OEG CPA-E Series - PWM Control Features; PWM Signal Control and Feedback

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. PWM control
CPA-E and CPA-E S PWM series
.. Control
CPA-E S PWM pumps can be controlled by an external PWM signal
(which can, for instance, come from a solar controller).
As long as the PWM signal is available, the pump automatically swit-
ches into PWM mode. Otherwise, the pump can be used with the
other operating modes. The PWM output mode can be used as feed-
back signal of the pump status for the controller. Colour code of the
wires in the PWM connection cable: White = input cable, red, output
cable (not supported by all controllers, connection not mandatory),
black = GND.
PWM
input signal (%) Pump status
 Pump switches to non-PWM mode.
<  Pump operates at highest speed.
~ Speed adapts to input signal.
~ Pump operates at lowest speed.
~ Pump reduces speed.
~ Stand-by, pump stopped.
 Pump switches to non-PWM mode.
PWM
output signal (%) Pump status Description
 Standby (stop) Pump stopped.
 Error message Pump not operating, only
(pump stalls) restarted after troubleshooting.
 Error message Pump not operating, only
(electrical fault) restarted after troubleshooting.
 Warning Pump is operating. Error is not critical
and pump can continue working.
GB
High-efficiency heating and solar circulation pumps