SYNAPTICON SOMANET Circulo 7, Документация

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3.1.6.3 Remedies for protection errors
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3.1.6.3.1 Remedy for over-current
There are various possible causes for an over-current error. Here are several potential ones which would be
helpful to check:
the controller output results in an exceeding current generated in the phase. Read the Torque actual value
and the Target torque during operation, the scope of OBLAC can be used for this purpose. If an exceeding
value can be seen in the torque value while the error happens, it often indicates that:
the PID controller (of the loop where the error is seen) is tuned too sharp to be stable. In this case,
tune the controller softer following our tuning instructions. The controller can be easily unstable if
the physical stability of the setup is bad, for example when the setup is not well fixed, or the load is
with low rigidity.
the command sent to the drive is too sharp. Make sure that your command is sent with an
appropriate acceleration / deceleration value. If a position step profile with relatively large amplitude
or a quick drag of the slider in Playground-Position is given, this can be the case.
if the velocity value doesn’t follow the torque value well (the torque doesn’t lead to active
acceleration) there may be a problem in the commutation angle calculation. Check the feedback
value of the sensor and perform the offset detection again.
an inappropriate power supply is used:
a voltage too high or too low would lead to malfunction of components. Check the voltage output of
your power supply, if necessary with a measurement tool.
if the power output rating of the supply is not enough for the application, the voltage would drop
while current is high, leading to the issue declared above.
a short in the circuit can easily trigger over-current.
a damaged hardware. In this case, there are often visible symptoms such as sparks or smoke.
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3.1.6.3.2 Remedy for over-voltage
Possible causes for over-voltages include:
the voltage output by the power supply is indeed exceeding the threshold. Adjust the voltage output
accordingly.
the voltage jump during motion leads to the error:
When a load is causing the motor to turn in the opposite direction of the commanded motion, the motor
generates power instead of consuming power. This leads to a voltage jump if there’s no braking chopper in
the circuit.
In this case use a power supply with integrated chopper or add a chopper device in the circuit for protection
(e.g. Synapticon braking chopper).
Please also refer to our guidelines about regenerative energy .
Synapticon Documentation
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