Allen Bradley 1734-RTBCJC POINT I/O Removable Terminal Block

Configured for cold junction compensation signal routing in EtherNet/IP deterministic networks, the Allen-Bradley 1734-RTBCJC (1734-RTBCJC Terminal Block) provides direct physical/electrical execution.

Hardware Specifications

Backplane Bus Communication Velocity and Deterministic Networks

• The Allen-Bradley 1734-RTBCJC integrates directly onto the terminal base assembly to interface temperature sensor input channels across EtherNet/IP deterministic networks.
• Embedded cold junction compensation (CJC) sensors provide real-time ambient reference point temperature measurements directly to the underlying thermocouple module to maintain signal processing accuracy.
• High-density I/O wiring scaling is maintained via 8 dedicated screw-clamp terminals while preserving signal isolation from adjacent backplane bus communication velocity pathways.
• Passive pass-through terminal design ensures firmware flash compatibility across primary controller racks without introducing communication latencies.

Frequently Asked Questions

Q: What primary function does the integrated CJC perform on the 1734-RTBCJC terminal block?

A: The cold junction compensation (CJC) thermistor provides local reference junction temperature monitoring to enable accurate millivolt-to-temperature conversion when using thermocouple I/O modules.

Q: How is the 1734-RTBCJC physically mounted in an I/O assembly?

A: The unit mounts directly onto a standard 1734 terminal base assembly installed on a standard 35 mm DIN rail.

Field Installation Guidelines

Mount the 1734 terminal base assembly firmly onto a grounded 35 mm DIN rail prior to locking the 1734-RTBCJC into place. Strip thermocouple extension wires to proper length before securing conductors into the 8 screw-clamp terminals. Avoid routing thermocouple leads in close proximity to high-voltage AC cables or drive outputs to prevent inductive noise interference with cold junction sensor readings. Ensure ambient temperature around the terminal block remains uniform by preventing direct drafts or nearby heat dissipation sources from disturbing the CJC reference node.