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6–12 MM300 MOTOR MANAGEMENT SYSTEM – INSTRUCTION MANUAL
CONFIGURATION SETPOINTS CHAPTER 6: SETPOINTS
Pre-Contactor Time
Range: 0 to 60 seconds in steps of 1
Default: 0 seconds
This setpoint specifies the time after a start command before the motor is started. Most
starters do not use this delay for forced starts such as external start. This setpoint is also
used by the inverter starter and the soft start starter to set the amount of time between
powering up an inverter or soft starter and sending the ramp-up command. An audible
or other warning signal can be activated in this interval by connecting the signal to a
contact output set to the pre-contactor function.
Ramp Up Time
Range: 0 to 125 seconds in steps of 1
Default: 1 second
This setpoint specifies the time after signalling the soft starter to ramp up that the up-to-
speed feedback can be delayed without issuing a Drive Start Fail alarm.
Ramp Down Time
Range: 0 to 125 seconds in steps of 1
Default: 1 second
This setpoint specifies the time after signalling the soft starter to ramp down before the
main contactor is opened, cutting power to the starter. If speed feedback is still on when
this time expires, a Drive Stop Fail alarm is issued.
6.2.2 Current and voltage transformers
Select the Home > Setpoints > Config > CT-VT page to edit the current and voltage
transformer setpoints.
Figure 10: Typical current and voltage transformer setpoints window
The following setpoints are available to configure the current and voltage transformers.
Phase CT Type (Mandatory Setpoint)
Range: None, 1 A Secondary, 5 A Secondary, Direct Connect
Default: Direct Connect
This setpoint specifies the phase CT connection type. The “Direct Connect” value
indicates that no phase CTs are used; instead, motor phase current passes directly
through the relay. The “Direct Connect” selection should never be used where full load
current is greater than 5.0 amps.
NOTE:
If Direct Connect is selected and the FLA is set >5 A, a "FLA too high" message will be
displayed on the Status page.
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