Danfoss VLT CDS302 Operating Instructions Manual page 146

Troubleshooting
Bit Hex
17 00020000
18 00040000
19 00080000
20 00100000
21 00200000
7 7
22 00400000
23 00800000
24 01000000
25 02000000
26 04000000
27 08000000
28 10000000
29 20000000
30 40000000
31 80000000
Table 7.3 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 diagnose. See also 16-94 Ext. Status Word.
WARNING 1, 10 Volts low
The control card voltage is below 10 V from terminal 50.
Remove some of the load from terminal 50, as the 10 V
supply is overloaded. Max. 15 mA or minimum 590 Ω.
This condition can be caused by a short in a connected
potentiometer or improper wiring of the potentiometer.
Troubleshooting
Remove the wiring from terminal 50. If the warning clears,
the problem is with the customer wiring. If the warning
does not clear, replace the control card.
WARNING/ALARM 2, Live zero error
This warning or alarm only appears if programmed by the
user in 6-01 Live Zero Timeout Function. The signal on one
of the analog inputs is less than 50% of the minimum
146
Operating Instructions VLT
Dec Alarm Word
131072 Internal Fault (A38) KTY error
262144 Brake Overload
(A26)
524288 U phase Loss (A30) ECB error
1048576 V phase Loss (A31) reserved
2097152 W phase Loss (A32) reserved
4194304 Fieldbus Fault (A34) reserved
8388608 24 V Supply Low
(A47)
16777216 Mains Failure (A36) reserved
33554432 1.8V Supply Low
(A48)
67108864 Brake Resistor (A25) reserved
134217728 Brake IGBT (A27)
268435456 Option Change
(A67)
536870912 Drive
Initialized(A80)
1073741824 Safe Stop (A68)
2147483648 Mech. brake low
(A63)
®
MG34M302 - VLT is a registered Danfoss trademark/Commercial Compressor
®
CDS302 and CDS303
Alarm Word 2 Warning Word
10V Low (W1)
Fans error Brake Overload (W26)
Brake Resistor (W25)
Brake IGBT (W27)
Speed Limit (W49)
Fieldbus Fault (W34)
reserved 24V Supply Low (W47)
Mains Failure (W36)
reserved Current Limit (W59)
Low Temp (W66)
reserved Voltage Limit (W64)
reserved Encoder loss (W90)
Feedback Fault Feedback Fault (W61,
(A61, A90) W90)
PTC 1 Safe Stop Safe Stop (W68)
(A71)
Dangerous Failure Extended Status Word
(A72)
value programmed for that input. Broken wiring or faulty
device sending the signal can cause this condition.
Troubleshooting
Check connections on all the analog input
terminals. Control card terminals 53 and 54 for
signals, terminal 55 common. MCB 101 terminals
11 and 12 for signals, terminal 10 common. MCB
109 terminals 1, 3, 5 for signals, terminals 2, 4, 6
common).
Check that the frequency converter programming
and switch settings match the analog signal type.
Perform Input Terminal Signal Test.
WARNING/ALARM 3, No motor
No motor has been connected to the output of the
frequency converter.
Warning Extended
Word 2 Status Word
KTY Warn Password Timelock
number of allowed
password trials
exceeded - timelock
active
Fans Warn Password Protection
0-61 =
ALL_NO_ACCESS OR
BUS_NO_ACCESS OR
BUS_READONLY
ECB Warn Reference High
reference > 4-55
reserved Reference Low
reference < 4-54
reserved Local Reference
reference site =
REMOTE -> auto on
pressed & active
reserved Protection Mode
reserved Unused
reserved Unused
reserved Unused
reserved Unused
reserved Unused
reserved Unused
Unused
PTC 1 Safe Unused
Stop (W71)
Unused