 to +50 deg C (Standard Industrial Range)
Power Consumption650 VDC nominal input / 115 Ohm internal shunt resistor
Module TypeServo Drive (Axis Module)
Product RangeControlLogix / Kinetix 6000
System ClassificationPLC Motion Control
Continuous Current10.3 A (RMS), 14.6 A (Sine Peak)
Velocity Loop Bandwidth500 Hz
Current Loop Frequency1300 Hz
Efficiency Rating98%

Industrial Control & Deterministic Driving Network

The Allen-Bradley 2094-BM02-S interacts directly over backplane bus communication velocity networks to achieve microsecond-level synchronization across adjacent drive modules. The hardware features deterministic network compatibility, letting control processors command motion trajectories with minimal jitter. It supports peak enhancement technology, scaling the nominal inverter output profile from a standard 150% threshold up to 250% during peak torque demands. This scaling permits rapid rotor acceleration and deceleration profiles without triggering overcurrent trips. Integrated Safe-Torque Off (STO) hardware circuits provide independent physical galvanic control paths, disabling gating signals to the output power transistors to prevent unexpected motor rotation during active maintenance states.

Frequently Asked Questions

Q: What are the backplane current and configuration limits when expanding axis modules on a single rail?A: The module must be inserted into an authorized Kinetix 6000 power rail, supporting up to seven axis modules alongside one master power module. The cumulative peak current draw must not exceed the structural rating of the shared copper backplane link.Q: Is this hardware compatible with live hot-swapping procedures?A: No. The shared 650 VDC bus lines pose arc-flash and component damage hazards. System DC bus voltage must be entirely drained and verified below safe thresholds before seating or unseating the module from the rail structure.Q: Can the internal 115 Ohm shunt resistor handle high-inertia braking loads?A: The internal shunt resistor is designed for short-duration thermal dissipation. High-inertia or cyclic deceleration applications require an external, isolated shunt module to prevent DC bus overvoltage faults.

Field Installation Guidelines

  • Enclosure Clearance & Thermal Profile: Maintain a minimum enclosure installation depth of 10.7 inches. Ensure unimpeded vertical ventilation spacing above and below the module chassis to prevent heat sink thermal saturation.
  • Cable Separation Architecture: Physically isolate unshielded high-voltage power cables, including motor leads and shunt resistor lines, from low-level digital feedback encoder loops and communication wires to suppress cross-talk.
  • Shielding and Ground Boundary: Terminate all motor cable shields at the designated grounding clamp on the power rail base. Maintain a low-impedance ground plane across the entire mounting subpanel.
  • Overcurrent Protection: Install specified circuit breakers or high-speed semiconductor fuses upstream of the main power distribution block to guard the internal solid-state components against phase-to-phase short circuits.
Sale!
Allen-Bradley 1756-IB16 Digital I/O Module

Allen-Bradley 1756-IB16 Digital I/O Module

The Allen-Bradley 1756-IB16 is a 16-point, 24V DC sinking digital input module for ControlLogix systems. It offers configurable filtering, Change of State detection, and group-to-group isolation to ensure reliable signal acquisition in demanding industrial automation environments.
Sale!
Allen-Bradley 1756-L62 ControlLogix Logix5562 Processor

Allen-Bradley 1756-L62 ControlLogix Logix5562 Processor

The Allen-Bradley 1756-L62 is a Logix5562 processor featuring 4 MB of user memory and 128,000 I/O capacity. This ControlLogix module supports 32 tasks and redundancy for high-availability industrial control. It remains a reliable solution for maintaining legacy factory automation systems.
Sale!
Allen-Bradley 1756-OA16I AC Digital Output Module

Allen-Bradley 1756-OA16I AC Digital Output Module

The Allen-Bradley 1756-OA16I is a 16-point isolated AC digital output module for ControlLogix systems. It supports 75-265 VAC operation and 2A per point current capacity. This reliable 120/240V module provides per-channel isolation for demanding industrial control applications.
Sale!
Allen-Bradley 1756-L55M14 Controller Processor

Allen-Bradley 1756-L55M14 Controller Processor

The Allen-Bradley 1756-L55M14 is a Logix5555 controller featuring 3.5MB of user memory and 208KB of I/O memory. It supports multi-protocol communications including EtherNet/IP and ControlNet for advanced distributed control and high-speed industrial processing.