Manual EXAM01
MA 1277-A011 EN
32
An accurate temperature can only be measured when the temperature at the reference
junction (connector) is exactly known. This is not possible by the connection construction
and und can cause indeterminate deviations of the temperature values.
Software evaluation of the measuring values from -180 °C to +260 °C.
i
CAUTION
– Possible damage!
Damage of the module by wrong connection or wire break.
- Check the integrity of the element type K and the correct
phyMOTION
TM
connection before motor temperature measurement.
An improperly
connected or broken wire can result a
wrong temperature evaluation and
thus a damage of the motor or other system components by
overheating.
Pt100 Resistor Sensor
Pt100 resistor sensors are used with in-vacuum and cryo stepper motors in the
temperature range
–200 to +300 °C.
These precise sensors are used in extreme industrial and laboratory conditions. They
consist of a wound resistance wire that is mounted and unsupported inside a cylindrical
ceramic case.
Fig. 23: Pt100 connection
Principle of the stepper motor temperature measurement by Pt100 resistor sensors:
The PTS generates a constant current between I+ and I-. This current generates a voltage
drop at the Pt100 which is measured at Sens+ and Sens-. The Pt100 sensors are
connected with 4 leads in order to enable measuring independent of the wire resistance.
Software evaluation of the measuring values from -220 °C to +390 °C.
