GE IS400STCIS2AFF Input Terminal Board in stock

GE IS400STCIS2AFF is a conformal coated STCI contact input terminal board for GE Speedtronic Mark VIe turbine control system. It is the field wiring termination unit for 24-channel dry contact discrete signals, receiving external 24V/48V/125VDC excitation from limit switches, pressure switches and relay contacts, and transmitting status signals back to the matching PDIA I/O pack.

This board adopts simplex architecture, equipped with barrier terminal blocks and built-in surge suppression circuit. The FF suffix represents conformal coating treatment for anti-moisture and anti-corrosion, widely used in gas turbine, steam turbine and auxiliary equipment discrete status acquisition loops, and is a common spare part for power plant Mark VIe cabinet maintenance.

Data Parameters

• 1. Brand: GE (General Electric, Speedtronic)

• 2. Model: IS400STCIS2AFF

• 3. Product Type: Simplex Contact Input Terminal Board (STCI)

• 4. Application: Mark VIe gas / steam turbine discrete contact signal acquisition

• 5. Feature: 24 dry contact input channels, surge protection, conformal coating, channel diagnosis

• 6. Characteristic: Euro-block barrier terminal, D-sub connector, simplex non-redundant

• 7. Excitation Voltage: 24VDC / 48VDC / 125VDC external excitation

• 8. Matching Pack: PDIA discrete input I/O processor pack

• 9. Mounting: Plug-in installation inside Mark VIe I/O rack

• 10. Operating Temperature: -20℃ ~ +70℃

Core Functions

• 1. Collect on/off status signals from dry contact switches and auxiliary relays on site.

• 2. Provide transient surge suppression and noise filtering to protect the downstream I/O pack.

• 3. Detect open circuit and abnormal excitation status for each contact input channel.

• 4. Transfer contact state signals to PDIA pack for digital sampling and logic judgment.

• 5. Upload board ID and channel fault alarms to Mark VIe controller and ToolboxST.

Application Scenarios

• 1. Combined cycle power plant gas turbine BMS burner management cabinet.

• 2. Steam turbine valve limit switch and auxiliary equipment status monitoring rack.

• 3. GE Mark VIe turbine control system overhaul and spare replacement.

• 4. Compressor anti-surge switch, interlock and protection signal acquisition unit.

• 5. Coastal and humid power plant, conformal coated version for harsh environment.

FAQ

• 1. Q: What is GE IS400STCIS2AFF?
      A: It is a 24-channel simplex dry contact input terminal board with conformal coating for Mark VIe STCI series.

• 2. Q: What is the difference between IS400STCIS2AFF and IS410STCIS2A?
      A: Same circuit and pinout; IS400STCIS2AFF is coated version for corrosive environment, IS410STCIS2A is standard uncoated version.

• 3. Q: Can it be used for active 4-20mA analog signals?
      A: No, it is designed for dry contact discrete input; analog signal uses STAIS terminal board.

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