Siemens Sinumerik 840D Series Function Manual page 44
Hla module
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- Function manual (920 pages) ,
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2 Configuration
2.3 Configuring the hydraulic drive
Cooling
2-44
Since considerable power losses that cannot be compensated for solely
through oil reservoir dissipation occur when the flow is throttled via the control
edges on the valve, additional oil/air or oil/water heat exchangers must be pro-
vided in most cases.
P
Variable displacement pump with pressure regulator
Pressure-relief valve (protection)
Accumulator with fail-safe circuit
Filters in pressure line
Filters in return line
Oil/water heat exchanger
Oil reservoir
Fig. 2-15
Overview of typical hydraulic power unit
SINUMERIK 840D/SIMODRIVE 611 digital, HLA Module (FBHLA) - 10.03 Edition
Q
M
(GND)
Siemens AG, 2003. All rights reserved
10.03
°C
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