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Error
Diagnostic code
code
Bit 3
Valence 8
Bit 4
Valence 16
Bit 5
Valence 32
84
#
Bit 0
Valence 1
Bit 1
Valence 2..3
Bit 2
Valence 4..7
85
#
0
1
Bit 7
Valence 128
86
#
0
Bit 0
Valence 1
Bit 3
Valence 8
Bit 4
Valence 16
87
#
0
Bit 0
Valence 1
20068463
Faults - Probable causes - Solutions
Meaning of the REC 37.100A2 system
Curve too steep in terms of train speed
Speed signal interruption
Quick switch-off due to excessive speed deviation
Servomotors curve slope
VSD: Curve too steep in terms of train speed
Fuel servomotor: Curve too steep in terms of train ratio
Air servomotor: Curve too steep in terms of train ratio
Reference error of a servomotor
Reference error of the fuel servomotor
Reference error of the air servomotor
Reference error owing to parameter modification
Fuel servomotor error
Position error
Circuit open
Curve too steep in terms of train ratio
Deviation of section compared with the last reference
Air servomotor error
Position error
Circuit open
60
Recommended measures
The speed was not reached because the curve was too steep.
1. With a train REC3... of 20 s, the speed variation between 2
points of the curve (in modulating mode) cannot exceed 10%.
With a train REC3... of 10 s, the speed variation between 2
points of the curve (in modulating mode) cannot exceed 20%.
With a train REC3... of 5 s, the speed variation between 2
points of the curve (in modulating mode) cannot exceed 40%.
---> Between the ignition point (P0) and the low flame point
(P1), the speed in modulating mode may vary by a maximum of
40%, regardless of the train REC3....
2. The VSD train must be about 20% faster than the train of the
standard unit (parameters 522, 523).
No speed detected, despite the control.
1. Check the motor is rotating.
2. Check whether the speed sensor provides a signal (LED /
check the distance from the sensor disc).
3. Check the VSD wiring.
For about 1 s, the speed deviation was >10% outside the
envisaged range.
1. Check the train times of REC3.... and VSD.
2. Check the VSD wiring.
1. With a train REC3... of 20 s, the speed variation between
points of the curve (in modulating mode) cannot exceed 10%
.With a train REC3... of 10 s, the speed variation between
points of the curve (in modulating mode) cannot exceed 20%
2. With a train REC3... of 5 s, the speed variation between
points of the curve (in modulating mode) cannot exceed 40%
---> Between the ignition point (P0) and the low flame point
(P1), the speed in modulating mode may vary by a maximum of
40%, regardless of the train REC3....
The VSD train must be about 20% faster than the train of the
standard unit (parameters 522, 523)
The slope of the curve can correspond to a maximum position
variation of 31° between 2 points of the modulation curve
The slope of the curve can correspond to a maximum position
variation of 31° between 2 points of the modulation curve
The reference of the fuel servomotor was not successful.
It was not possible to reach the reference point.
1. Check if the servomotors have been inverted.
2. Check if the servomotor is blocked or overloaded.
The reference of the air servomotor was not successful.
It was not possible to reach the reference point.
1. Check if the servomotors have been inverted.
2. Check if the servomotor is blocked or overloaded.
The parameterisation of an actuator (e.g. the reference
position) has been modified. This error will be visualised to start
up a new reference.
It was not possible to reach the target position within the
required range ---> Check to see if the servomotor is blocked or
overloaded.
Open circuit detected on the connection of the servomotor
---> Check the wiring (voltage between pins 5 or 6 and 2 of the
X54 connector should be > 0.5 V).
The slope of the curve can correspond to a maximum position
modification of 31° between 2 points of the modulation curve.
Overloading of the servomotor or servomotor subjected to
mechanical torsion.
1. Check if the servomotor is blocked in any point along its
range of action.
2. Check if the torque is sufficient for the application.
It was not possible to reach the target position within the
requested tolerance range.
1. Check if the servomotor is blocked or overloaded.
Open circuit detected on the connection of the servomotor
---> Check the wiring (voltage between pins 5 or 6 and 2 of the
X54 connector should be > 0.5 V).
GB
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