Komatsu Galeo PC800-8 Shop Manual page 258

SEN00386-03
2. Electronic OLSS function
Pump control system
• Interconnected control of all pumps is carried out
by one TVC valve.
• P mode: Total horsepower control by sensing
engine speed
• E mode: Total horsepower control by sensing
engine speed
• Emergency pump drive circuit: Constant delivery
control
• The pump controller calculates each pump pres-
sure and each J/S differential pressure and
sends the capacity command value to the EPC
valve of each pump to control the delivery of
each pump.
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10 Structure, function and maintenance standard
PC800, 850-8