Franklin Electric CERUS X-DRIVE CXD-003A-4V, Installation And Operation Manual

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OPERATION
Protection Features
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will be doubled. The VFD will continue restart attempts, doubling the timer value until it reaches 720 min -
utes (12 hours). Then every restart will be in 720 min. ULD Recover Cnt [SET–46] displays the countdown before
the next restart attempt.
When VFD finally runs without tripping for 180 sec, the recovery timer will be reset to original setting. Then,
at next underload trip, the VFD will wait for the well to fill for
ULD Recovery T [SET–45]
time value.
If the run command is removed, or HOA is set to OFF, the Underload feature is canceled and the ULD Recovery
T [SET–45]
timer is reset to its original setting.
Fine Tune Settings for ULD by Torque
1. Verify accuracy of
Motor FLA (SFA) [SET–03]
,
Motor Voltage [SET–05]
, and
VFD Base Freq [VFD–02]
. These values
determine nominal torque.
2. Adjust
ULD Frequency [SET–43]
to be equal to minimum operational frequency
[SET–13]
or
[SET–22]
.
3. Run motor at minimum frequency and verify water movement for pump or air movement for fans.
4. While running the motor at minimum frequency, determine whether VFD trips on ULD:
• If system trips on HLD using default ULD Level [SET–42] , decrease level by 3% until system does not
trip.
• If system does NOT trip using default ULD Level [SET–42] , increase the level by increments of 3% until
system trips, then decrease back by 3%.
5. If nuisance tripping occurs, lower ULD Min Torque [PROT–57] by increments of 1%.
6. Adjust
ULD Delay [SET–44]
to duration acceptable for operation.
7. Adjust ULD Recovery Time [SET–45] to a duration that fills up the well enough to allow motor to run mini -
mum time before another ULD trip.
Overpressure
The Overpressure feature stops the VFD when PID feedback exceeds a set value in either Hand or Auto.
To enable this feature, adjust the following parameters:
OverPress Set [SET–39]: 0_Disable , 1_OP Trip , or 2_OP Auto Reset .
• When enabled, if PID Feedback exceeds
OverPress Level [SET–40]
, the VFD trips on Overpressure fault.
• 1_OP Trip : Manual or remote reset is required. If Reset Restart [VFD–36] is enabled and a run command is
present, the VFD will restart when reset.
• 2_OP Auto Reset : The VFD will restart when PID feedback falls below Wake-Up Level [SET–31] and a run com -
mand is still present.
OverPress Level [SET–40]: Overpressure trigger level in PID feedback units, 0.0 to PID F/B Max [SET-20] .
No Flow Protection
The VFD can monitor a system flow switch to provide pump protection and more reliable sleep mode oper -
ation.
Flow Switch Terminal [IO–21 through 28]: Connect the flow switch to one of the Digital Inputs (MI1–MI8)
and set the corresponding parameter to 37_Flow Switch .
No Flow Mode [IO–38]:
0_Disabled
,
1_Trip
, or
2_Sleep
.
Prime Time [IO–39]: Some pump applications require time for the pump to self-prime before the load sta -
bilizes. This setting adds a delay before the VFD starts monitoring for Underload or No-Flow conditions,
which protects against nuisance faults. The delay operates at any VFD start, in both Hand and Auto modes,
including Run, Wake, Restart, or Reset commands.
No Flow Freq [IO–40]: Range = Low Freq Limit [SET-13] to High Freq Limit [SET-14] or PID Lo Hz Limit [SET-22] to
PID Hi Hz Limit [SET-23]
.
When No Flow Mode [IO–38] is set to 1_Trip and the VFD runs at a frequency greater than No-Flow Freq [IO–40] lon -
ger than
Prime Time [IO–39]
with the flow switch contact open, the VFD will trip on No Flow Fault.