Lenze EVF9383 - Manual (Page 249)

Configuration
Function blocks
Internal motor control with V/f characteristic control (MCTRL1)
8
8.2
8.2.6
l
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
ƒ 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)
ƒ If quick stop is active, the motor brakes to standstill with the
deceleration time set in C0105. MCTRL−QSP−OUT is set to HIGH.
ƒ After a signal, the motor is braked by injecting a DC current.
ƒ Braking in generator mode must be used for controlled brake ramps.
ƒ 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