IS230TNEAH3A - Emergency Trip DIN Rail Module

SPECIFICATIONS:

Part Number: IS230TNEAH3A
Manufacturer: General Electric
Series: Mark VIe
Product Type: Emergency Trip DIN Rail Module
Number of channels: 12
Common Mode Voltage Range: +5 V dc
Maximum Lead Resistance: 15 Ohm
Analog output current: 0-20 mA
Input Type: Discrete contact
Input Voltage: 24 VDC
Output Voltage: 24 VDC
Operating temperature: �20 Deg C to +70 Deg C
Size: 8.26 cm high x 4.18 cm
Mounting: 35 mm DIN Rail
Frequency: 50 or 60 Hz
Repair: 3-7 Days
Availability: In Stock
Weight: 2 lbs
Country of Origin: United States

FUNCTIONAL DESCRIPTION:

IS230TNEAH3A is an Emergency Trip DIN Rail Module manufactured and designed by General Electric as part of the Mark VIe Series used in GE Distributed Turbine Control Systems. It provides discrete input signal acquisition from protective devices, including overspeed switches, vibration sensors, high-temperature interlocks, fire and gas detection systems, and manual trip buttons. Each input channel incorporates optical isolation, Schmitt-trigger logic, and transient suppression to prevent false triggering due to voltage spikes, electromagnetic interference (EMI), or contact bounce. The module supports both normally open (NO) and normally closed (NC) inputs, configurable via onboard termination and jumper settings, and converts these inputs to TTL/logic-level signals for the Mark VIe trip logic processor.

The module drives high-speed output circuits connected to turbine trip solenoids or relay drivers. Outputs are designed with fail-safe characteristics: de-energized or energized states are maintained under power loss according to system configuration. It supports redundant channel architectures for SIL-compliant emergency shutdown, with hardware and software diagnostics monitoring input signal continuity, output driver integrity, supply voltage levels, and internal logic fault states. Deterministic propagation delay is minimized to ensure trip actuation within the response times required by turbine protection specifications. The module operates within industrial temperature and EMI specifications and can be installed in standard 35 mm DIN rail control panels with modular expansion.

OPERATION:

The Board continuously monitors all discrete input channels for state changes corresponding to turbine protective devices. Input signals from overspeed switches, vibration sensors, fire/gas detectors, or manual trip contacts are first passed through optical isolation and filtering circuits to remove transients, EMI, and contact bounce. The conditioned signals are then converted to logic-level outputs compatible with the Mark VIe trip logic processor. Each channel�s logic status is continuously compared against redundancy voting requirements when multiple modules are configured in parallel.

Upon detection of a valid trip condition, the module asserts its output circuits to drive trip solenoids or relay drivers. The outputs transition within defined deterministic time intervals to ensure immediate turbine shutdown. Fail-safe behavior is maintained for power loss, output driver faults, or internal logic errors; any failure is reported to the control system via status flags and diagnostics. The module also performs continuous self-diagnostics on input continuity, output driver health, internal supply voltages, and logic integrity, ensuring that a valid trip command is always executed without delay.

COMPATIBILITY:

It accepts discrete inputs from overspeed switches, vibration sensors, fire and gas detectors, and manual trip contacts, supporting both normally open and normally closed configurations. The module drives outputs to turbine trip solenoids, relay drivers, and auxiliary trip relays, and supports redundant channel architectures for SIL-rated fail-safe operation. It is designed for mounting on standard 35 mm DIN rails within Mark VIe control panels and operates reliably under the industrial voltage, temperature, and EMI/EMC specifications defined for turbine protection systems.

World of Controls maintains one of the largest inventories of replacement parts for GE Distributed Turbine Control Systems, ensuring that our customers have immediate access to the components they need for maintenance, upgrades, or emergency replacements. In addition to supplying new and unused parts, we specialize in the repair of faulty boards, providing fully tested and rebuilt modules backed by a comprehensive warranty for reliability and peace of mind.

Our team of experienced engineers and technicians is available 24/7 to support OEM needs and provide technical guidance on parts selection, installation, and troubleshooting. Whether you require a single replacement module, a complete system refurbishment, or urgent repair services, WOC delivers fast, dependable solutions tailored to your operational requirements. For pricing, availability, or technical assistance, our experts are ready to assist via phone or email, ensuring minimal downtime and seamless system performance.

FREQUENTLY ASKED QUESTIONS:

What type of input signals does the module accept?

The module accepts discrete contact inputs from protective devices, supporting both normally open NO and normally closed NC configurations. Each input channel is optically isolated and includes debounce and noise-filtering circuitry. This ensures accurate signal detection under industrial EMI and transient conditions.

What is the input voltage and current specification?

Discrete inputs operate within a 12-30 VDC nominal range, drawing 10 mA per channel. Input circuitry is designed to withstand voltage spikes and provides electrical isolation to protect the control logic. This maintains signal integrity and deterministic operation under all conditions.

How fast does the module respond to a trip condition?

The module provides a deterministic output response 10 ms from valid input detection to actuation of trip relays or solenoids. This fast transition ensures immediate turbine shutdown. Propagation delay is controlled to meet Mark VIe turbine safety specifications.