10 Service
Festo – GDCP-CMMS/D-FW-EN – 1404NH – Engli sh 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 ear thing (PE). If the error c ontrol detects overload c urrent, the output
stage shuts down immediately, guaranteeing protection against shor t circuits.
10.1.2 Monitoring of interruption and failur e of the mains su pply
Monitoring of interruption and failure for mains supply takes ef fect if the mains voltage is interrupte d >
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 switc hed off if it exc eeds 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 c ontroller has the following protective functions for monitoring the motor and the connec ted
motor encoder:
Protective func-
tion
Description
Monitoring of the
encoder
A motor encoder error results in the out put stage switching off. Generally tr ue
for intelligent encoders is that their various error messages are evaluated and
reported by the motor controller as c ommon error “E 08-6” and “E 08-8”.
Measurement and
monitoring of the
motor temperat-
ure
The motor c ontroller can record and monitor the motor temperature through the
connection [X6].
The re action to the error “Over-temperature error (motor)” can be parametrised
in error management.
Tab. 10.1 Protective func tions of the motor
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