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)
Description
0
0001
Connection with DP-master is not OK.
1
0002
Unused
2
0004
FDL (Fieldbus Data link Layer) is not OK.
3
0008
Clear data command received.
4
0010
Actual value is not updated.
5
0020
Baud rate search.
6
0040
PROFIBUS ASIC is not transmitting.
7
0080
Initializing of PROFIBUS is not OK.
8
0100
The drive is tripped.
9
0200
Internal CAN error.
10
0400
Wrong configuration data from PLC.
11
0800
Wrong ID sent by PLC.
12
1000
Internal fault occurred.
13
2000
Not configured.
14
4000
Timeout active.
15
8000
Warning 34 active.
•
Check
for more information on limitations.
Troubleshooting
Operating Guide | VLT® FCD 300 PROFIBUS Converter MCA 117
AQ289550754901en-000101 / 130R0890
86 | Danfoss A/S © 2019.11
Summary of Contents for VLT MCA 117
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