7.5 - Operation of two units in master/slave
mode
The control of a master/slave assembly is in the entering water
and does not require any additional sensors (standard configuration).
It can also be located in the leaving water. In this case two
additional sensors must be added on the common piping.
All parameters, required for the master/slave function must be
configured using the MST_SLV menu.
All remote controls of the master/slave assembly (start/stop, set
point, load shedding etc.) are controlled by the unit con-figured as
master and must only be applied to the master unit.
Each unit controls its own water pump. If there is only one common
pump, in cases with variable flow, isolation valves must be installed
on each unit. They will be activated at the opening and closing by
the control of each unit (in this case the valves are controlled using
the dedicated water pump outputs). See the SmartVu
TM
Control
IOM for a more detailed explanation.
■
30XW-V/30XWHV with configuration: leaving water control
2
1
Legend
Master unit
Slave unit
Control boxes of the master and slave units
Water inlet
Water outlet
Water pumps for each unit (included as standard for units with hydraulic
module)
Additional sensors for leaving water control, to be connected to channel 1
of the slave boards of each master and slave unit
CCN communication bus
Connection of two additional sensors
7 - WATER CONNECTIONS
22
