ProMinent DULCOMETER D1C A D Series, Operating Instructions Manual, Page: 17 / 24

17
Complete Operating Menu / Description
At the end of the (timer) cycle time, the DULCOMETER
®
D1C closes the assigned relay for the duration of
“t on” (timer). “Pause” interrupts the timer.
When the clock is shown in the LC display, the timer can be reset to the start of the cycle at precisely this
point using the Enter button.
The % figure in the LC display indicates the progress of the current cycle.
Timer relays may be used, e.g. for shock metering or sensor cleaning.
Cycle
min. time
Solenoid
valve
off
on
t
t
on
off
on
t
t
on
Cycle
Control
variable: 50 %
t
on
Cycle
= 0.50
Control
variable: 80 %
t
on
Cycle
= 0.80
The switching time of the DULCOMETER
®
D1C (solenoid valve) depends on the actuating variable and the
“min. time” (smallest permitted operating factor of the connected device).
The actuating variable determines the ratio t
on
/cycle and thus the switching times (see fig. above).
The “min. time” influences the switching times in two situations:
a) theoretical switching time < min. time:
off
on
t
off
on
t
Cycle
Cycle Cycle
Cycle Cycle Cycle
min. time
min. time
theoretical
actual
The DULCOMETER ® D1C does not switch for a certain number of cycles until the sum of the theoretical
switching times exceeds the “min. time”. Then the DULCOMETER
®
D1C switches for the duration of this
total time.
b) theoretical switching time > (cycle - min. time) and calculated switching time < cycle
Cycle
min. time
off
on
t
off
on
t
Cycle Cycle
Cycle Cycle Cycle
min. time
theoretical
actual
The DULCOMETER ® D1C does not deactivate for a certain number of cycles until the differences between
cycle and theoretical switching time exceed the “min. time”.
BA_DM_183_10_10_EN.p65 28.10.2010, 11:44 Uhr 17