GE DS200RTBAG2AHC Relay Terminal Board

The GE DS200RTBAG2AHC, also cataloged as the DS200RTBA Relay Terminal Board, operates as a dedicated hardware component for LAN and remote I/O terminal control within Mark V Speedtronic turbine control platforms.

Suffix Breakdown & Model Matrix

The alphanumeric designations within the DS200RTBAG2AHC functional product number correspond to specific hardware group properties and backward-compatible revisions:

Hardware Specifications

I/O Density Scaling & Diagnostic Indicators

Operating within the Mark V Speedtronic system architecture, this board acts as an interface layer between low-voltage digital microprocessor commands and heavy-duty field control circuits.

• I/O Density Scaling: The board provides ten dedicated relay execution spots on its surface within a compact terminal footprint. This layout integrates seven double-pole double-throw (DPDT) switches alongside three four-pole double-throw (4PDT) switches, maximizing switching density per slot.
• Active Signal Isolation: High-integrity isolation barriers protect upstream control electronics from power surges originating on field cabling. Individual 130 V AC MOVs suppress voltage spikes across contact boundaries, and these are field-replaceable.
• Visual Fault Isolation: Ten physical diagnostic status lamps are mounted inline near their respective relay components. Each lamp glows when its corresponding relay coil is actively energized, permitting visual loop status checks inside the cabinet.
• Hardware Configuration: Multiple berg-type jumper pins are integrated across the board, enabling technicians to customize circuit pathways, feedback signaling, and electrical configurations directly.

Frequently Asked Questions

Q: Can the DS200RTBAG2AHC board operate with 110 VDC or 115 VAC coil control voltages?

A: No. The Group 2 designation (RTBAG2) specifically configures the board with 24 VDC rated relay coils. For 110 VDC applications, look to the RTBAG1 version; for 115 VAC, utilize the RTBAG3 variant.

Q: How is physical backwards-compatibility maintained across different revisions of this board?

A: The functional A and H revisions and the artwork revision C maintain complete mechanical footprint and electrical signal path compatibility with the original unrevised DS200RTBAG2 parent board, allowing direct slide-in replacement.

Q: Are the overvoltage protection components on this board replaceable?

A: Yes. Each of the ten relays is paired with an individual, user-replaceable 130 V AC metal oxide varistor (MOV) to facilitate rapid onsite repair after a transient overvoltage fault.

Field Installation Guidelines

• Mounting Prep: Mount the board inside the cabinet using the four factory-drilled corner holes. Ensure non-conductive nylon or metal standoffs are securely fastened to prevent the PCB back-plane copper traces from contacting grounded metal panels.
• Electrical Hazard Mitigation: Isolate all external field power and terminal block voltages before plugging in the 16-pin system ribbon cable or the 2-pin board-to-board connector.
• Conduit and Wiring Isolation: Route the high-voltage relay contact lines in separate physical wire bundles away from low-voltage communication and digital ribbon cables to prevent electromagnetic coupling.
• Grounding Continuity: Connect overall cable shields to the dedicated cabinet ground bar using a low-impedance connection. Ensure all ground leads are as short as possible to effectively bypass high-frequency switching transients.