VMP-IOMM-2018-2
Fulton Ltd
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TROUBLESHOOTING - 6
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Building Technologies Division Basic documentation LMV26... CC1P7547en
30 Error code list 20.04.2016
Error code Diagnostic code Meaning for the LMV26... system Remedy
2 Control range limitation at the top
VSD speed was too low
81
1 Interrupt limitation speed input
Too much electromagnetic interference on the sensor line
improve EMC
82 # Error during VSD’s speed standardization
1 Timeout of standardization (VSD ramp down time too long)
Timeout at the end of standardization during ramp down of the VSD
ramp time settings of the VSD are not shorter than those of the basic unit (parameter: 523)
2 Storage of standardized speed not successful
Error during storage of the standardized speed
lock the basic unit, then reset it and repeat the standardization
3 Line interruption speed sensor
Basic unit receives no pulses from the speed sensor:
1. Motor does not turn.
2. Speed sensor is not connected.
3. Speed sensor is not activated by the sensor disk (check distance)
4
Speed variation / VSD ramp up time too long / speed below minimum
limit for standardization
Motor has not reached a stable speed after ramp up.
1. Ramp time settings of the VSD are not shorter than those of the basic unit (parameters 522,
523).
2. Characteristic of the VSD is not linear. Configuration of the voltage input at the VSD must
accord with that of the basic unit (parameter 645).
3. VSD does not follow quickly enough the changes of the basic unit. Check settings of the VSD
(input filter, slippage compensation, hiding different speeds)
4. Speed of VSD lies below the minimum for standardization (650 1/min)
5 Wrong direction of rotation
Motor’s direction of rotation is wrong.
1. Motor turns indeed in the wrong direction
change parameterization of the direction of rotation or interchange 2 live conductors.
2. Sensor disk is fitted the wrong way
turn the sensor disk.
6 Unplausible sensor signals
The required pulse pattern (60°, 120°, 180°) has not been correctly identified.
1. Speed sensor does not detect all tappets of the sensor disk
check distance
2. As the motor turns, other metal parts are detected also, in addition to the tappets
improve
mounting.
3. Electromagnetic interference on the sensor lines
check cable routing, improve EMC
7 Invalid standardized speed
The standardized speed measured does not lie in the permissible range
motor turns too slowly or too fast
15 Speed deviation µC1 + µC2
The speeds of microcomputer 1 and 2 deviated too much. This can be caused by wrong
standardized speeds (e.g. after restoring a data set to a new unit)
→ repeat standardization and check the fuel-air ratio
20 Wrong phase of phase manager
Standardization was made in a wrong phase. Permitted are only phases 12 controller OFF,
start standardization again
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