Franklin Electric CERUS X-DRIVE CXD-003A-4V, Installation And Operation Manual, Page: 147 / 252

MAINTENANCE
Troubleshooting
147
MVWV
(184)
M-VFD Wrong Ver
Wrong software version of drive operating Multi-VFD. Software version of follower (this drive) is different from the
master.
Action and Reset
Action level [VFD-49] different than master drive. To identify master drive, set [SET-58] to 23_Commu Role . On screen, 0=No Role,
1=Master, and 2=Follower.
Action time Immediately
Related parameters [VFD-49]
Reset method Reprogram drive
Reset condition Immediately
Recorded Yes
Possible Causes Corrective Action
• Drive has different firmware VFD-49
than master.
• Reprogram drive with same firmware as master. To identify master drive, set [SET-58] to 23_Commu Role .
On screen, 0=No Role, 1=Master, and 2=Follower.
• Replace drive with one that has matching firmware.
• Remove drive from network and operate independent.
Fault Display Description
NOFL (178)
No Flow(I)
Flow switch has detected no movement of fluid.
Action and Reset
Action level Multi-function Input set to No Flow function is activated. Detection occurs after motor runs above min frequency for
duration of
Prime Time [IO-39]
and above
No-Flow Freq [IO-40]
.
No-Flow Mode [IO-38]
sets operation as
1_Trip
or
2_Sleep
where
additional condition of
No-Flow [IO-38]
has to be met to incur sleep mode.
Action time Once detection occurs, MI has to be active for 5 secs.
Related parameters
[IO-38]
through
[IO-40]
;
[IO-20]
through
[IO-28]
;
[IO-46]
Reset method Manually
Reset condition MI becomes deactivated
Recorded Yes
Possible Causes Corrective Action
• No water (dry well)
• No-flow switch is Normally Closed
(closed when water is moving)
• Nuisance tripping
• Water flow is too low
• Pump has not finished filling pipe
with water
• Refill cistern or wait for well to fill with water
• Change
DI NO/NC [IO-46]
for designated input to NC.
• Review installation instructions with No-Flow Switch which include installing on long straight pipes
(no turns) and orientation (horizontal).
• Calibrate flow switch
• Increase Prime Time
Fault Display Description