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02.99
08.04
As in the previous referencing function (before SW 2.1), all required
data must be entered in the dialog.
This data must then be confirmed with "Generate traversing program".
Functions of the referencing program:
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S
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S
The selected input terminal is automatically monitored for a cam signal
edge through the use of the dialog in SimoCom A.
P56.7 can be used to configure whether the cam signal edge to be
monitored should be a negative (P56.7 = 0; standard value for leaving
the cam) or a positive (P56.7 = 1 leaving an inverted cam).
The traversing program generated by the dialog is only created accord-
ing to the standard setting (setting P56.7 = 0).
If no corresponding cam signal edge occurs, the program is aborted (in
traversing block X+2) with error message 711 and supplementary infor-
mation 912. In this case (use of the referencing program with cam
monitoring), the drive is de–referenced.
Referenced axis
Before SW 1.2, the following is valid:
when powering up
If a referenced axis is switched–out, then it is still referenced after it
again
has been switched–in again if it was not moved when it was switched–
out (refer to ZSW.13 = 0).
From SW 1.2, the following applies:
Another behavior when the axis is switched–in again can be set using
P56 (operating options).
––> refer to Chapter 5.6.2 under P56
Behavior when
For axes with extremely low friction, it should be noted that a motor can
powering–down
move into a preferred position when it is powered–down. In the least
favorable case, this uncontrolled compensation movement is 11 de-
grees on the motor shaft.
If the electronics power supply is simultaneously switched–out, then
this drive motion is not detected.
Possible counter measures include:
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S
E Siemens AG 2013 All Rights Reserved
SIMODRIVE POSMO A User Manual (POS1) – 08/2013 Edition
Block X: "Traverse up to cam"
Block X+1: "Leave cam"
Block X+2: "Reference to occurring zero mark"
Block X+3: "Traverse to absolute position"
If there are separate electronics and load power supplies then the
electronics power supply must be switched–off with a delay after the
load power supply has been switched off.
The pulses should be cancelled before switching–off the load and
electronics power supply (e.g. using STW.1 = 0).
5 Description of the Functions
5.5 SIMODRIVE POSMO A functions
5
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