Configuration
Function blocks
Internal motor control with V/f characteristic control (MCTRL1)
8
8.2
8.2.6
8.2−34
EDSVF9383V EN 7.1−04/2012
Function procedure
0
1
5
2
3
4
C0036
9300vec089
Fig. 8.2−16 Signal sequence with DC injection braking
Actual speed value of the motor (e. g. MCTRL−NACT)
Controller output current (e. g. MCTRL−IACT)
Pulse inhibit (e. g. DCTRL−IMP)
Activating DC injection braking (MCTRL−GSB)
DC injection braking is active (MCTRL−GSB−OUT)
MCTRL−GSB−OUT = HIGH: Function is active
MCTRL−GSB−OUT = LOW: Function is not active
The motor rotates with the preset speed. The current adjusts itself as a
function of the load .
DC injection braking is activated with MCTRL−GSB = HIGH. Pulse inhibit
is set. The motor coasts.
The pulse inhibit is deactivated and the DC braking current set in C0036 is
injected
DC injection braking is deactivated with MCTRL−GSB = LOW
The motor is accelerated to speed setpoint at the set acceleration ramp and
is kept there.
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