Danfoss MCA 123 POWERLINK, Operating Instructions Manual, Page: 52 / 53

Bit (Hex) Unit
diagnose
bit Warning word
(16-92 Warning Word) Alarm no.
00000001 112 Brake check 28
00000002 113 Power card over
temperature 29
00000004 114 Earth fault 14
00000008 115 Control card 65
00000010 116 Control word timeout 18
00000020 117 Over current 13
00000040 118 Torque limit 12
00000080 119 Motor thermistor over
temp. 11
00000100 104 Motor ETR over
temperature 10
00000200 105 Inverter overloaded 9
00000400 106 DC link under voltage 8
00000800 107 DC link over voltage 7
00001000 108 DC link voltage low 6
00002000 109 DC link voltage high 5
00004000 110 Mains phase loss 4
00008000 111 No motor 3
00010000 96 Live zero error 2
00020000 97 10 V low 1
00040000 98 Brake overload 26
00080000 99 Brake resistor short circuit 25
00100000 100 Brake chopper fault 27
00200000 101 Speed limit 49
00400000 102 Fieldbus comm. fault 34
00800000 103 24 V supply fault 47
01000000 88 Mains failure 36
02000000 89 Current limit 59
04000000 90 Low temperature 66
08000000 91 Voltage limit 64
10000000 92 Encoder loss 61
20000000 93 Output frequency limit 62
40000000 94 Unused -
80000000 95 Warning word 2 (ext. stat.
word) -
Table 9.17 FC 301/FC 302
Bit (Hex) Comm. option STW ( 16-84 Comm. Option STW )
00000001 parameterization ok
00000002 configuration ok
00000004 clearmode active
00000008 baudrate search
00000010 waiting for parameterization
00000020 waiting for configuration
00000040 in data exchange
00000080 not used
00000100 not used
00000200 not used
00000400 not used
00000800 MCL2/1 connected
00001000 MCL2/2 connected
00002000 MCL2/3 connected
00004000 data transport active
00008000 not used
Table 9.18 FC 301/FC 302
NOTE
16-84 Comm. Option STW is not part of extended diagnosis.
9.1.6 Warning and Alarm Messages
There is a clear distinction between alarms and warnings.
When there is an alarm, the frequency converter enters a
fault condition. After the cause for the alarm has been
cleared, the master will have to acknowledge the alarm
message before the frequency converter can start
operating again. A warning, on the other hand, may come
when a warning condition appears, then disappear when
conditions return to normal, without interfering with the
process.
Warnings
A single bit within a warning word represents warnings
within the frequency converter. Bit status
[0] False means
no warning, while bit status [1] True means warning. Any
bit change in the warning word is notified by a change of
bit 7 in the status word.
Alarms
Following an alarm message, the frequency converter
enters fault condition. When the fault has been removed
and the controller has acknowledged the alarm message
by setting bit 7 in the control word, the frequency
converter resumes operation. A single bit within an alarm
word represents alarms within the frequency converter. Bit
status
[0] False means no fault, while bit status [1] True
means fault.
Troubleshooting MCA 123 POWERLINK Operating Instructions
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