16-6* Inputs/Outputs
16-60 Digital Input 18,19,27,33
0-1111
16-61 Digital Input 29
0-1
16-62 Analog Input 53 (volt)
16-63 Analog Input 53 (current)
16-64 Analog Input 60
16-65 Analog Output 42 [mA]
16-68 Pulse Input [Hz]
16-71 Relay Output [bin]
16-72 Counter A
16-73 Counter B
16-8* Fieldbus/FC Port
16-86 FC Port REF 1
0x8000-0x7FFFF
16-9* Diagnosis Readouts
16-90 Alarm Word
0-0XFFFFFFFF
16-92 Warning Word
0-0XFFFFFFFF
16-94 Ext. Status Word
0-0XFFFFFFFF
18-** Extended Motor Data
18-8* Motor Resistors
18-80 Stator Resistance (High
resolution)
0.000-99.990 ohm *0.000 ohm
18-81 Stator Leakage
Reactance(High resolution)
0.000-99.990 ohm *0.000 ohm
Table 1.11
1.6 Troubleshooting
No. Description
Warning Alarm
Trip
Lock
Error
Cause of Problem
2
Live zero error
X
X
Signal on terminal 53 or 60 is less than 50% of value set in
6-10 Terminal 53 Low Voltage
,
6-12 Terminal 53 Low Current
and
6-22 Terminal 54 Low Current
.
4
Mains phase loss
1)
X
X
X
Missing phase on supply side, or too high voltage imbalance. Check
supply voltage.
7
DC over voltage
1)
X
X
Intermediate circuit voltage exceeds limit.
8
DC under voltage
1)
X
X
Intermediate circuit voltage drops below “voltage warning low” limit.
9
Inverter overloaded
X
X
More than 100% load for too long.
10
Motor ETR over temperature
X
X
Motor is too hot due to more than 100% load for too long.
11
Motor thermistor over
temperature
X
X
Thermistor or thermistor connection is disconnected.
12
Torque limit
X
Torque exceeds value set in either par. 4-16 or 4-17.
13
Over Current
X
X
X
Inverter peak current limit is exceeded.
14
Earth fault
X
X
X
Discharge from output phases to ground.
16
Short Circuit
X
X
Short-circuit in motor or on motor terminals.
17
Control word timeout
X
X
No communication to frequency converter.
25
Brake resistor short-circuited
X
X
Brake resistor is short-circuited, thus brake function is disconnected.
27
Brake chopper short-circuited
X
X
Brake transistor is short-circuited, thus brake function is discon-
nected.
28
Brake check
X
Brake resistor is not connected/working
29
Power board over temp
X
X
X
Heat-sink cut-out temperature has been reached.
30
Motor phase U missing
X
X
Motor phase U is missing. Check the phase.
31
Motor phase V missing
X
X
Motor phase V is missing. Check the phase.
32
Motor phase W missing
X
X
Motor phase W is missing. Check the phase.
38
Internal fault
X
X
Contact local Danfoss supplier.
44
Earth fault
X
X
Discharge from output phases to ground.
47
Control Voltage Fault
X
X
24 V DC may be overloaded.
51
AMT check U
nom
and I
nom
X
Wrong setting for motor voltage and/or motor current.
52
AMT low I
nom
X
Motor current is too low. Check settings.
59
Current limit
X
VLT overload.
63
Mechanical Brake Low
X
Actual motor current has not exceeded “release brake” current
within “start delay” time window.
80
Drive Initialised to Default Value
X
All parameter settings are initialized to default settings.
84
The connection between drive
and is lost
X
No communication between and frequency converter
85
Button disabled
X
See parameter group 0-4*
LCP
86
Copy fail
X
An error occurred while copying from frequency converter to LCP or
vice versa.
87
data invalid
X
Occurs when copying from LCP if the LCP contains erroneous data -
or if no data was uploaded to the LCP.
88
data not compatible
X
Occurs when copying from LCP if data are moved between
frequency converters with major differences in software versions.
89
Parameter read only
X
Occurs when trying to write to a read-only parameter.
90
Parameter database busy
X
LCP and RS485 connection are trying to update parameters simulta-
neously.
91
Parameter value is not valid in this
mode
X
Occurs when trying to write an illegal value to a parameter.
92
Parameter value exceeds the
min/max limits
X
Occurs when trying to set a value outside the range.
nw
run
Not While RUNning
X
Parameter can only be changed when the motor is stopped.
Err. A wrong password was entered
X
Occurs when using a wrong password for changing a password-
protected parameter.
1)
These faults may be caused by mains distortions. Installing Danfoss Line Filter may rectify this problem.
Table 1.12 Warnings and Alarms Code list
Quick Guide
VLT
®
Micro Drive Quick Guide
MG02B702 - VLT
®
is a registered Danfoss trademark
13
1
1
