Baumuller b maXX BM5800 - Page 520

Operating Modes
Parameter manual b maXX BM5800
Document No.: 5.16029.03 Baumüller Nürnberg GmbH
520
of 814
3.8
When the position resolution is a squaring, then the maximum revolution must be in-
creased by one.
Maximum position value = (Maximum revolution * position resolution) - 1
121.11 Speed limit
Bipolar limit to limit the output speed of the positioning operating modes.
Additionally the Z107.26– Maximum mechanical speed of the motor for determination of
the effective speed limit in the below-mentioned operating modes is used for the protec-
tion of the motor and the mechanical setup. The lesser value of the parameter Z121.11–
and Z107.26– is effective.
The maximum possible speed on the load side results from Z107.26– divided by the ac-
tive gear ratio Z18.16–. As soon as the operating modes are activated the calculation of
the limit is started. The limit is not adjusted if Z18.16– Gear ratio is changed in the status
„operation enabled“!
The lower value of Z121.11– and Z107.26– / Z18.16– is activated for limitation.
If the value 0 rpm is entered in Z107.26–, the value is ignored at the determination of the
speed limit, i.e. Z121.11– is effective.
Reference run (Operating mode 6):
If the set Z120.5– Homing speed exceeds the effective speed limit (Z121.11– and
Z107.26– respectively), the speed will be reduced to the value of the limit and bit 6 is set
in the Z120.1– Status.
Position target specification (Operating mode 1) and manual operation (Operating
mode 5):
If the set Z118.11– Speed or Z119.3– Jogging speed multiplied with the Z121.7– Feed
rate override exceeds the effective speed limit (Z121.11– and Z107.26– respectively),
the speed will be reduced to the value of the limit and bit 6 is set in the corresponding
operating mode status (
Z118.1– or Z119.1–).
Position control (Operating mode -4):
The input position values including offset parameters (Z136.3– to Z136.7–) are moni-
tored for overspeed. If the resulting set value speed exceeds the effective speed limit
(
Z121.11– and Z107.26– respectively), the speed will be reduced to the value of the lim-
it, the error 910 "Overspeed detected at the set value input" will be triggered and bit 6 will
be set in the
Z136.1– Status.
The following applies especially to the input set values Z136.3– Target position and
Z136.4– Target offset:
NOTE!
For MotionControl applications, the position resolution is permanently set to 65536
Inc/revolution!
The result is a maximum position value of FFFFFFFF
hex
.