The OMRON B7A-R6B31 is a link terminal output unit designed as a receiver within the B7A wiring-saving system for industrial automation. This 16-point NPN open-collector output module processes I/O data transmitted over a simple two-wire cable from a B7A input unit, drastically reducing wiring complexity in distributed I/O architectures. Operating at 24 VDC (12 to 24 VDC ±10%), the unit delivers 0.1 A per output point with standard-speed I/O transmission at 19.2 ms delay and high noise immunity for long-distance installations.
Technical Specifications
• Output Type: NPN Open Collector
• Number of Output Points: 16
• Output Current Rating: 0.1 A per point
• Supply Voltage: 24 VDC nominal; 12 to 24 VDC ±10% operating range
• I/O Transmission Speed: Standard Speed, 19.2 ms I/O delay
• Data Transmission Protocol: Two-wire cable link from B7A input unit
• Connection Method: Screw terminals
• Weight: 0.14 kg
– Key Features
• Error handling with selectable HOLD (maintains output state) or LOAD OFF (disables all outputs) modes
• Automatic reset upon error correction
• High noise immunity optimized for long-distance signal transmission
• Compatible with OMRON CS1/C200HS/HX/HG/HE PLC series
• Stackable with other B7A series units for expanded I/O capacity
• Requires independent 24 VDC power supply
– Typical Applications
• Remote distributed I/O in machinery and factory automation
• Wiring reduction in multi-point sensor and actuator networks
• PLC I/O module expansion via terminal connection
• Industrial control systems requiring noise-robust signal transmission
– Compatibility & Integration
The B7A-R6B31 interfaces with OMRON PLCs by connecting its screw terminals to an I/O module mounted on compatible controllers. Direct connection to OMRON’s SYSMAC BUS Remote I/O System is not supported. An independent power supply is required due to voltage level requirements. Note: This product is obsolete and no longer manufactured by OMRON.
