Baumuller b maXX BM2500, Operating Manual

Page: 398 / 822

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 (
Z
109.1
–
= -4) only. The function is activated by
Z
18.9
–
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
Z
111.6
–
Interpolation mode must be set to mode 0 (extrapolation) at
the external feedforward. The fieldbus cycle time (
Z
131.18
–
) must correspond to the
controller cycle (
Z
1.8
–
) in order to achieve an optimum result.
NOTE!
Bit 1 in the
Z
18.9
–
takes priority over bit 2! In parameter
Z
111.8
–
the same notes
apply as described in parameter
Z
111.7
–
.
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
Z
111.7
–
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
Z
121.11
–
,
m
the stop by parameter
Z
108.1
–
Control word bit 8,
m
actual speed value synchronization after switching on.