Description

GE IS230SRTDH2A RTD Input Terminal Board

The GE IS230SRTDH2A, also cataloged as the IS230SRTDH2A RTD Input Terminal Board, operates as a dedicated hardware component for RTD signal termination and temperature data conditioning within the GE Mark VIe turbine control system. The board provides 16 RTD input channels, sensor excitation, signal isolation, and conditioned analog transmission to I/O packs for turbine temperature measurement circuits.

Hardware Specifications

Parameter	Specification
Model	IS230SRTDH2A
Brand	GE
Origin	United States
Weight	0.7 kg
Dimensions	200 mm x 150 mm x 35 mm
Operating Temp	-30 deg C to +65 deg C
Power Consumption	Supplied from 28 VDC system distribution
Input Channels	16 RTD input channels
Sensor Compatibility	Pt100, Ni120, Cu10 and other RTD types
Input Configuration	2-wire and 3-wire RTD connection support
Temperature Range	-200 deg C to +850 deg C
Excitation Current	Approx. 1 mA per channel
Resolution	0.1 deg C
Accuracy	+/- 0.5 deg C typical
Isolation	Channel-to-channel and channel-to-ground isolation
Field Connection	Screw terminals for field wiring
Controller Interface	Ribbon connector interface to Mark VIe I/O packs
Compliance	IEC 61010-1, UL 508, CE industrial standards

Industrial Control Signal Conditioning and I/O Interface

The IS230SRTDH2A integrates RTD measurement conditioning within the GE Mark VIe control architecture. The terminal board receives low-level resistance signals from temperature sensors, applies excitation current, and transfers conditioned measurement data through the connected I/O interface. The design supports I/O density scaling through 16 independent temperature input channels while maintaining channel isolation for distributed turbine monitoring circuits.

The board supports Profinet and Ethernet-based Mark VIe control network architectures through the associated I/O pack interface. Firmware flash compatibility is managed at the connected controller and I/O pack level, while the terminal board provides the physical termination layer for sensor wiring.

Frequently Asked Questions (FAQ)

Q: What RTD sensor configurations are supported by the IS230SRTDH2A?
A: The board supports 2-wire and 3-wire RTD connections, including Pt100, Ni120, Cu10, and compatible resistance temperature detector types.

Q: Does the IS230SRTDH2A provide electrical isolation between measurement channels?
A: Yes. The board provides channel-to-channel and channel-to-ground isolation for RTD measurement circuits.

Q: How is the RTD signal transferred to the Mark VIe controller?
A: The board terminates field RTD wiring and sends conditioned signals through ribbon connectors to compatible Mark VIe I/O packs.

Field Installation Guidelines

Install the IS230SRTDH2A on the designated Mark VIe terminal board mounting assembly and verify mechanical fixation before field wiring.

Connect RTD sensor cables according to the specified terminal assignments. Use shielded instrumentation cable for analog temperature circuits where required, and terminate cable shields following the plant grounding standard. Keep RTD wiring separated from high-voltage power cables and high-current switching conductors to reduce electromagnetic interference.

Verify sensor polarity, wire configuration, and terminal tightness before energizing the control system. Confirm that connected I/O packs recognize the terminal board configuration and that RTD channel values correspond with the installed field sensors.

Specifications

• Brand: General Electric

Advantages

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