4
01.99
4.10 Linear motors (1FN1, 1FN3 motors)
4-192
Siemens AG 2005 All Rights Reserved
SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
4.10.8
Checking the linear motor by making measurements
If the linear motor was commissioned according to the relevant instruc-
tions, and unexplained fault/error messages still occur, then all of the
signals must be checked using an oscilloscope.
For primary sections connected in parallel,
the EMF_U from motor 1 must be in phase with the EMF_U from motor
2.
The same applies to EMF_V and EMF_W.
These must be checked using the appropriate measurements.
Procedure for making the necessary measurements:
De–energize terminal 48 (NE module) and terminal 663 (drive).
Important: Wait until the DC link has been discharged!
Disconnect the power cables at the drive.
If primary sections are connected in parallel, please disconnect.
Form an artificial neutral point using 1 kOhm resistors.
U
V
W
1 k
Ω
Linear
motors
EMF_U
1 k
Ω
1 k
Ω
EMF_W
EMF_V
Fig. 4-20 Configuration for making the measurements
For a positive traversing direction, the phase sequence must be U–V–W.
The direction of the drive is then positive if the primary section moves
relative to the secondary section in the opposite direction to the cable
outlet direction.
ÖÖÖÖÖÖÖÖÖÖÖÖÖÖÖÖÖÖÖ
ÖÖÖÖÖÖÖÖÖÖÖÖÖÖÖÖÖÖÖ
Secondary section (magnets)
+
ÖÖÖÖÖÖÖÖÖÖÖÖÖÖÖÖÖÖÖ
ÖÖÖÖÖÖÖÖÖÖÖÖÖÖÖÖÖÖÖ
Secondary section (magnets)
+
Primary
section
Cable outlet direction
Primary
section
Cable outlet direction
N – north pole marking
N – north pole marking
Fig. 4-21 The positive direction of the drive (clockwise rotating field)
Why make
measurements?
Checking the
phase sequence
U–V–W
4 Commissioning
