IS230SCISH1A - Simplex Contact Input Assembly Module

TECHNICAL SPECIFICATIONS:

Part Number: IS230SCISH1A
Manufacturer: General Electric (GE)
Control System Series: Mark VIe / Mark VIeS Distributed Control System
Functional Acronym: SCIS
Product Type: Simplex Contact Input Assembly Module
Number of Channels: 12 Fully Supervised Input Channels
Circuit Compatibility Layout: Class A and Class B Wiring Frameworks
Contact Input Sensing Type: Optically Isolated Dry-Contact Inputs
Common Mode Voltage Range: $pm5text{ V DC}$
Maximum Lead Resistance: 15 Ohms
Contact Resistance Threshold: 0.01 Ohms
Insulation Resistance Rating: 100 Megohms Minimum
Assembly Group Classification: Group 1 Architecture (Base Assembly Type)
Mounting Configuration: DIN Rail Surface Mount Style / Panel Backbox Installation
Environmental Coating: Industrial Conformal Coating Protection
Repair Time: 3-5 Days
Availability: In Stock
Country of Origin: United States

FUNCTION DESCRIPTION OF IS230SCISH1A:

The IS230SCISH1A is a compact Simplex Contact Input Assembly Module (SCIS) developed exclusively by General Electric for modern Mark VIe and Mark VIeS safety and distribution control frameworks. Operating within the decentralized I/O layer, this module functions as an addressable, intelligent hardware landing spot designed to monitor structural dry-contact components. It tracks field-side mechanisms, including manual pushbuttons, limit switches, proximity sensors, and isolated safety relay contacts, without introducing line noise to the master processors.

PROGRAMMABLE ADDRESSING AND INTERFACE LAYER:

The IS230SCISH1A acts as a self-contained, addressable smart module. It handles continuous field polling sequences via a built-in internal logic chip. The card features an onboard programming port that interfaces directly with frontline setup tools (such as the MX/801AP or 850EMT). This tool layout allows operators to assign a distinct device address to the card on the control loop. Once addressed, the board interprets external loop variables and maps status data directly over to the master control panel via system communication frames.

CLASS A & CLASS B CIRCUIT WIRING SUPERVISION:

The internal circuit trace path is engineered to oversee up to 12 distinct dry-contact input lines across both Class A and Class B configurations. This diagnostic monitoring infrastructure supervises the copper lines for ongoing wiring faults. It checks for underlying open-circuit states, short circuits, and localized ground-loop leakage conditions. If a hardware deviation happens, the integrated logic suppresses the standard run parameters and instantly logs a line-fault error back to the main engineering workstation.

ISOLATED MONITORING MATRIX & PANEL DIAGNOSTICS

The incoming contact lines pass directly through optical-isolation fields, which shield the internal memory lanes from common-mode voltage fluctuations up to the full threshold of the board's design. The compact faceplate structure includes physical mounting accommodations for standard enclosure fits, alongside a high-visibility diagnostic LED indicator. During standard system poll intervals, the LED pulses to confirm steady network data traffic. When an input contact changes state or slips into an alarm threshold, the LED switches to a solid, locked-on illumination profile.

WHY PARTNER WITH WORLD OF CONTROLS

World of Controls delivers complete product lifecycle protection for heavy industrial plants and utility facilities relying on GE Mark VIe and Mark VIeS platforms. Every certified IS230SCISH1A simplex contact module undergoes comprehensive multi-point operational testing inside live simulation enclosures. We evaluate open, short, and ground-fault diagnostic reporting across all 12 contact channels, verify addressing stability via the programming loop, inspect data packet delivery over the system bus, and measure component drift under thermal loads. WOC carries these assemblies in both UNUSED and REBUILT profiles.

FREQUENTLY ASKED QUESTIONS

What is the GE IS230SCISH1A?

It is an addressable Simplex Contact Input Assembly Module manufactured by General Electric for Mark VIe and Mark VIeS control networks. It acts as an isolated terminal device engineered to monitor 12 distinct field dry-contact sensors like switches, pushbuttons, and safety relays.

What specific wiring fault conditions can the module detect on field loops?

The module continuously monitors loop integrity. It can discover and report three main types of field faults: open circuits, short circuits, and ground faults, transmitting them as trouble flags to the central panel.

How do technicians program or assign a network loop address to this card?

The card features an integrated internal programming port located near the faceplate. Field engineers can set the card's address using a frontline programming tool (such as the 850EMT setup handset) before locking the device into the active system loop.

Can this module be split to run redundant processing lines simultaneously?

The module belongs to the Simplex architecture series, meaning it functions with a single processing interface on a single loop. For fully triplicated or triple modular redundant (TMR) safety setups, a specialized TMR-designated contact module series must be used.

What do the different visual states of the front-panel LED indicator mean?

During standard operation, the LED flashes systematically to indicate active communication polling from the main control processor. If an external dry contact changes state or triggers an active alarm event, the LED stops flashing and remains steadily lit.

How does World of Controls verify an IS230SCISH1A module before delivery?

Every board is positioned into an active Mark VIe testing chassis where we load functional loop profiles. We simulate line drops and shorts across all 12 channels to check the card's supervisory logic, test the addressing registers, and thermal-cycle the components to ensure steady long-term operation.