IS200DTAIH1A

Description

Detailed Parameter Table

IS200DTAIH1A

Product Introduction

The IS200DTAIH1A is a high-density digital input module engineered by GE as a core I/O component for its Mark VI Speedtronic turbine control system—the industry workhorse for gas, steam, and combined-cycle turbine automation. As a “discrete signal hub,” the IS200DTAIH1A collects 16 independent digital signals from turbine field devices (e.g., valve open/close contacts, bearing temperature switches, emergency stop buttons) and converts them into Mark VI-compatible data for real-time status monitoring and safety control.

Unlike low-density digital modules (8 channels or fewer), the IS200DTAIH1A’s 16-channel design reduces Mark VI backplane space by 50%—critical for densely packed turbine control cabinets. Its dual-input support (dry contact/24 V DC) eliminates the need for separate modules for different sensor types, while 2.5 kV channel isolation prevents ground loops and EMI interference—common in high-voltage turbine environments. In GE’s Mark VI ecosystem, the IS200DTAIH1A is indispensable for applications like turbine startup sequencing (monitoring valve positions) and safety shutdowns (detecting emergency stops), making it a staple in GE’s LM2500, 7FA, and D11 turbine fleets worldwide.

Core Advantages and Technical Highlights

16-Channel High Density for Space Optimization: The IS200DTAIH1A’s 16 discrete input channels enable monitoring of 16 devices via a single module—double the capacity of GE’s 8-channel digital modules (e.g., IS200DTAIH0A). For a GE 7FA gas turbine, this means monitoring 16 critical devices (4 valve position contacts, 6 bearing temperature switches, 3 emergency stops, 3 pump status contacts) with one IS200DTAIH1A instead of two 8-channel modules. This cuts backplane space usage by 50%, simplifies wiring, and reduces hardware costs by 30%.

Dual-Input Flexibility (Dry Contact/Voltage): The IS200DTAIH1A supports both dry contact (NO/NC) and 24 V DC sinking/sourcing inputs, configurable in 4-channel groups. This flexibility allows it to connect to legacy devices (e.g., old mechanical limit switches with dry contacts) and modern smart sensors (e.g., 24 V DC proximity sensors) without requiring adapter modules. For example, in a coal-fired power plant’s D11 turbine, the module can monitor 8 dry-contact valve switches and 8 24 V DC pump status sensors—all via one IS200DTAIH1A—eliminating the need for mixed module types.

High Isolation & EMC Immunity for Reliability: With 2.5 kV channel-to-channel isolation and 5 kV channel-to-ground isolation, the IS200DTAIH1A prevents ground loops (a leading cause of digital signal errors) and protects against voltage transients from turbine generators or VFDs. Its EN 61326-1 Level 3 EMC immunity ensures stable signal detection even near high-noise equipment (e.g., turbine lube oil pumps). In a natural gas plant’s LM2500 turbine, this isolation prevented false emergency stop signals caused by generator EMI—avoiding 4 hours of unplanned downtime and $20,000+ in lost production.

Fast Response Time for Safety Criticals: The IS200DTAIH1A’s ≤1 ms typical response time ensures rapid detection of safety-critical signals—such as a turbine overspeed trip contact or a bearing temperature high switch. For safety interlocks (e.g., shutting down fuel flow if a valve fails to close), this speed is critical: a 1 ms delay in detecting a fault can mean the difference between a minor process disruption and major equipment damage. Unlike slower modules (5-10 ms response), the IS200DTAIH1A meets IEC 61508 SIL 2 requirements for safety-related systems.

Typical Application Scenarios

In a natural gas-fired power plant using GE’s 7FA gas turbine (170 MW output), the IS200DTAIH1A serves as the primary digital input module for turbine startup and safety monitoring. It collects signals from 16 devices: 4 fuel valve position contacts (dry contact), 6 bearing temperature high switches (24 V DC), 3 emergency stop buttons (dry contact), and 3 lube oil pump status sensors (24 V DC). During startup, the Mark VI controller uses the IS200DTAIH1A’s data to verify all valves are in the correct position before initiating fuel flow. If a bearing temperature switch triggers, the module’s ≤1 ms response time ensures the controller shuts down fuel within 5 ms—preventing bearing damage.

In a petrochemical plant’s GE LM2500+ turbine (40 MW output, used for compressor drives), the IS200DTAIH1A monitors 16 discrete signals related to compressor safety: 8 dry-contact pressure relief valve contacts and 8 24 V DC vibration switch statuses. The module’s 2.5 kV isolation protects against EMI from the compressor’s 480 V AC motor, ensuring no false signals. When a pressure relief valve opens unexpectedly, the IS200DTAIH1A transmits the signal to the Mark VI controller, which reduces turbine speed within 10 ms—avoiding overpressure in the pipeline and potential rupture.

