About the IS220YDOAS1A
This IS220YDOAS1A product from General Electric was originally manufactured to exist in their Mark VIe Turbine Control System Series as a Discrete Output Pack Module. This particular IS220YDOAS1A device, while definable as a Discrete Output Pack Module in its own right, is actually not considered the originally-developed device of this specific Mark VIe Series functionality; as that would have to be considered the IS220YDOAS1 parent Discrete Output Pack Module noticeably missing this IS220YDOAS1A device's singular A-rated primary product revision.
The Mark VIe Series that this IS220YDOAS1A device belongs to is a rather self-describing General Electric Mark product series, given the fact that it exists as one of the final-developed Mark product series to incorporate the company's patented Speedtronic control system technology across a range of different offerings. With this being the case, the Mark VIe Series that this IS220YDOAS1A device belongs to is additionally considered attractive on the larger automated industrial marketplace given the fact that it is one of the lastly-developed GE Mark product series to incorporate the patented Speedtronic control system technology across a range of its offerings.
Hardware Tips and Specifications
As a YDOA Discrete Output Pack module, the IS220YDOAS1A pack is used to interface a discrete output terminal board as well as up to two I/O Ethernet networks. The main components of this board are an acquisition board and a common processor board which are both used for helping with the discrete output functions. One key feature of this pack is its ability to control up to twelve potential relays as well as accept specific feedback from terminal boards. The output from this pack will be provided through a DC-37 pin connector which will connect directly with the associated terminal board.
This pack can be used in two different redundancy configurations. If the IS220YDOAS1A pack is being used in a TMR redundant application three I/O packs are required whereas only one is required when being used in a simplex redundant application. This pack has the ability to perform self-diagnostic tests, and one of these tests is a power-up test that will check the following features:
- processor board hardware
- flash memory
- Ethernet ports
- RAM
All of the details for this diagnostic will be available within the ToolboxST application of the YDOA pack. The YDOA pack has twelve LEDs that can indicate status, they will each provide an indication of the presence of a command which can energize the relay these LEDs will be yellow when indicating the outputs. The IS220YDOAS1A also has specific alarms which will indicate a variety of potential errors. One of the potential alarms is labeled as a 142 alarm which will indicate that there is no terminal board excitation or all of the fuses have blown. To correct this alarm replace the I/O pack or completely replace the terminal board.
