Mitsubishi Electric FR-D700 Instruction Manual page 226

Special operation and frequency control
REMARKS
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).
Output frequency(Hz)
f1
f0
f1
Output frequency(Hz)
Pr.1
f0
Pr.2
Output frequency(Hz)
S-pattern acceleration
f0
STF(STR)
ON
signal
RH signal
ON
Output frequency(Hz)
Stall prevention operation
f1
f0
f1
Stall prevention operation
NOTE
When the value of amplitude inversion compensation amount (Pr. 594, Pr. 595) is too large, pattern operation as set is
not performed due to overvoltage shut-off and stall prevention.
Changing the terminal assignment using Pr. 178 to Pr. 182 (input terminal function selection) may affect the other functions.
Please make setting after confirming the function of each terminal.
Parameters referred to
Pr. 1 Maximum frequency
Pr. 7 Acceleration time
Pr. 29 Acceleration/deceleration pattern selection
(input terminal function selection)
Pr. 178 to Pr. 182
222
f0 is rewritten at this point.
Reflected on the action
at this point
f1
f0
f1
Time(s)
Clamped by Pr.1
f1
f1
Clamped by Pr.2
Time(s)
S-pattern
deceleration
f1
f1
Time(s)
Decelerate as
set in Pr. 8
Accelerate as set in Pr. 7
Time(s)
Refer to page 90
Refer to page 91
Refer to page 107
If the set frequency (f0) and traverse operation parameters (Pr. 593 to Pr.
597) are changed, pattern operation is performed at changed f0 after
the output frequency reached f0 before change.
When the output frequency exceeds Pr. 1 Maximum frequency or Pr. 2
Minimum frequency, the output frequency is clamped at maximum/
minimum frequency while the set pattern exceeds the maximum/
minimum frequency.
When the traverse function and S-pattern acceleration/deceleration (Pr.
29 ≠ 0) are selected, S-pattern acceleration/deceleration is performed
only in the areas where operation is performed in normal Acceleration
and deceleration time (Pr. 7, Pr. 8). For acceleration/deceleration during
traverse operation, linear acceleration/deceleration is made.
When stall prevention is activated during traverse operation, traverse
operation is stopped and normal operation is performed. When stall
prevention operation ends, the motor accelerates/decelerates to f0 in
normal acceleration/deceleration time (Pr. 7, Pr. 8). After the output
frequency reaches f0, traverse operation is again performed.
Refer to page 132