Traverse Function (Pr. 592 To Pr. 597) - Mitsubishi Electric FR-F740-00023-EC Instruction Manual

Special operation and frequency control

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

Traverse operation which varies the amplitude of the frequency in a constant cycle can be performed.
Pr. 591
page 203
Pr. 611 Parameter
page 114
Number
592 Traverse function selection
593 Maximum amplitude amount
Amplitude compensation amount
594
during deceleration
Amplitude compensation amount
595
during acceleration
596 Amplitude acceleration time
597 Amplitude deceleration time
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 146)
· 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. 189 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)
f0
Pr.7
STF(STR)
ON
signal
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 on 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).
212
Name
Traverse operation
f2
f1
f1
f3
t1(Pr.596) t2(Pr.597)
ON
Initial
Setting Range
Value
0
1
0
2
10% 0 to 25%
10% 0 to 50%
10% 0 to 50%
5s 0.1 to 3600s
5s 0.1 to 3600s
f0: set frequency
f1: amplitude amount from the set
f2: compensation amount at transition from
Pr.7
f3: compensation amount at transition from
Pr.8
t1: time from acceleration during traverse
Time(s)
t2: time from deceleration during traverse
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
frequency
(f0 × Pr.593/100)
acceleration to deceleration
(f1 × Pr.594/100)
deceleration to acceleration
(f1 × Pr.595/100)
operation (Time from (f0 − f1) to (f0 + f1)
(Pr. 596)
operation (Time from (f0 + f1) to (f0 − f1)
(Pr. 597)