3) Mode: 0/4—20
I
n this mode the pump will dose at a flow rate that is proportional to an input signal of the type 0/4--20 mA.
It is possible to establish a current value at which the pump will dose at the minimum rate (0 stroke/min), and a current
rate at which the pump will dose at the maximum flow rate,
equal to the value of the flow rate that we have established
(see the section on Adjustment of the flow rate).
Press the Prog button and select the PROPORTIONAL MODE (see Programming).
By pressing the Enter key once and the Prog key twice (see diagram), the 0/4—20 mode is entered directly and the
indication I will appear on the display. The 0/4--20 icon will start to flash.
By pressing the Enter key, this mode is “entered”, and the letter L will appear on the display together with the current
value at which the pump will dose at the minimum rate.
The arrows keys or can be used to increase or decrease this value.
If the Enter key is pressed again, the letter H will appear on the display, together with the current value at which the
pump will dose at the maximum flow rate.
The arrows keys or can be used to increase or decrease this value.
Note: The value of H must necessarily exceed the value of L.
WARNING: Having set first the value of L, the value of H can be set at a value 1 mA higher than L as a minimum.
Having set first the value of H, the value of L can be set at a value 1mA lower than H at a maximum.
Press Enter to confirm the settings and then exit from programming. The word Prog will appear on the display for about
one second, after which the value of the flow rate corresponding to the current signal received by the pump will be
displayed (as a frequency or as a % value, see the section on Adjustment of the flow rate).
To Next Page
Loading...