Special Parameters - Delta C2000 Series User Manual

Chapter 12 Description of Parameter SettingsC2000

07 Special Parameters

Software Brake Level

Settings
 Sets the brake transistor level for the DC BUS voltage. Choose a suitable brake resistor to
achieve the best deceleration. Refer to Chapter 7 Optional Accessories for information about
brake resistors.
 This parameter is only valid for the models below 30kW of 460 series and 22kW of 230 series.
DC Brake Current Level

Settings
 Sets the level of the DC brake current output to the motor during start-up and stop. When you set
the DC brake current percentage, the rated current is regarded as 100%. Start with a low DC
brake current level, and increase it slowly until the proper brake torque is reached. However, to
avoid burning the motor, the DC brake current can NOT exceed the rated current. Therefore, DO
NOT use the DC brake for mechanical retention, otherwise injury or accident may occur.
 The PM has the magnetic field itself, using the DC brake may possibly cause the motor run in a
reverse direction, therefore, it is not recommended to use DC brake for PM.
DC Brake Time at RUN

Settings
 The motor may continue rotating after the drive stops output due to external forces or the inertia
of the motor itself. If you use the drive with the motor rotating, it may cause motor damage or
trigger drive protection due to over-current. This parameter outputs DC current, generating torque
to force the motor stop to get a stable start before motor operation. This parameter determines
the duration of the DC brake current output to the motor when the drive starts up. Setting this
parameter to 0.0 disables the DC brake at start-up.
 The PM has the magnetic field itself, using the DC brake may possibly cause the motor run in a
reverse direction, therefore, it is not recommended to use DC brake for PM. Use Pr. 10-49 zero
voltage command to force the motor decelerate or to stop.
DC Brake Time at STOP

Settings
 The motor may continue rotating after the drive stops output due to external forces or the inertia
of the motor itself. This parameter outputs DC current, generating torque to force the drive stop
after the drive stops output to make sure that the motor stops.
230V series: 350.0–450.0 V
460V series: 700.0–900.0 V
575V series: 850.0–1116.0 V
690V series: 939.0–1318.0 V
0–100%
0.0–60.0 sec.
0.0–60.0 sec.
12.1-07-1
 This parameter can be set during operation.
DC
DC
DC
DC
Default:
370.0/740.0/895.0/1057.0
Default: 0
Default: 0.0
Default: 0.0