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(Note 1)
(Note 2)
(Note 3)
(Note 4)
(Note 5)
(Note 6)
The output frequency display starts counting at O.SHz.
When the frequency reference signal becomes more than 3Hz, the inverter
wilt start running, and accelerates in the
pre~set
acceleration rate from 0 to
3Hz.
When the frequency reference signal level becomes less than 3Hz, the
inverter decelerates in the
pre~set
deceleration time from 3 to 0 Hz. While
"LS" is displayed, the output of the inverter is not displayed. Only at the
start of the operation will the output be displayed from a.5Hz to 3Hz.
The output frequency must be at 3Hz or more. A set value of less than 3Hz
is not available.
The operating frequency (output frequency of the inverter) changes in
accordance with the previously pre-set acceleration/deceleration times.
The rotational speed of the motor also varies in relation with the
changes of the operating frequency.
Confirm no excessive vibration of the motor and its mounting base by
slowly accelerating and decelerating.
Operation patterns of the inverter.
Start signal "ST'
0/11
OM
-
-r~~~~O:':'~~~:
Operati ng signal "RU N"
_-;I--'~~;""'""'IL.~-L.-
___ -_-
Reverse rotation signal "REVS"
Normal
Rotation speed of motor
I-->'---.-L-",",f:-l-:---
free run - stop Start
C
When the "ST" signal turns off, the motor coast stops.
o
The inverter should be restarted after a coast stop only when the motor
has come to a stop.
e
If during a coast stop (the motor is rotating), and the inverter is restarted
into a rotating motor the inverter may activate the overcurrent
protection.
"ST''---.J~-6'''''------
"RUN'C'
~::~;~~
"REVS":
Normal rotation
Rotation speed of motor
i-----:,Ji-.,--r-i't---
Time
Reverse rotation
deceleration - stop
Start
e
If "RUN" signal is switched to stop (or opened) while the "ST" signal
is "ON", the motor decelerates and stops. (controlled stop).
o
If the deceleration time is too short, the overvoltage protection may
be
activated due to motor regeneration.
10-4
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