PS200 Configuration & Operation Guide
MULTI PUMP-PROCESS CONFIGURATION
Page 27
CONSTANT SLAVE
In constant slave mode, one PumpSmart PS200 can be used in
combination with conventional fixed speed pumps to meet
varying demands. The PS200 will signal the constant speed
pumps to turn on during periods of peak demand. The PS200
unit will then regulate speed to “trim” to the setpoint. This
configuration reduces the number of required PumpSmart
PS200 units to one. When demand drops, PumpSmart will
stop the lagging pump.
Up to three constant speed pumps may be used with the
PS200 system.
In constant slave mode, the PS200 is always the lead pump
and the constant speed pump is always the lag pump.
NOTE
It is possible to use dissimilar pumps in any of the above
Multi-Pump modes. Caution should be exercised however to
ensure that pump head curves are similar to prevent
operation at shut-off or check valve chatter on the lower
head pump(s).
IT IS RECOMMENDED THAT ALL PUMPS BE IDENTICAL IN
PERFORMANCE
1
2
Discharge Header
F
Standard starter
What's Lead and What's
Lag?
A LEAD pump is the pump
that runs before all others are
activated. This may
sometimes be referred to as
the
PRIMARY
unit.
A LAG pump starts only when
the demand on the system
becomes greater than what
the lead pump can handle.
This is sometimes called the
BACKUP
or
SECONDARY
unit.
LEAD's and LAG's can be
switched to allow for uniform
wear. See OPTIONS &
FEATURES for details.
Constant Slave Configuration
Summary of Contents for PumpSmart PS200
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