ProMinent DULCOMETER Compact - Setting and Functional Description of Relay Used as a Solenoid Valve

10.9 Setting and functional description of "Relay Used as a Solenoid
Valve"
Cycle
min. time
Solenoid
valve
off
on
t
t
on
off
on
t
t
on
Cycle
Actuating
variable: 50 %
t
on
Cycle
= 0.50
Actuating
variable: 80 %
t
on
Cycle
= 0.80
A0025_GB
Fig. 33: Solenoid valve (= P-REL: dosing)
min. time [MIN ON] Cycle = [PERIOD] (in seconds)
Solenoid valve switching times
The switching times of the relay (solenoid valve) depend on the cycle time, the con‐
trol variable and the ‘min. time’ (smallest permissible switch-on time for the con‐
nected device). The actuating variable determines the ratio t
on
/cycle and thus also
the switching times.
The ‘min. time’ affects the switching times in two situations:
Control parameters and functions
86