Operating & Mounting instructions – 8 074 143.03/03 – Page 26
F
ree adjustable V/f characteristic:
The frequency inverters >pDRIVE< CX profi have an adjustable DC brake. By locking a clocked DC
rotor voltage onto the base of the motor, the rotor produces a braking torque that
counteracts the rotation. With the help of the DC brake, braking a drive to minimum speed is
possible, before the mechanical brake is activated.
A051
Selection of DC braking VIC 00 or 01 00
Setting Function
00 can be controlled with digital input DB
01 alwaysactive
A052
DC braking: frequency VIC 0,00...60,00 Hz 0,50 Hz
A053
DC braking: waiting time VIC 0,0...5,0 s 0,0 s
A054
DC braking: braking torque VIC 0...70 % 0 %
A055
DC braking: braking time VIC 0,0...60,0 s 0,0 s
A056
DC braking: edge/level selection VIC 00 or 01 01
A057
DC braking: braking torque (start) VIC 0...70,0 % 0 %
A058
DC braking: braking time (start) VIC 0,0...60,0 s 0,0 s
A059
DC braking: carrier frequency VIC 0,5...12,0 kHz 3,0 kHz
Parameter A051
defines whether the internal DC brake is active or not.
Parameter A052
defines the frequency at which the DC brake starts. The setting is possible in the
range of 0,0 to 60,0 Hz.
Parameter A053
defines when the DC injetion braking is activated after the frequency set at A052 is
exceeded. During this time the motor is running idle.
Parameter A054
and A057 define the power value with which DC injection braking is carried out.
0% mean “very low“ and 70% “very high“.
DC brake
Braking
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