Application macros 105
Multipump control macro
Description and typical application
This macro is suitable for pump stations that consist of multiple pumps, each
controlled by a separate drive.
The configuration supports redundancy so that in case of a pump failure or
maintenance action on one drive, the remaining drives continue operation. The drives
communicate with each other through the drive-to-drive (D2D) link. It is possible to
distribute two analog and five digital signals from a specific drive to the other drives
via the drive-to-drive link (see parameters 76.11…76.16).
The multipump macro has three modes selectable by parameter.
• In master-regulated operation, when the load increases, the master’s speed
increases. After the master has reached full speed, other drives are started one
by one. Depending on a parameter setting, the master status is retained by the
first drive, or passed on to the drive that was started last.
• Follower drives are run either at a pre-set speed (i.e. at the optimal operating
point of the pump) or at the same speed as the master. In both these modes,
drives can be prioritized so that the one with the highest priority is the first to be
started.
• In direct follower operation, all drives run in synchronization with the master. This
mode can be used in time-critical applications or for testing of the pump
installation.
Default settings
Below is a listing of default parameter values that differ from those listed in chapter
Additional parameter data (page 287).
Parameter
Multipump control
macro default
No. Name
16.16 Menu set active M pump short
16.20 Macro selected Multi pump
XD2D XD2D XD2D
DI
AI
XD2D
Drive 1 Drive 2 Drive 3 Drive 8
Control data + shared signals
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