IS420YDOAS1B GE Mark VIe, Discrete Output Module

Description:

 Introduction
The IS420YDOAS1B device was originally manufactured for General Electric's Mark VIe Turbine Control System Series. The Mark VIe Turbine Control System is designed for managing and controlling popular and GE-compatible wind, gas, and steam turbine automated drive assemblies. Notably, the IS420YDOAS1B is part of one of the last GE Mark series to utilize the company's signature Speedtronic control system technology. It's important to note that the IS420YDOAS1B is not the original device in its specific Mark VIe or VIeS Series functional role; instead, it is an updated version compared to the parent IS420YDOAS1 Discrete Output I/O Pack Module.

Hardware Tips and Specifications
The Discrete Output I/O Pack (IS420YDOAS1B) provides electrical interfaces between up to two Ethernet input-output networks and a discrete output terminal board. This pack can control up to twelve relays and accepts terminal board-specific feedback. All inputs to the I/O pack are sent through dual RJ45 Ethernet connectors and a three-pin power input. Outputs are connected via a DC37 pin connector directly to the associated terminal board connectors.

For visual diagnostics, LED indicators on the front of the pack provide status updates. Typically, twelve yellow LEDs indicate whether each output command is energizing the relay. BBPx processor LEDs indicate required diagnostics. An ATTN LED, which can be red or green and solid or flashing, also provides diagnostic information. For example, a green ATTN LED flashing at 2 Hz with 50% duty cycle or two 4 Hz pulses every four seconds indicates that the application is online and functioning correctly.

Several common diagnostic alarms may appear during operation, including alarms labeled two, three, and five. Each alarm has different causes and solutions. For instance, alarm five typically indicates the I/O pack is in remote I/O mode due to hardware failure or invalid module configuration. To resolve these issues, replace the I/O pack or module entirely or rebuild and reconfigure the system.

The IS420YDOAS1B employs a protective strategy involving a special base printed circuit board covered by an outer chassis to safeguard its interior circuitry.

Frequently Asked Questions:

1.What are the key functionalities of the IS420YDOAS1B Discrete Output I/O Pack in terms of its electrical interfaces and connectivity options?
Discrete Output I/O Pack IS420YDOAS1B can provide electrical interfaces between up to two Ethernet input-output networks as well as a discrete output terminal board.

2.What is the purpose of the twelve yellow LEDs on the IS420YDOAS1B I/O pack, and what do they indicate??
As mentioned above the IS420YDOAS1B I/O pack can provide diagnostic LEDs; typically the twelve LEDs will be yellow to provide an indication for each output that command is energizing the relay.

Datasheet Link:

IS420YDOAS1B GE Mark VIe, Discrete Output Modul PDF Datasheet