the cross-section of the brake cable to match the brake
torque.
See
for details on the
dimensioning of brake resistors.
WARNING
HIGH VOLTAGE
Voltage can be over 850 V DC on the terminals. Incorrect
installation of the motor, frequency converter or fieldbus
may cause death, serious injury or equipment damage.
•
Comply with the instructions in this manual, as
well as national and local rules and safety
regulations.
3.4.10 Ground Connection
As leak current to the ground is higher than 3.5 mA,
always ground the frequency converter according to
prevailing national and local regulations. To guarantee that
the ground cable has a good mechanical connection to
terminal 95, the cable cross-section must be at least 10
mm
2
or 2 rated ground wires that are terminated
separately. To ensure safety, install an RCD (Residual
Current Device), which guarantees that the frequency
converter trips when leak current becomes too high. See
also
RCD Application Note
.
3.4.11 Load Sharing
Load sharing provides the facility to connect several frequency converters' DC intermediate circuits. This requires that the
installation is extended using extra fuses and AC coils (see drawing below). For load sharing, set
parameter 400 Brake
function
to
[5] Load sharing
.
Use 6.3 mm Faston Plugs for DC (Load Sharing).
Contact Danfoss for further information.
No.
88
89
Load sharing
-
+
Illustration 3.30 Load Sharing Example
WARNING
HIGH VOLTAGE
Voltage can be over 850 V DC between terminal 88 and 89. Incorrect installation of the motor, frequency converter or
fieldbus may cause death, serious injury or equipment damage.
•
Comply with the instructions in this manual, as well as national and local rules and safety regulations.
Installation
Design Guide
MG27E402
Danfoss A/S © Rev. May/2014 All rights reserved.
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