IS230TNCIH4C GE

Product Parameters

Advantages and Key Features

• Enhanced Signal Conditioning – The IS230TNCIH4C features improved RC filtering and noise rejection circuitry compared to earlier revisions, ensuring reliable analog signal acquisition in high‑EMI environments such as turbine generator areas and VFD installations.

• Improved ESD Protection – Enhanced ESD protection (IEC 61000‑4‑2 Level 3) protects the IS230TNCIH4C and connected I/O modules from electrostatic discharge during maintenance and field wiring operations.

• Dedicated Current/Voltage Termination – Optimized for current and voltage analog signals, providing reliable termination for the IS220PAICH1A, IS220PAICH1B, and IS220PIOAH1A modules.

• Jumper‑Configurable Signal Type – Each channel on the IS230TNCIH4C can be configured for current (4–20 mA, 0–20 mA) or voltage (0–10 V, ±10 V) via simple jumper settings.

• Integrated Termination Resistors – Provides mounting locations for termination resistors (typically 250 Ω) for current inputs, eliminating external resistor installation.

• Pluggable Terminal Design – The IS230TNCIH4C features a 2‑piece pluggable terminal block design, allowing field wiring to be disconnected without removing individual wires, simplifying maintenance and module replacement.

• Wide Wire Range – Accepts wire gauges from AWG 24 to AWG 14.

• Flame‑Retardant Housing – UL 94 V‑0 rated material provides safety in the event of electrical faults.

Application Fields and Use Cases

1. Pressure Monitoring

The IS230TNCIH4C connects 4–20 mA pressure transmitters to the IS220PAICH1B, providing critical pressure data for turbine control and protection.

2. Flow Monitoring

Provides connections for 4–20 mA flow meters for monitoring fuel gas, steam, and cooling water flow.

3. Temperature Transmitter Monitoring

Connects 4–20 mA temperature transmitters, enabling temperature monitoring without direct thermocouple or RTD termination.

4. Valve Positioner Control

Provides connections for 4–20 mA analog outputs to valve positioners, enabling precise control of fuel valves, steam admission valves, and other actuators.

5. Level Monitoring

Connects 4–20 mA level transmitters in auxiliary systems (lube oil tanks, water treatment) for automated control and alarm annunciation.

6. Retrofit Projects

The IS230TNCIH4C is the recommended upgrade from legacy Mark VI analog termination boards (IS200TNCIH4C) for Mark VIe upgrades, offering pluggable connections and improved noise rejection.

Comparison with Competing Products

Key Differentiators: The IS230TNCIH4C is an enhanced revision of the IS230TNCIH4, offering improved filtering, better ESD protection, and extended temperature range. It is specifically optimized for analog current/voltage signals, providing reliable termination for the IS220PAICH1A, IS220PAICH1B, and IS220PIOAH1A modules. Its pluggable design significantly improves maintainability over legacy Mark VI boards.

Selection Suggestions and Precautions

Selection Criteria

• Choose the IS230TNCIH4C for analog I/O applications requiring dedicated current/voltage signal termination with the IS220PAICH1A, IS220PAICH1B, or IS220PIOAH1A modules.

• For applications with mixed signal types (analog, discrete, temperature), consider the IS230TBTCH1B.

• Verify the number of analog inputs and outputs matches the I/O module capacity (8 inputs, 4 outputs for IS220PAICH1B).

• Ensure proper channel configuration: jumper settings must match the module configuration (voltage or current).

Critical Precautions

1. Jumper Configuration – Configure each channel on the IS230TNCIH4C for the correct signal type (voltage or current) using jumpers before connecting field wiring. Incorrect configuration can damage the module or produce erroneous readings.

2. Termination Resistors – For 4–20 mA current inputs, install the required termination resistors (typically 250 Ω) on the IS230TNCIH4C. For voltage inputs, remove or bypass termination resistors.

3. Loop Power – The IS230TNCIH4C does not provide loop power for 4–20 mA transmitters. Ensure external power supplies are provided for loop‑powered devices.

4. Shielding – Use shielded twisted‑pair cables for all analog connections to the IS230TNCIH4C. Terminate shields at the field device end, not at the board, to prevent ground loops.

5. Polarity – For DC signals, observe proper polarity on the IS230TNCIH4C to prevent incorrect readings and potential damage.

6. Wiring – Use appropriate wire gauge (AWG 24–14). Recommended torque: 0.5–0.6 N·m. Over‑tightening may damage terminals; under‑tightening may cause intermittent connections.

7. Grounding – Ensure all field devices and the Mark VIe chassis share a common reference ground to prevent ground loops.

8. ESD Handling – Use grounded wrist straps when handling the IS230TNCIH4C to prevent static damage.

9. Obsolescence – The IS230TNCIH4C is in active production with long‑term support. It is the recommended choice for new analog installations. Keep spare boards for critical analog applications.