English
Installation and operating instructions Wilo-VeroLine IP-E, Wilo-VeroTwin DP-E
83
These parameters should only be changed in small increments, and
the effects on the system should be monitored continuously. Param-
eter values should only be tuned by someone with training in control
engineering.
The direction of action of the controller is determined by the sign of
the P term.
Positive PID control (default):
If the sign of the P term is positive and the process value drops below
the setpoint, the control will increase the pump speed until the set-
point has been reached.
Negative PID control:
If the sign of the P term is negative and the process value drops below
the setpoint, the control will decrease the pump speed until the set-
point has been reached.
NOTE:
Check the controller's direction of action if PID control is being used,
but the pump is only running at minimum or maximum speed without
responding to changes in the parameter values.
10
Maintenance
Safety
Maintenance and repair may only be carried out by qualified per-
sonnel!
It is recommended to have the pump serviced and checked by Wilo-
Customer Service.
DANGER! Risk of fatal injury!
There is risk of fatal injury due to electrical shock when working on
electrical equipment.
• Work on electrical equipment may only be done by electricians
approved by the local electricity supplier.
• Before working on electrical equipment, switch it off and secure it
against being switched on again.
• Never use an object to poke around the openings on the module
and never insert anything into the module!
• Follow the installation and operating instructions for the pump,
level control device and other accessories.
Controller
term
Factory setting
Setting range
Increment
P
0.5
-30.0...-2.0
-1.99...-0.01
0.00
...
1.99
2.0
...
30.0
0.1
0.01
0.01
0.1
I
0.5 s
10 ms ... 990 ms
1 s
... 300 s
10 ms
1 s
D
0 s
(= deactivated)
0 ms
... 990 ms
1 s
... 300 s
10 ms
1 s
