Danfoss VLT AutomationDrive FC 302 Installation Manual

Long control cables and analog signals may result in 50/60
Hz ground loops due to noise from line power supply
cables.
If ground loops occur, break the shield or insert a 100 nF
capacitor between shield and chassis, if needed.
Connect the digital and analog inputs and outputs to the
control cards of the units separately to avoid ground
currents. These connections are on terminals 20, 55, and 39
for both the
lter and adjustable frequency drive sections.
12 13 18 19 27 29 32 33 20 37
+24 V DC
0 VDC
130BT106.10
PNP (Source)
Digital input wiring
Figure 4.14 Input Polarity of Control Terminals, PNP
NPN (Sink)
Digital input wiring
12 13 18 19 27 29 32 33 20 37
+24 V DC
0 VDC
130BT107.11
Figure 4.15 Input Polarity of Control Terminals, NPN
NOTICE!
To comply with EMC emission specications, shielded/
armored cables are recommended. If using non-shielded/
armored cable, see chapter 4.7.3 Power and Control Wiring
for Non-shielded Cables. If using non-shielded control
cables, use ferrite cores to improve EMC performance.
130BT340.11
1
2
Figure 4.16 Connecting Shielded Cables
Connect the shields in a proper way to ensure optimum
electrical immunity.
4.8.5 Safe Torque O (STO)
To run STO, additional wiring for the frequency converter is
required. Refer to VLT
®
Frequency Converters Safe Torque O
Operating Instructions for further information.
Electrical Installation
VLT
®
AutomationDrive FC 302 Low Harmonic Drive
132–630 kW
46 Danfoss A/S © Rev. 04/2015 All rights reserved. MG37A322
44

Danfoss VLT AutomationDrive FC 302 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 302
Category	DC Drives
Language	English