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GE DS200TCRAG1ACC Relay Output Board

The GE DS200TCRAG1ACC, also cataloged as the DS200TCRA Relay Output Board, operates as a dedicated hardware component for relay signal switching and field device control within GE Mark V Speedtronic turbine control systems. It provides isolated relay outputs for actuators, solenoids, alarms, and auxiliary equipment interfaces.

Hardware Specifications

Parameter	Specification
Model	DS200TCRAG1ACC
Brand	GE General Electric
Origin	United States
Weight	0.85 kg
Dimensions	259 x 191 x 30 mm
Operating Temp	-40 to +65 deg C
Power Consumption	Not specified
Product Type	Relay Output Board
Series	Mark V Speedtronic
Functional Acronym	TCRA
Relay Channels	16-30 relay outputs depending on revision
Relay Type	SPDT Form C mechanical relays
Contact Rating	5 A @ 250 VAC / 30 VDC
Isolation Protection	2.5-5 kV RMS
Relay Contacts	Gold-plated contacts
Contact Life	500,000+ operations
Response Time	<10 ms
Indicators	LED status indication per relay channel
Power Supply	24 V DC relay coil supply; backplane +5 VDC and +/-15 VDC
Connectors	4 x 34-pin connectors, 4 x 12-pin connectors, 34-pin terminal block
PCB Coating	Normal coating
Storage Temp	-40 to +85 deg C
Humidity Range	10-95% non-condensing
Compliance	UL, CSA, SIL2

GE Mark V Relay Output Switching Characteristics

The DS200TCRAG1ACC provides relay-based discrete output switching between Mark V control logic and external field circuits. The board uses isolated mechanical relay channels with gold-plated contacts to control external actuators, alarm circuits, and auxiliary equipment.

The relay output architecture supports industrial control applications requiring electrical separation between control electronics and field loads. Channel status LEDs provide local indication of relay activation states for maintenance diagnostics.

For GE Mark V system integration, the board operates through backplane communication and connector interfaces associated with Group 1 control assemblies. The DS200TCRAG1ACC supports firmware and hardware compatibility within defined Mark V module configurations.

Deterministic Relay Control and I/O Interface

The DS200TCRAG1ACC applies relay output switching logic within GE industrial control architectures. The isolated relay channels provide separation between low-level control signals and external electrical loads.

The board supports discrete I/O density scaling through multiple relay channels, allowing turbine control systems to manage multiple field devices from a single terminal board assembly. Connectorized field wiring supports structured cabinet installation and signal distribution.

Frequently Asked Questions

Q: What type of outputs are provided by the DS200TCRAG1ACC?
A: The board provides mechanical SPDT Form C relay outputs for switching external field devices such as actuators, solenoids, alarms, and auxiliary equipment.

Q: Does the DS200TCRAG1ACC provide electrical isolation between control and field circuits?
A: Yes. The relay output channels provide galvanic separation between Mark V control electronics and connected field circuits.

Q: What diagnostic functions are available on the relay output board?
A: Each relay channel includes an LED indicator for local relay status monitoring during operation and maintenance procedures.

Field Installation Guidelines

Install the DS200TCRAG1ACC within the designated GE Mark V control cabinet slot and verify connector orientation before insertion. Confirm all relay output wiring assignments against system drawings before energizing external field circuits.

Maintain separation between relay output wiring and sensitive analog signal cables to reduce electrical interference. Ground cable shields according to cabinet grounding practices where shielded field wiring is applied.

Before replacing the board, record existing connector positions and relay channel assignments. After installation, verify LED status indications and confirm correct field device activation through the Mark V control interface.

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