siemens.com/servo-pump
Servo pump – the perfect solution
for hydraulic machines
Highest efficiency across the board
Based on standard components
The highest energy efficiency is a criterion that is becoming increasingly more significant when it comes to optimizing machines. This is also true for hydraulically driven
axes, for example, used in injection molding machines
or presses. In addition to the trend to either partially or
completely equip hydraulic machines with electric drives,
it also makes sense to optimize the hydraulic units.
Built using standard components:
SINAMICS S120 and distributed I/O
With our servo pump you can always rely on well-proven
and pretested know-how. This means that you profit from
a significantly faster and more cost-effective machine.
Our servo pump offers you the perfect solution to do
precisely this. It has a high dynamic performance,
increases your machine yield and slashes your energy
costs by up to 70%!
Your advantages at a glance:
•System with a high dynamic performance
•Can be simply integrated into your machine
•Highest energy efficiency with maximum benefits
•Higher machine yield
•Enormous reduction in noise
Answers for industry.
Siemens offers the optimum drive solution – not
only for electrical machines, but also energy-efficient electric servo drive technology for hydraulic
systems. This solution has been designed so that
installation and handling are extremely simple. It
is also compatible to the control signals typically
used for hydraulic units on these types of machines.
Principle of the pump control with induction motor and servomotor
s
s
P
P
Machine
U
Q prop. valve
vQ
v
U
Digital
control valve
Q
vQ
v
T
P
Your benefits:
P
P
T
P
P
U
vP P
•Uses less energy than conventional
hydraulic solutions
•The variable capacity pump can be replaced
by a “simpler“ pump with a controlled electric
servomotor
•Lower dependency on the oil temperature
•Quiet when compared to a variable capacity
pump or control valve
•Additional cost-saving through reduced cooling
requirement
•Demand-orientated control using SINAMICS
frequency converters
•The oil tank volume can be reduced
P
Q prop. valve
Digital
control valve
Q
P
vP Q
P
U
P
Q
Pump
P
Q
Asynchronous motor
Servomotor
Block diagram of a servo pump
Vset
Pset
Setpoints via bus control or analog
Pact
0...10V
U p
P
T
SINAMICS S120
OEM
Benefits at a glance:
Energy usage can be slashed by up to 70% when compared to a controlled induction motor
with variable capacity pump as a result of an improved efficiency
User
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One product: Servo-electric hydraulic units as replacement for a ”conventional“ solution
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The variable capacity pump is replaced by a ”simpler“ pump with a controlled electric servomotor
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One software and hardware concept for all power ranges
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Almost unlimited variance as a result of our extensive range of motors and converters
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Control behavior is similar to that of a completely electric machine
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Lower dependency on the oil temperature by compensating the pump characteristics
(pre-heating the machine, process stability)
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Less heat is dissipated into the system which means a smaller cooling system
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Significantly quieter
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Smaller envelope dimensions of the pump and motor
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Technical data:
Power range: From 7.5 kW – 90 kW, higher ratings on request
Motors: 1FK7... 1FT7... 1PH8…
Drive: SINAMICS S120 including servo pump application, an additional PLC is not required.
Several systems can be combined.
Siemens AG
Industry Sector
Motion Control Systems
P.O. Box 3180
91050 ERLANGEN
GERMANY
Subject to change without prior notice
Article No.: E20001-A1190-P620-X-7600
DISPO 06372
SCHÖ/10809304 B3KS.52.2.05 SB 09123.0
Printed in Germany
© Siemens AG 2014
The information provided in this brochure contains merely general descriptions or
characteristics of performance, which in case of actual use do not always apply as
described or which may change as a result of further development of the products.
An obligation to provide the respective characteristics shall only exist if expressly
agreed in the terms of contract.
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supplier companies whose use by third parties for their own purposes could violate
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