PS200 Configuration & Operation Guide
MULTI PUMP-PROCESS CONFIGURATION
Page 26
Overview - Multi-Pump Applications
The following is an overview of the different Multi-pump
applications:
SYNCHRONOUS
In synchronous mode, a lead drive starts initially and
regulates to the set point. If the unit is unable to meet the
setpoint conditions, the lead PS200 will start a second PS200
pump and regulate both units to the same speed to meet the
setpoint. If the setpoint conditions are still not met a third
and fourth pump can be started and similarly be regulated to
the same speed. Similarly, when demand drops, PumpSmart
will de-stage pumps that are no longer required to meet the
setpoint.
PumpSmart can automatically switch between lead and lag
pumps to ensure that they all wear evenly.
MULTI-CONTROLLER
In multi-controller mode, a lead drive starts initially and
regulates to the setpoint. If this unit is unable to meet the
setpoint conditions, it will start a second PS200 pump. The
lead PS200 will continue at maximum speed while the
lagging drive will regulate speed to meet the setpoint. If
demand is still not met, the lead drive will start a third, and if
required a fourth, pump to meet the demand. In each case
the last PS200 drive/pump started will regulate to the
setpoint. When demand drops, PumpSmart will de-stage
pumps that are no longer required to meet the setpoint.
As with SYNCHRONOUS, it is possible to use dissimilar pumps
in this mode, however caution should be exercised to ensure
pump head curves are similar to prevent operation at shut-off
or check valve chatter on the lower head pump(s).
PumpSmart can automatically switch between lead and lag
pumps to ensure that they all wear evenly.
BACKUP
In cases where a backup pump exists and each pump is sized
to handle all the anticipated process demands, backup mode
may be used to provide automatic lead-lag switching to
provide uniform wear. In addition, in the event of a Pump
Protection or VFD fault, the backup unit will be automatically
started.
1
2
3
4
Discharge
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Typical Multi-Pump configuration
Summary of Contents for PumpSmart PS200
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