phytron phyMOTION INAM01.1, Translation Of The Original Manual

Page: 38 / 45

Manual INAM01 / INAM02
MA 1275-A004 EN 38
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. 10: 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.