KEB COMBIVERT F5-A Applications Manual page 358

Posi- and synchronous operating
Bit Meaning
Termination due
3 to new start
positioning
If the drive leaves the speed-controlled operation (first "start positioning" after activation of the posi mode), or if
during an active positioning a new "start positioning" command is given, the new target is possibly inaccessible
with the adjusted ramp and jerk times.
Parameter ru.84 "accessible rel. posi." displays the distance that the target must have to the actual position
ru.54 at the time of the "start positioning" pulse to be accessible with the programmed ramp and S-curve times.
Start
positioning
If the target is inaccessible with the ramps from the oP-parameters, the ramp times can be changes online in
the event of a new "start positioning" pulse. For that purpose, there is the parameter PS.32 "limit acc/dec red-
ucing %".
Note: For the case of a start from the vector controlled operation, the online adaption is not active. A factor bet-
ween 25 and 100% can be adjusted in parameter PS.32. 25% means that the ramp and S-curve times may be
reduced to maximally 25% and increased by up to a factor of 4. The value 33% in PS.32 would correspondingly
allow a change of between 33% upto factor 3 of the values adjusted in the OP-parameters.
Page 7.12 - 66 COMBIVERT F5-A, -E, -H
PS.00: Posi / synchronous mode
Value Explanation
After starting a positioning, the target position that was valid at the time
0: off
of the "start posi" command is approached.
For a new „start posi" command during the acceleration or constant run-
ning phase of a running positioning (status „122: positioning active") the
new target is adopted and approached if it is reachable with the preset
acceleration / deceleration / jerk times. (For the processing of inacces-
8: on
sible positions, see chapter 7.12.4.15) For a sequential positioning, the
running positioning sequence is aborted. A new positioning sequence is
started with the new "start positioning" command, with the index pro-
grammed in PS.28 "start index new profile".
Starting of the decelerati-
on of the target appoach
Example:
At the "start positioning command", ru.84
indicates that the target must be at least
200000 increments away from the current
ru.84
actual position to be accessible with the
programmed ramps.
The target is further away and the drive
positions to the target.
The deceleration phase starts, if the
amount of ru.84 ahead of the target is
ru.84
reached.
© KEB, 2012-10