4
01.99
4.10 Linear motors (1FN1, 1FN3 motors)
4-184
Siemens AG 2005 All Rights Reserved
SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
4.10.5
Thermal motor protection
Two independent monitoring circuits are available for the 1FN1, 1FN3
primary sections for thermal motor protection.
The absolute, average winding temperature can be measured using the
temperature sensor (Temp–F) comprising a temperature sensor (KTY
84).
The overtemperature shutdown circuit (Temp–S) allows each individual
motor phase winding to be digitally monitored for an overtemperature
condition.
The two independent temperature circuits Temp–F and Temp–S can be
used for motor protection, either individually or together. At least one
Temp_S must be used for the motor overtemperature protection.
The circuit and connection system for Temp–F and Temp–S are de-
scribed in detail in:
Reader’s note
Section ”General information on the connection system (CON)” in:
Reference:
/PJLM/ Configuration Manual,
1FN1, 1FN3 Linear Motors
!
Danger
The circuits of Temp–F and Temp–S neither have ”protective
separation” between each other nor to the power circuits in
accordance with VDE 0160/EN 50178.
Thus, they may not be used as SELV/PELV circuits, or connected with
these. Also refer to the literature reference mentioned above!
Note
Temp–S must be connected for thermal motor protection; it is not
permissible not to connect Temp–S!
Temp–F can be optionally connected to a measuring device for
commissioning and testing.
For regular operation, the Temp–F connections should be
short–circuited and connected to PE.
Description
4 Commissioning
08.01