Functions
09.2008
6SE7087-6QX70 (Version AK)
Siemens AG
7-14
Compendium Motion Control
SIMOVERT MASTERDRIVES
Differences from existing technology option F01:
♦
No automatic processing of blocks
♦
No automatic lag monitoring (this can be implemented using free
blocks if required, see Section "Script files with project examples")
♦
No fixed error messages or warnings (these can be implemented
using free blocks if required)
♦
No remaining traverse path in the case of relative positioning (in the
sense of F01)
The basic positioner, referred to in the subsequent text as positioner or
by the abbreviation BPos (in the parameters), is implemented using
three free function blocks. The factory settings of these all match and
the function blocks are already wired ready for operation with a motor
encoder. The user simply has to make the connections to the basic unit
(see function diagram 789c).
Setpoint transfer and mode management [FD789a]
Setpoint transfer block with mode management and edge-controlled
setpoint transfer for consistent data transfer.
Setup/positioning [FD789b]
Setup/positioning block that traverses a specified path relatively or
absolutely using the specified deceleration, acceleration and speed.
Correction value/homing [FD789c]
Correction block that provides the position correction and position
setpoints for linking to the position controller and also the position
detection (see overview diagram FD788, FD788a for linking to the basic
unit).
Function diagrams 788 to 789c are necessary for an understanding of
these instructions.
For the standard user, it is sufficient to work with function diagram 788a
and to use these instructions for reference if required.
The control/checkback signals have
positive
logic (up to RESET SET
setpoint).
Overview of the
three function
blocks
Recommendations
NOTE
