SMAX - SSI and analogue
8 - Troubleshooting
The following list shows some typical faults that may occur during installation
and operation of the magnetic measurement system.
Fault:
The system does not work (no pulse output).
Possible cause:
The scale and/or the sensor are not installed properly (the active surface of
the scale does not match the sensitive part of the sensor; or the sensor is
not oriented properly). For correct installation please refer to the “3 -
Mounting instructions” section on page 9.
A magnetic part or a protection surface is interposed between the sensor
and the scale. Only non-magnetic materials are allowed between the sensor
and the scale.
Installation does not comply with the tolerance gap between the sensor and
the scale indicated in this guide; the sensor hits the surface of the scale or is
too far from it. Check whether the sensor sensitive part is damaged.
The sensor has been damaged by short circuit or wrong connection.
Fault:
The measured values are either inaccurate or not provided in the whole length.
Possible cause:
The gap between the sensor and the scale is not respected all along the
whole measuring length. See the “3 - Mounting instructions” section on
page 9.
The sensor is not installed properly on the scale. See the “3 - Mounting
instructions” section on page 9.
The connection cable runs near high voltage cables or the shield is not
connected properly. Check the earthing point.
The frequency of Master clock is set too high or too low and the
transmission cannot be synchronized correctly. See the “4 - SSI interface”
section on page 13.
A section of the magnetic scale has been damaged mechanically or
magnetically along the measuring length.
The measuring error is caused by a torsion in the machine structure. Check
parallelism and symmetry in the movement of the machine.
MAN SMAX SSI_AI1_AV2 E 1.5.odt
8 - Troubleshooting
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