Mitsubishi Electric Freqrol-A100 Instruction Manual page 82

Pr.
0
-
Pr. 2
3.4.2 Setting of Parameters t o Improve the Corresponding Operational Functions
Hoist or the llke requlres large start-
Ing torque
Power supply
Pushbuttan
J
0
Pr. 0 "torque boost (manual)"
Used to adjust the motor torque in the low-frequency range to
the load, thereby increasing the motor torque at the time of start.
h
Model
Output B a s e
frequency
(Hz)
frequency
7.5K and down
1 6 %
11Kand up 1 3 %
Note: 1. When the inverter-dedicated motor (constant-torque motor) is used,
change the setting of this parameter as follows:
7.5 K and down
...
4 %
11 K and up
...
2 %
2. When either of the following values is set in Pr. 0, changing the setting
of Pr. 71 "applied motor" will change the set value of this parameter
automatically:
Factory
Setting
0 to 30 %
Pr. 0 = 6%13%* (factory setting)
When the set value of Pr. 71 is changed from the general-purpose
motor selection value "0 or 2" to the constant-torque motor selec.
tion value "1 ", the Pr. 0 setting is automatically changed to
4%/2%*.
Pr. 0
=
4%12%*
When the set value of Pr. 71 is changed from the constant-torque
motor selection value "1" to the general-purpose motor selection
value "0 or 2", the Pr. 0 setting is automatically changed to
6%/3%'
(factory setting).
*: The set value chanqes with the inverter capacity (7.5K or
Setting
Range
-
. . .
I
less)/(ll K or more).
I
3
Pr. 1 "maximum frequency"
Allows the upper limit of the outputfrequency to be clamped.
The maximum setting i s within
120 Hz.
Use Pr.
1
"maximum frequency"
to set the upper limit of the output
frequency.
.
Factory Setting
I
Setting Range
120 Hz 10 to 120 Hz
3
Pr. 2 "minimum frequency"
Allows the lower limit of the output
frequency to be clamped.
By merely turning the start signal
on, the motor is run at the set
frequency.
Factory Setting
I
Setting Range
0 Hz 10 to 120 Hz
Frequency
5 V
setting slgnal (1 0V)
(20
mA)
Frequency 5 V
s e t t n g signal (10V)
(20 mA)
A
Note that without the speed command, the motor will
start at the preset frequency by merely switching on the
start signal.