BENSHAW RediStart MX3 Series, User Manual

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Motor Starting Overload Class PFN 29
LCD Display
Range Off, 1 – 40 (Default 10)
Description The Motor Starting Overload Class parameter sets the class of the electronic overload when starting. The
starter stores the thermal overload value as a percentage value between 0 and 100%, with 0% representing a
“cold” overload and 100% representing a tripped overload.
The starting overload class is active during Kicking and Ramping when the Independent Starting/Running
Overload parameter is set to “On”.
When the Motor Starting Overload Class parameter is set to "Off", the electronic overload is disabled while
starting the motor.
z
NOTE : Care must be taken not to damage the motor when turning the starting overload class off or setting
to a high value.
z
NOTE:
Consult motor manufacturer data to determine the correct motor OL settings.
See Also
Independent Starting/Running Overload parameter (PFN28) on page 105.
Motor Running Overload Class parameter (PFN30) on page 106.
Motor Overload Hot/Cold Ratio parameter (PFN31) on page 107.
Motor Overload Cooling Time parameter (PFN32) on page 108.
Relay Output Configuration parameters (I/O 10-15) on page 112.
Theory of Operation section 7.1, Solid State Motor Overload Protection on page 138.
Motor Running Overload Class PFN 30
LCD Display:
Range
Off, 1 – 40
(Default 10)
Description
The Motor Running Overload Class parameter sets the class for starting and running if the parameter is set to
"Off". If separate starting versus running overload classes are desired, set the parameter to "On".
The motor running overload class parameter sets the class of the electronic overload when up to speed and
stopping. The starter stores the thermal overload value as a percentage value between 0 and 100%, with 0%
representing a “cold” overload and 100% representing a tripped overload. See section 7.1, for the overload
trip time versus current curves on page 138.
When the parameter is set to "Off", the electronic overload is disabled when up to speed and a separate motor
overload protection device must be supplied.
z
NOTE: Care must be taken not to damage the motor when turning the running overload class off or setting
a high value.
z
NOTE: Consult motor manufacturer data to determine the correct motor overload settings.
106
6 - PARAMETER DESCRIPTION
PFN: Starting OL
29
10
PFN: Running OL
30
10