PSx3xxIO Instruction Manual
34
A run command is not approached immediately but only after a short idle period to
tighten the brake.
The brake releases at the end of every run.
To adjust the drive manually, it is first necessary to remove the corresponding rubber-
plug in the top cover. Then the drive can be rotated with a hexagonal key NW4. This
is relatively difficult, since in addition to any torque present, the friction brake force
also needs to be overcome.
(k) Reference runs
The Positioning System PSx3xxIO is equipped with an absolute measuring system,
therefore no reference run is required when the drive is switched on. If, in certain
cases, a reference drive to a hard block is still desired (e.g. once in the installation of
the drive onto the machine), the procedure should be as follows:
1) Before ordering the reference drive, the following settings must be applied:
-
Set max. driving torque (ISDU 153) and maximum release torque (ISDU 152)
to a maximum of 10% of the rated torque
-
Set holding torque (ISDU 155) and max. holding torque at drive end (ISDU
154) to 0.
-
Set speed limit for drive cancellation (ISDU 146) to 60.
-
Set time for going under the speed limit for drive cancellation (ISDU 159) to
100 (the period of time during which the drive tries to overcome the block is
reduced: With the reduced values, the positioning is cancelled if the speed
below 60% of the setpoint speed for more than 100ms. Standard is 200 ms
and 30%).
-
Set the relevant end limit (ISDU 129 or 130) so that the block is clearly within
the end limits in each case (otherwise there is the danger that the block lies
within the positioning window and therefore will not be recognized.)
-
If necessary, reduce the setpoint speed for manual operation (ISDU 145)
2) now start the reference run as manual drive (set Bit 0 or 1 in the control word).
3) Wait until the drive moves (Bit 6 in the status word is set)
4) Wait until the drive is standing and a positioning error has occurred (Bit 6 is reset
in the status word, bit 10 is set).
5) with the same settings, perform manual drive in the opposite direction (move a
piece of the block away so that the drive can move freely).
6) now only apply desired settings of the above ISDUs for normal operation.
Summary of Contents for PS*3**IO series
Page 37: ...Instruction Manual PSx3xxIO 37...
