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01.99
08.02
Timing when
The following timing for passive referencing applies when using incre-
passively
mental encoders for the master and slave drives. When referencing the
referencing
master drive, after its zero mark is reached, passive referencing for the
(from SW 5.1)
slave drive is requested. The master drive then traverses through the
reference point offset up to the reference point.
During this travel, the slave drive must detect a 1/0 edge at the "refer-
ence cam" input signal and then its own zero mark.
After the master drive has reached its reference point, the slave drive is
moved to its reference point.
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E Siemens AG 2005 All Rights Reserved
SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
Phase 1
Master drive searches for its zero mark
The master drive has moved away from the reference cam and
searches for the next zero mark.
After the zero mark has been found, the following is initiated:
– The drive is braked down to standstill
– Master drive:
Set the "request passive referencing" output signal
– Slave drive:
When the "request passive referencing" input signal has been
detected, the slave drive starts to search for the 1/0 edge of the
input signal "reference cams" after which it searches for the zero
mark
Phase 2
The master drive starts to its reference point
The master drive moves to traverse to its reference point. During
this traversing operation, the slave drive continues to search for its
zero mark.
Phase 3
The master drive approaches its reference point
When the reference point is reached, the following is initiated:
– The "request passive referencing" output signal is reset
If the slave drive, up to this instant in time, has not found a zero
mark, fault 175 is signaled.
Phase 4
Slave drive referenced
– For P0179 = 0
After the reference point is reached, the value from P0160 is ac-
cepted as new actual value (set reference point).
– For P0179 = 2
After the axis has reached its standstill position, the axis is tra-
versed, corresponding to P0162, to its own reference point with
the velocity defined in P0413. The value from P0160 is then ac-
cepted as new actual value.
––> Refer under the commissioning help for passive referencing
of the slave drive
6 Description of the Functions
6.3
Axis couplings (from SW 3.3)
6
6-455
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