Danfoss VLT FC 100 Series User Manual

8.1.2. No Communication with the Drive
If there is no communication with the drive,
proceed with the following checks:
Check 1: Is the cabling correct?
Check that the cables are connected to the
correct terminals as shown in the diagram.
Pin no.
Termi-
nal
Colour Name
1 V- Black GND
2 CAN_L Blue CAN
LOW
3 Drain (bare) Screen
4 CAN_H White CAN
HIGH
5 V+ Red +24 V
Check 2: Is the 24V network voltage applied?
Check 3: Is the correct EDS file installed?
Download the correct EDS file from http://www.danfoss.com/drives.
Check 4: Is the bus connection terminated at both ends?
If not, terminate the bus connection with termination resistors at the initial and final nodes, as
shown in the following diagram. Termination is performed between terminal 2 (CAN_L) and 4
(CAN_H) with a resistor: 121 Ohm, 1% metal film, ¼ Watt.
FC 100/ 200/ 300 DeviceNet 8. Troubleshooting
MG.33.D3.02 - VLT
®
is a registered Danfoss trademark 75
8

Danfoss VLT FC 100 Series Specifications

General

Brand	Danfoss
Model	VLT FC 100 Series
Category	DC Drives
Language	English