Mitsubishi Electric FR-S520E Series Instruction Manual page 117

CAUTION
•The range of frequency changeable by RH (acceleration) and RM
(deceleration) is 0 to maximum frequency (Pr. 1 setting). Note that the
maximum value of set frequency is (main speed + maximum frequency).
Main speed setting
Acceleration(RH)
Deceleration(RM)
Forward rotation(STF)
•When the acceleration or deceleration signal switches on, the set frequency
varies according to the slope set in Pr. 44 "second acceleration/deceleration
time" or Pr. 45 "second deceleration time". The output frequency acceleration
and deceleration times are as set in Pr. 7 "acceleration time" and Pr. 8
"deceleration time", respectively. Therefore, the longer preset times are used
to vary the actual output frequency.
•If the start signal (STF or STR) is off, turning on the acceleration (RH) or
deceleration (RM) signal varies the preset frequency.
When selecting this function, re-set the maximum frequency according to
the machine.
♦Related parameters♦
•
RH, RM, RL signal terminal assignment ⇒
•
Maximum frequency setting ⇒ Pr. 1 "maximum frequency" (Refer to page 72.)
•
Output frequency acceleration/deceleration time ⇒
•
Time setting for acceleration/deceleration ⇒ Pr. 44 "second acceleration/deceleration time", Pr.
(Hz)
The set frequency is clamped at (main speed + Pr. 1)
Output frequency is
clamped at Pr. 1
Pr. 1
0Hz
ON
ON
CAUTION
Pr. 60 to Pr. 63 (input terminal function selection)
(Refer to page 108.)
45 "second deceleration time"
(Refer to page 76.)
107
Set frequency
Output frequency
Time
ON
Pr. 7 "acceleration time",
Pr. 8 "deceleration time" (Refer to page 76.)
Additional function
2