Power Circuit; Load Sharing/Brake - Danfoss VLT Micro Drive FC 51 Operating Manual

VLT® Micro Drive FC 51
Operating Guide

3.8 Power Circuit

3 phase
power
input
+ 10 V DC
0-10 V DC -
0/4-20 mA
0/4-20 mA
Analog output
0/4-20 mA
Illustration 6: Diagram Showing all Electrical Terminals
1) Brakes (BR+ and BR-) are not applicable for enclosure size M1.
For information about brake resistors, see VLT® Brake Resistor MCE 101 Design Guide.
Improved power factor and EMC performance can be achieved by installing optional Danfoss line filters.
Danfoss power filters can also be used for load sharing. For more information about load sharing, see VLT® Micro DriveFC 51 Load
Sharing application note.

3.9 Load Sharing/Brake

Use 6.3 mm (0.25 in) insulated Faston plugs designed for high voltage for DC (load sharing and brake).
Contact Danfoss or see Load sharing instruction VLT® 5000 for load sharing and VLT® 2800/5000/5000 FLUX/FCD 300 Brake for brake.
Load sharing
Connect terminals -UDC and +UDC/+BR.
Brake
Connect terminals -BR and +UDC/+BR (not applicable for enclosure size M1).
Danfoss A/S © 2020.09
L1/L
L2
L3/N
PE
50 (+10 V OUT)
S200
ON/I=0-20 mA
53 (A IN)
OFF/U=0-10 V
60 (A IN)
55 (COM A IN/OUT)
42 (A OUT)
S200
12 (+24 V OUT)
18 (D IN)
19 (D IN)
20 (COM D IN)
27 (D IN)
29 (D IN)
33 (D IN)
Switch mode
power supply
10 V DC 24 V DC
S640
ON (NPN)
ON = Terminated
OFF (PNP)
OFF = Open
24 V (NPN)
5 V
0 V (PNP)
24 V (NPN)
0 V (PNP)
S801
24 V (NPN)
RS485
0 V (PNP)
interface
24 V (NPN)
0 V (PNP)
24 V (NPN)
0 V (PNP)
U
V
W
PE
UDC-
DC bus
Brake
UDC+/BR+
resistor
BR-
Relay 1
03
240 V AC, 2 A
02
01
0 V
(N RS485) 69
RS485
(P RS485) 68
(COM RS485) 61
(PNP) = Source
(NPN) = Sink
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Installation
Motor
1)