Mitsubishi Electric FR-F740 EC Instruction Manual page 534

Special operation
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".
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.
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.)
After having decelerated to f0 − f1, compensation of f3 (f1 × Pr. 595) is made and the frequency
again accelerates to f0 + f1.
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 ac-
cording to the normal deceleration time (Pr. 8).
NOTES
When the second function signal (RT) is on, normal Acceleration/deceleration time (Pr. 7,
Pr. 8) is the same as second acceleration/deceleration time (Pr. 44, Pr. 45).
If the set frequency (f0) and traverse operation parameters (Pr. 598 to Pr. 597) are changed,
pattern operation is performed at changed f0 after the output frequency reached f0 before
change.
Output
frequency
When the output frequency exceeds Pr. 1 "Maximum frequency" or Pr. 2 "Minimum fre-
quency", the output frequency is clamped at maximum/minimum frequency while the set pat-
tern exceeds the maximum/minimum frequency.
Output
frequency
6 - 384
f0 is rewritten at this point.
Reflected on the action at this
point
Clamped by Pr. 1
Clamped by Pr. 2
Time [s]
Time [s]
Parameter