IS410JPDGH1A - DC Power Distribution Card

SPECIFICATIONS

Part Number: IS410JPDGH1A
Manufacturer: General Electric
Series: Mark VIe
Product Type: DC Power Distribution Card
Temperature: -30 to 65oC
Board Size: 16.51 cm High x 17.8 cm Wide
Mounting: DIN-rail
Country of Manufacturer: United States (USA)

Functional Description

IS410JPDGH1A is an DC Power Distribution Card designed and developed by GE. It is a part of Mark VIe control system. It serves as a hub for distributing various power supplies within the control system. It facilitates the distribution of three types of power- 28 V dc for control, and 48 V / 24 V dc for wetting power. Additionally, it includes circuitry for monitoring two channels of ac distribution To ensure proper grounding, the JPDG supports a floating dc wetting power bus, centered on earth through the use of resistors. Moreover, it offers voltage feedback via the PPDA to detect and address system ground faults.

Features

• In the context of 28 V dc distribution, the board is designed to accept power from two separate sources via external diodes. When integrated with the PPDA I/O pack, the card becomes a part of the PDM system, enhancing feedback capabilities. Furthermore, the JPDG can accommodate two ac signals for sensing and diagnostics, which extend beyond the board itself.
• For control power distribution, the JPDG board receives 28 V dc input from external ac/dc or dc/dc converters and efficiently distributes this power throughout the control system. It incorporates fuse protection for all 28 V dc outputs.
• Regarding wetting power distribution, the board is versatile, capable of operating at either 24 V dc or 48 V dc. It takes in dc power from two power supplies through external diodes and distributes it to terminal boards and other system loads. The board does not provide power to bulk 500 W - 24 V input / 28 V output power supplies, which are dedicated to I/O pack control power.

Compatibility

• The board has the capability to accommodate a Power Distribution System Feedback (PPDA) I/O pack, which is employed in the Mark VIe Control Power Distribution Modules.
• It can capture diagnostic feedback signals from as many as three additional distribution boards and direct these signals to the PPDA I/O pack. Since the PPDA I/O pack is physically integrated into the module, there is no requirement to transmit diagnostic signals from the JPDG to other power distribution boards.

Installation

• The Power Distribution Module is vertically mounted at the base of a metal bracket inside a cabinet. Located on the underside of the board is a 50-pin diagnostic connector labeled P2. To secure the module in place, four screws are used, attaching it through the mounting holes positioned both at the top and bottom of the module base. The precise placement within the control cabinet is not crucial, but typically, distribution boards are situated lower in the cabinet for grounding convenience.
• The PPDA I/O pack is plugged into connector JA1 and firmly affixed to the PDM base using an angle bracket. It is secured in place with nuts threaded onto studs that are permanently attached to the base for this purpose. Diagnostic feedback inputs from other distribution boards are directed to the JPDG through a 50-pin ribbon cable connected to connector P2.
• For input power connections, the Power Distribution Card accommodates either one or two 28 V dc control power inputs through connectors JR and JS, all linked to a common 28 V dc bus. Additionally, it can handle either one or two 24 V dc wetting power inputs or one or two 48 V dc inputs through connectors JPS1 and JPS2, all tied to a common 24/48 V dc wetting voltage bus.

Ground Fault Detection

• The board employs a wetting voltage dc bus that is precisely centered on ground potential through the use of a high resistance component. This setup enables the detection of ground faults, which occur when the voltage of either the positive or negative bus reaches ground potential.
• To facilitate this configuration, the module incorporates distinct voltage feedback sensing mechanisms for both positive and negative power in relation to ground. When feedback is supplied by a PPDA I/O pack, the control system can identify and respond to ground faults.
• The sensitivity of ground fault detection and the flow of ground fault currents are determined by the resistance chosen for centering the dc bus on ground. Centering resistors are selected using the jumper JP1. If the centering resistance is provided elsewhere in the system, this jumper should remain open.
• The PDM is designed to introduce minimal centering resistance into the system. In cases where the JPDG is responsible for the centering function, JP1 should be closed. If both a JPDE and a JPDG are used for the distribution of the same wetting power, only one of the two should have the JP1 jumper closed.

World of Controls has the most comprehensive collection of GE Mark VIe components. Please contact WOC as soon as possible if you require any extra information.

Frequently Asked Questions

What is IS410JPDGH1A?
It is a DC Power Distribution Card designed and developed by GE.

How does the feedback wiring on the JPDG differ from other PDM core boards?
The feedback wiring on the JPDG is unique in terms of connector configuration and signal handling. JPDG uses the JA1 connector for the PPDA I/O pack and does not have a P1 connector. Feedback signals from other core PDM boards are received through the P2 connector.

How is the board grounded?
In most cases, the board is grounded through the sheet metal bracket to the underlying back base, which typically constitutes FE grounding.

Why is FE ground used, and what role does it play in the system?
The FE ground serves as a local reference point when creating the feedback signals appearing on P2. It helps maintain a consistent reference for various signals within the control system.

Does using functional earth as a ground reference affect the accuracy of ac voltage detection on JAC1?
No, the use of functional earth as a ground reference does not impact the accuracy of ac voltage detection on JAC1. The system is designed to ensure accurate voltage detection regardless of the grounding method used.