PROGRAMMABLE PARAMETERS
710-14888-00C EMX4i User Manual
71
1D –
Locked Rotor Time
Range:
0:01 - 2:00 (minutes:seconds)
Default:
10 seconds
Description:
Sets the maximum length of time the motor can sustain locked
rotor current from cold before reaching its maximum
temperature. Set according to the motor datasheet.
1E –
Locked Rotor Current
Range:
400% - 1200% FLC
Default:
600%
Description:
Sets the locked rotor current of the connected motor, as a
percentage of full load current. Set according to the motor
datasheet.
1F –
Motor Service Factor
Range:
100% - 130%
Default:
105%
Description:
Sets the motor service factor used by the thermal model. If the
motor runs at full load current, it will reach 100%. Set according
to the motor datasheet.
NOTE
Parameters 1D, 1E and 1F determine the trip current for motor overload
protection. The default settings of parameters 1D, 1E and 1F provide Motor
Overload Protection: Class 10, Trip Current 105% of FLA (full load
amperage) or equivalent.
1G –
Reserved
Description:
This parameter is reserved for future use.
9.6
2 Motor Start/Stop
2A –
Start Mode
Options:
Constant Current (default)
Adaptive Control
Description:
Selects the soft start mode.
NOTE
The EMX4i will apply the current limit on all soft starts, including adaptive
control. If the current limit is too low or the start ramp time (parameter 2B)
is too short, the motor may not start successfully.
2B –
Start Ramp Time
Range:
0:01 - 3:00 (minutes:seconds)
Default:
10 seconds
Description:
Sets the total start time for an Adaptive Control start or the
ramp time for current ramp starting (from the initial current to
the current limit).
