PIM-00004
△
1
[Operation Manual]
5/61
DAIKIN INDUSTRIES, LTD.
[1.
Introduction]
Thank you for selecting IPM Motor Drive Hydraulic Unit <Super Unit>.
Using the oil hydraulic technology and energy-saving IPM motor drive system that DAIKIN originally
developed, the IPM Motor Drive Hydraulic Unit <Super Unit> provides overwhelmingly excellent energy
conservation performance and advanced functions.
Before using the SUT Series <Super Unit>, please read this manual thoroughly, and handle and maintain this
unit properly, so that this unit can retain excellent performance for a long period.
The components of this unit may be modified for the purpose of quality/performance improvement or other
reasons. In such a case, some parts of this product may be different from those described in this manual.
[2.
Features and Structure]
(1) Energy conservation
Since the motor unit uses the highly efficient IPM motor drive system that DAIKIN originally
developed, the Super Unit provides extremely high energy efficiency.
The Super Unit uses the autonomously-switching dual pump system that enables autonomous control
of combination mode/single mode switching according to load pressure by using the dual
fixed-capacity pumps (small-capacity and large-capacity pumps) and the switching valve.
When a large flow rate is required, the dual fixed-capacity pumps (small-capacity and high-capacity
pumps) are operated together at a high rpm. When a large flow rate is not required (during a pressure
holding period), only the small-capacity pump is operated at a low rpm. Thus, the Super Unit can
remarkably reduce energy consumption.
M
qL
0
PL
PH
qH
Combination mode/single mode
switching solenoid valve drive
Controller
Discharge
Check valve with
orifice
Flow controller
Relief valve for
high-pressure pump
Relief valve for
low-pressure pump
Pressure sensor
High-pressure
small-capacity pump
Suction
Low-pressure
large-capacity pump
IPM motor
Drain
Rotating position
Combination of large-capacity
and small-capacity pumps
Single operation of
high-pressure
Pressure
Flow rate
16 patterns of pressure
and flow rate settings can
be specified.