17. Add-on Controller
88
Dr. A. Kuntze
I
Gutes Wasser mit System
Robert-Bosch-Str. 7a
40668 Meerbusch
+49 (0) 2150-7066-0 / Fax -60
www.kuntze.com
17.2.1. CONFIG – pulse-pause or pulse-frequency for P/PI/PID
Select the controller type P or PI or PID in the menu S1/S2 CONTROL. Enter the menu S1/S2 CONFIG
and set the following parameters:
Pulse type
When using the relays to control actuators, proportional reduction can be achieved in two ways: via time
frames in which the relay is ON (pulse) and OFF (pause) in relation to the controller output (pulse-pause
controller) or via the switching frequency of the relay (pulse-frequency controller).
Pulse min (only for pulse type = pulse pause)
Define a minimum pulse, i.e. the minimum time the relay has to be on to allow the actuator to react.
Pulse pause (only for pulse type = pulse pause)
For a pulse-pause controller define as Pulse-Pause time a time-frame in which the relay is on (pulse)
and off (pause) according to the control variable.
Note
The pulse-pause time must be at least twice as long as the minimum pulse.
Pulse frequency (only for pulse type= pulse frequency)
Enter the frequency that corresponds to maximum dosing.
17.2.2. CONFIG – Motor run time and minimum pulse for 3-point controller
Select the controller type 3-point controller in the menu S1 CONTROL. Enter the menu S1/S2 CONFIG
and set the following parameters:
Pulse min
Define a minimum pulse, i. e. how long the relay has to be ON to allow the actuator to react.
Motor run time
To control a motor-operated valve, the instrument needs to know how long it takes the motor to
completely open the valve when it had been completely closed.
Determine that time by closing the valve completely and then opening it in manual operation, or vice
versa. This time is the motor run time.
