Description

GE IS230STTCH1A Simplex Thermocouple Input Terminal Board

The GE IS230STTCH1A, also cataloged as the IS230STTCH1A Simplex Thermocouple Input Terminal Board, operates as a dedicated hardware component for thermocouple temperature signal acquisition within GE Mark VI/Mark VIe turbine control systems. The board provides conditioned temperature inputs from field thermocouple sensors to controller processing channels.

Hardware Specifications

Parameter	Specification
Model	IS230STTCH1A
Brand	GE
Origin	United States
Weight	0.5 kg
Operating Temp	-30 deg C to +65 deg C
Power Consumption	Not specified
Series	Mark VI / Mark VIe Speedtronic
Product Type	Simplex Thermocouple Input Terminal Boards
Input Channels	24 thermocouple input channels
Supported Thermocouple Types	Type E, J, K, S, T
Signal Conditioning	EMI filtering, linearization, and scaling
Cold Junction Compensation	Integrated CJC circuitry
Isolation	Channel-to-channel and channel-to-ground isolation
Terminal Interface	Barrier terminal strips for direct thermocouple wiring
Storage Temperature	-40 deg C to +85 deg C
Humidity Range	5% to 95% non-condensing
Mounting	Standard Mark VI rack slot
Compliance	IEC 60584 thermocouple standard

Industrial Control Signal Processing and I/O Density Scaling

The IS230STTCH1A is designed for GE Mark VI/Mark VIe control architectures, providing thermocouple signal termination and temperature measurement interface functions. The board processes multiple temperature input channels through signal conditioning circuits, including cold junction compensation, linearization, and EMI filtering.

The terminal board supports I/O density scaling within Mark VI control cabinets by combining 24 thermocouple input points into a single simplex interface assembly. Firmware flash compatibility and communication behavior depend on the connected GE controller and I/O processing hardware.

Channel isolation separates individual temperature measurement circuits from adjacent signals and control electronics, reducing interference during analog temperature acquisition.

Frequently Asked Questions

Q: Which thermocouple types are supported by the IS230STTCH1A?
A: The board supports Type E, J, K, S, and T industrial thermocouple inputs.

Q: What is the purpose of the CJC function on the IS230STTCH1A?
A: The cold junction compensation circuit corrects thermocouple reference junction effects to improve temperature measurement processing.

Q: How many temperature input channels are available on the IS230STTCH1A?
A: The board provides 24 thermocouple input channels in simplex configuration.

Field Installation Guidelines

Install the IS230STTCH1A in the designated GE Mark VI/Mark VIe rack position and confirm proper mechanical seating before connecting field wiring.

Use thermocouple extension cables matching the installed thermocouple type. Maintain separation between temperature signal wiring and high-current switching or power cables to reduce electromagnetic interference.

Connect cable shields according to the control cabinet grounding standard. Verify thermocouple polarity, terminal identification, and channel assignments before system startup.

Inspect terminal strip connections and field cable insulation during maintenance operations. Avoid routing thermocouple wiring near sources of electrical noise such as contactors, motors, and power converters.

Specifications

• Brand: General Electric

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems