Operation manual of solar controller SR1568
Page 60 of 87
Adjustment for standard pump with speed control: PULS : Burst control via
semiconductor relay
Adjustment for high-efficiency pump (HE pump)
• PSOL: PWM profile solar pump
• PHEA: PWM profile heating pump
• 0-10: Speed control via 0 - 10 V signal
Note: more information about connection of high efficiency pump see page 9.
Minimum pump speed
Under the adjustment menu MIN (2, 3), a relative minimum speed for connected pumps can
be allocated to the outputs R1, R2 and R3.
Note: When the devices which are not speed-controlled are used (e. g. valves), the
pump speed value of the corresponding relay must be set to 100 % or the control type
must be set to ON/OF in order to deactivate pump speed control.
Maximum pump speed
Under the adjustment menu Max (2, 3), a relative maximum speed for connected pumps can
be allocated to the outputs R1, R2 and R3.
Note:When the devices which are not speed-controlled are used (e. g. valves), the
pump speed value of the corresponding relay must be set to 100 % or the control type
must be set to ON/OF in order to deactivate pump speed control.
PWM Relay allocation for PWM outputs
Under PWMA (B) menu, a relay can be allocated to a PWM output of the PWMA and PWMB.
LLOGI Priority Logic