The Core Analog I/O Terminal Board is a standard Mark VIe TCAS-type terminal board, designed as the front-end wiring and signal conditioning interface for PCAA analog I/O modules.
It provides reliable termination, isolation, and conditioning for field analog signals while fully supporting the fault-tolerant and redundant architecture of the Mark VIe control system.

2. System Compatibility

Control system: GE Mark VIe

Compatible terminal board types: TCAS, PCAA

Compatible I/O modules:

IS230PCAAH1A

IS230PCAAH1B

Other Mark VIe PCAA-series modules

3. Channel Configuration

Total channels:

10 basic analog channels (TCAS standard configuration)

4. Supported Signal Types

Current input: 4–20 mA

Voltage input: ±5 V, ±10 V

Thermocouples:

J / K / T and other standard types

Integrated cold-junction compensation for thermocouple measurement

5. Electrical Characteristics

Power supply: 28 VDC (supplied by PCAA module)

Channel isolation:

Electrical isolation between channels

Isolation rating: 1500 Vrms

Designed to enhance noise immunity and system anti-interference capability

6. Communication and Diagnostics

Onboard identification (ID) chip:

Automatic terminal board recognition

Supports channel-level fault diagnosis

Seamless integration with Mark VIe diagnostics and maintenance tools

7. Redundancy and Reliability

Fully supports TMR (Triple Modular Redundancy)

Compatible with Mark VIe fault-tolerant architecture

Suitable for redundant I/O configurations in high-availability systems

8. Mechanical and Installation Specifications

Wiring terminals:

High-density Euro-block terminal connectors

Installation method:

DIN-rail mounting

Secured with metal fixing bracket

Dimensions: approx. 15 cm × 10 cm × 5 cm

Weight: approx. 0.6 kg

GE IS400TCASH1AGD｜Analog Module Terminal Board｜