M A G U I R E P R O D U C T S , I N C .
Edition: August 6, 2014
16
W E I G H S C A L E B L E N D E R
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Wiring Considerations
The wiring of your blender is very important to its proper operation. Electronics are very
susceptible to voltage spikes and static charges, both of which are very common in plastics
factories. To MINIMIZE these things, consider the following.
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The power supply should be solid; a strong supply, not limited by a "just adequate" control
transformer. A source of voltage that comes from a large transformer that supplies a large
portion of the plant is better then a small power supply transformer that is intended to
supply only this device. Power supplies, even though they may be "isolation" transformers,
will still pass all voltage spikes right through. Their small size limits their ability to dampen
RF (Radio Frequency) noise that is often induced into the system from outside sources.
This proves worse then connection to larger central transformers.
¾
Avoid running the power supply line along side any heavy power lines. An unshielded power supply
in a raceway along side other heavy power lines will pick up induced RF noise and transfer it into
the WSB steel enclosure causing computer trouble.
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Long extension cords should be avoided. They also reduce the ability to provide a dampening
effect on spikes and static. The further the equipment is from a substantial power source, the more
susceptible it is to spikes.
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The CONTROLLER and the WSB frame MUST share the same GROUND PATH. This is why you
MUST plug the controller into the OUTLET that is provided ON THE FRAME.
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REMOTE SYSTEMS. If you have your controller mounted in a remote location, you will have a
number of power and signal cords running between the frame and the controller. BE SURE that
the LOW VOLTAGE lines are NOT BUNDLED to the HIGH VOLTAGE lines and keep them away
from other nearby electrical lines.
LOW VOLTAGE lines are:
Load Cell cable, Level Sensor cord,
Air Solenoid cable, and Printer and communication cables.
HIGH VOLTAGE lines are:
Mixer motor cable, Feeder motors,
and MAIN POWER line.
Keep these sets of cables SEPARATED.
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VACUUM LOADER CONVEYING LINES. Keep them away from all electrical lines, particularly the
Load Cell lines. Conveying plastic produces extreme static sources. A power supply line, even in
conduit, that runs next to a vacuum line, can introduce extreme static pulses into the processor.
Keep conveying lines SEPARATED from electrical supply lines.
¾
We use many internal tooth "STAR" washers in assembling the WSB to ensure good ground
between painted parts. Do not remove them.
PROCEED TO: CHECK OUT PROCEDURE NEXT PAGE
Summary of Contents for Weigh Scale Blender WSB
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