1756-TBCH Allen Bradley ControlLogix 36 Pin Screw Terminal Block

Key parameters

Electrical characteristics

Signal type support: -J /K/T/E/R/S/B/N type thermocouples

±50mV, ±100mV millivolt signal

Resolution: - ±50mV Range: 15,000 counts (approximately 3μV/count)

±100mV range: 30,000 counts

Accuracy (25°C) : ±0.1% full scale (thermocouple), ±0.05% full scale (mV)

Sampling rate (for all channels) : 10ms(default), configurable

Input impedance: >1MΩ

Environment and Machinery

Operating temperature range: 0°C to +60°C

Storage temperature range: -40°C to +85°C

Protection grade: IP20(Needs to be installed in the ControlLogix chassis)

Connection and Configuration

Wiring method: Connect the thermocouple /mV sensor through the detachable terminal block (1756-TBNH).

Cold junction compensation (CJC): Built-in cold junction compensation sensor (±1°C accuracy), requires regular calibration.

Core function

Support for multiple types of thermocouples: Automatic identification of J/K/T/E/R/S/B/N type thermocouples without the need for external transmitters.

High-precision millivolt measurement: Directly process ±50mV/±100mV tiny signals.

Real-time diagnosis: Detect faults such as disconnection, short circuit, and over-range, and trigger alarms through Studio5000.

CIP Sync synchronization: Supports IEEE1588 Precise Time Protocol (PTP), synchronizing the sampling clocks of multiple modules (error <1μs).

Typical application scenarios

High-temperature process monitoring

Steel plant: Type B thermocouples are used to measure furnace temperatures above 1600°C.

Glass furnaces: Long-term stable monitoring of R/S type thermocouples.

Micro signal acquisition

Laboratory equipment: ±50mV bioelectric signal recording.

Weighing system: Preprocessing of MV-level weighing sensor signals before amplification.

Distributed temperature control

Multiple modules are networked via EtherNet/IP to synchronously monitor the temperatures of each area of the large-scale reaction vessel.

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