IS200STCIH4A | General Electric Mark VI DIN Rail Contact Input Card

GE IS200STCIH4A Mark VI DIN Rail Contact Input Card — 51-Terminal, 24-Channel

The IS200STCIH4A is a DIN Rail Contact Input Card for GE's Mark VI turbine control platform. It provides 24 discrete contact input channels with dedicated wetting power terminals, serving as the field wiring interface for PDIA discrete input I/O packs. The board features 51 screw terminals, a 37-pin D-sub connector, and over 80 passive and active components for robust signal conditioning in gas turbine control systems.

Key Specifications

• Manufacturer: General Electric / GE Energy
• Series: Mark VI Speedtronic
• Type: DIN Rail Contact Input Card
• Channels: 24 discrete contact inputs
• Terminals: 51 screw terminals (E1 and E2 terminal rings on either side)
• Connector: One 37-pin (female) D-type connector
• Plug: One 3-position female plug
• Mounting: DIN rail mount
• Components: Over 80 resistors, capacitors, diodes, and one integrated circuit
• Function: Monitors contact states and wiring integrity for turbine control
• Compatibility: IS220PDIAH1A/H1B discrete input I/O packs (Mark VIe)
• Status: Active / In production

Architecture & Compatibility

• I/O Pack Pairing: Connects to IS220PDIAH1A or IS220PDIAH1B discrete input I/O packs in Mark VIe systems
• Hazardous Location Approval: Class I, Division 2, Groups A,B,C,D; Class I, Zone 2, Group IIC; ATEX Zone 2, Group IIC (when paired with certified I/O packs)
• Contact Wetting: 24 contact wetting power terminals (TB1.1–TB1.48) for field device excitation
• Terminal Block: Two large terminal blocks with barrier-type silver metal terminals
• Related Models: IS200STCIH1A, IS200STCIH2A, IS200STCIH8A (different channel counts/configurations)

Installation Guide

1. Mount the IS200STCIH4A on a DIN rail in the Mark VI/Mark VIe I/O cabinet.
2. Connect 24 field contact inputs to the screw terminal blocks (E1 and E2 sides).
3. Connect contact wetting power to the designated terminals (typically 24–125 VDC depending on system configuration).
4. Connect the 37-pin D-sub cable to the PDIA I/O pack.
5. Connect the 3-position plug for additional control signals.
6. Verify all terminals are torqued to specification.
7. Power on and verify contact state monitoring via ToolboxST diagnostics.

FAQ

Q: Is IS200STCIH4A for Mark VI or Mark VIe?
A: Mark VI. The IS200 prefix indicates Mark VI series. However, it is also listed as an accessory for Mark VIe PDIA I/O packs (IS220PDIAH1A/H1B) in hazardous location certifications.

Q: What does the H4A suffix mean?
A: "H4" indicates the functional variant / terminal configuration (51 terminals, 24 channels). "A" is the primary revision level.

Q: How many contact inputs can it monitor?
A: 24 discrete contact inputs with individual wetting power terminals.

Q: What is the difference between STCIH4A and TBCIH4C?
A: STCIH4A is a DIN rail-mounted contact input card with screw terminals. TBCIH4C is a barrier-type terminal board with different mounting and connector configuration. Both are compatible with PDIA I/O packs.

Q: Does it require external power?
A: The card itself is powered from the I/O pack backplane. Contact wetting power for field devices must be supplied externally (24–125 VDC depending on configuration).

Selection Tips

• Mark VI/Mark VIe, 24-channel contact input, DIN rail: IS200STCIH4A
• Mark VIe, 24-channel contact input, barrier terminal board: IS200TBCIH4C or IS400TBCIH4C (RoHS)
• Mark VIe, coated version: IS201STCIH4A
• Always verify: I/O pack model (PDIAH1A/H1B), mounting type (DIN rail vs. panel), and hazardous location requirements
• Order compatible cables: 37-pin D-sub cable for PDIA I/O pack connection