Misprints and technical changes reserved
Instruction and Operation Manual
3
As with any form of electrical equipment, there is always a risk involved in
the handling of electrical machinery. The greatest care must always be
exercised during installation and maintenance. It is recommended that
service is performed by authorized personnel only
Caution !
1.
Do not connect or disconnect the chopper when it has power.
2.
Please take care of the correct polarity.
3.
If you exchange the connections BUSS + and BUSS- the inverter or the
chopper can be destroyed.
4.
Ultrafast semiconductor fuses for the protection of the IGBT is not
installed.
Table of contents
1.
Instruction of Safety ................................................................................................ 2
1.1
Instructions and Rules ............................................................................................. 2
1.2
Safety ...................................................................................................................... 2
2.
Function .................................................................................................................. 3
2.1
General data / application conditions ..................................................................... 4
2.2
Technical Data Chopper voltage 1000V ................................................................... 4
3.
Connections and Indications .................................................................................. 5
3.1
Design ...................................................................................................................... 5
3.2
Connectiondiagramm .............................................................................................. 6
4.
Example of Connection............................................................................................ 7
5.
Dimensions .............................................................................................................. 7
6.
Options .................................................................................................................... 8
6.1
Overcurrent relay .................................................................................................... 8
6.2
Ultrafast semiconductor fuses................................................................................. 8
7.
Calculation Braking Chopper and Resistor ............................................................... 8
8.
Connection Diagramm option Master
–
Slave ....................................................... 10
2.
Function
If the speed of the motor is reduced the motor behaves like a generator. Since the kinetical
energy is not sent back with the Inverter to mains the intermediate circuit (BUSS) capacitors
store the energy. The voltage of the intermediate circuit increases. If the intermediate circuit
voltage the inverter protects itself by turning off.
To avoid the interuption of braking, a Braking Choppers is used. It is activated if the voltage of
the intermediate circuit is higher than the tolerable intermediate circuit voltage. The braking
resistor is connected with the intermediate circuit and the additional energy is transformed to
