SINUS/ISD
15P0082B8
USER MANUAL
6 - 33/82
6.4.1.20
INJ BRAKING
The injection braking block provides a
method of stopping spinning induction
motors without returning the kinetic
energy of the motor and load back in to
the dc link of the inverter. This is
achieved by running the motor highly
inefficiently so that all the energy stored
in the load is dissipated in the motor.
Thus, high inertia loads can be stopped
without the need for an external
dynamic braking resistor.
MMI Menu Map
1
SETUP PARAMETERS
2
FUNCTION BLOCKS
3
MOTOR CONTROL
4
INJ BRAKING
INJ DEFLUX TIME
INJ FREQUENCY
INJ I-LIM LEVEL
INJ DC PULSE
INJ FINAL DC
INJ DC LEVEL
INJ TIMEOUT
INJ BASE VOLTS
INJ ACTIVE
INJ BRAKING
INJ BRAKING
ACTIVE [583] ––FALSE
0.5 s – [710] DEFLUX TIME
––
9.0 Hz –– [577] FREQUENCY
––
100.00
%
–– [578] I-LIM LEVEL
––
2.0 s –– [579] DC PULSE
––
1.0 s –– [580] FINAL DC PULSE
––
5.00 % –– [581] DC LEVEL
––
600.0 s –– [582] TIMEOUT
100.00 % –– [739] BASE VOLTS
––
Parameter Descriptions
Parameter Descriptions
DEFLUX TIME
Range: 0.1 to 20.0 s
Determines the time in which the inverter defluxes the motor prior injection braking.
FREQUENCY
Range: 1.0 to 480.0 Hz
Determines the maximum frequency applied to the motor for the low frequency
injection braking mode. It is also clamped internally so as never to exceed 50% of
base speed value.
I-LIM LEVEL
Range: 50.00 to 150.00 %
Determines the level of motor current flowing during low frequency injection braking.
DC PULSE
Range: 0.0 to 100.0 s
Determines the duration of the dc pulse applied to the motor when injection braking is
required for motor speeds below 20% of base speed. The actual dc pulse time applied
to the motor is dependent on the ratio of initial motor speed to 20% of base speed.
FINAL DC PULSE
Range: 0.0 to 10.0 s
Determines the duration of the final dc holding pulse applied to the motor after either
low frequency injection braking or timed dc pulse.
DC LEVEL
Range: 0.00 to 25.00 %
Determines the level of dc pulse applied to the motor during either the timed or final dc
pulse.
TIMEOUT
Range: 0.0 to 600.0 s
Determines the maximum amount of time the sequence is allowed to remain in the low
frequency injection braking state.
BASE VOLTS
Range: 0.00 to 115.47 %
Determines the maximum volts at base speed applied to the motor during injection
braking.
ACTIVE
Range: FALSE / TRUE
Indicates the state of the inverter. TRUE when injection braking.
Summary of Contents for SINUS/ISD 200 S-0.75
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