Technical Specifications
Power Supply

Power Input: 24 V DC

Used exclusively for relay coil power

No onboard solenoid power supply

I/O Configuration

Standard Configuration:

12 channels of C-type dry contact relay outputs

H1A version with high-power relay contacts

Expandable Configuration:

Up to 24 relay output channels when two DRLY boards are installed in parallel

Connectors

Terminal Type:

Double-sided Euro-style screw terminals

Terminal Count:

36 screw terminals per side

Communication Interface:

Processor board communication cable

Environmental Conditions

Operating Temperature: −40 °C to +70 °C

Storage Temperature: −40 °C to +85 °C

Humidity: 5% to 95% RH (non-condensing)

Mechanical Characteristics

Dimensions (W × H × D):
Approx. 159 mm × 178 mm × 50 mm

Mounting Method: Surface-mounted

Weight: Approx. 1.2 kg

Core Features
Signal Isolation and System Safety

Integrated relay isolation circuitry provides effective suppression of electromagnetic interference (EMI), protecting processor boards and field devices and ensuring safe operation in harsh industrial environments.

High-Power Relay Output

The H1A relay version supports higher contact power, making it suitable for driving high-load actuators and critical control circuits in turbine and industrial automation systems.

Flexible Expansion Capability

Supports parallel installation of two DRLY boards, allowing expansion from 12 to 24 dry contact outputs, ideal for large-scale or evolving I/O configurations.

Fast Fault Diagnosis

Each relay channel includes an LED status indicator, enabling rapid fault identification, simplified troubleshooting, and reduced system downtime.

Seamless System Integration

Fully compatible with VCRC, VCC, and VTUR processor boards, supporting coordinated operation with GE Mark VIe controllers and turbine control logic.

Typical Applications

Dry contact output control for gas and steam turbine systems

High-power actuator switching and interlock circuits

Expansion of relay outputs in Mark VI / Mark VIe control cabinets

Industrial control systems requiring isolated, high-reliability relay outputs