Dynamic Braking - Siemens MICROMASTER 440 Operating Instructions Manual
Hide thumbs
Also See for MICROMASTER 440:
- Parameter manual (329 pages) ,
- Operating instructions manual (312 pages) ,
- Quick start manual (68 pages)
Table of Contents
Advertisement
3 Functions
WARNING
For compound braking, regenerative braking is superimposed on the DC
braking (braking along a ramp). This means that components of the kinetic
energy of the motor and driven load are converted into thermal energy in the
motor. If this power loss is too high or if the braking operation takes too long,
then this can cause the drive to overheat !
NOTE
Only active in conjunction with V/f control.
Compound braking is de-activated, if
- flying restart is active,
- DC braking is active, and
- Vector control (SLVC, VC) is selected.
The compound switch-in threshold V
V
DC-Comp
3.14.3
Dynamic braking
Parameter range:
Warnings
Faults
Function chart number:
For several drive applications, in certain operating states, the motor can
regenerate. Examples of these applications include:
Cranes
Traction drives
Conveyor belts which transport loads downwards
When the motor is in the regenerative mode, the energy from the motor is fed back
into the DC link of the drive converter via the inverter. This means that the DC link
voltage increases and when the maximum threshold is reached, the drive inverter
is shutdown (tripped) with fault F0002. This shutdown (trip) can be avoided by
using dynamic braking. Contrary to DC and compound braking, this technique
requires that an external braking resistor is installed.
The advantages of dynamic resistor braking include:
The regenerative energy is not converted into heat in the motor
It is significantly more dynamic and can be used in all operating states (not only
when an OFF command is output)
140
≠
(P1254 = 0)
V
DC-Comp
P1237
A0535
F0022
-
is dependent on P1254
DC-Comp
≠
(P1254
0)
MICROMASTER 440
Issue 10/03
Operating Instructions
6SE6400-5AW00-0BP0
- Quick Links:
- Fault Messages
Hide quick links:
Advertisement
Chapters
Table of Contents
Troubleshooting
