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Additional function
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).
•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.
CAUTION
When selecting this function, re-set the maximum frequency according to
the machine.
♦Related parameters♦
• RH, RM, RL signal terminal assignment ⇒ Pr. 60 to Pr. 63 (input terminal function selection)
(Refer to page 109.)
• Maximum frequency setting ⇒ Pr. 1 "maximum frequency" (Refer to page 74.)
• Output frequency acceleration/deceleration time ⇒ Pr. 7 "acceleration time",
Pr. 8 "deceleration time" (Refer to page 78.)
• Time setting for acceleration/deceleration ⇒ Pr. 44 "second acceleration/deceleration time", Pr.
45 "second deceleration time"
(Refer to page 78.)
Deceleration(RM)
Acceleration(RH)
Forward rotation(STF)
0Hz
ON
Time
(Hz)
Main speed setting
Pr.1
The set frequency is clamped at (main speed + Pr.1)
Output frequency is
clamped at Pr.1
Set frequency
Output frequency
ON
ON