Festo CAMC-G-S3 Manual page 219

5 Operation
Error group 55 Measuring of actual value 1
No. Code Message
55-8 - Impermissible acceleration detected
Cause
Action
Error group 56 Measuring of actual value 2
No. Code Message
56-8 80D1h Rotational speed / angle difference, encoder 1 - 2
Cause
Action
Festo – GDCP-CAMC-G-S3-EN – 1406NH – English
– Error in connected position encoder.
– EMC malfunctions affecting the position encoder.
– Impermissibly high acceleration rates in the movement profiles.
– Acceleration limit parameterised too low.
– Angle jump after reference movement in the position data
transmitted from the basic unit to the safety module.
• Check the connected position encoder: If further error mes­
sages occur in conjunction with the encoders, then eliminate
their cause first.
• Check the motor and encoder cable / screening on motor and
drive side. EMC malfunctions can trigger the error.
• Check the setpoint specifications / Movement profiles of the
controller: Do they contain impermissibly high temperatures
above the limit value for acceleration monitoring (P06.07)?
• Check whether the limit value for acceleration monitoring was
parameterised correctly - the limit value (P06.07) should be at
least 30% ... 50% above the maximum acceleration actually
occurring.
• In case of an angle jump in the position data transmitted from
the basic unit - Acknowledge error once.
– Rotational speed difference between encoders 1 and 2 of one
μC outside the permissible range for longer than the allowed
time.
– Angle difference between encoders 1 and 2 of one μC outside
the permissible range for longer than the allowed time.
• Problem may occur if two position encoders are used in the
system and they are not "rigidly coupled".
• Check for elasticity or looseness, improve mechanical system.
• Adjust the expert parameters for the position comparison if this
is acceptable from an application point of view.
Reaction
configurable
Reaction
configurable
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