Chapter 12 Description of Parameter Settings
MS300
(High Speed Model)
12-07-1
07 Special Parameters
This parameter can be set during operation.
Software Brake Level
Factory
Setting:
Settings 230 V: 350.0~450.0 VDC 370.0
460 V: 700.0~900.0 VDC 740.0
This parameter sets the level of brake transistor which refers to the DC-BUS voltage. Users can
choose suitable brake resistor to achieve the best deceleration. Refer to Chapter 7 “Optional
Accessories” for the information of brake resistor.
DC Brake Current Level
Factory Setting: 0
Settings 0~100 %
This parameter sets the level of DC brake current outputted to the motor during start-up and
stopping. When setting the percentage of DC brake current, the rated current is regarded as
100%. Be sure to start with a low DC brake current level, and increase slowly until proper brake
torque has been attained. However, the DC brake current can NOT exceed the rated current to
avoid burning the motor. Therefore, DO NOT use the DC brake as mechanical retention,
otherwise it may cause injury accident.
DC Brake Time at Startup
Factory Setting: 0.0
Settings 0.0~60.0 sec.
The motor may be in rotation status due to external force or the inertia itself. If the drive is used
with the motor at this moment, it may cause motor damage or drive protection due to over current.
This parameter can output DC current generating torque to force the motor stop before motor
operation to get a stable start. This parameter determines the duration of the DC brake current
when the drive start-up. When set to 0.0, the DC brake is invalid at startup.
DC Brake Time at Stop
Factory Setting: 0.0
Settings 0.0~60.0 sec.
The motor may be in rotation status after the drive stops outputting due to external force or inertia
itself, and cannot stop completely. This parameter can output DC current generating torque to
force the drive stop after the drive stops outputting to make sure that the motor stops.
This parameter determines the duration of the DC Brake current during brakes. To enable DC
brake at stop, this function will be valid when Pr. 00-22 (stop method) is set to 0 (ramp to stop).
Related parameters: Pr. 00-22 Stop Method, Pr. 07-04 DC Brake Start Frequency.
Содержание VFD11AMS21AFSHA
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