Traverse Function - Mitsubishi Electric FR-A820-00046 Instruction Manual

Parameters
5.14.7

Traverse function

The traverse operation, which oscillates the frequency at a constant cycle, is available.
Pr.
592
A300
593
A301
594
A302
595
A303
596
A304
597
A305
● Setting Pr. 592 "Traverse function selection" = "1 or 2" will enable the traverse function.
● Assigning the Traverse function selection (X37) signal to the input terminal will enable the traverse
function only when the X37 signal is ON. (When the X37 signal is not assigned, the traverse
function is always available.) To input the X37 signal, set "37" in any of Pr.178 to Pr.189 (input
terminal function selection) to assign the function to a terminal.
Output frequency (Hz)
STF(STR)
signal
X37 signal
Fig. 5-244:
● The motor accelerates to the set frequency f0 according to the normal Pr. 7 "Acceleration time" at
turn ON of the start command (STF or STR).
● When the output frequency reaches f0 and the X37 signal turns ON, the inverter begins traverse
operation and accelerates to f0 + f1. The acceleration time at this time is according to the Pr. 596
setting. (If the X37 signal turns ON before the output frequency reaches f0, traverse operation
begins after the output frequency reaches f0.)
● After the inverter accelerates to f0 + f1, this is compensated with f2 (f1 × Pr. 594), and the inverter
decelerates to f0 - f1. The deceleration time at this time is according to the Pr. 597 setting.
● After the inverter decelerates to f0 - f1, this is compensated with f3 (f1 × Pr. 595), and the inverter
accelerates again to f0 + f1.
FR-A800
Name
Traverse function selection
Maximum amplitude
amount
Amplitude compensation
amount during
deceleration
Amplitude compensation
amount during
acceleration
Amplitude acceleration
time
Amplitude deceleration
time
Traverse operation
f2
f1
f0
f1
t2
Pr. 7
Pr. 597
ON
ON
Traverse function
Initial Setting
Description
value range
0 Traverse function invalid
Traverse function valid only in External operation
1
0 mode
Traverse function valid regardless of the operation
2
mode
10% 0 to 25% Level of amplitude during traverse operation
Compensation amount during amplitude inversion
10% 0 to 50%
(from acceleration to deceleration)
Compensation amount during amplitude inversion
10% 0 to 50%
(from deceleration to acceleration)
5 s 0.1 to 3600 s Time period of acceleration during traverse operation
5 s 0.1 to 3600 s Time period of deceleration during traverse operation
Pr. 7
f3
Pr. 8
t1
Pr. 596
Time(s)
(A) Application parameters
f0: set frequency
f1: amplitude amount from the set frequency
(f0 x Pr. 593/100)
f2: compensation amount at transition from
acceleration to deceleration
(f1 x Pr. 594/100)
f3: compensation amount at transition from
deceleration to acceleration
(f1 x Pr. 595/100)
t1: time from acceleration during traverse
operation (Time from (f0 – f1) to (f0 + f1))
(Pr. 596)
t2: time from deceleration during traverse
operation (Time from (f0 + f1) to (f0 – f1))
(Pr. 597)
I002681E
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