Parameter Description
Parameter Description
130
5.62 Triangular Wave Function (P.234~P.239) V/F
P.234 “Triangular wave function selection”
P.235 “Maximum amplitude”
P.236 “Amplitude compensation for deceleration”
P.237 “Amplitude compensation for acceleration”
P.238 “Amplitude acceleration time”
P.239 “Amplitude deceleration time”
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/0~3600s
If P.21
=0, the minimum increments of
P.238 and P.239 is 0.01 seconds.
If P.21=1, the minimum increments of
P.238 and P.239 is 0.1 seconds.
239 10s 0~360s/0~3600s
<Setting>
• The triangular wave function is effective if the value of parameter P.234 is 1 and the signal is on.
Please set 36 to any parameter: P.80~P.84, P.86, corresponding to the external terminal assigned for
TRI signal.
• If the value of the parameter is 2, it means the triangular wave function is effective all the 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. The output frequency will be limited by the maximum frequency and minimum frequency when the
triangular wave function is effective.
2. If the amplitude compensation (P.236 or P.237) is too larger, over-voltage trip and stall prevention
operation will run automatically. Thus the inverter can not run according to the triangular wave function.
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