Festo CMMS-AS-G2 Series, Description

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10 Service
140 Festo – GDCP-CMMS-AS-G2-FW-EN – 1310NH – English
10 Service
10.1 Protective and service functions
10.1.1 Overview
The motor controller has a complex array of sensors that monitor the controller section, power output
stage, motor and external communication to ensure that they function excellently. Most errors cause
the controller section to switch off the motor controller and the power output stage. The motor control-
ler cannot be switched back on until the error is remedied and then acknowledged.
For some of the diagnostic messages, the behaviour of the motor controller can be parametrised.
Possible reactions:
– PS off power section is switched off immediately. The residual energy results in uncontrolled
movements (coasting) in the motor until a state of rest is reached.
– QStop Quick stop with the parametrised deceleration “Quick Stop (FCT)”. The power stage is
switched off after the rest state has been reached or after expiration of the parametrised monitor-
ing time Quick Stop (FCT).
– Warn Output of a warning, no further error response
– Ignore No error response
A complex system of sensors and numerous monitoring functions ensure operational reliability:
– Measurement of the motor temperature
– Measurement of the power output stage temperature
– Detection of power interruption/failure
– Detection of earth faults (PE)
– Detection of overvoltages and undervoltages in the intermediate circuit
– I
2
t-monitoring of motor and output stage
– Detection of errors in the internal power supply
– Supply voltage failure
10.1.2 Overload current and short-circuit monitoring of the motor output
Overload current and short-circuit monitoring detects short circuits between two motor phases and
short circuits at the motor output terminals against the positive and negative reference potential of the
intermediate circuit and against earthing (PE). If the error control detects overload current, the power
output stage shuts down immediately, guaranteeing protection against short circuits.
10.1.3 Monitoring of interruption and failure of the mains supply
Monitoring of interruption and failure for mains supply takes effect if the mains voltage is interrupted >
60 ms.