Additional Connections; Load Sharing; Installation Of Load Sharing; Brake Connection Option - Danfoss FC 300 Design Manual

FC 300 Design Guide

Additional Connections

"

Load sharing

"
With load sharing you can connect several adjustable frequency drive's DC intermediate circuits if
you extend the installation using extra fuses and AC coils (see illustration).
NOTE
Load sharing cables must be shielded/armoured. If an unshielded/unarmoured cable
is used, some EMC requirements are not complied with.
Voltage levels of up to 975 V DC may
occur between terminals 88 and 89.

Installation of Load Sharing

"
The connection cable must be shielded and the max. length from the adjustable fre-
quency drive to the DC bar is 81 ft. [25 m].
NOTE
Load sharing calls for extra equipment and safety considerations. For further
information, see Load Sharing Instructions MI.50.NX.YY.

Brake Connection Option

"
The connection cable to the brake resistor
must be shielded/armored.
114
How to Install
MG.33.B6.22 - VLT is a registered Danfoss trademark
No. 88 89 Loadsharing
DC DC +
No. 81 82 Brake resistor
R- R+ terminals