Test Measurements On Linear Motor - Siemens SINUMERIK FM-NC Installation And Startup Manual

6 Assigning Parameters to the Control and the PLC Program
6.10 Linear motors (1FN1 and 1FN3 motors)
6.10.8

Test measurements on linear motor

Why measure?
Check phase
sequence
U–V–W
6-174
If the linear motor has been started up in accordance with instructions, but inex-
plicable error messages still appear, it will be necessary to test all signals by
means of an oscilloscope.
When the primary parts are connected in parallel,
EMF_U of motor 1 must be in phase with EMF_U of motor 2.
The same applies to EMF_V and EMF_W.
This in-phase condition must be checked by means of test measurements.
Procedure for taking test measurement:
S
Isolate terminals 48 and 63 on the NE module and terminal 663 on the
closed-loop control plug-in unit.
S
Caution: Wait for DC link to fully discharge!
S
Disconnect power cable from drive.
Separate any parallel connection of primary parts.
S
Create an artificial neutral point using 1k ohm resistors.
U
Linear
V
motor
W
1 kΩ
Fig. 6-42 Arrangement for test measurements
The phase sequence must be U–V–W with a positive traversing direction.
The direction of the drive is positive if the primary part moves in the opposite
direction to the outgoing cable in relation to the secondary part.
+
Primary part
Secondary part (solenoids)
Ì Ì Ì Ì Ì Ì Ì Ì Ì Ì Ì Ì Ì Ì Ì Ì Ì Ì
Secondary part (solenoids)
Primary part
Ì Ì Ì Ì Ì Ì Ì Ì Ì Ì Ì Ì Ì Ì Ì Ì Ì Ì
Fig. 6-43 Determining the positive direction of the drive (CW rotating field)
SINUMERIK 840D Installation and Start-Up Guide (IAD) – 04.00 Edition
1 kΩ
EMF_W EMF_V
Outgoing cable direction
Outgoing cable direction
 Siemens AG 2000 All Rights Reserved
04.00
03.96
1 kΩ
EMF_U