BENSHAW RSi H2 Series - Frequency Limits - Upper;Lower Limit Frequency

Parameter Descriptions
147
890053-00-02
Note
Dwell operation does not function when:
• Dwell operation time is set to 0 sec.
• Re-acceleration is attempted from stop or from a deceleration. Only the first
acceleration dwell operation is valid through the complete process.
[Acceleration dwell operation]
Deceleration dwell operation is carried out only when a stop command is issued, and the
decelerating frequency passes through the dwell frequency. Dwell is not performed during a
deceleration based on a frequency (speed reference) change. This is not considered a
deceleration based on a stop operation.
[Deceleration dwell operation]
When a dwell operation is carried out for lift - type loads with mechanical brakes, motors can
be damaged, or their life cycle reduced due to higher currents in the motor during the time the
mechanical brake is applied.
5.4.7 ADV-24 Frequency Limits - Upper/Lower Limit Frequency
Group
Code
Name
LCD Display
Parameter Setting
Setting Range
Unit
ADV
24
Frequency limit
Freq Limit
0
No
0–1
-
25
Frequency lower
limit value
Freq Limit Lo
0.50
0.0–maximum
frequency
Hz
26
Frequency upper
limit value
Freq Limit Hi
Maximum
frequency
min–max
frequency
Hz
Frequency Limit Using Upper and Lower Limit Frequencies - Setting Details
Code
Description
ADV-24
Freq Limit
When set to ‘1 (Yes)’ frequency limits can be applied to the output of the
inverter. Frequencies can be set above the lower limit frequency (ADV-25) and
below the upper limit frequency (ADV-26). Operation is within the specified range.
ADV-25
Freq Limit Lo
ADV-26
Freq Limit Hi
Set the lower and upper limits of the output frequency. Speed unit parameters are
expressed in Hz or rpm based on DRV-21 setting except for the base frequency
(MOT-02). The Base Frequency (MOT-02) remains the output frequency at motor
rated voltage.