Service functions and error messages
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11.1.3
Overvoltage monitoring for the DC bus
This monitor responds, if the DC bus voltage exceeds the operating voltage range. The power output stage will be shut down.
11.1.4
Temperature monitoring of the heat sink
The heat sink temperature of the power output stage is measured with a linear temperature sensor. The temperature limit
varies from device to device.
11.1.5
Monitoring of the motor
The item servo positioning controller C 1-Series has the following protective functions to monitor the motor and the connected
encoder:
Monitoring of the encoder: An error of the shaft encoder leads to the shut-down of the power output stage. In the case of
resolvers, for example the encoder signal is monitored. In the case of incremental encoders the commutation signals are
checked. Other “intelligent” encoders provide further means of error detection.
Measurement and monitoring of the motor temperature: The item servo positioning controller C 1-Series has a digital and
analogue input for measuring and monitoring the motor temperature. The analog signal detection also supports non-linear
sensors. The following temperature sensors can be selected:
At [X2A], [X2B] and [X6]: Input for PTCs, NTCs, normally closed contacts, normally open contacts and analog sensors, type
KTY.
11.1.6
I²t monitoring
The item servo positioning controller C 1-Series comprises an I²t monitoring to limit the average power loss in the power
output stage and in the motor. Since the occurring power loss in the power electronics and in the motor in the worst case
increases square with the current, the squared current value is assumed as the measure for the power loss.
