Overview
The Opto 22 PB4R is a G1 4-channel isolated output-only module rack engineered for industrial automation and legacy control systems. This mounting board accommodates up to four G1 single-channel digital output modules and provides complete channel-to-channel isolation between all field and control circuits. The PB4R is purpose-built for applications requiring robust barrier strip connections on both the field and logic sides, making it an ideal solution for interfacing disparate logic families and voltage levels.
Key Features
- 4-channel isolated output architecture with no common connections between channels
- Supports mixed logic voltages: 5 VDC, 15 VDC, and 24 VDC on the same rack
- Accommodates both positive-true and negative-true logic protocols
- 6-32 screw terminals on field and logic sides for reliable wiring
- LED status indicator for each channel (when modules installed)
- User-replaceable fuses for module protection
- Compact form factor: 4.5 x 3.5 inches (114.3 x 88.9 mm)
Technical Specifications
- Part Number: PB4R
- Series: G1 (Generation 1)
- Channel Count: 4-channel output
- Module Type: Digital output only
- Logic Voltages Supported: 5 VDC, 15 VDC, 24 VDC
- Logic Type: Positive-true or negative-true (selectable per point)
- Connector Type: 4-pin module connector
- Field Terminals: 6-32 screw barrier strips
- Dimensions: 4.5 x 3.50 inches (114.3 x 88.9 mm)
- Thickness: 2.2 inches
- Weight: 0.42 lbs
- Operating Temperature: 0 to 70°C (32 to 158°F)
- Humidity: 95% relative humidity, non-condensing
- RoHS Compliant: Yes
Typical Applications
- Legacy industrial automation systems requiring isolated output logic
- Multi-voltage control environments with mixed 5V, 15V, and 24V circuits
- Logic family bridging (e.g., PC logic to PLC voltage conversion)
- Enclosure-mounted output module configurations
- OEM equipment retrofits and replacements
Compatibility & Replacements
Compatible With
- Opto 22 G1 digital output modules (single-channel)
- Optomux E2 brain boards
- 5 VDC, 15 VDC, and 24 VDC logic controllers
- Positive-true and negative-true logic protocols
Replaces / Drop-In Replacement For
- Original Opto 22 PB4R units in legacy G1 I/O systems
- Equivalent 4-channel isolated output racks from Opto 22 G1 product line
Works With
- Opto 22 G1 I/O module family (digital output modules only)
- Standard industrial control circuits and programmable controllers
- Legacy automation software and interfaces compatible with Opto 22 G1 systems
