SECTION 8
ELECTRICAL SYSTEM
Jan 2001
Page 8-2
05114632
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 prevent costly damage to the pump, automatic shutdown logic and
diagnostic messages are displayed to the operator as to the cause of the
impending shutdown. Some of the inputs that trigger automatic shutdown:
• Low hydraulic reservoir level
• High hydraulic oil temperature
• High boost pump temperature
• HP intensifiers cycling out-of-tolerance condition
For more information on these conditions and recovery procedures, refer to
Section 3, Operation, of this manual.
The following terminal blocks are provided in order to interface with the remote
operator’s station
• Start
• Stop
• Emergency Stop (E-Stop)
• Pump RUN indicator light
• Pump malfunction light
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