Bit Hex
Dec
Alarm word
Alarm word
2
Warning word
Warning
word 2
Extended status word
18
00040000 262144
Brake overload
(A26)
Fans error
Brake overload
(W26)
Fans warn
Password protection
0-61 = ALL_NO_ACCESS OR
BUS_NO_ACCESS OR
BUS_READONLY
19
00080000 524288
U phase loss
(A30)
ECB error
Brake resistor
(W25)
ECB warn
Reference high
reference >
parameter 4-55
Warning Reference High
20
00100000 1048576
V phase loss
(A31)
Hoist me-
chanical
brake (A22)
Brake IGBT
(W27)
Hoist me-
chanical
brake (W22)
Reference low
reference <
parameter 4-54
Warning Reference Low
21
00200000 2097152
W phase loss
(A32)
Reserved
Speed limit
(W49)
Reserved
Local reference
reference site = REMOTE ->
auto on pressed & active
22
00400000 4194304
Fieldbus fault
(A34)
Reserved
Fieldbus fault
(W34)
Reserved
Protection mode notification
23
00800000 8388608
24 V supply
low (A47)
Reserved
24 V supply
low (W47)
Reserved
Unused
24
01000000 16777216
Mains failure
(A36)
Reserved
Mains failure
(W36)
Reserved
Unused
25
02000000 33554432
1.8 V supply
low (A48)
Current limit
(A59)
Current limit
(W59)
Power Limit
Motor
Unused
26
04000000 67108864
Brake resistor
(A25)
Motor rotat-
ing unex-
pectedly
(A122)
Low temp
(W66)
Power Limit
Generator
Unused
27
08000000 134217728
Brake IGBT
(A27)
Reserved
Voltage limit
(W64)
Reserved
Unused
28
10000000 268435456
Option change
(A67)
Reserved
Encoder loss
(W90)
Reserved
Unused
29
20000000 536870912
Drive initial-
ized (A80)
Encoder loss
(A90)
Output freq.
lim. (W62)
BackEMF
too high
Unused
30
40000000 1073741824 Safe stop (A68)
PTC thermis-
tor (A74)
Safe stop
(W68)
PTC ther-
mistor
(W74)
Unused
31
80000000 2147483648 Mech. brake
low (A63
Dangerous
failure (A72)
Extended sta-
tus word
Protection mode
The alarm words, warning words and extended status words can be read out via a serial bus or optional fieldbus for diagnostics. See
also
parameter 16-94 Ext. Status Word
.
5.2 Descriptions of Warnings and Alarms
Depending on settings, FC 301/302 is able to give warnings or trigger alarms. In the Programming Guide for VLT® AutomationDrive
FC 301/302, a full list of all warnings and alarms can be found. Below, an extract of most common alarms and warnings can be
found.
AU373327181955en-000101 / 130R1208 | 355
Danfoss A/S © 2021.08
Troubleshooting
VLT® AutomationDrive EZ FC 321
Programming Guide