Description

GE DS200TCQCG1BJF Mark V Speedtronic RST Overflow Board

The GE DS200TCQCG1BJF, also cataloged as the DS200TCQC RST Overflow Board, operates as a dedicated hardware component for monitoring counter and timer overflow conditions within GE Mark V Speedtronic turbine control platforms.

Hardware Specifications

Parameter	Specification
Model	DS200TCQCG1BJF
Brand	GE
Origin	USA
Weight	0.6 kg
Dimensions	21 x 15 x 4 cm
Operating Temp	-10 deg C to +55 deg C
Power Consumption	24 VDC +/-10%, 150 mA
Input Channels	16 RST overflow signals
Input Voltage Range	0-24 VDC
Threshold Voltage	12 VDC +/-5% (programmable)
Response Time	< 1 ms
Fault Latching	Hardware latch (software reset required)
Status Indicators	16 discrete red LEDs
Host Interface	34-pin ribbon connector
Power Connector	4-pin terminal block

Backplane Communication & Deterministic Execution

Designed for the GE Mark V Speedtronic turbine architecture, the board interfaces directly with core processor cards via a 34-pin ribbon bus cable. It executes high-speed signal processing on 16 discrete counter channels with a response latched under 1 ms. The card ensures deterministic firmware flash compatibility across Mark V revision updates, preventing bus contention and maintaining real-time fault detection logic without overburdening host processor backplane communication velocity.

Frequently Asked Questions

Q: Can the DS200TCQCG1BJF board be replaced while the Mark V system is powered?

A: No. The board must be de-energized prior to removal or insertion. Hot-swapping risks damaging the 34-pin ribbon bus interface and causing inadvertent fault latching on adjacent system cards.

Q: How are latched overflow signals cleared after a fault condition is resolved?

A: The board hardware latches the overflow state upon crossing the 12 VDC threshold. Clearing the fault condition requires a software reset command issued from the host processor across the bus connection.

Q: What power inputs are required for board operation?

A: The board requires a regulated 24 VDC power supply connected via the 4-pin terminal block, consuming a nominal current of 150 mA.

Field Installation Guidelines

1. Ensure the Mark V control panel is fully de-energized and locked out before opening the rack enclosure.
2. Observe anti-static precautions. Wear a grounded wrist strap attached to the panel earth ground when handling the board.
3. Verify mechanical mounting alignment on the card cage standoffs using standard hardware to avoid board flexure.
4. Secure the 34-pin ribbon connector fully, ensuring side locking tabs are latched to prevent pin misalignment or intermittent connectivity.
5. Connect power supply wiring to the 4-pin terminal block, maintaining proper polarity (+24 VDC and GND).
6. Ensure shield grounding wires are terminated directly to the cabinet ground bus bar with short, low-impedance leads.

Specifications

• Brand: General Electric

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems