Absolute Encoder; Operation With Multiturn Emulation - Parker Compax3 Operating Instructions Manual

Parker EME
Attention:
Machine reference
run

Absolute encoder

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Using a SinCos or EnDat Multiturn absolute value sensor as feedback system, the
absolute position can be read in over the entire travel range when switching on the
Compax3. This means that a machine zero run is not necessary after the switching
on (feedback may not be shifted by the absolute range while switched off).
In this case the reference only needs to be established once
at initial commissioning time

after an exchange of motor / feedback system

after a mechanical modification and

after an exchange of device (Compax3); does not apply for the "Store absolute

position in feedback" function.
after a configuration download

by carrying out a machine zero run.
The homing mode 35 "MN at the current position (see on page 118)" is
appropriate for this, because it is therewith possible to operate without proximity
switch, but any other homing mode is possible too - if the hardware prerequisites
are fulfilled.
When you have once re-established the reference, reset the machine zero run
mode to "without machine zero run".

Operation with MultiTurn emulation

You can simulate the function of a Multiturn over the entire travel distance by the
aid of a Multiturn emulation. A resolver or a SinCos
sufficient as a feedback signal from the motor.
It differs from the physical Multiturn in the way that the motor may not be moved by
more than half a turn if Compax3 (24VDC) is switched off - unless the absolute
position is lost.
Besides that, the Multiturn emulation offers the same function as the physical
Multiturn feedback.
You can switch on the Multiturn emulation directly in the wizard.
You can assign the maximum permissible motor angle via the Multiturn validity
window
If Compax3 states after switching on that this value is not exceeded, then das
"Referenziert" gesetzt (Zustandswort Bit 12 oder Ausgang M.A8) is applied.
Compax3 restores nevertheless the absolute position, the motor angle is correct,
the absolute position may however not be correct, if the motor was moved by more
than the validity window while currentless.
In this case, the drive is considered "not referenced" and the software end limit
monitoring is inactive!
For a unique machine zero run the same conditions apply as for the use of an
absolute encoder (Multiturn).
192-120113 N08 C3I12T11 - December 2010
Setting up Compax3
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/ EnDat Singleturn feedback is
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