53
MAXIMUM DC BRAKE VOLTAGE
MODEL M1100
MODEL M1100MODEL M1100
MODEL M1100 MODEL M1200
MODEL M1200MODEL M1200
MODEL M1200 MODEL M1400
MODEL M1400MODEL M1400
MODEL M1400 MODEL M1500
MODEL M1500MODEL M1500
MODEL M1500
240 / 120 Vac
240 / 120 Vac240 / 120 Vac
240 / 120 Vac 240 / 200 Vac
240 / 200 Vac240 / 200 Vac
240 / 200 Vac 480 / 400 Vac
480 / 400 Vac480 / 400 Vac
480 / 400 Vac 590 / 480 Vac
590 / 480 Vac590 / 480 Vac
590 / 480 Vac
24 VOLTS 24 VOLTS 48 VOLTS 59 VOLTS
NOTE: If the drive is equipped with the High Frequency Output option, the
range of adjustment will be 1.00 - 650.0 Hz.
12 DC BRAKE (DC BRAKE VOLTAGE)
DC braking creates a braking torque by injecting DC voltage into the motor. This
parameter sets the magnitude of that DC voltage. The point at which the drive
applies DC braking to the motor depends on which STOP mode is programmed
(either COAST or RAMP, see Parameter 26 - STOP).
If the drive is set to COAST, DC braking is activated when the stop command is
given. In this case, DC braking helps decelerate the motor. This is useful in
applications where a quick deceleration is desired on a load that would normally
take a long time to coast to a stop.
If the drive is set to RAMP, DC braking is activated when the output frequency
reaches 0 Hz. In this case, the drive decelerates the load to a near stop and then DC
braking is used to stop and hold the motor. This is useful in applications where the
load needs to be stopped in a certain position. Similar applications with high-
inertia loads utilize both dynamic braking and DC braking. The dynamic braking
allows the high-inertia load to be decelerated quickly, while the DC braking stops
the load in the desired position.
Due to heat generated in the motor, DC braking should only be used in applications
where the load is stopped infrequently. In high duty-cycle applications, dynamic
braking is recommended because the heat is dissipated through external resistor
banks, rather than in the motor. When used, DC BRAKE should be set to the
lowest voltage that provides satisfactory operation in order to minimize motor
heating. The maximum voltage available depends on the voltage rating of the drive.
Refer to the table below:
WARNING!
Consult motor manufacturer before operating motor above rated frequency.
Overspeeding the motor and/or driven equipment can cause damage to equipment
and injury to personnel!
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