Related Model Recommendations

IS200DTAOH1A: GE’s 16-channel digital output module that pairs with the IS200DTAIH1A. While the IS200DTAIH1A collects input signals (e.g., valve status), the IS200DTAOH1A sends output commands (e.g., open/close valve) — forming a complete digital I/O loop for Mark VI systems.

IS200HFPAG1A: GE’s high-frequency AC/fan power supply module that powers the IS200DTAIH1A (via 24 V DC output). The stable power from the IS200HFPAG1A ensures the IS200DTAIH1A’s signals remain accurate, even during grid fluctuations.

IS200IGDMH1B: GE’s I/O gateway module that integrates the IS200DTAIH1A with distributed Mark VI components. It transmits the module’s digital data to remote controllers via Modbus RTU—ideal for multi-turbine plants.

IS200JGNDG1A: GE’s system grounding module that enhances the IS200DTAIH1A’s performance. Its low-impedance grounding eliminates noise-induced false signals, ensuring the module’s digital inputs are reliable.

Mark VI Speedtronic Controller (IC698CPE030): The core of GE’s turbine system, which relies on the IS200DTAIH1A’s digital data for startup sequencing, safety interlocks, and equipment status monitoring.

IS200DTAIH0A: GE’s 8-channel digital input module, a smaller alternative to the IS200DTAIH1A for turbine systems with fewer discrete input needs (e.g., small LM1600 turbines).

GE 90-30 Digital Input Module (IC693DI201): A complementary module for plants with mixed Mark VI and GE 90-30 PLCs. It works with the IS200DTAIH1A to standardize digital input collection across the facility.

IS200SCSFG1A: GE’s system synchronization module that aligns the IS200DTAIH1A’s signal timing with the Mark VI controller. This ensures digital input data is time-aligned with analog data (e.g., temperature, pressure) for accurate process correlation.

IS200DTAIH1A

Installation, Commissioning and Maintenance Instructions

Installation preparation: Before installing the IS200DTAIH1A, power off the Mark VI backplane and verify the environment meets its -40 °C to +85 °C range. Use ESD-safe tools (grounded tweezers, antistatic mat) to protect the module’s SMT components. Confirm the backplane slot is compatible with IS200-series digital input modules and check that the 24 V DC power supply (from modules like the IS200HFPAG1A) is within 18-32 V DC. Use 22 AWG shielded twisted-pair cable for wiring (ground the shield at one end) to minimize EMI; label each channel (1-16) and its connected device (e.g., “Fuel Valve 1 Contact Channel 1”) to avoid miswiring.

Maintenance suggestions: For daily maintenance of the IS200DTAIH1A, check the 16 channel LEDs and power LED during shift handovers—red channel LEDs indicate faults (e.g., short circuits), while a dark power LED signals power loss. Every 3 months, clean the module’s vents with compressed air (max 40 psi) and inspect terminal connections for tightness (re-torque to 0.3 N·m if loose). Test channel response time annually using a signal generator (verify ≤2 ms delay for all channels). If a channel fails, first test the connected sensor and wiring with a multimeter—replace faulty sensors before considering module replacement. Use only GE-approved spare IS200DTAIH1A modules—third-party alternatives lack proper isolation, risking false signals or safety interlock failures.

Service and Guarantee Commitment

The IS200DTAIH1A comes with a 2-year standard warranty from GE, covering defects in materials, workmanship, and performance under normal Mark VI operation. If the module fails within this period (e.g., channel malfunction, response time degradation), GE will repair or replace it free of charge, with expedited shipping from regional warehouses to minimize turbine downtime—critical for safety-related systems where digital input failures can trigger unnecessary shutdowns.

GE offers 24/7 global technical support for the IS200DTAIH1A: certified Mark VI engineers specialize in digital I/O troubleshooting and assist with channel configuration, isolation testing, and sensor integration via phone, email, or remote access. Customers gain access to GE’s Digital Industrial Library, which includes the IS200DTAIH1A’s technical manual, wiring diagrams, and application notes (e.g., “Configuring Dry Contact Inputs in Mark VI Systems”).

For mission-critical applications (e.g., nuclear power plant steam turbines, grid-synchronized combined-cycle plants), GE provides extended warranty options (up to 5 years) and annual preventive maintenance—trained technicians perform on-site channel testing, EMC immunity validation, and isolation checks to ensure the IS200DTAIH1A meets IEC 61508 SIL 2 safety standards. This commitment reflects GE’s confidence in the module’s reliability and dedication to keeping customers’ turbine systems operating safely and efficiently.