130
Motor brake and stop operation
4.10.2 DC injection brake of IPM motor control (Pr.10, Pr.11)
<IPM>
(1) Coasting frequency setting
(Pr.10)
When frequency at which coasting starts is set in
Pr.10
, output is shutoff when this frequency is reached during
deceleration and motor starts coasting. (This function is valid when
Pr. 11
= "0s")
When
Pr. 11
"0,"
Pr. 10
is always set to 0Hz.
(2) Operation time setting
(Pr. 11)
In
Pr. 11
, set the time of the DC injection brake.
When
Pr. 11
= "0", the DC injection brake is disabled. (At a stop, the motor coasts.)
When the motor does not stop due to large load moment (J), increasing the setting produces an effect.
CAUTION
Install a mechanical brake to make an emergency stop or to stay stopped for a long time.
Parameters referred to
Pr. 13 Starting frequency
Pr. 71 Applied motor
At a motor stop, DC injection brake operates to apply braking torque to the motor.
Parameter
Number
Name
Initial Value
Setting Range
Description
10
DC injection brake
operation frequency
3Hz
0 to 120Hz
Set the frequency at which the motor coasts.
11
DC injection brake
operation time
0.5s
0
DC injection brake disabled
0.1 to 10s
Set the operation time of the DC injection brake.
CAUTION
Install a mechanical brake to make an emergency stop or to stay stopped for a long time.
An IPM motor is a motor with interior permanent magnets. High voltage is generated at motor terminals while
the motor is running. Do not touch motor terminals and other parts until the motor stops to prevent an electric
shock.
Parameters referred to
Pr. 13 Starting frequency
Pr. 71 Applied motor
Pr. 178 to Pr. 189 (Input terminal function selection)
IPM motor control
IPM
IPM
IPM
Pr. 11
Operation time
DC injection brake
is exercised at 0Hz.
Time
Time
DC injection
brake
DC injection
brake
Operation example when DC injection
brake is exercised (
Pr. 11
0)
Motor coasting
Time
Time
Output
frequency
(Hz)
Output
frequency
(Hz)
Operation example when DC injection
brake is not exercised (
Pr. 11
= 0)
Pr. 10
Coasting frequency time
Summary of Contents for FR-F700PJ Series
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