3.6.8 Brake Cable
(Only standard with letter B in position 18 of typecode).
Terminal No.
Function
81, 82
Brake resistor terminals
The connection cable to the brake resistor must be shielded. Connect the shield by means of cable clamps to the conductive backplate on the adjustable
frequency drive and to the metal cabinet of the brake resistor.
Size the brake cable cross-section to match the brake torque. See also
Brake Instructions, MI.90.Fx.yy
and
MI.50.Sx.yy
for further information regarding
safe installation.
Please note that voltages up to 1099 V DC, depending on the supply voltage, may occur on the terminals.
F Enclosure Recommendations/Requirements
The brake resistor(s) must be connected to the brake terminals in each inverter module.
3.6.9 Load Sharing
(Only extended with letter D in position 21 of the typecode).
Terminal No.
Function
88, 89
Load sharing
The connection cable must be shielded and the max. length from the adjustable frequency drive to the DC bar is limited to 82 feet (25 meters).
Load sharing enables linking of the DC intermediate circuits of several adjustable frequency drives.
Please note that voltages up to 1099 V DC may occur on the terminals.
Load sharing calls for extra equipment. For further information, please contact Danfoss.
130BA863.10
Figure 3.46: Possible load sharing connection.
VLT
®
Automation Drive FC 300
Instruction Manual High Power
3 How to Install
MG.33.U2.22 - VLT
®
is a registered Danfoss trademark
3-49
3
