Is it possible to reset a universal controller to starting condition (e.g. C_CU)?
Is there any possibility to reset a controler to start condition (desired value = 0, control point= 0, Manual, External) in case of an emergency? So far I give the "EN" input a "False" signal in case of an emergency so that the pump or valve goes to the desired setting of 0. The problem ist, that as soon as I take away the emergency signal it leads to the settings from before (if standing in manual mode) leading to a start of the pump or opening of the valve. So is it possible to completely "Reset" the controller after an emergency?
Asked 4 years ago
Answers
1
Don't use the EN Pin.
Use the pins for operation mode (manual/auto) and tracking.
If emergency is detecterd, put the C_CU in manual mode and track to Y=0%
Answered 4 years ago
1
Just to clarify tr10091969's Answer:
The TRC pin switches the controller to "Trac" mode, OUT will become the OTA or OTM signal. As long the TRC pin is "true" the user cannot do anything with the controller. If TRC goes back to "false", the controller continues it's work.
The MM pin switches the controller to "Manual" mode. Different to the TRC pin the controller stay in "Manual" mode after MM is gone back to false.
- Emergency_Stop ---> true
- Controller ---> Trac & Manual
- OUT ---> 0.0 (Value from OTM)
.....
- Emergency_Stop ---> false
- Controller stays in Manual
- OUT stays 0.0
- User Action required to switch the controller back to operate
Answered 4 years ago
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