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The controller
modulates the output single pulse width to regulate RPM as determined by a 2–10VDC or 4–20mA DC input signal provided by the customer.
There is also a manual speed adjustment to aid in setup or flow
calibration tasks. A continuous flow level can be achieved with the
manual speed adjustment biasing the motor on at your desired level.
Variable speed operation will automatically resume when the input signal
exceeds the manual speed setting.
Application
The variable speed
controller is
used for adjustment of motor RPM within a limited range of operating temperatures that assure adequate
operation of the motor. The controller is designed for air moving applications using squirrel cage or propeller type fans.
It may be suitable for other, non air-moving, direct drive motor applications.
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