Lenze MC3000 Series Drives - Manual (Page 15)

RG-MCMET 12
N2 Points
Point Description
3-03: Normal Acceleration
This point sets the time that it will take for the drive to ramp up the motor from 0.0Hz to the
value set in Parameter 18 (Base Frequency). The maximum value for this point is 3600.0
seconds. The minimum value is either 0.1 sec or 0.3 sec depending on the horsepower of
the drive. For the actual minimum boundary, refer to the MC3000 Installation and Operation
Manual (M301).
When this object is overridden, the override value is stored in a temporary variable and
not in the drive’s memory. If this parameter is viewed on the drive itself via program
mode while it is being overridden, the value that is displayed will not reflect the override
value but rather the value that was last stored into the drive’s memory via programming
mode. Example: if the initial value of Parameter 8 (ACCEL), is 30.0 seconds and this object
is overridden to be 15.0 seconds, the serial link will report the 15.0 second value and
the drive response will be based on the 15.0 second value but in programming mode,
Parameter 8 will still display the original value of 30.0 seconds.
3-04: Normal Deceleration
This point sets the time that it will take for the drive to ramp down the motor from the
value set in Parameter 18 (Base Frequency) to 0.0Hz. The maximum value for this point
is 3600.0 seconds. The minimum value is between 0.1 sec and 2.0 sec depending on the
voltage rating and horsepower of the drive as well as the presence of a dynamic brake.
For the actual minimum boundary, refer to the MC3000 Installation and Operation Manual
(M301).
The Normal Deceleration time is only used when Parameter 26 (Stop) is set to RAMP.
When this object is overridden, the override value is stored in a temporary variable and
not into the drive’s memory. If this parameter is viewed on the drive itself via program
mode while it is being overridden, the value that is displayed will not reflect the override
value but rather the value that was last stored into the drive’s memory via programming
mode. Example: if the initial value of Parameter 9 (DECEL) is 30.0 seconds and this object
is overridden to be 15.0 seconds, the serial link will report the 15.0 second value and
the drive response will be based on the 15.0 second value but in programming mode,
Parameter 9 will still display the original value of 30.0 seconds.
3-05: Local PID Command
This point indicates the PID Setpoint that is used when the drive is running in LOCAL or
SERIAL modes. The PID Setpoint is the number that the drive is attempting to match with
the PID Feedback value. Refer to the MC3000 Installation and Operation Manual (M301)
for more details on PID functionality.