101
Motor brake and stop operation
4
PA
R
A
M
E
T
E
R
S
(3) Operation voltage (torque) setting
(Pr. 12)
Use
Pr. 12
to set the percentage to the power supply voltage.
When
Pr. 12
= "0%", the DC injection brake is disabled. (At a stop, the motor coasts.)
When using the constant-torque motor (SF-JRCA) and energy saving motor (SF-HR, SF-HRCA), change the
Pr. 12
setting as follows.
SF-JRCA: 00083 or less ...4%, 00126 to 01160...2%
SF-HR, SF-HRCA: 00083 or less...4%, 00126 and 00170...3%, 00250 to 01160...2% (00620...1.5%)
REMARKS
For the 00126 and 00170, when the
Pr. 12
setting is as below, changing the
Pr. 71 Applied motor
setting changes the
Pr. 12
setting automatically, it is not necessary to change the
Pr. 12
setting.
(a)When
Pr. 12
is 4% (initial value)
The
Pr. 12
setting is automatically changed to 2% if the
Pr. 71
value is changed from the value selecting the standard motor
(0, 2) to the value selecting the constant motor (1).
(b)When
Pr. 12
is 2%
The
Pr. 12
setting is automatically changed to 4% if the
Pr. 71
value is changed from the value selecting the constant motor
(1) to the value selecting the standard motor (0, 2).
Even if the
Pr. 12
setting is increased, braking torque is limited so that the output current is within the rated inverter current.
CAUTION
As stop holding torque is not produced, install a mechanical brake.
i
Parameters referred to
i
Pr. 13 Starting frequency
Refer to page 92
Pr. 71 Applied motor
Refer to page 99
Summary of Contents for F700
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