Overview
The Opto 22 PB4R is a G1 4-channel isolated output-only module rack engineered for reliable digital I/O applications in industrial automation. This mounting board accommodates up to four standard (Generation 1) single-channel output modules and provides complete channel-to-channel isolation, eliminating common connections between channels on both logic and field sides. The PB4R is widely used in legacy and modern control systems where mixed-voltage logic interfacing is required.
Key Features
- 4-channel capacity for G1 standard single-channel output modules
- Complete channel isolation—no common connections between channels
- Support for 5VDC, 15VDC, and 24VDC logic levels
- 6-32 screw terminals on both field and logic sides
- Compatible with positive-true and negative-true logic families
- LED status indicator for each channel
- User-replaceable fuses
Technical Specifications
- Product Type: Output Module Rack (G1 4-channel isolated output)
- Channel Count: 4 channels
- Supported Logic Levels: 5VDC, 15VDC, 24VDC
- Field Connection: 6-32 screw terminals
- Logic Connection: 6-32 screw terminals
- Dimensions: 4.5 × 3.5 inches (114.3 × 88.9 mm)
- Thickness: 2.2 inches
- Operating Temperature: 0–70 °C (32–158 °F)
- Humidity: Up to 95% relative humidity, non-condensing
- Weight: 0.42 lbs
- RoHS Compliance: Yes
- Module Family: PB series
Typical Applications
- Industrial control systems requiring isolated output channels
- Logic-level interfacing between different PLC families (5V PC logic to 24V controller logic)
- Legacy and retrofitted automation systems
- Applications requiring positive-true and negative-true logic compatibility
- Field-side barrier strip isolation for safety-critical applications
Compatibility & Replacements
Compatible With
- Opto 22 G1 standard single-channel output modules
- Opto 22 SNAP PAC controllers
- Standard (Generation 1) Opto 22 I/O product family
- Systems requiring 5V, 15V, or 24V logic interfaces
- PLC systems and industrial automation controllers
Replaces / Drop-In Replacement For
- Original equipment Opto 22 PB4R output racks in legacy systems
- Verify compatibility with your system integrator before ordering for specific application requirements
Works With
- Opto 22 G1 output module family (4, 8, 16, 24, or 32-channel configurations)
- Standard industrial automation platforms using Opto 22 products
- Mixed-logic environments requiring voltage translation and isolation
