Technical data
17
Subject to technical changes.
200114
BA-42820-02-V03
Water sampling station
EASYPRO
Operating instructions
5.7 Controller functions
Outputs
Controller functions
Behaviour
Relays
Optocoupler
Ser
vomotor
relay
Ser
vomotor
20 mA
x
On/Off
n
The output switches if a value is exceeded.
n
Hysteresis can be set from 0,1 – 50 %
x
x
Pulse frequency
Or 2-sides
Pulse frequency
n
Relay: 10 – 100 pulses per minute
n
Optocoupler: 10 – 350 pulses per minute
n
The pulse frequency is dependant on the control deviation and the set control
parameters. With a control output power of Y = 25 % and a maximum pulse
frequency of 100 pulses/min., the controller would output 25 pulses/min.
x
Pulse length or
2-sides pulse length
n
0 – 3600 seconds cycle duration
n
Relay output (e. g. for solenoid valve)
n
Depending on the control deviation and the defined control parameters, the relay
pulls in or drops out for the set cycle duration. If the cycle lasts 30 seconds and the
controller output power is 40 % the relay applies for example for 12 seconds,
followed by 18 seconds of non-application.
x
Servomotor with
potentiometer
n
A feedback potentiometer can be connected (1 – 10 kΩ) for servomotors with
position feedback.
n
Compensate the feedback potentiometer. During compensation, the servomotor is
first started and then stopped automatically.
x
Servomotor without
potentiometer.
n
For servomotors without feedback.
n
Measure and set the runtime of the servomotor.
x
Continuous output
n
Continuous control output from 0/4 – 20 mA for the actuation of constant actors.
x
Servomotor with 20 mA
feedback
n
Servomotors which are controlled via 0/4 – 20 mA and have a 0/4 – 20 mA position
feedback.
Tab. 20: Functions of the individual controllers
