6 Assi
nin
Parameters to the Control and the PLC Pro
ram
6
03.96
6.10 Linear motors (1FN1 and 1FN3 motors)
6-160
Siemens AG 2000 All Rights Reserved
SINUMERIK 840D Installation and Start-Up Guide (IAD) – 04.00 Edition
7. Determine the commutation angle offset
a) Incremental measuring system
– Incremental – one zero marker
Set MD 1017 = 1
The pulse and controller enabling signals may only be switched on now!
Every time the power is switched on and the enabling signals set, an
audible test current (MD 1019) flows through.
Traverse axis across zero marker, “JOG” mode
––> The angle offset is automatically entered in MD1016
––> Alarm 300799 appears
Accept with OK ––> save bootfile ––> NCK reset
– Incremental – none or several zero markers
The pulse and controller enabling signals may only be switched on now!
Synchronization takes place at the current position.
b) Absolute measuring system
The pulse and controller enabling signals may only be switched on now!
When the enabling signals are set, an audible test current (MD1019)
flows through once.
––> The angle offset is automatically determined and entered in
MD 1016
––> Alarm 300799 appears
Accept with OK ––> save bootfile ––> NCK reset
c) Distance-coded measuring system
This measuring system is not supported by the SIMODRIVE 611D.
Several zero markers must be selected incrementally.
(see Fig. 6-30)
8. Check and set rotor position identification
To check the rotor position identification routine, a test function can be used
to determine the deviation between the calculated rotor position angle and
the angle currently applied by the closed-loop control. The test sequence is
as follows:
– Start the test function several times and evaluate the deviation
Set MD 1736 (test rotor position identification) = 1
Deviation MD 1737 (rotor position identification deviation)
= _ _ _ _ , _ _ _ _ , _ _ _ _ , _ _ _ _ , _ _ _ _
– Is the variation in the measured values less than 10 degrees electrical?
No: Increase MD 1019 (e.g. by 10 %) and repeat
measurements.
If result is OK after repeat, then calculate the
commutation angle offset
again as described below:
– With an incremental measuring system:
a) Incremental – one zero marker
see point 7. (Determine the commutation angle offset)
b) Incremental – none or several zero markers
Select “Save bootfile” and then “NCK reset”
04.0004.00
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