IS220YDOAS1A

Product Description

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, one of these tests is a power-up test that will check the processor board hardware, flash memory, Ethernet ports, and 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.