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Dc Injection Brake Of Ipm Motor Control (pr.10, Pr.11)
Air-conditioning inverter.
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Motor brake and stop operation
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
4.10.2 DC injection brake of IPM motor control (Pr.10, Pr.11)
At a motor stop, DC injection brake operates to apply braking torque to the motor.
Parameter
Name
Number
DC injection brake
10
operation frequency
DC injection brake
11
operation time
(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.
Operation example when DC injection
brake is exercised (Pr. 11
(Hz)
DC injection
brake
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
130
CAUTION
Refer to page 116
Refer to page 123
Initial Value
3Hz
0.5s
0)
DC injection brake
is exercised at 0Hz.
Time
Time
Pr. 11 Operation time
CAUTION
Refer to page 116
Refer to page 123
Refer to page 83
Setting Range
0 to 120Hz
Set the frequency at which the motor coasts.
0
DC injection brake disabled
0.1 to 10s
Set the operation time of the DC injection brake.
Operation example when DC injection
brake is not exercised (Pr. 11 = 0)
(Hz)
Motor coasting
DC injection
brake
Refer to page 134
IPM
IPM
IPM
< I P M >
Description
Pr. 10
Coasting frequency time
Time
Time

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