Thermistor Input; Figure 2-27: Thermistor Input Schematic (Feedback Connector); Table 2-20: Thermistor Input Pin On The Feedback Connector - Aerotech Automation1 iXC4e Hardware Manual

iXC4e/XC4e

2.3.3. Thermistor Input

The thermistor input is used to detect a motor over temperature condition by using a positive
temperature coefficient sensor. As the temperature of the sensor increases, so does the resistance.
Under normal operating conditions, the resistance of the thermistor is low which will result in a low
input signal. As the increasing temperature causes the resistance of the thermistor to increase, the
sensor will trigger an over temperature fault.
The thermistor is connected between Pin 2 and Signal Common. The nominal trip value of the sensor
is 1.385 kΩ. The circuit includes a 12 kΩ internal pull-up resistor which corresponds to a trip voltage
of +0.52 V.
Table 2-20: Thermistor Input Pin on the Feedback Connector
Pin # Description
2 Motor Over Temperature Thermistor
Figure 2-27: Thermistor Input Schematic (Feedback Connector)
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Hardware Manual
In/Out/Bi
Input
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