Wiring Considerations - MAGUIRE Weigh Scale Blender 4088 Installation Operation & Maintenance

Wiring Considerations

The wiring of your blender is very important to its proper operation. Electronics are very
susceptible to voltage spikes, static discharges and electromagnetic fields, all of which are very
common in plastics factories. To MINIMIZE these things, consider the following.
➢ The power supply should be a reliable, steady 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 than 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 than connection to larger central transformers.
➢ Avoid running the power supply line next to any high voltage power lines. An unshielded
power supply in a raceway next to other heavy power lines will pick up induced RF noise
and transfer it into the WSB steel enclosure potentially causing interference.
➢ 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.
➢ 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.
➢ 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.
Remote touchscreens will have a single cable running back to the blender. 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.
➢ 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.
➢ We use many internal tooth "STAR" washers in assembling the WSB to ensure good
ground between painted parts. Do not remove them.
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