I/O modules

Engineered for Mark V Speedtronic Load Switching

This board provides reliable relay switching for external field loads. It controls actuators and contactors for the GE DS200TCRAG1A DS200TCRAG1ACC module. You will find this unit exclusively in the Mark V turbine control series. Unlike standard output boards, this version uses the “ACC” functional revision. It supports up to 16 independent relay channels for heavy-duty applications.

Technical Specifications & Physical Dimensions

We designed this relay board for robust load management. The table below presents all verified technical specifications.

Functional Architecture and Channel Layout

This relay board connects directly to the Mark V backplane. It uses 16 form-C relays for flexible wiring options. You can wire each channel as normally open or normally closed. Moreover, the module includes 16 flyback suppression diodes. These components protect the drive from inductive voltage spikes. Consequently, the board switches solenoids and motors without damaging electronics.

Installation and Operational Guidelines

The GE DS200TCRAG1A DS200TCRAG1ACC operates with 24V DC coil voltage. It switches each relay in under 10 milliseconds. You must verify the load current before connecting any device. Always install external fuses for circuits above 5 Amps. This practice prevents contact welding during overload conditions. Furthermore, the board supports both AC and DC load types. This feature matches various field equipment requirements.

Physical Characteristics and Environmental Limits

This relay board has a rugged, high-creepage PCB construction. Its substantial 0.42 kg weight reflects the industrial relay quality. The layout follows GE’s standard Mark V clearance specifications. Therefore, it mounts securely inside C-frame or G-frame cabinets. The board includes mechanical flag indicators for each relay state. In addition, it maintains stable operation between -25°C and 60°C ambient temperature. You can store this unit safely up to 85°C.

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