3-6
Operation 3
Contact Closure Control
Contact Closure Control
You can remotely control rotation of the valve by
using the contact closure pins on the
VALVEMATE’s rear panel.
For making contact connections, refer to Section 2 in
this manual. You can simultaneously control two
VALVEMATEs by connecting their inputs to the
same outputs on the contact device.
For information on sending contact signals, refer to
the information below and to the user’s guide for the
contact device.
When controlling a VALVEMATE using contacts,
send pulse signals. These signals momentarily close
(activate) and open (deactivate) a contact. The
duration of the pulse must be at least 0.0017 minute
(or 0.1 second).
Following are two examples for sending contact
signals. These examples assume that the contact
device’s output 2 is connected to the
VALVEMATE’s CCW input.
Example 1: If your contact device can issue pulse
signals, use the following example as a reference.
Time (min) Contact Action Description
0.10 Output 2 Pulse Pulses output 2. For a multi-position valve, turns the
valve counterclockwise, e.g., to position 2 if it was in
position 3. For a 2-position valve, turns the valve to its
other position.
Example 2: If your contact device cannot issue pulse
signals, use the following example as a reference:
Time (min) Contact Action Description
0.10 Output 2 Close Closes output 2.
0.11 Output 2 Open Opens output 2. For a multi-position valve, turns the
valve counter-clockwise, e.g., to position 2 if it was in
position 3. For a 2-position valve, turns the valve to its
other position.
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