221
Special operation and frequency control
4.20.3 Traverse function (Pr. 592 to Pr. 597)
· When "1" or "2" is set in
Pr. 592 Traverse function selection
, turning on the traverse operation signal (X37) makes the
traverse function valid.
· Set "37" in any of
Pr. 178 to Pr. 182 Input terminal function selection
and assign the X37 signal to the external terminal.
When the X37 signal is not assigned to the input terminal, the traverse function is always valid (X37-ON).
1) When the starting command (STF or STR) is switched on, the output frequency accelerates to the set frequency f0
according to the normal
Pr. 7 Acceleration time
.
2) When the output frequency reaches f0, traverse operation can be started by switching the X37 signal on, then the
frequency accelerates to f0 + f1. (The acceleration time at this time depends on the
Pr. 596
setting.)
3) After having accelerated to f0 + f1, compensation of f2 (f1
×
Pr. 594
) is made and the frequency decreases to f0-f1.
(The deceleration time at this time depends on the
Pr. 597
setting.)
4) After having decelerated to f0
−
f1, compensation of f3 (f1
×
Pr. 595
) is made and the frequency again accelerates to
f0 + f1.
5) If the X37 signal is turned off during traverse operation, the frequency accelerates/decelerates to f0 according to the
normal acceleration/deceleration time
(Pr. 7, Pr. 8)
. If the start command (STF or STR) is turned off during traverse
operation, the frequency decelerates to a stop according to the normal deceleration time
(Pr. 8)
.
Traverse operation which varies the amplitude of the frequency in a constant cycle can be performed.
Parameter
Number
Name
Initial
Value
Setting
Range
Description
592
Traverse function
selection
0
0
Traverse function invalid
1
Traverse function is valid only in the external operation mode
2
Traverse function is valid independently of operation mode
593
Maximum amplitude
amount
10%
0 to 25%
Amplitude amount during traverse operation
594
Amplitude
compensation amount
during deceleration
10%
0 to 50%
Compensation amount at the time of amplitude inversion
(acceleration
→
deceleration)
595
Amplitude
compensation amount
during acceleration
10%
0 to 50%
Compensation amount during amplitude inversion operation
(deceleration
→
acceleration)
596
Amplitude acceleration
time
5s
0.1 to 3600s Acceleration time during traverse operation
597
Amplitude deceleration
time
5s
0.1 to 3600s Deceleration time during traverse operation
The above parameters can be set when
Pr. 160 Extended function display selection
= "0".
f0: set frequency
f1: amplitude amount from the set
frequency
(f0
×
Pr. 593
/100)
f2: compensation amount at transition from
acceleration to deceleration
(f1
×
Pr. 594
/100)
f3: compensation amount at transition from
deceleration to acceleration
(f1
×
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)
f0
Output frequency(Hz)
Time(s)
f1
f1
t2(
Pr.597
)
t1(
Pr.596
)
f2
f3
Pr.7
Pr.8
Pr.7
STF(STR)
signal
X37 signal
ON
ON
Traverse operation
Summary of Contents for FR-D700 Series
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