Programing hints
Whenever you do not need one of the inputs, set them to the values defined in the next table:
Inputs |
Default values unused inputs |
FanSpeedControl |
0 |
FanEnable |
1 |
ManSwCmd |
3 |
Status |
connect to FanCmd if not used |
Alarm |
0 |
FanBeltIn |
connect to FanCmd if not used |
MaintSw |
1 |
Reset |
0 |
PlantMode |
4 |
The macro uses the startup flag, use the Startup macro or reset the flag to 0 by yourself after controller is started.
Module applicability for pump control
The module can be used for pump control as well as fan control. In case of pump control, the internal datapoints of "PlantMode" are mostly not used, so,
these points should be connected to (read only) “dummy VA-points” with the respective value of “4” . The input "FanDiffPressur"e now could be used as a pump differential pressure monitoring;
the input MaintSw as the pump main switch; the input Status as pump status monitoring. With the "FanControlSignal" input the pump speed can be defined from 0…100%.
Although the title of the inputs, outputs and internal datapoints of the module were designed for fan control, a pump can be controlled as well.