Management
Parameter manual b maXX BM3000
Document no.: 5.12001.07 Baumüller Nürnberg GmbH
398
of 820
4.5
111.8 External acceleration feedforward
This parameter permits the presetting of an external acceleration feedforward by a field-
bus. This parameter takes effect in the operating mode Position control with synchronous
set value specification (
Z109.1– = -4) only. The function is activated by Z18.9– Control-
ler options bit 2 = 1.
111.9 Jerk set value
This parameter displays the jerk set value after the addition of all set values. Its resolution
is 32 bit increments/revolution per ms
3
.
NOTE!
The parameter Z111.6– Interpolation mode must be set to mode 0 (extrapolation) at
the external feedforward. The fieldbus cycle time (Z131.18–) must correspond to the
controller cycle (Z1.8–) in order to achieve an optimum result.
NOTE!
Bit 1 in the Z18.9– takes priority over bit 2! In parameter Z111.8– the same notes
apply as described in parameter Z111.7–.
NOTICE!
The following functions are not applicable at an activated, external feedforward con-
trol value in the operating mode Position control with a synchronous set value spec-
ification because the dominating, external speed control value Z111.7– is
superimposing its reaction:
m Hardware and software limit switch monitoring, if the error reaction does not result
in a pulse block,
m the speed limit Z121.11–,
m the stop by parameter Z108.1– Control word bit 8,
m actual speed value synchronization after switching on.
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