Danfoss MCA 194 Operating Instructions Manual page 45

Troubleshooting
6 Troubleshooting
6.1 Step-by-step Troubleshooting
1.
Copy the station address from the VLT
®
the VLT AutomationDrive.
2. Cycle power to the FC 302.
3.
The master/PLC now recognises FC 302 as a VLT
5000.
4. The NS LED on the MCA 194 option is now solid
green indicating that communication between
master and slave is established.
If the NS LED flashes, the master/PLC has not recognised
the FC 302 action:
•
Check if station address is the same in the FC 302
®
as the replaced VLT
•
Check 10-01 Baud Rate Select. If the frequency
converter has no connection to the master, this
parameter may be set to the wrong baudrate.
•
Check 10-13 Warning Parameter.
Warn. Word
Bit Description
[Hex]
0 0001 Bus not active
1 0002 Explicit connection timeout
2 0004 I/O connection
3 0008 Retry limit reached
4 0010 Actual value is not updated
5 0020 CAN bus off
6 0040 I/O send error
7 0080 Initialisation error
8 0100 No bus supply
9 0200 Bus off
10 0400 Error passive
11 0800 Error warning
12 1000 Duplicate MAC ID Error
13 2000 RX queue overrun
14 4000 TX queue overrun
15 8000 CAN overrun
Table 6.1 Warning Word
•
Check chapter 1.4 Constraints for more
information on limitations.
MG37E102
Operating Instructions
®
5000 to
®
5000.
Danfoss A/S © Rev. 2014-03-06 All rights reserved.
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