Valhalla Zeus, Руководство пользователя

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1 Product Overview
The Zeus motor controller is a sub assembly intended for incorporation into an audio
HiFi turntable to provide necessary drive signals to the originally installed turntable
24 pole AC 115v synchronous motor. The Zeus provides two independent AC signals
for each phase of the AC synchronous motor. The following parameters may be
adjusted using configuration values defined and stored in the on-board
microprocessor: phase drive voltage, frequency and phase delay. Adjustable values
mean the user may adjust the parameters to achieve minimum motor vibration and
noise in their turntable which is highly desirable.
The microprocessor also incorporates a Proportional, integral and Derivative (PID)
control algorithm. By utilising an optical sensor to read the turntable platter rotation
speed and using the PID algorithm adjustment of the AC signals fed to the motor is
possible. The feedback loop created by the sensor and PID result in accurate speed
control and low WOW values and compensate for turntable wear and tear, also stylus
drag.
2 Installing and connecting the controller
2.1 Safety
WARNING: The Zeus motor controller MUST be installed inside a
turntable plinth that does not allow any physical contact with the Zeus
printed circuit board. Hazardous voltages exist on the printed circuit
board that may result in injury or death. If in doubt consult your dealer
who will be happy to install the controller board for you.
WARNING: Only ever connect a Laptop/PC USB connection via USB
cable routed out of your turntable plinth – do not operate the board
with the plinth baseboard removed as hazardous voltages exist within
the Zeus board.
INFORMATION: It is usual for the heatsinks to get hot during normal
operation typically 70-80 degrees centigrade.