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Error
Diagnostic code
code
4
5
6
7
15
20
21
22
23
24
25
128
255
83
#
Bit 0
Valence 1
Bit 1
Valence 2...3
Bit 2
Valence 4...7
Faults - Probable causes - Solutions
Meaning of the REC 37.100A2 system
Variation in speed / VSD acceleration time too long / speed
below the minimum limit for standardisation
Incorrect rotation direction
Implausible speed sensor signals
Standardised speed not valid
Speed deviation µC1 + µC2
Incorrect phase of the phase controller
Safety loop/burner flange open
Pneumatic actuator without reference
VSD deactivated
No valid operation mode
Pneumatic control of the air/fuel ratio
Run command without prior standardisation
No standardised speed available
VSD speed error
Lower control range limit
Greater control range limit
Stop caused by electromagnetic interference
59
Recommended measures
The motor has not reached a stable speed after acceleration.
1. The VSD train times are not shorter than those of the
standard unit (parameters 522, 523).
2. The VSD characteristic is not linear. The VSD voltage input
configuration must correspond with that of the standard unit
(parameter 645).
3.The VSD does not follow the changes of the standard unit
quickly enough. Check the VSD settings (input filter, slide
compensation, different latent speeds).
4. The VSD speed is below the minimum for standardisation
(650 rpm).
The motor rotation direction is incorrect.
1. The motor does not rotate in the correct direction ---> modify
the parameterisation of the rotation direction, or invert 2
phases.
2. The sensor disc is incorrectly assembled ---> turn the sensor
disc.
The required pulse pattern (60°, 120°, 180°) has not been
correctly identified.
1.The speed sensor does not detect all the noses of the sensor
disc ---> check the distance
2.When the motor rotates, other metal parts are detected along
with the noses
---> improve the assembly.
3. Electromagnetic interference on the sensor lines ---> check
the cable path, improve the EMC
The standardised speed measured is not within the allowed
range.
1.The motor turns too slowly or too quickly.
Microcomputer speeds 1 and 2 have an excessive deviation.
This may be caused by incorrect standardised speeds (e.g.
after the reintegration of a set of data in a new unit)
---> repeat the standardisation and check the air/fuel ratio.
The standardisation was performed in the wrong phase.
The only phases allowed are 12 ---> controller OFF, restart
the standardisation.
The safety loop or burner flange is open ---> repeat the
standardisation with the safety loop closed
The air actuator has no reference, or has lost it.
1.Check whether the reference position can be approached.
2.Check whether the actuators have been swapped over.
3.If the error only arises after the start of standardisation, the
actuator may be overloaded and unable to reach its
destination.
The standardisation was started with the VSD deactivated --->
activate the VSD and repeat the standardisation
The standardisation was started without a valid operation mode
---> activate a valid operation mode and repeat the
standardisation
The standardisation was started with a pneumatic control of the
air/fuel ratio ---> it is not possible to carry out the
standardisation with a pneumatic control of the air/fuel ratio
The VSD is controlled but not standardised ---> perform the
standardisation
The motor turns but is not standardised ---> perform the
standardisation
The required speed has not been reached
The speed was not reached because the control range limit
was activated
---> for the measurements, see error code 80
The speed was not reached because the control range limit
was activated ---> for the measurements, see error code 80
The speed has not been reached because there are too many
electromagnetic interferences on the sensor line. For the
measurements, see error code 81.
GB
20068463
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