VMX
2
Series Digital Solid State Soft Starter User Manual
37 |
P a g e
5.6
Function Descriptions
Your
VMX2 Series
starter is set at the factory with typical default
settings that perform well in most applications. Following are detailed
descriptions of each Function and the factory default settings.
5.6.1 Motor and Overload Function Descriptions
F001= Motor FLA
Factory Setting = 0
Range = 50 - 100% of Unit Max. Current
Set the value of this function to the motor nameplate Full Load
Amps (FLA). Adjustments for service factor are not necessary
when programming this function (See note below). If the motor
nameplate FLA is not available, use typical values as shown in
NEC, NEMA standard MG-1, or other reputable third party
source (motor manufacturer, etc.).
▪
Note:
To prevent adjusting the settings beyond the starter Max Amp
rating, the range of adjustment for the Motor Nameplate FLA will
vary in accordance with the Service Factor as programmed into
F002
. At the default setting of 1.0SF, the full range of adjustment
from 50 - 100% of the Max Amp rating is available. As the Service
Factor is increased, the FLA range will drop by an equal ratio. For
example if
F002 = 1.15
(a 1.15 Service Factor), the maximum FLA
programmable into
F001
will be limited to 85% of the starter Max.
Amp rating (100% - 15%).
F002 = Service Factor
Factory Setting = 1.0 S.F.
Range = 1.00 - 1.30
Set value according to the Service Factor (SF) data provided on
the motors’ nameplate. This value affects several protection
features so it must be accurate. Setting the SF too high may
result in motor damage in an overload condition. Setting SF too
low may cause nuisance trips; however, a 1.0 SF setting is
safest if SF is unknown.
▪
Note
:
The combination of
F002
and
F001
(FLA x SF) cannot exceed the
Unit Max Amp rating. If when programming
F002
you are not
allowed to raise the setting, the combined total has been exceeded.
F003 = Overload Class During Start
Factory Setting = 10 (Class 10)
Range = NEMA / UL Class 5 - 30
Set value to the motor protection overload class required for the
application. It is recommended that you try the factory setting
first. (If possible, keep values for
F003
and
F004
the same.)
Increase
F003
above
F004
only if nuisance tripping occurs
during start. See Section 3.2 for details on trip curves.
MOTOR FLA (F001)
must be programmed
for unit to operate!
