SECTION 8
ELECTRICAL SYSTEM
p. 8-4
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8.1.2 Control Circuits and Logic
The operator controls the waterjet pump primarily through the digital
display panel. The digital interface (display) communicates with the PLC
controller located inside the electrical enclosure.
In order to avoid costly damage to the pump, automatic shutdown logic
and diagnostic messages are displayed to the operator as to the cause of
the impending shutdown. The inputs that trigger automatic shutdown
are:
• Motor Overload
• Motor Feedback Failure
• Oil Level Low
• Oil Temp High
• Low Booster Pressure
• Low Inlet Water Pressure
• Long Idle Time Shutdown
• Booster Temp High
• Left Overstroke Shutdown
• Right Overstroke Shutdown
• Topworks Overstroke Shutdown
For more information on these conditions and recovery procedures, refer
to Section 3, Operation, of this manual.
The functions listed below are available by connecting to terminal blocks
in the starter/control enclosure. An optional 37-pin circular connection
mounted in the side of electrical enclosure is available.
• Start
• Stop
• Emergency Stop (E-Stop)
• Pump RUN indicator light
• Pump malfunction light
• Remote 2-pressure
• Proportional Pressure (optional)
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