6. Control Functions and Parameter Settings
6-27
Block-C parameters (Extended function constants) list
Application
No.
Parameter
Unit
Default
Min.
Max.
Function
ST
V/f VEC PM
C20 – Start interlock
0
Start/stop frequency
(speed)
%
0.0
0.0
20.0
The motor will stop when below this
frequency setting.
1
Start/stop frequency
(speed) hysteresis
%
1.0
0.0
20.0
2
Interlock frequency
(speed)
%
0.0
0.0
20.0
The motor will not start when the
speed or frequency setting is lower
than this frequency.
When C20-0=0, the setting start/stop
will not operate.
When C20-2=0, the setting interlock
will not operate.
3
RUN delay timer
sec
0.00
0.00
10.00
Delays F RUN or R RUN operation
C21 – Retry/pick-up
0
Number of retries
0.
0.
10.
No of re-start tries after a fault
1
Retry wait time
sec
5.
1.
30.
Delay time between tries
2
Pick-up wait time
sec
2.
1.
10.
Delay time before pick-up
3
Pick-up current limit
value
%
100.
50.
300.
Do not set a value less than the
excitation current.
C22 – Overload
0
Overload setting
%
100.
50.
105.
Note that when this parameter is
changed, Parameters C22-1 and
C22-2 will automatically be adjusted
to the value of this setting.
1
0Hz overload
%
100.
20.
105.
The maximum value is as set on
C22-2.
2
0.7Base freq.overload
%
100.
50.
105.
The minimum value is as set on
C22-1.
4
Motor loss braking
setting
%
50.0
0.0
70.0
This function is valid when control
mode selection is C30=1,2 and DBR
option selection is C31-0=3,4
C22-0~2: The max. value differs according to the load characteristic selection (C30-0).
When C30-0=2 (when variable torque is selected), these max. value is 100.
C23 – Start/Stop frequency-Overload (Dual drive)
0
Start frequency
Hz
1.0
0.1
60.0
1
Stop frequency
(DC Brake start)
Hz
1.0
0.1
60.0
2
Overload setting
%
100.
50.
105.
Note that when this parameter is
changed, Parameters C23-3 and
C22-4 will automatically be adjusted
to the value of this setting.
3
0Hz overload
%
100.
20.
105.
The maximum value is as set on
C22-4.
4
0.7Base freq.overload
%
100.
50.
105.
The minimum value is as set on
C22-3.