Timer Programming

Did you check the manual ???

try the link below...

http://www.hugo-mueller.de/manuals/96_WEB_BA_SC1810_28X0_28X1_pro_GB.pdf

I do not know how to program this timer. But I can tell you the basic control logic. As I understand this group of 6 motors will remain in operation and in stop condition in 8 hours cycle. Hence there should be a master clock timer for giving pulse in every 8 hours. After getting the starting pulse Pump No.1 will start. After allowing sufficient time (through timer) for acceleration and completion of starting of pump no.1, the second pump should get starting command and this process will continue till the last pump i.e pump no. 6 is started.

Staggering of starting is needed for evenly spacing the starting inrush current which is typically 6 times of the motor rated current. In case of simultaneous starting of two or more motors, the upstream circuit breaker may trip.This depends on the KW rating of the motors and the overcurrent setting of the upstream circuit breaker.

During stopping, stop command can be given for simultaneous stoppage of all the motors. However, if there is any possibility of 'water hammering', the pumps may be stopped one after another.