ABB ACQ580 Firmware Manual page 66

62 Program features
Pump priorities
The pumps are prioritized based on energy efficiency and process demand.
High – more energy efficient pumps
Normal – less energy efficient pumps
Low – pumps which do not run unless process demands
You can select the pump priority with parameter 76.77 Pump priority. The IPC system
prefers high priority pumps over normal and low priority pumps. You can limit the time
with parameter 76.76 Max stationary time, so that even the low priority pumps are
often run to keep them in operational condition.
Automatic parameter synchronization
Automatic parameter synchronization feature reduces the number of configuration
steps in the IPC system.
The synchronized parameter groups are selected with parameter 76.102 IPC
synchronization settings. In addition, there are some drive dependent parameters
that are not synchronized, like 76.22 Multipump node number. To enable
synchronization of a parameter group between two or more drives, the group
synchronization must be enabled in all the drives.
The synchronization process uses two mechanisms to make sure that the parameter
groups are synchronized. When a parameter value is changed in a drive, it
broadcasts the changed parameter value to inverter-to-inverter (I2I) link. From the
inverter-to-inverter (I2I) link, all the drives that have the synchronization enabled,
reads the value and set their own parameter value.
In addition, the drive periodically broadcast the group CRC to the inverter-to-inverter
(I2I) link along with the time stamp of the last edit time of the group. From this
information, the drives can conclude if the group is synchronized and which drive has
the latest parameter values. If there is a CRC mismatch, the drives request the
parameter values from the parameter group and from the drive with the latest values.
Settings
Menu - Primary settings - Multipump Control (IPC)
Parameter groups 01 Actual values (page 103), 40 Process PID set 1 (page 213), 76
Multipump configuration (page 256), 77 Multipump maintenance and monitoring
(page 267) and 82 Pump protections (page 274).