Mitsubishi Electric MEsoftstart/I00, Users, Installation & Instruction Manual

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70 Basic operation – Pro models
Parameters Description - with options or range
Ramp Up time
This parameter defines the period during which the motor voltage, ramps-up.
The parameter is adjustable between:
[10 seconds – 60 seconds or the Maximum Ramp up time parameter].
Note: The Ramp-up time is limited when Normal duty is selected.
Note: The Ramp-up time can be extended by the current limiting functionality of the soft starter. In this
case the Ramp-up time will be made up of the total time where the soft starter is ramping-up the
output voltage. This ramp-up process will be cancelled if the Maximum Ramp-up time is exceeded.
Maximum Starting Time This parameter defines the maximum period during which the motor may attempt to start within. The
parameter is adjustable between:
[10 seconds – 60 seconds] for Normal Duty
[10 seconds – 1800 seconds] for Heavy Duty
This time represents the maximum possible time that the motor could start in, which includes current
limited delays incurred during the motor starting phase. If the motor has not achieved a Running
status by the end of this time, the soft starter shall trip and display a fault.
Note: This parameter cannot be set to a value less than the “Ramp-up time” above.
Ensure to allow enough time to soft-start the motor within the limitation that is set. If the
time is set too short, the soft start ramp will be aborted before reaching running speed.
Basic Setup – Stop Ramp
Parameters that specify how the motor is stopped, are configured under this group:
Parameters Description - with options or range
Stop Type This parameter defines the 3 different stopping types that may be configured for the motor. They are:
[Coasting, Ramp-down, Pedestal]
These parameters can be configured in the Advanced Setup (refer paragraph6.4.4).
Coasting:
In this mode, the Firing angle of the SCRs are instantly set to zero and the motor is allowed to coast to
a stop.