Parameter Description
Parameters
157
Parameter Factory setting
Setting range
Remarks
234
0
0~2
---
235
10%
0~25%
---
236
10%
0~50%
---
237
10%
0~50%
---
238
10s
0~360s/0~3600 s When P.21=0, the unit of P.238
and P.239 is 0.01s.
When P.21=1, the unit of P.238
and P.239 is 0.1s.
239
10s
0~360s/0~3600 s
<Setting>
• If P.234 “Triangular wave function selection” is “1” and triangular wave operation signal (TRI)
is turned on, triangular wave function will be valid. Set any parameter
in P.80~P.84, P.86, P.126, P.550 “Input terminal selection function” to “36” and then assign
the TRI signal for the external terminal.
• If P.234 “triangular wave function selection” is equal to “2,” the triangular wave function is
effective at any given time.
f0
f1
f1
f2
f3
triangular wave
operation
STF
TRI
time
P.239
P.238
P.7
P.7
P.8
f0
﹕
Setting value of frequency
f1
﹕
Generated amplitude for
setting frequency
（
f0 ×P . 235
）
f2
﹕
Compensation from acceleration to
deceleration
（
f1 ×P . 236
）
f3
﹕
Compensation from deceleration to
acceleration
（
f1 ×P . 237
）
Output
frequency
Note: 1. During the movement of the triangular wave, the output frequency is limited by the maximum and
the minimum frequency.
2. If the amplitude compensation, i.e., P.236 and P.237, is too big, over-voltage will be tripped off and
the stall prevention action will be executed automatically. Consequently, the set method will not
be carried out.
3. This function is only valid under the V/F mode; i.e., it is effective when P.300=0.
5.6
5
DC Brake Function before Starting (P.242~P.244)
P.242 “DC injection brake function
before starting selection”
P.243 “DC injection brake time before
starting”
P.244 “DC injection brake voltage
before starting”
Related parameters
P.13
“
Starting frequency
”
