Overview
The Allen-Bradley 1769-PB4 is a dedicated power supply module for CompactLogix Compact I/O systems. Built for modular distributed I/O architectures, the 1769-PB4 accepts external 19.2–31.2 VDC input (nominal 24VDC) and distributes regulated 5V and 24V rails to support up to eight I/O modules on each side of the unit. This power supply is essential for systems requiring compact, DIN rail-mountable power distribution with industrial-grade reliability.
Key Features
- High current capacity: 4.0 A at 5VDC, 2.0 A at 24VDC with 30 A maximum inrush current handling
- Modular connectivity: Supports up to 16 Compact I/O modules (8 per side) for scalable I/O expansion
- Dual voltage outputs: Simultaneous 5V and 24V rail distribution for diverse module requirements
- Multiple mounting options: DIN rail or panel-mount configuration for flexible installation
- Wide input voltage range: 19.2–31.2 VDC accommodates common 24VDC industrial supplies with tolerance
- Status indication: Built-in LEDs for quick power and module diagnostics
Technical Specifications
- Input Voltage Range: 19.2–31.2 VDC (nominal 24VDC)
- Output Current (5V rail): 4.0 A maximum
- Output Current (24V rail): 2.0 A maximum
- Maximum Inrush Current: 30 A
- Power Consumption: 100 VA @ 24V DC
- Power Dissipation: 14.5 W @ 60°C
- Operating Temperature: 0–60°C
- Non-Operating Temperature: −40–85°C
- Humidity (operating): 5–95% non-condensing
- Mounting: DIN rail or panel mount
- Isolation Voltage: 75 V continuous (IEC Class 1 grounding required)
- Certifications: UL, CUL, CE, C-TICK, CCC, GOST, KC, MARINE
- Maximum Altitude: 2000 m (6562 ft)
Typical Applications
- Distributed I/O control in compact automation systems
- CompactLogix controller satellite I/O expansion
- Machine control and process automation with modular I/O architecture
- DIN rail-mounted industrial control panels requiring compact power distribution
- Integration with PowerFlex drives and Compact I/O communication modules
- Facilities requiring multiple Compact I/O banks under single controller supervision
Compatibility & Replacements
Compatible With
- CompactLogix L1/L2/L3x controllers (requires communication adapter module for remote banks)
- 1769 Compact I/O module series (digital input, digital output, analog I/O)
- 1769-SDN DeviceNet communication modules
- 1769-AENTR EtherNet/IP gateway modules
- PowerFlex drives via DPI/SCANport and DSI/Modbus adapter modules
- PanelView and PanelView Plus HMI platforms
Replaces / Drop-In Replacement For
- Direct replacement for original 1769-PB4 units in existing CompactLogix Compact I/O systems
- Verify compatibility with your system integrator before ordering to ensure module configuration and firmware compatibility
Works With
- Studio 5000 Logix Designer (program development and controller communication)
- EtherNet/IP protocol (via compatible communication modules)
- DeviceNet (via 1769-SDN module)
- Modbus TCP (via open socket capability on CompactLogix)
- DIN rail industrial panel mounting systems
