Honeywell VFD CORE

CHAPTER 12: DESCRIPTION OF PARAMETER SETTINGS
197 63-4528—04
07 Special ParametersRepartir ~ The parameter can be set during operation
• This parameter sets the DC-bus voltage at which the brake chopper is activated. Users can choose the suitable brake resistor
to have the best deceleration. Refer to Chapter 7 Accessories for the information of the brake resistor
• It is only valid for the models below 30kW of 460 series and 22kW of 230 series.
• This parameter sets the level of DC Brake Current output to the motor during start-up and stopping. When setting DC Brake
Current, the Rated Current is regarded as 100%. It is recommended to start with a low DC Brake Current Level and then
increase until proper holding torque has been attained.
• The motor may be in the rotation status due to external force or itself inertia. 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 be used to output DC current before
motor operation to stop the motor and get a stable start. This parameter determines the duration of the DC Brake current after
a RUN command. When it is set to 0.0, it is invalid.
• The motor may be in the rotation status after drive stops outputting due to external force or self inertia and can’t stop
accurately. This parameter can output DC current to force the motor to stop after drive stops.
• This parameter determines the duration of the DC Brake current during stopping. To DC brake at stop, this function will be
valid when Pr.00-16 is set to 0 or 1. When setting to 0.0, it is invalid
• Related parameters: Pr.00-16 Stop Method, Pr.07-04 Start-point for DC Brake
• This parameter determines the frequency when DC Brake will begin during deceleration. When this setting is less than start
frequency (Pr.01-09), the start-point for DC brake will start from the min. frequency.
a
07 - 00 Software Brake Level
Factory Setting: 380.0/760.0
Settings 230V models: 350.0~450.0Vdc
460V models: 700.0~900.0Vdc
a
07 - 01 DC Brake Current Level
Factory Setting: 0
Settings 0~100%
a
07 - 02 DC Brake Time at Start-up
Factory Setting: 0.0
Settings 0.00~60.0 seconds
a
07 - 03 DC Brake Time at Stop
Factory Setting: 0.00
Settings 0.00~60.00 seconds
a
07 - 04 Start-Point for DC Brake
Factory Setting: 0.00
Settings 0.00~600.00Hz