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Off: Set Humidity Percent Cmd to 0% and turn off all the stages, but observe the minimum on and off timers.
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Instant Shutdown: Turn everything off, do not observe minimum on and off timers.
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Hold: Holds the outputs at their current position. If the Output Overridden is true, then the Output Position input is passed to the Valve Percent Command.
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H Control: When operating in the H Control mode, the activity attempts to control the process variable (either return humidity or zone humidity) to the setpoint. As the humidity drops below the setpoint, the analog percent output Humidity Percent Cmd increases, which with the intervention of the MSC module causes the controlled devices to remain on longer and/or turn on more devices.
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Limited H Control: When operating in the Limited H Control mode, the activity attempts to control the discharge humidity to the setpoint. As the humidity rises above the setpoint, the analog percent output Humidity Percent Cmd decreases, which with the intervention of the MSC module causes the controlled devices to remain on less time and/or turn off more devices. This mode is the humidity high limit mode and is intended to prevent the discharge air from becoming too humid.
Mode |
PID Tuning Reset |
State |
---|---|---|
Off |
* |
Off |
Instant Shutdown |
* |
Instant Shutdown |
H Control |
* |
H Control |
Limited H Control |
* |
Limited H Control |
Hold |
Reset 1st PID |
Limited H Control |
Hold |
* |
Hold |
Mode |
PID Tuning Reset |
State |
---|---|---|
Off |
* |
Off |
Instant Shutdown |
* |
Instant Shutdown |
H Control |
* |
H Control |
Limited H Control |
* |
Limited H Control |
Hold |
Reset 1st PID |
Limited H Control |
Mode |
State |
---|---|
Off |
No Limit Control |
Instant Shutdown |
No Limit Control |
H Control |
No Limit Control |
Limited H Control |
Limited H Control |
Hold |
Hold |