UD53 User Guide
Issue code: 53nu3
14
5.5 Z marker-pulse outputs
(terminals 46, 47)
The Z marker pulse is created each time the resolver passes through its zero
position. If the marker pulse is required to occur at a different position, it is
necessary to re-position the resolver on the motor shaft. It will then be
necessary to change the value of parameter 16.09 Resolver phase offset by
an appropriate means (see Phase offset earlier in this chapter).
The Z marker pulse outputs are by default synchronized to the quadrant
where the quadrature A and B signals are both low. When synchronization
is disabled, the Z marker pulse can be present in any of the four quadrants, as
follows:
A and B both low
A and B both high
A low and B high
A high and B low
Drive software version V03.xx.07 onward
UD53 version 2 onward
(both present)
Synchronization of the Z marker-pulse output can be disabled by setting
parameter 16.12 Simulated-encoder output marker-pulse synchronization
disable at 1. Synchronization is automatically disabled when parameter
16.07 Simulated-encoder output scaling is set at either of the following:
• At a value that would cause the resolution of the encoder-simulation
outputs not to be an integral number of lines per revolution
(
LPR)
• At such a high value that the number of lines per revolution (
LPR) of
the simulated-encoder outputs is less than 1
Parameter 16.13 Simulated-encoder Z marker-pulse outputs synchronization
inactive indicator indicates the state of synchronization.
See the following logic table.
16.07 16.12
16.13
Set for integral number of lpr
0
0
1
1
Set for no integral number of LPR
Set for less than 1 LPR
0
1
1
1
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