Assembly
26
08.00|PGB 64 - 125|en
The hysteresis to both switching points will be adjusted automatically
corresponding to the characteristics of the magnetic field.
The user can set the switching and trigging points of each position a lit-
tle bit closer than for the automatic mode. The trigging point is closer
to the switching point. At the same time the susceptibility to trouble
and damage increases. In the mode of the lowest hysteresis, an error
signal (such as jitter or untimely switch off) can be avoided, if the sen-
sor is protected against all types of disturbances (i.e. by shielding).
Frequent types of disturbances are change in temperature and electro-
magnetic influences.
Within the closest fine-teach mode, SCHUNK cannot guarantee EMC-
compatibility any more.
The hysteresis adjustment is used for the manual adjustment of the
switching points (if necessary).
In case that the hysteresis automatically determined by the sensor
should be too high or too low after “the adjustment of the switching
points”, you may correct the value as follows.
The sensor avoids a too small hysteresis during hysteresis adjustment.
The smallest detectable difference in stroke is defined in the fol-
lowing table:
The smallest detectable difference in stroke based on the nominal stroke
For Grippers with X mm
nominal stroke per jaw
Min. query range per jaw / min.
queried stroke difference per jaw
X ≤ 5mm
30% of the nominal stroke per jaw
X = 5 to 10mm
20% of the nominal stroke per jaw
X ≥ 10mm
10% of the nominal stroke per jaw
1 Press the Teach-button (4) for 5 seconds.
LED 1 (3) will flash up after 2 seconds.
LED 1 will stop after 5 seconds.
2 Release the Teach-button.
3 Move the gripper to the "switch-off point for switching point
1" position.
4 Press the Teach-Button (4) briefly.LED 1 (3) will light up twice.
5 Move the gripper to the "switch-off point for switching point
2" position.
6 Press the Teach-Button (4) briefly.
LED 2 (5) will light up twice.
The mounting of the sensor MMS-P is completed.
Adjusting the
hysteresis
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