GE IC693TCM302B Series 90‑30 8‑Zone Thermocouple PID Temperature Control Module

Description

Hardware & Electrical Specifications

‑ Model：IC693TCM302B ‑ Part Number：IC693TCM302B ‑ Module Type：Series‑90‑30 8‑Channel Thermocouple PID Temperature Control Module ‑ Mounting：Plug‑in any I/O slot on main baseplate or expansion baseplate ‑ Backplane power：5 VDC @150 mA drawn from rack backplane ‑ Thermocouple input：  • Channels：8 isolated thermocouple inputs  • Supported sensor：Type J, K, L thermocouple; 1‑channel RTD cold‑junction compensation reference  • Resolution：12‑bit (≈0.2 °C)  • Typical accuracy：±1 °C under auto‑calibration @25 ℃  • Max thermocouple wire impedance：30 Ω per channel  • Common‑mode voltage tolerance：±12 V ‑ PWM control output：  • Channels：8 sourcing PWM DC outputs  • Output voltage：18‑30 VDC external field power  • Per‑channel max load current：100 mA  • Off‑state leakage current：≤0.1 mA  • PWM period：0.1‑60 s software configurable per channel ‑ Diagnostics：Open‑thermocouple detection, reverse‑polarity detection, temperature out‑of‑range alarm, short‑circuit protection ‑ Fuse：Internal replaceable 2A sub‑miniature fuse ‑ Terminals：Two 20‑pin captive screw terminal connectors ‑ PCB treatment：Conformal coated for dust‑moisture‑corrosion resistance ‑ Compatibility note：Cannot run standalone; match Series‑90‑30 CPU; external 18‑30VDC must supply output load power; thermocouple signal wiring shall use dedicated thermocouple compensation cable; full temperature‑loop simulation test mandatory after replacementQualitrol。

Environmental Specifications

‑ Operating temperature：0 ℃ ~ +55 ℃ ‑ Storage temperature：‑40 ℃ ~ +85 ℃ ‑ Relative humidity：5%‑95% non‑condensing ‑ Installation location：Indoor industrial control cabinet, IP20 ‑ Vibration：1.0 g 9‑150 Hz; shock 15 g /11 ms 3‑axis ‑ EMC compliance：IEC 61000‑6‑2 ‑ Certifications：CE, UL Class I Div 2 hazardous‑location certification

Mechanical Data

‑ Weight：approx 110 g ‑ Dimension：Series‑90‑30 standard single‑slot module form‑factor ‑ Handling note：ESD‑sensitive measuring circuit; must use thermocouple compensation wire; pay attention to internal fuse status during maintenance

Main Functions

1. 8 independent temperature control loops, each channel selectable closed‑loop PID auto‑control or open‑loop manual PWM output, PID algorithm runs inside module, reduces PLC CPU load.
2. Thermocouple temperature acquisition with automatic cold‑junction compensation; support external RTD reference for higher measuring precision.
3. Rich channel diagnostics: thermocouple open‑circuit, reverse connection, temperature deviation alarm, upload fault status to PLC register.
4. Data exchange with Series‑90‑30 CPU via backplane bus: set‑point, PID parameters, manual output value download; measured temperature, fault status upload.
5. LED status indication on front panel:   ‑ Green PWR：Module power‑on indicator   ‑ Green RUN：Module running normal   ‑ Red FAULT：Module hardware / channel fault   ‑ SHORT：Output short‑circuit alarm   ‑ 8‑channel individual LED：PWM output status for each zone

Installation & Wiring Requirements

1. Cut off PLC rack power and external PWM output field power before replacement. Hot‑swap is forbidden. Strict anti‑static protection when handling module.
2. Insert IC693TCM302B fully into backplane I/O slot and lock latch.
3. Thermocouple wiring: use special thermocouple compensation cable; keep signal cable away from high‑power power cable; do not share ground with high‑current circuit.
4. PWM output circuit: external 18‑30 VDC power supply for heater loads; each output channel shall add external fuse according to load; inductive heater coil recommend parallel absorption component.
5. Complete protective grounding according to GE Series‑90‑30 hardware manual specification.
6. After replacement：power‑on rack, verify PWR/RUN/FAULT/SHORT LED status; download module configuration and PID parameters; perform thermocouple measuring test and closed‑loop temperature control test for every channel.
7. Replacement note: Check internal 2A fuse; strictly use compensation wire for thermocouple input; full‑loop commissioning test mandatory before unit put‑into‑service.