1756-TBCHS | Allen-Bradley ControlLogix 36-Pin Screw Terminal Block

The 1756-TBCHS is designed to provide a secure and organized connection point for field wiring to ControlLogix modules. It features 36 screw terminals that allow easy and reliable connections for a variety of signal types, including digital and analog I/O. Its design simplifies wiring tasks by clearly identifying each terminal, reducing wiring errors and simplifying troubleshooting. The terminal block is also designed to fit seamlessly into ControlLogix chassis assemblies. Its robust construction ensures reliable operation in industrial environments where vibration and temperature changes can challenge other connection methods.

To install the 1756-TBCHS, it should be mounted directly onto a ControlLogix I/O module or carrier in the appropriate slot. Wiring to the terminal block is performed using copper conductors sized 22 to 14 AWG for single wire connections or 22 to 16 AWG for double wire connections. Each screw terminal requires a tightening torque of 0.5 Nm (4.4 lb-in) to ensure secure connections. Care should be taken to strip and prepare wires properly to avoid loose strands or shorts. Once installed, ensure that the wiring is neatly routed and labeled to facilitate future maintenance and troubleshooting.

The 1756-TBCHS has a maximum power dissipation of 6.19 Watts. This rating ensures that the terminal block can handle the heat generated during normal operation without compromising performance. However, users should ensure proper ventilation and adherence to recommended environmental conditions to prevent overheating.

The 1756-TBCHS simplifies system maintenance and troubleshooting by providing clear and accessible connections to field devices. Each screw terminal is clearly labeled, making it easy to identify and trace circuits during maintenance activities. This design reduces the likelihood of wiring errors and speeds up fault isolation and repair.

Yes, the Allen-Bradley 1756-TBCHS is currently in production and actively available from authorized distributors. Rockwell Automation supports this product as part of its ControlLogix system, making it a reliable choice for new and existing installations.