Appendix c: digital inputs on the mga 6010 – Super Systems MGA6010 User Manual
Page 54
MGA 6010 Operations Manual
Super Systems Inc.
Page 54 of 54
Appendix C: Digital Inputs on the MGA 6010
There are four Digital Inputs on the MGA6010. These are usually tied to external events or activated by an
external PLC. Each one has a different function as described below:
•
Digital Input #1 (Terminal 4431): Inhibits the COF/PF adjustment. When this is enabled, no
adjustments will be made to the COF/PF.
•
Digital Input #2 (Terminal 4441): Turns the sample pump off. When this is enabled, the sample pump
will turn off. If the pump is already off, then nothing will happen.
•
Digital Input #3 (Terminal 4451): Initiates a Zero Calibration. When this is enabled, the MGA will stop
current activities and begin a zero calibration via the Automatic Calibration Ports.
•
Digital Input #4 (Terminal 4461): Initiates a Span Calibration. When this is enabled, the MGA will stop
current activities and begin a span calibration via the Automatic Calibration Ports.
The digital inputs are enabled by completing the electrical connection between each input and the ground
terminal (Terminal 4471).
Example:
Assume that you want to turn the pump off at any time the door of the furnace is opened. You
might add some open contacts on the relay that is being used to open the door, so that when that relay is
activated, it connects terminal 4441 to terminal 4471. As long as the door is being held open, the pump
will not turn on.