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GE IS200STCIH6ADD Simplex Contact Input Terminal Board

Configured for discrete contact signal acquisition in GE Mark VI and Mark VIe Turbine Control Systems, the GE IS200STCIH6ADD (IS200STCI Simplex Contact Input Terminal Board) provides direct physical signal interfacing between field switches, relays, and controller I/O assemblies.

Hardware Specifications

Parameter	Specification
Model	IS200STCIH6ADD
Brand	GE Industrial Systems
Origin	USA
Weight	2 lbs
Operating Temp	-40 to +85 deg C
Power Consumption	External excitation source, current limited to 0.5 A
Product Type	Terminal Boards
Series	Mark VI / Mark VIe Turbine Control System
Functional Description	Simplex Contact Input Terminal Board
Input Channels	24 dry contact inputs
Excitation Voltage	24 VDC (18.5-32 V), 48 VDC (32-64 V), 125 VDC (100-145 V)
Threshold Voltage	Approx. 50% of excitation voltage
Input Current	2.5 mA for first 21 circuits; 10 mA for last 3 circuits
Isolation	2.5 kV RMS channel-to-ground
Hardware Filtering	4 ms signal stabilization delay
Noise Suppression	Surge suppression and high-frequency filtering
Connector Interface	37-pin D-type connector and 3-position plug
Wiring Interface	52 terminals via right-angle header
PCB Treatment	H6ADD conformal coating
Compatible I/O Pack	PAIC I/O pack

Deterministic I/O Processing and Industrial Control Interface

The IS200STCIH6ADD provides discrete field input conditioning for GE Mark VI and Mark VIe control architectures. The terminal board receives dry contact signals from switches and relays, applies excitation voltage, filters input transitions, and transfers conditioned status information to the connected PAIC I/O pack.

GE industrial control platforms require deterministic I/O communication and controlled signal timing between terminal boards and controller assemblies. The STCIH6ADD supports I/O density scaling through 24 contact input channels and maintains defined electrical characteristics for multi-voltage field devices.

The module uses hardware filtering and surge suppression circuits to reduce transient interference on contact input paths. The conformal-coated PCB structure supports firmware-compatible GE control configurations while protecting circuit assemblies from industrial cabinet contaminants.

Frequently Asked Questions

Q: What excitation voltages are supported by the IS200STCIH6ADD?
A: The terminal board supports configurable 24 VDC, 48 VDC, and 125 VDC excitation levels for connected dry contact devices.

Q: Does the IS200STCIH6ADD support redundant I/O configurations?
A: No. The STCIH6ADD is a simplex contact input terminal board and does not support redundant operation.

Q: What signal conditioning functions are included on the board?
A: The board provides surge suppression, high-frequency filtering, and a 4 ms hardware input stabilization delay.

Field Installation Guidelines

Install the IS200STCIH6ADD using the specified plastic insulator carrier on a DIN rail or cabinet mounting surface. Confirm mechanical positioning and connector alignment before applying external excitation power.

Route contact signal wiring separately from high-current conductors to minimize electromagnetic interference. Terminate cable shields according to cabinet grounding practices and avoid unintended ground loops.

Verify excitation voltage selection, field terminal assignments, and PAIC I/O pack connections before system startup. Check input response and excitation status through the applicable GE diagnostic tools during commissioning.

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