Overview
The Opto 22 PB4 is a 4-channel I/O mounting rack engineered for integration with Opto 22 Generation 1 (G1) single-channel input and output modules. This board accommodates both digital input and output modules, making it a flexible platform for distributed control applications that require barrier strip termination on both field and logic sides.
Key Features
- 4-channel I/O module positions with dual 18-pin barrier strips
- Accepts both G1 input and output module types in any combination
- 5A replaceable fuse and status LED at each module position for diagnostics
- Compatible with 5V, 15V, and 24V module power supplies
- 6-32 screw terminals for field and logic side connections
- Compact footprint ideal for panel-mount installations
Technical Specifications
- Part Number: PB4
- Manufacturer: Opto 22
- Product Type: I/O Mounting Rack (G1 Family)
- Channel Count: 4 channels
- Pin Configuration: 18-pin dual barrier strips
- Terminal Type: 6-32 screw terminals
- Supported Voltages: 5V, 15V, 24V DC
- Fuse Rating: 5A replaceable at each position
- Dimensions: 4.50 in. L × 3.50 in. W × 2.2 in. thick
- Weight: 0.42 lbs
- Operating Temperature: 0–70°C, 95% RH non-condensing
- Certification: RoHS compliant
Typical Applications
- Discrete process control and automation systems
- Machine control panels and operator stations
- Safety interlock and alarm circuits
- Remote I/O distribution in industrial environments
- Field-mounted control solutions requiring filtered input/output
- Legacy system retrofits and modernization projects
Compatibility & Replacements
Compatible With
- Opto 22 G1 single-channel digital input modules
- Opto 22 G1 single-channel digital output modules
- Opto 22 G1 solid-state relay modules
- 5V, 15V, and 24V DC power supplies
- Industrial control panels and enclosures
Replaces / Drop-In Replacement For
- Original equipment PB4 mounting racks in legacy Opto 22 systems
- Equivalent 4-channel G1 I/O racks from industrial control upgrades
Works With
- Opto 22 G1 I/O module ecosystem
- Standard industrial enclosure mounting systems
- Barrier-strip-based control wiring practices
- Discrete logic control applications and SCADA systems
