The GE IS200JPDSG1A, also cataloged as the JPDS power distribution board, is a 28 VDC distribution module designed for the Mark VIe control system. It provides regulated power delivery to control racks and I/O packs, while integrating diagnostic feedback through the PPDA I/O pack.
Hardware Specifications
Parameter
Specification
Model
IS200JPDSG1A
Brand
General Electric (GE)
Origin
United States
Dimensions
16.51 cm × 17.8 cm
Weight
Not specified
Operating Temp
-30 to +65 °C
Input Voltage
28 VDC, max 25 A per bus
Ground Capacity
75 A
Mounting
DIN-rail or direct metal holder
Device Type
Power Distribution Board
Product Family
Mark VIe
Manual Reference
GEH-6721L
Diagnostic Ports
Dual 50-pin connectors (top and bottom)
Repair
3–7 days turnaround
Functional Description
Power Input: Three connectors (JR, JS, JT) accept 28 VDC from external converters. Each connector includes dual positive and triple negative terminals, plus health inputs for diagnostics.
Distribution: Six outputs (J1–J6) supply JPDP cards via 3×2 Mate-N-Lok connectors, supporting direct connection to JPDL boards for I/O pack power.
Auxiliary Outputs: JAR, JAS, JAT connectors provide auxiliary power with noise suppression (common-mode choke) and current limiting (PTC fuse).
Internal Bus Access: TB1 and TB2 screw terminals allow access to R, S, and T buses (35 A max each) and ground (75 A). Boards can be jumpered together for redundancy or duplex/TMR applications.
Diagnostics: A DC-62 connector links to the PPDA diagnostic I/O pack, enabling monitoring of JPDS and up to five additional boards.
Redundancy: Supports independent buses for R, S, and T controllers, or jumper configuration for consolidated single-bus operation. Includes diode-OR output for PPDA pack to ensure uninterrupted feedback.
Application Notes
Enables separate power supplies for R, S, and T controllers, isolating failures to a single channel.
Supports redundant bus configurations for high reliability in turbine control systems.
Compatible with battery backup systems, requiring external diodes for isolation.
Designed for Duplex and TMR architectures, ensuring robust power delivery across distributed control racks.
Installation Guidelines
Mount vertically on DIN rail or direct holder for stability.
Ensure grounding through sheet metal bracket to system FE (Functional Earth).
Position boards for clear visibility of PPDA pack indicators.
Route feedback cables (P1/P2) carefully to maintain diagnostic integrity.
Use shielded cabling and proper separation from high-voltage conductors.
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