E/0310/50/29
In a CW application, the CompTrol 1002 is usually used for a proportional valve with motor drive.
The operation of the control is explained in the following drawing (example for a 150- seconds-
runtime).
When connection V+ is supplied with power, the valve is completely opened within 150 seconds
(operation level 0% to operation level 100%). Shorter times mean steeper operation level. When
connection V- is supplied by power the valve is closing. If there is a power interruption to the valve,
the last operation level is fixed.
The consumer is connected to 24V.
Examples:
The function of a triac cannot be checked by means of an ohmmeter. Measurements provided
by these instruments would give faulty results because a triac needs a load for a correct function.
For an operational test, a tester with filament lamp (about 2 W) should be used.
Inputs are designed for 24 V AC, but also a voltage 24V DC can be used.
Valve Contactor
Operation
level / %
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