BENSHAW RSi GM2 Series - Frequency Limit; Frequency Limit Using Maximum Frequency and Start Frequency; Frequency Limit Using Upper and Lower Limit Frequency Values

Learning Basic Features
85
Lea
rni
890054-00-00
GM2 Series VFD
Frequency Limit
The inverter output frequency can be limited by setting frequency limit parameters. These include
start frequency, maximum frequency, upper and lower frequency limits.
Frequency Limit Using Maximum Frequency and Start
Frequency
Group
Code
Name
Setting
Setting Range
Unit
dr
19
Start frequency
0.50
0.01–10.00
Hz
20
Maximum
frequency
60.00
40.00–400.00
Hz
Frequency Limit Using Maximum Frequency and Start Frequency - Setting Details
Code and
Features
Description
dr.19
Start Freq
Set the lower limit value for speed unit parameters that are expressed in
Hz or rpm. If an input frequency is lower than the start frequency, the
parameter value will be 0.00.
dr.20
Max Freq
Set upper and lower frequency limits. All frequency selections are
restricted to frequencies from within the upper and lower limits. This
restriction also applies when you in input a frequency reference using the
keypad.
Frequency Limit Using Upper and Lower Limit Frequency Values
Group
Code
Name
Setting
Setting Range
Unit
Ad
24
Frequency limit
0
No
0–1
-
25
Frequency lower
limit value
0.50
0.0–maximum
frequency
Hz
26
Frequency upper
limit value
Maximum
frequency
Lower limit–
maximum
frequency
Hz
Frequency Limit Using Upper and Lower Limit Frequencies - Setting Details
Code and
Features
Description
Ad.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 minimum and
below the maximum frequency to operate within the specified
range.
Ad.25 Freq Limit Lo
Ad.26 Freq Limit Hi
Set the lower and upper limits of the inverter output frequencies.
The base frequency (dr.18) still remains as the output frequency at
motor rated voltage.