ETS-Lindgren 2188 Turntable - Manual (Page 24)

Model 2188 Turntable
©ETS-Lindgren—January, 2006
Rev. B—P#399771
24
5.2. Setting Travel Limits
Figure 5: Turntable Limit Switch
The Model 2188 is fitted with mechanically actuated or “hard” limit
switches. These switches are adjustable to allow for limited travel
beyond zero and 360 degrees. Actuation pins are placed in the
turntable top to engage the limit switch mechanism. The limit
switch mechanism is designed so that the amount of travel is
dictated by the pin position in the turntable top.
The default configuration allows for travel between –45 degrees
and +405 degrees. Remove all pins and the access panel. Move
the turntable so that the access hatch is directly above the limit
switch mechanism (shown in Figure five above). Set the
mechanism to the CCW armed position and insert actuations pins
in the holes on either side of the mechanism 45 degrees away.
Now, set the current position displayed by the controller to 000.0
degrees. Test the lower limit by holding down the DEC key, which
allows the turntable to travel past the soft limit. The turntable
should engage the lower hard limit between -35 and -55 degrees.
You can also test the upper limit by holding down the INC key until
the upper limit is engaged between 395 and 415 degrees.
It is also advised that the user properly set the “soft” limits in the
controller should non-continuous operation be desired.
To set the counterclockwise rotational limit for the turntable, press
the DOWN/CCW key under LIMIT. The indicator above this key will
light. Set the limit by pressing the INCRM and DECRM keys under
LIMIT until the desired limit is shown on the display. Then, press