Operating Modes
Parameter manual b maXX BM3000
Document no.: 5.12001.07 Baumüller Nürnberg GmbH
676
of 820
4.8
m Positioning to the angle
The synchronization movement is executed on the angle if bit 2 in Z122.2– is se-
lected, only. Thereby, the position of the drive is evaluated in the polynomial curve
and for synchronization movement the revolution part of this information is ignored.
Thus, the drive positions to the angle only and doesn’t catch up on the revolutions.
m Specify rotational direction
If bit 3 in Z122.2– is set then a synchronization is executed towards the rotational
direction which was set in Z122.2– bit 7 (1: negative rotational direction; 0: positive
rotational direction). When synchronizing to the angle this isn’t decisive as one rev-
olution at most is executed as a synchronization movement. This option turns into
an issue if it is to be synchronized to the absolute position of the drive. The synchro-
nization can take very long if the rotational direction was selected unfavorably be-
cause the position is specified in 32 bit revolutions and 32 bit angle.
4.8.13.6 Use of the output-sided gear
At the output of the polynomial curve generator a scaling of the mean output values is
possible by means of a gear factor. This factor is specified by two parameters.
The gear factor is either taken over when starting the operation mode or it can be changed
during the active operation.
When starting the parameter values of Z122.42– and Z122.43– are accepted as gear
factors. During the active operation the acceptance must be specifically initiated. This is
made via bit
8 in the control word Z108.1–. The sequence is the following:
1 The user sets the gear factor via Z122.42– and Z122.43–.
2 The user sets bit 8 in Z108.1– with a rising edge.
3 The drive changes the gear factor and accepts this by setting bit 13 in Z108.3– Status
word.
4 As soon as the user resets bit 8 in Z108.1–, the drive resets bit 13 in Z108.3–.
It must be considered that the gear factor causes an extension or reduction of the curve,
only. The synchronization always is performed on the original curve. If the extended or
reduced curve shall be the same reference point as the original curve, then it is important
that the master axis is in the starting point (this is defined in
Z122.8– and Z122.9–) at
switchover of the gear factor.
4.8.13.7 Overlaying using an additional movement
The curve can be shifted in the Y-direction by overlaying the polynomial curve with an ad-
ditional movement.
The distance of this overlaid movement can be specified in the parameter Target position
offset (
Z122.17–). This parameter is signed including the following information:
Gear factor
P122.42
P122.43
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