Traverse Function (Pr. 592 To Pr. 597) - Mitsubishi Electric FR-D700 Instruction Manual

4.20.3 Traverse function (Pr. 592 to Pr. 597)

Traverse operation which varies the amplitude of the frequency in a constant cycle can be performed.
Parameter
Name
Number
Traverse function
592
selection
Maximum amplitude
593
amount
Amplitude
594 compensation amount
during deceleration
Amplitude
595 compensation amount
during acceleration
Amplitude acceleration
596
time
Amplitude deceleration
597
time
The above parameters can be set when Pr. 160 Extended function display selection = "0". (Refer to page 157)
· 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).
Output frequency(Hz)
f1
f0
f1
Pr.7
STF(STR)
ON
signal
ON
X37 signal
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).
Special operation and frequency control
Initial Setting
Value Range
0
0 1
2
10% 0 to 25%
10% 0 to 50%
10% 0 to 50%
5s 0.1 to 3600s
5s 0.1 to 3600s
Traverse operation
f2
Pr.7
f3
t2(Pr.597) t1(Pr.596)
Description
Traverse function invalid
Traverse function is valid only in the external operation mode
Traverse function is valid independently of operation mode
Amplitude amount during traverse operation
Compensation amount at the time of amplitude inversion
(acceleration → deceleration)
Compensation amount during amplitude inversion operation
(deceleration → acceleration)
Acceleration time during traverse operation
Deceleration time during traverse operation
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
Pr.8 deceleration to acceleration
(f1 × Pr. 595/100)
t1: time from acceleration during traverse
operation (Time from (f0 − f1) to (f0 + f1)
Time(s)
(Pr. 596)
t2: time from deceleration during traverse
operation (Time from (f0 + f1) to (f0 − f1)
(Pr. 597)
4
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