Connecting To Mains And Motor; Control Terminals - Danfoss VLT Micro Drive FC 51 Quick Manual

Quick Guide

1.3.3 Connecting to Mains and Motor

The frequency converter is designed to operate all
standard 3-phased asynchronous motors.
The frequency converter is designed to accept mains/
motor cables with a maximum cross-section of 4 mm
AWG (M1, M2 and M3), and a maximum cross-section of 16
2
mm /6 AWG (M4 and M5).
•
Use a shielded/armoured motor cable to comply
with EMC emission specifications, and connect
this cable to both the decoupling plate and the
motor metal.
•
Keep motor cable as short as possible to reduce
the noise level and leakage currents.
•
For further details on mounting of the decoupling
®
plate, see VLT Micro Drive FC 51 Decoupling
Mounting Plate Instructions.
•
Also see the chapter EMC-correct Electrical Instal-
®
lation in the VLT Micro Drive FC 51 Design Guide.
1. Mount the ground wires to PE terminal.
2. Connect motor to terminals U, V, and W.
3. Mount mains supply to terminals L1/L, L2, and
L3/N (3-phase) or L1/L and L3/N (single-phase)
and tighten.
Illustration 1.2 Mounting of Ground Cable, Mains, and Motor
Wires

1.3.4 Control Terminals

All control cable terminals are located underneath the
terminal cover in front of the frequency converter. Remove
the terminal cover using a screwdriver.
NOTICE
See the back of the terminal cover for outlines of control
terminals and switches.
Do not operate switches with power on the frequency
converter.
Set 6-19 Terminal 53 Mode according to Switch 4
position.
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Quick Guide
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Illustration 1.3 Removing Terminal Cover
Switch 1
Switch 2
Switch 3
Switch 4
1)=default setting
Table 1.4 Settings for S200 Switches 1–4
Illustration 1.4 S200 Switches 1–4
Illustration 1.5 shows all control terminals of the frequency
converter. Applying Start (terminal 18) and an analog
reference (terminal 53 or 60) make the frequency converter
run.
Danfoss A/S © 05/2016 All rights reserved.
1)
Off=PNP terminals 29
On=NPN terminals 29
Off=PNP terminal 18, 19, 27 and 33
On=NPN terminal 18, 19, 27 and 33
No function
1)
Off=Terminal 53 0–10 V
On=Terminal 53 0/4-20 mA
1 1
1)
7