LT360 Precision Turntable
User Manual
LT360 Precision Turntable
User Manual
31
An internal view of the drive line with the grease tube inserted is shown
below. The grease port is directly over the worm gear. The grease tube can
be inserted until it touches the gear.
With the platter rotating, several small portions of grease can be injected.
The rotating worm gear will spread the grease around the main helical gear.
Do not over grease. A total amount of grease about 1 Inch long x 1/4 Inch
wide is sufficient.
58
Most errors produced by the LT360 will be RS-232 command or parameter
errors, especially if the user is programming via RS-232. The USB processing
routines also rely on the RS-232 command decoders, so it is very possible to
see RS-232 error codes while using the USB interface.
The basic LT360 serial RS-232 communication parameters are: 9600 baud, 8
data bits, no parity, 1 stop bit, and no flow control.
Error - 0 : Motor Home Position Error
The stepper motor produces a specific number steps for a given amount of
platter rotation. The LT360 utilizes microstepping for additional precision
control. One particular phase of the motor is designated as the
Home
position. For any given platter rotation, the motor should always end in its
Home position. This is checked by the firmware continuously, if the
MotorHomeChk
option is enabled. If the motor position is not in the Home
phase at the end of a movement, this error will be shown.
In normal operation this error should never occur. If it does, the unit must
be powered off, or the
MotorHomeChk
option disabled, to clear the error.
It is possible for this error to be produced by noise in the stepper motor
controller, or by the load exceeding the torque capability thereby causing
the motor to skip steps.
If this error is shown repeatedly, either there is a noise problem internal in
the LT360 or the torque load is too great for the drive system.
