10
Service
Festo – GDCP-CMMS/D-FW-EN – 1404NH – English
209
10.1.1
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 output
stage shuts down immediately, guaranteeing protection against short circuits.
10.1.2
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.
10.1.3
Overvoltage and undervoltage monitoring for the intermediate circuit
The overvoltage monitoring for the intermediate circuit takes effect as soon as the intermediate circuit
voltage exceeds the operating voltage range. The undervoltage monitoring for the intermediate circuit
takes effect as soon as the intermediate circuit voltage falls below the operating voltage range. The
output stage is switched off if it exceeds or falls below this range.
10.1.4
Output stage temperature monitoring
The output stage temperature is measured with a temperature sensor. In error management, the reac-
tion to the errors “Temperature of output stage is 5 °C below maximum” and “Over-temperature of
output stage” can be parametrised.
10.1.5
Monitoring the motor and motor encoder
The motor controller has the following protective functions for monitoring the motor and the connected
motor encoder:
Protective func-
tion
Description
Monitoring of the
encoder
A motor encoder error results in the output stage switching off. Generally true
for intelligent encoders is that their various error messages are evaluated and
reported by the motor controller as common error “E 08-6” and “E 08-8”.
Measurement and
monitoring of the
motor temperat-
ure
The motor controller can record and monitor the motor temperature through the
connection [X6].
The reaction to the error “Over-temperature error (motor)” can be parametrised
in error management.
Tab. 10.1 Protective functions of the motor
Summary of Contents for CMMD-AS series
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