No. Description Warning Alarm/Trip Alarm/Trip Lock Parameter Reference
318 CT Ratio Error X
Table 9.5 Alarm/Warning code list
A trip is the action when an alarm has appeared. The trip
will coast the motor and can be reset by pressing [Reset]
or make a reset by a digital input (Par. 5-1* [1]). The origin
event that caused an alarm cannot damage the frequency
converter or cause dangerous conditions. A trip lock is an
action when an alarm occurs, which may cause damage to
frequency converter or connected parts. A Trip Lock
situation can only be reset by a power cycling.
LED indication
Warning yellow
Alarm flashing red
Trip locked yellow and red
Table 9.6
Alarm Word and Extended Status Word
Bit Hex Dec Alarm Word Warning Word Extended Status Word
0 00000001 1 Mains Cont. Fault Reserved Reserved
1 00000002 2 Heatsink Temp Heatsink Temp Auto CT Running
2 00000004 4 Earth Fault Earth Fault Reserved
3 00000008 8 Ctrl.Card Temp Ctrl.Card Temp Reserved
4 00000010 16 Ctrl. Word TO Ctrl. Word TO Reserved
5 00000020 32 Over Current Over Current Reserved
6 00000040 64 SC Cont. Fault Reserved Reserved
7 00000080 128 Cap. Over Current Cap. Over Current Reserved
8 00000100 256 Cap. Earth Fault Cap. Earth Fault Reserved
9 00000200 512 Inverter Overld. Inverter Overld. Reserved
10 00000400 1024 DC under Volt DC under Volt Reserved
11 00000800 2048 DC over Volt DC over Volt Reserved
12 00001000 4096 Short Circuit DC Voltage Low Reserved
13 00002000 8192 Inrush Fault DC Voltage High Reserved
14 00004000 16384 Mains ph. Loss Mains ph. Loss Reserved
15 00008000 32768 Auto CT Error Reserved Reserved
16 00010000 65536 Reserved Reserved Reserved
17 00020000 131072 Internal Fault 10V Low Password Time Lock
18 00040000 262144 DC Over Current DC Over Current Password Protection
19 00080000 524288 Resistor temp Resistor temp Reserved
20 00100000 1048576 Mains Earth Fault Mains Earth Fault Reserved
21 00200000 2097152 Switch. Freq. Limit Reserved Reserved
22 00400000 4194304 Fieldbus Fault Fieldbus Fault Reserved
23 00800000 8388608 24 V Supply Low 24V Supply Low Reserved
24 01000000 16777216 CT Range Reserved Reserved
25 02000000 33554432 1.8V Supply Low Reserved Reserved
26 04000000 67108864 Reserved Low Temp Reserved
27 08000000 134217728 Auto CT Interrupt Reserved Reserved
28 10000000 268435456 Option Change Reserved Reserved
29 20000000 536870912 Unit Initialized Unit Initialized Reserved
30 40000000 1073741824 Safe Stop Safe Stop Reserved
31 80000000 2147483648 Mains Freq. Limit Extended Status Word Reserved
Table 9.7 Description of Alarm Word, Warning Word and Extended Status Word
The alarm words, warning words and extended status
words can be read out via serial bus or optional fieldbus
for diagnosis. See also 16-90 Alarm Word, 16-92 Warning
Word and 16-94 Ext. Status Word. “Reserved” means that
the bit is not guaranteed to be any particular value.
Reserved bits should not be used for any purpose.
Troubleshooting VLT Automation Low Harmonic Drive Operating Instructions
160 MG34O202 - VLT
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