Configuration
Function blocks
Internal motor control with V/f characteristic control (MCTRL1)
8
8.2
8.2.6

8.2−33
EDSVF9383V EN 7.1−04/2012
After a signal request, the motor is decelerated to standstill when an internal
ramp function generator has been activated.
Mode of operation
Æ’ Quick stop is active
– MCTRL−QSP = HIGH
– The control word DCTRL−QSP is applied
– DC injection braking (GSB) is not active (GSB has priority over quick
stop)
Æ’ If quick stop is active, the motor brakes to standstill with the
deceleration time set in C0105. MCTRL−QSP−OUT is set to HIGH.
Æ’ After a signal, the motor is braked by injecting a DC current.
Æ’ Braking in generator mode must be used for controlled brake ramps.
Æ’ The hold time (C0107) has no influence. The motor remains braked
until MCTRL−GSB is set to LOW.
 Note!
Manual DC injection braking has priority over quick stop.
Setting
Selection Code Description
DC braking current C0036 DC braking current with which the motor is braked
 Stop!
An excessive DC braking current and braking time can thermally
overload the motor. Special care must be taken when using
self−ventilated motors.
Activation
The input MCTRL−GSB in the function block MCTRL is triggered with HIGH
level.
ƒ MCTRL−GSB = HIGH: Function is activated
ƒ MCTRL−GSB = LOW: Function is not activated
Quick stop (QSP)
Manual DC injection braking
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