Siemens SINUMERIK 840D Simodrive 611 digital - Start-Up: Linear Motors with 2 Identical Primary Sections

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03/2006
6.10 Linear motors (1FN1 and 1FN3 motors)
6-141
© Siemens AG 2006 All Rights Reserved
SINUMERIK 840D/810D Start-Up Guide (IADC) – 03/2006 Edition
11. Set software limit switch (see subsection 6.9.11 under the heading of
“Monitoring positions via software limit switches”)
12. Optimize axis controller settings
Note:
The automatic controller setting does not produce any useful results for
linear motors since the measuring system mounting has a significant effect
on the control characteristic.
– Current and speed controllers (see Chapter 10)
– Position controller (see Chapter 10)
6.10.3 Start-up: linear motors with 2 identical primary sections
If it is certain that the EMFs of both motors have the same phase relation, then
the motors can be operated on one drive if they have parallel connecting
cables.
The start-up procedure for paralleled linear motors is based on the start-up
operation for a single linear motor.
Initially only one linear motor (motor 1) is connected to the drive and started up
as a single motor (1FNx...). The commutation angle offset is determined either
automatically or with instruments (see subsection 6.10.8) and is noted.
Motor 2 is then connected in place of motor 1 and operated as a single motor.
Again, the commutation angle offset is determined either automatically or with
instruments (see subsection 6.10.8) and is noted.
If the difference between the commutation angle offsets of motor 1 and motor 2
is less than 10 degrees electrical, both motors may be connected to the drive in
parallel and may be operated as a parallel circuit with 2 linear motors
(e.g. 2x 1FN. ...).
The start-up sequence for paralleled linear motors is as follows:
1. Disconnect the paralleled motors
Connect only motor 1 to the power section.
2. Start up motor 1 as if it were a single motor
––> Note the information in subsection 6.10.1
––> Start up as described in subsection 6.10.2
(including point 7.)
––> Check the rotor position identification and set
(see subsection 6.10.2, point 8.)
3. Move axis and check correct function
4. Note the commutation angle offset of motor 1
– MD 1016 (motor 1) = _ _ _ _ _ _ _ _ degrees electrical
General
Procedure for
starting up
paralleled linear
motors