Brake Connection Option; Relay Connection - Danfoss FC 300 Operating Instructions Manual

FC 300 Operating Instructions

Brake Connection Option

The connection cable to the brake resistor
must be screened/armoured.
NB!:
Dynamic brake calls for extra equipment and safety considerations. For further information,
see the Instruction Brake Resistors for Horizontal Applications, MI50SXYY.
Use cable clamps to connect the screen to the metal cabinet of the frequency converter
1.
and to the decoupling plate of the brake resistor.
2. Dimension the cross-section of the brake cable to match the brake current.
NB!:
Voltages up to 975 V DC (@ 600 V AC) may occur between the terminals.
NB!:
If a short circuit in the brake IGBT occurs, prevent power dissipation in the brake resistor
by using a mains switch or contactor to disconnect the mains for the frequency converter.
Only the frequency converter shall control the contactor.

Relay Connection

To set relay output, see par. group 5-4* Relays.
Terminals for relay connection (≤ 7.5 kW).
36
How to Install
Terminals for relay connection (11-22 kW).
MG.33.A5.02 - VLT is a registered Danfoss trademark
No. 81 82 Brake resistor
R- R+ terminals
No. 01 - 02 make (normally open)
01 - 03 break (normally closed)
04 - 05 make (normally open)
04 - 06 break (normally closed)