ITT Industries PumpSmart PS200, Configuration & Operation Manual

Page: 69 / 159

PS200 Configuration & Operation Guide
SPEED CONTROL CONFIGURATION
Page 67
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Recommended Option: Secondary Protection
To provide protection from dry-running or operating against a
closed discharge valve in multi-pump mode, the PumpSmart
secondary protection feature may be used. In this case, additional
process condition inputs (e.g. level switch, pressure switch, flow
switch, etc…) are used to alert PumpSmart of conditions that
require the protection of the pump. Alternatively, PumpSmart TPP
may also be used. See the Options & Features Section for details.
Discharge Header
1
Flow Switch
Speed Signal
Figure C - Speed Control Secondary Protection
In the above example, a unit is being controlled by an external
speed signal. A flow switch is added to the pump installation and
wired into the PumpSmart controller. This provides dry run and
shutoff protection.
Once wired, parameter 25.06 SECONDARY PROTECT A must be set
to ALARM or ALARM AND CONTROL. The response being:
1. ALARM & CONTROL- In this response, PumpSmart will issue a
warning and then either shut down or reduce speed
depending on your settings. If the PumpSmart controls to
minimum speed on a secondary protection fault, and the fault
is reset, the unit will resume normal operation. If the fault is
not reset, PumpSmart will continue to operate at MINIMUM
SPEED until it is manually shut-down or the flow condition
clears.
If parameter 14.05 CONFIG SPEED MIN is set to SPD=0,
PumpSmart will control by shutting down and will remain off
until the fault is RESET and the drive is manually restarted. If
parameter 12.02 AUTO RESTART is set to “on”, the drive will
automatically RESTART once the fault is reset.
Alarm & Control is the recommended setting.
!
TORQUE PUMP PROTECT
PumpSmart TPP can also be used
to provide protection against
operation below minimum flow,
dry-running, and run-out
conditions.
SEE OPTIONS & FEATURES
SECTION