8. Operating modes
192
Festo P.BE-CMMP-CO-SW-EN 0708NH
Access
rw
PDO Mapping
yes
Units
min
-1
Value Range
0 … 32768 min
-1
Default Value
32768 min
-1
Objekt 60FF
h
: target_velocity
The object
target_velocity
is the nominal value specification for the ramp generator.
Index
60FF
h
Name
target_velocity
Object code
VAR
Data Type
INT32
Access
rw
PDO Mapping
yes
Units
speed units
Value Range
--
Default Value
--
8.6
Velocity ramps
If
profile_velocity_mode is selected as
modes_of_operation
, the command value ramp is
also activated. It is thus possible, via the objects
profile_acceleration
and
profile_deceleration
, to limit a jump-shaped command value change to a certain velocity -
change per time. The controller makes it possible to not just specify different velocity
changes for braking and acceleration, but also to differentiate between positive and
negative velocity. The following illustration clarifies this behaviour:
v
t
2090_02 velocity_acceleration_pos
2090_04 velocity_acceleration_neg
IN
OUT
2090_05 velocity_deceleration_neg
2090_03 velocity_deceleration_pos
Fig. 8.24: Velocity ramps
Содержание CMMP Series
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