ITT Industries PumpSmart PS200, Configuration & Operation Manual

Page: 38 / 159

PS200 Configuration & Operation Guide
MULTI PUMP-PROCESS CONFIGURATION
Page 36
Example – if full load rpm = 3550, set min
speed to 355. Use greater than 10% if either of
the following conditions exist.
x Pump Minimum Speed - Some pumps have
minimum speed requirements, such as
multistage pumps (>2 stages) and sleeve
bearing pumps. Consult your pump operation
manual to see if there is a minimum speed limit
for your pump.
Note - 1& 2 stage pumps do
not normally have minimum speed
requirements.
x Static head conditions (minimum flow) - The
minimum speed should be set to assure that the
pump generates enough head to overcome the
static resistance. In some cases, this can cause
overheating and possible vaporization of the
liquid in the pump casing.
14.02 MINIMUM SPEED
KEY SEQUENCE
[From parameter: 14.01 MAXIMUM SPEED]
OR
Scroll to parameter 14.02
MINIMUM SPEED
ENTER
Press to enter the
parameter setting mode
OR
OR
Use a combination of the
arrow keys to scroll to the
minimum speed.
Enter the minimum
speed that the pump
and motor can safely
operate at.
Consider-
x Turndown ratio
x Pump minimum
speed
x Minimum flow
The default value is 25%
of the speed set in
parameter 11.07 MOTOR
FL RPM
ENTER
Press to complete the
entry
NOTES
The default settings of the PumpSmart drive will stop the
pump if the process demand requires the pump to
operate below the minimum speed. A LOW DEMAND
Fault will be displayed in this case. A delay can be set for
up to 30 minutes (1800 sec) before shutting down.
Alternatively the drive may be set to operate at a
minimum speed until it is manually shut-off. If the
process condition clears while operating at minimum
speed, PumpSmart will resume normal operation. See the
OPTIONS section for further details.
If PumpSmart shuts-down due to a pump protect fault, it
can be programmed to try and restart multiple times
before shutting down completely. The interval between
these times can be adjusted for up to 250 seconds. The
default value is 60 seconds. The AUTO RESTART and
ERROR RESET features must be set to "ON". See the
OPTIONS section for further details.
Once PumpSmart exhausts the selected number of reset
attempts, the unit shuts down completely and must be
manually restarted.
ACT PAR FUNC DRIVE
ENTER
1 L
Æ
0 P S I G 0
1 4 S P D L I M / S T R T L V L
2 M I N I M U M S P E E D
463