Mitsubishi Electric F700, Инструкция по эксплуатации

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246
Special operation and frequency control
4.20.4 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. 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).
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
u
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
u
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) .
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
o
deceleration)
595
Amplitude compensation amount
during acceleration
10% 0 to 50%
Compensation amount during
amplitude inversion operation
(deceleration
o
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 User group read selection = "0". (Refer to page 173)
f0: set frequency
f1: amplitude amount from the set
frequency
(f0
u
Pr.593 /100)
f2: compensation amount at transition from
acceleration to deceleration
(f1
u
Pr.594 /100)
f3: compensation amount at transition from
deceleration to acceleration
(f1
u
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
t1( Pr.596 ) t2( Pr.597 )
f2
f3
Pr.7
Pr.8
Pr.7
STF(STR)
signal
X37 signal
ON
ON
Traverse operation