Instruction manual V 2.3
27
PWM 230 - PWM 400 - PWM 400/7.5
Instruction manual
5 PARAMETER
MEANINGS
5.1 Configurable
parameters
5.1.1
User’s parameters (MODE & SET access keys)
WARNING
:
If during this phase an error or a malfunctioning occurs, the display will not be modified.
Depending on the kind of error, the electro pump can be stopped. Nevertheless, it is still
possible to make the desired calibration. In order to know which kind of error occurred, you
must go back to the mode where you can see the operation status by pushing the SET
button.
5.1.1.1
SP: Setting the set-point pressure
From normal operation status keep the “MODE” and “SET” keys simultaneously pressed until “SP” appears
on the display. In these conditions the + and - keys allow to increase or decrease the desired pressure.
Set-point pressure may range from 1,0 to 15,0bar.
Press “SET” to go back to normal operation status.
Note:
when the system is configured to work with the controller board (see sec. 5.1.2.6) SP cannot be set
from PWM menu, because regulation is managed by the controller board. If communication is lost,
PWM automatically loads as SP the last restart pressure value sent to it by the controller board.
The PWM restart pressure is set through the "rP" parameter that represents the pressure decrease
(measured in bar), with respect to "SP", that causes the pump to start (see sec. 5.1.2.5)
Example:
SP = 3,0 bar; rP = 0,5 bar:
During normal operation the system will be pressurized at 3,0 bar.
The electro pump will restart, when pressure goes under 2,5 bar.
Note:
The rP parameter is not available in case of controller board controlled operation (see sec. 5.1.2.6.2)
5.1.2
Installer’s parameters (access keys MODE & SET & -)
Warning
:
If an error of malfunctioning occurs during this phase, the display is not changed. Depending
on the type of error, the electro pump may turn off. However, it is still possible to make the
desired calibration. To know which type of error occurred you must press the SET key in
order to return to the mode in which the operating status is displayed.
From normal operating status, hold down the “MODE” & “SET” & “-“ (minus) keys simultaneously pressed,
until “rC” appears on the display. In these conditions the + and - keys allow you to increase and decrease the
value of the parameter respectively, while the MODE key allows you to move to the next parameter in cyclic
mode.
Press SET to return to normal operating status.
5.1.2.1
rC: Setting the rated current of the electro pump
Generally on the electro pump motor there is a rating plate showing the absorbed current value (in A) of the
different configurations of the same motor.
For PWM 230 the motor must be configured to work with a three-phase 230V (usually delta-wired) set of
voltages. The current to be set refers to 230V operation.
