Pwm Control; Control - OEG CPA-E Serie Mode D'emploi

CPA-E and CPA-E S PWM series

9. PWM control

9.1. 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 (%)
0
< 10
10~84
85~91
91~95
96~99
100
PWM
output signal (%)
95
90
85
75
High-efficiency heating and solar circulation pumps
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.
Pump status
Standby (stop)
Error message
(pump stalls)
Error message
(electrical fault)
Warning
Description
Pump stopped.
Pump not operating, only
restarted after troubleshooting.
Pump not operating, only
restarted after troubleshooting.
Pump is operating. Error is not critical
and pump can continue working.
43
GB