Additional control functions

At what time interval does the pump check whether a change in volume flow has occurred with No-Flow Stop?

The pump checks every 5 minutes (300 s) whether the volume flow requirement increases again. When the volume flow increases again, the pump continues running in its set control mode in normal operation. See also the “No-Flow Stop” section.

Is the additional function Q-Limit min/max possible in combination with a 0 to 10 V setpoint control?

Only the setpoint for the control function is changed via 0 to 10 V control.
Q-Limit min/max is an additional function which operates independently of this.
Q-Limit min/max is not provided with all control modes, e.g. not with Q-const. With Q-const., the setpoint range can be specified via 0 to 10 V for the parameterisation of the transfer curve 0 V = x m³/h, 10 V = y m³/h.

Is the setting range for the additional function Q-Limit min possible below 10% of Qmax?

No, for technical reasons, the Q_min lower limit cannot be under 10% of Q_max.