|
Save energy
consumption ■ On-demand oil
supply, avoid throttling and overflow ■ Standby almost have
no consumption |
Save cost ■ Compared with the
electric drive system, do not need the expensive machinery ■ Compared with the
valve control system, save 75% hydraulic oil |
|
Save noise ■ Use Inner gear pump
and four quadrant plunger pump ■ Standby almost
have no noise |
Save volume ■ Compared with the
open hydraulic circuit, save 75% tank volume ■ Compared with other
drive methods,easy to allocate to achieve the miniaturization of
components |
|
Improve control
performance ■ Precisely control
torque and speed,precisely control pressure and fl ow ■ Little oil
temperature change, to improve |
Easy to maintain ■ Compared with the
electric drive system, do not need to periodic lubricate the ball screw ■ Compared with servo
valve system, reduce the requirement of the hydraulic oil, prolong the life
of the components |
|
Electric-hydraulic
hybrid servo pump system ■ The closed loop
control of position,speed, pressure is realized by controlling the permanent
magnet synchronous servo motor to drive the hydraulic pump. The system combines
the advantages of hydraulic control and servo control. |
|
High Energy Saving
■ ESTUN servo pump system realizes speed and pressure double closed loop control by AC servo drive and permanent magnet synchronic servo motor driving internal gear pump. The output fl ow rate is determined by servo motor speed and ration internal gear pump’s output volume. The system pressure is real-time measured by another pressure sensor. Compared with constant rate pump or variable pump, it can obviously reduce the electric power charge, save cooling water and reduce the heat created by wasted power.
High Performance
■ 【High Effectiveness】High quality imported brand internal gear pump is specially designed
for injection machine, die-casting machine and relevant electro-hybrid
realms applications. High speed permanent synchronization motor is used to
increase pump fl ow rate and running speed of whole machine. Low release,
low noise and high effectiveness are guaranteed.
■ 【High Dynamic Performance】ESTUN ProNet series
AC servo system is applied to offer high overload capacity. No-load
system response time is 20ms or faster.
High precision pressure sensor HM18 is adapted to inspect system pressure.
Resolver is selected as feedback component of servo motor. The servo pump
system's inspection precision to pressure reference and feedback can reach 12
bits, pressure surge is lower than ±0.5bar on low speed
running and the inspection precision to resolver can reach 65536 P/R.
■ 【High Precision】The system control cycle can reach 0.1ms, which can match the
request of high precision production.
Specialization
■ ESTUN has concentrated on R&D of AC servo system for many
years. ESTUN has owned many AC servo system key technologies.
The power range of servo system for injection machine, die-casting machine and
relevant electro-hybrid realms applications is from 8.7kW to 55kW so that
it can be used in most applications. The company can also customize and develop
for clients to match the special request of different clients.
ALPHA has many years of experience in R&D of hydraulic pressure relevant
products, a professional team by many experienced engineers and senior
consultants. They can offer total solution according to the request of different
clients.
Facilitation
with special PC softwares avaliable,following functions are achieved:
■ parameter managemeng
Fast and convenient operations to all parameters are
acailable,such as editing,transmission,comparison and initialixation.
■ Monitoring
Real time monitoring of all I/O signals,alarms of the present and history
record and system status,etc.
■ Real time sampling
Real time sampling the curves of pressure and fl ow facilitates the adjustment
and analysis.
■ Adjusting
Fast adjustment of gains is avaliable.
Simple test is available when theres no position or speed reference input.
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As a leading CNC system supplier in China, WEIHONG is now take a big step to expanding the overseas market.