This contact input terminal board is designed for the GE Mark VIe control system (IS200 series). It provides 24-channel discrete contact signal acquisition, conditioning, and conversion, serving as a reliable field interface for Mark VIe digital input I/O modules.

The board is typically used for equipment status monitoring, alarm inputs, and interlock signals in turbine and industrial control systems.

Core Functions

Acquisition of discrete contact (dry contact / voltage contact) signals

Signal conditioning and conversion for Mark VIe I/O modules

High-reliability status monitoring and interlock signal processing

Enhanced noise immunity for harsh industrial environments

Installation & Mechanical Specifications

Installation methods: DIN rail mounting or panel mounting
(with mounting bracket and insulation components)

Protection level: IP20 (installed inside control cabinet)

Terminal configuration:

2 sets of terminal blocks

Supports 24 discrete contact signal connections

Weight: approx. 0.3 kg

Key Technical Parameters

Input Configuration

24 discrete contact inputs

Total input channels: 24

Input Voltage Ranges

16–32 VDC

32–64 VDC

100–145 VDC
(Suitable for nominal excitation voltages of 24 VDC / 48 VDC / 125 VDC)

Input Current

Channels 1–21: 2.5 mA

Channels 22–24: 10 mA

Power Supply

External excitation power supply required

Compatible with Mark VIe system 24 V DC logic power supply

Response Performance

Response time: ≤ 10 ms

Isolation & Protection

Electrical isolation between channels

Optocoupler isolation with high-frequency filtering

Channel-level surge protection and noise suppression

Strong anti-interference capability

Environmental Conditions

Operating temperature: –30 to +65 °C

Relative humidity: 5% to 95%, non-condensing

Typical Applications

Turbine auxiliary system status monitoring

Industrial equipment interlocks and alarms

Breaker, relay, and limit switch status detection

Mark VIe DCS and turbine control systems