Err
or code
Diagnostic code
Meaning for the LMV37.4... system
Remedy
4
Speed variation / VSD r
amp up time too long / speed belo
w minimum
limit for standar
dization
Motor has not r
eached a stable speed after r
amp up.
1.
Ramp time settings of the VSD ar
e not shorter than those of the basic unit
(par
ameters 522, 523).
2.
Char
acteristic of the VSD is not linear
. Configur
ation of the voltage input at the
VSD must accor
d with that of the basic unit (par
ameter 645).
3.
VSD does not follo
w quickly enough the changes of the basic unit. Check
settings of the VSD (input filter
, slippage compensation, hiding differ
ent
speeds)
4.
Speed of VSD lies belo
w the minimum for standar
dization (650 1/min)
5
W
rong dir
ection of r
otation
Motor
’s dir
ection of r
otation is wr
ong.
1.
Motor turns indeed in the wr
ong dir
ection
change par
ameterization of the dir
ection of r
otation or inter
change 2 live
conductors.
2.
Sensor disk is fitted the wr
ong way
turn the sensor disk.
6
Unplausible speed sensor signals
The r
equir
ed pulse pattern (60°, 120°, 180°) has not been corr
ectly identified.
1.
Speed sensor does not detect all tappets of the sensor disk
check distance
2.
As the motor turns, other metal parts ar
e detected also, in addition to the
tappets
impr
o
ve mounting.
3.
Electr
omagnetic interfer
ence on the sensor lines
check cable r
outing, impr
o
ve EMC
7
Invalid standar
dized speed
The standar
dized speed measur
ed does not lie in the permissible r
ange
motor turns too slo
wly or too fast
15
Speed de
viation µC1 + µC2
The speeds of micr
ocomputer 1 and 2 de
viated too much. This can be caused b
y
wr
ong standar
dized speeds (e.g. after r
estoring a data set to a ne
w unit)
repeat standar
dization and check the air-fuel r
atio
20
W
rong phase of phase manager
Standar
dization was made in a wr
ong phase. Permitted ar
e only phases
≤
12
contr
oller OFF
, start standar
dization again
21
Safety loop / burner flange open
Safety loop or burner flange is open
repeat standar
dization with safety loop closed
22
Air actuator not r
efer
enced
Air actuator has not been r
efer
enced or has lost its r
efer
encing.
1. Check if the r
efer
ence position can be appr
oached.
2. Check if actuators have been mix
ed up.
3.
If err
or only occurs after the start of standar
dization, the actuator might be
o
verloaded and cannot r
each its destination.
Summary of Contents for STG 146i/2
Page 34: ...34 Bentone 6 2 Wiring diagram...
Page 123: ......
Page 124: ...Enertech AB P O Box 309 SE 341 26 Ljungby www bentone com...
