ETS-Lindgren 2188 Turntable - Manual (Page 27)

Model 2188 Turntable
©ETS-Lindgren—January, 2006
Rev. B—P#399771
27
• The table is rotated from 0 to 360 and the mark is now within
one degree of being one full turntable revolution. Calibration
is complete.
5.4. Changing Rotation Speed
The Model 2188 turntable is equipped with a variable speed drive.
Firmware Revision 3.11 (or higher) must be installed in the Model
2090 series controller for proper operation of the Model 2188. The
revision level is displayed on the front panel LED display during
startup of the Model 2090 series controller. If the controller does
not have this or a later revision installed, consult the factory for an
upgrade.
To select one of the four speeds, use the POLAR/SPEED button to
toggle through the speed options. It is necessary to set the
controller parameters to configure the controller to properly control
the motor base. Refer to the controller manual to the section that
describes setting the parameters.
Specifically, parameter two must be set to the value three, which is
for variable speed control. Parameter C, which calibrates the
encoder counts to the rotation of the turntable, should be set to the
value 5440. This will insure that the position display will properly
report the full 360 degrees of travel.
5.5. Variable Speed Settings
The Model 2090 series controller parameters
S1-S4 control the
variable speed settings for the turntable. These parameters are the
continuous variable speed settings for each of the four speed
selections described below. Each of these parameters can be set
to any value from 1 to 255, with the resulting turntable speed being
roughly an S/255 fraction of the maximum speed. Note that it is the
nature of variable speed drives that there is a minimum speed at
which the motor will operate. For the Model 2188 this minimum
speed setting will be somewhere between 30-75 and should
correspond to a value of 0.5 RPM or less. Below this setting, the
motor will not be able to cause rotation, but will be active until a
Motor Not Moving error (E002) occurs.