VMX
2
Series Digital Solid State Soft Starter User Manual
48 |
P a g e
F042 = Over Current Trip / Shear Pin Trip
Factory Setting = 0 (Disabled)
Range = 100 - 300%, 0 (Disabled)
When a value other than 0 is entered in
F042
, the starter will
trip when the output current of any phase exceeds the amount
set and the time specified in
F043
. This is also referred to as a
“Shear Pin Trip” and can be used to protect mechanical
components from damage due to jammed loads.
Note:
Overcurrent trip is only enabled after motor reaches “At
Speed”, it will not trip during acceleration”.
F043 = Over Current Trip Delay
Factory Setting = 1 second
Range = 1 - 20 seconds
Provides a time delay to prevent nuisance trips from short-duration
transients. For example using default settings, if the output current of
any phase exceeds
F042
for more than 1 second, the starter will trip.
F044 =
Under Current Trip
Factory Setting = 0 (Disabled)
Range = 10 - 90%, or 0 (Disabled)
When a value other than 0 is entered in
F044
, the starter will trip when
the output current of any phase drops below the amount set, and the
time specified by
F045
. This fault condition is often referred to as a
“Load Loss Trip” and can be used to detect a broken shaft, V belt or
other mechanical drive system component failure. In pumping
applications, this can be used as a “Loss of Prime” trip.
F045 = Under Current Trip Delay
Factory Setting = 2 seconds
Range = 1 - 60 seconds
Provides a time delay to prevent nuisance trips from short-
duration transients. Using the default setting, if the output
current of any phase drops below
F044
for more than 2
seconds, the starter will trip.
5.6.8.a Ground Fault
F046 - F047
provides Ground Fault protection for equipment only using
the Residual Current method. Trip settings are based on the CT ratio as
shown in
F074
. A delay time can be set by
F047
to help prevent
nuisance trips. Ground current can always be viewed in the Status
Display, shown with a “G” prefix (see section 5.3.1).
WARNING!
THIS IS NOT INTENDED TO BE USED AS
"PERSONNEL PROTECTION" GROUND FAULT!
This feature is only intended to provide a level of
equipment protection against damaging ground
currents. Ground faults are potentially dangerous
conditions and must be corrected immediately for safety of
operating personnel.
