1769-PB2 Allen-Bradley CompactLogix 24V DC Power Supply Module

1769-PB2 CompactLogix DC Power Supply – 24V, 2.0A @5V / 0.8A @24V

Brand: Allen-Bradley / Rockwell Automation
Series: CompactLogix 1769
Catalog No.: 1769-PB2
Type: I/O DC Power Supply Module

The 1769-PB2 is a dedicated I/O power supply for the CompactLogix platform. It accepts 19.2–31.2V DC input and delivers 2.0 A @ 5V DC and 0.8 A @ 24V DC. This module powers up to 16 I/O modules (8 on each side). It features a built-in fuse (Wickmann 19193-6.3A or Littelfuse 021706.3MXP) and supports both DIN rail and panel mounting.

Technical Data – 1769-PB2

• Input voltage range: 19.2–31.2 VDC (nominal 24 VDC)
• Current capacity: 2.0 A @ 5V DC / 0.8 A @ 24V DC
• Power consumption: 50 VA @ 24V DC; dissipation 7.5 W @ 60 °C
• Inrush current (max): 30 A @ 31.2V DC
• Fuse type: Littelfuse 02153.15MXP / Wickmann 19195-3.15A
• Wire size: 14 AWG solid copper (90 °C rated), 22–14 AWG stranded
• Dimensions (HxWxD): 118 x 70 x 87 mm (4.65 x 2.76 x 3.43 in.)
• Weight: 485 g (1.07 lb) – shipping 2 lbs (8x8x5 in.)
• Enclosure: Open type (must be mounted in a protective cabinet)
• Certifications: c-UL-us, CE, C-Tick

Mounting & Wiring – Quick Guide

• Mounting: DIN rail or direct panel (tabs included).
• Wire: 14 AWG solid copper, 90 °C insulation, max 1.2 mm thickness.
• Terminals: Barrier-type with finger-safe covers.
• Distance rating: 8 modules per side (16 total).
• Ride-through: 10 ms to 10 sec line loss protection.

Oiltech Controls’s Insight

• The 1769-PB2 is the standard power choice for CompactLogix expansion banks.
• Always verify total current draw of connected modules – do not exceed 2.0A @5V.
• Use the correct fuse type (Wickmann or Littelfuse) to avoid nuisance trips.
• For high-vibration environments, panel mounting is preferred over DIN rail.
• This supply supports both Series A and B CompactLogix bases.

Typical Applications & Compatible Devices

• CompactLogix 1769-L2, -L3, -L4 controller systems.
• Expansion I/O banks with digital, analog, and specialty modules.
• Remote I/O panels in manufacturing and process control.
• Replacement for failed 1769-PB2 in existing installations.
• New CompactLogix system builds requiring isolated I/O power.

Why Buy From Oiltech Controls?

• 15+ years in industrial automation – we know legacy and current systems.
• Global delivery via FedEx, UPS, DHL – 24–28 hour dispatch.
• Every unit tested and verified before shipping.
• 12-month warranty for peace of mind.
• Support for obsolete and hard-to-find control components.

Contact: info@oiltechcontrols.com | +86 158 8020 0923 (WhatsApp)

Professional FAQ – 1769-PB2 Selection & Use

Q1: Can the 1769-PB2 power both analog and digital I/O modules?
A: Yes. It supplies 5V and 24V rails. Ensure total 5V current ≤2.0A and 24V ≤0.8A. Most mixed systems work, but calculate your load.

Q2: What happens if I exceed the 16-module limit?
A: The power supply may trip or cause voltage sag. Use an additional 1769-PB2 or a 1769-PA4 for larger systems. We recommend staying within 14 modules for headroom.

Q3: The module shows no output – what should I check first?
A: Check the internal fuse (Wickmann 19193-6.3A or Littelfuse 021706.3MXP). Also verify input voltage and polarity. Many field failures are fuse-related due to inrush.

Q4: Can I use this supply with 1769-ECR or 1769-ECL cables?
A: Yes, the 1769-PB2 works with all CompactLogix expansion cables. Distance rating applies per side regardless of cable length.

Q5: What is the difference between 1769-PB2 and 1769-PA4?
A: 1769-PB2 is DC input (24V), while 1769-PA4 is AC input (120/240V). Choose PB2 for DC systems or when using battery-backed DC supplies.

Original Source: https://www.oiltechcontrols.com/

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