Bentone BG 550i M, Installation And Maintenance Instruction

Page: 131 / 148

Err
or
code
Diagnostic code
Meaning for the LMV37.4... system
Remedy
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 volt
age 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 d
ifferent
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 speed 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 add
ition 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 permissibl
e 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 air-fuel ratio
20
Wrong phase of phase manager
Standardization was made in a wrong phase. Permitted are only
phases ≤12
controller OFF, start standardization again
21
Safety loop / burner flange open
Safety loop or burner flange is open
repeat standardization with safety loop closed
22
Air actuator not referenced
Air actuator has not been referenced or has lost its referencing. 1. Check if the reference position can be approached. 2. Check if actuators have been mixed up. 3.
If error only occurs after the start of standardization, the actua
tor might be
overloaded and cannot reach its destination.
23
VSD deactivated
Standardization was started with VSD deactivated
activate the VSD and repeat standardization
24
No valid operating mode
Standardization was started without valid operating mode
activate valid operating mode and repeat standardization
25
Pneumatic air-fuel ratio control
Standardization was started with pneumatic air-fuel ratio control
standardization with pneumatic air-fuel ratio control not possible