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Operating Guide | VLT® FCD 300 PROFIBUS Converter MCA 117
6 Troubleshooting
6.1 Troubleshooting Hints
The VLT® Decentral Drive FCD 300 was available as:
•
3 MBaud.
•
12 MBaud.
The VLT® FCD 300 PROFIBUS Converter MCA 117 detects the correct version by probing with the 3 MBaud and the 12 MBaud. If
3 MBaud leads to a negative result, the MCA 117 probes with 12 MBaud.
During the shift from 3 MBaud to 12 MBaud, the VLT® Decentral Drive FCD 302 resets and does a power-down/power-up sequence.
When a positive result is achieved, the MCA 117 stores the result in the flash memory and uses it as default at the next power-up.
When cyclic communication has been established, the NS LED on the MCA 117 is solid green, indicating that communication between
master and slave is established.
If the NS LED flashes, the master/PLC has not recognized the FCD 302. Check the following:
•
Check that the station address in the FCD 302 is the same as in the replaced FCD 300.
•
Check parameter 9-63 Actual Baud Rate. If the drive has a connection to the master, this parameter shows the detected baud rate. If
no master has been detected, the parameter reads: No baud rate found.
•
Check parameter 9-53 PROFIBUS Warning Word.
Table 237: Descriptions, Warning Words
Bit
Warning Word (Hex)
0
0001
1
0002
2
0004
3
0008
4
0010
5
0020
6
0040
7
0080
8
0100
9
0200
10
0400
11
0800
12
1000
13
2000
14
4000
15
8000
•
Check
1.4.1 Intended Use
86 | Danfoss A/S © 2019.11
and
1.4.2 Hardware
for more information on limitations.
Description
Connection with DP-master is not OK.
Unused
FDL (Fieldbus Data link Layer) is not OK.
Clear data command received.
Actual value is not updated.
Baud rate search.
PROFIBUS ASIC is not transmitting.
Initializing of PROFIBUS is not OK.
The drive is tripped.
Internal CAN error.
Wrong configuration data from PLC.
Wrong ID sent by PLC.
Internal fault occurred.
Not configured.
Timeout active.
Warning 34 active.
Troubleshooting
AQ289550754901en-000101 / 130R0890
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