Electrical Installation - Brake Resistor Temperature Switch; Electrical Installation - Bus Connection - Danfoss VLT 5000 Series Instruction Manual

Terminals for load sharing
The connection cable must be shielded and the max.
length from the adjustable frequency drive to the DC
bar is 25 meters / 81 feet.
Load sharing enables linking of the DC intermediate
circuits of several adjustable frequency drives.
NOTE
Please note that voltages up to 1099 V DC
may occur on the terminals.
Load sharing calls for extra equipment.
For further information, please consult
Load Sharing Instructions MI.50.NX.XX.
Fan Supply
Torque 4.4-5.3 In-lbs
Screwsize: M3
Available in VLT 5122-5552, 380-500 V; 5042-5602,
525-690 V; 5032-5052, 20-240 V in all enclosure
types.
Only for IP 54 units in the power range VLT 5016-5102,
380-500 V and VLT 5008-5027, 200-240 V AC. If the
drive is supplied by the DC bus (loadsharing), the in-
ternal fans are not supplied with AC power. In this case
they must be supplied with an external AC supply.
64
®
VLT 5000 Series
Electrical installation - brake resistor temperature
switch
Torque: 0.5-0.6 Nm
Screw size: M3
No. Function
106, 104, 105 Brake resistor temperature switch.
NOTE
This function is only available on VLT
5032-5052, 200-240 V; VLT 5122-5552,
380-500 V; and VLT 5042-5602, 525-690
V.
If the temperature of the brake resistor
gets too high and the thermal switch drops
out, the adjustable frequency drive will
stop braking. The motor will start coasting.
A KLIXON switch must be installed that is
'normally closed'. If this function is not
used, 106 and 104 must be short-circuited
together.

Electrical installation - bus connection

In accordance with the RS 485 (2-conductor) norm, the
serial bus connection is connected to terminals 68/69
on the adjustable frequency drive (signals P and N).
Signal P is the positive potential (TX+,RX+), while sig-
nal N is the negative potential (TX-,RX-).
If more than one adjustable frequency drive is to be
connected to a given master, use parallel connections.
MG.51.C5.22 - VLT is a registered Danfoss trademark.