TURNTABLE & TOWER MOTOR CONTROL BOARD ADJUSTMENTS
66 & 55 SERIES EQUIPMENT (850M & 850DM Board)
INTRODUCTION
The 850M and 850 DM Motor Control Boards are DC/SCR drives that are used in
66 & 55 series Orion stretch wrapping equipment. The following calibration
instructions apply to all 66 & 55 series turntable and rotary tower type machinery,
but it will be important to note specific reference to your particular Orion model for
best calibration results.
The 850M and 850DM boards feature two selectable pre-set speeds (1 & 2), and
four potentiometers (marked 1,2,A and D).
The instructions are in the suggested order of adjustment, and intended to be made
after installation of the board in the control enclosure. Please refer to the attached
sketch of the board for identification of the adjustment points.
INSTALLATION
This unit is equipped with an aluminum chassis, which serves as a heatsink. This
should be oriented with the printed circuit board in a vertical plane for optimum
convection cooling.
Connectors are to .250” quick-disconnect terminals. Standard units require 120
VAC supply. AC line attaches to terminals AC1, AC2. Motor Armature attaches
to terminals DC+, DC-. The standard unit is suitable for permanent magnet shunt
style DC motors with 90 V armature rating.
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