Siemens SINAMICS S120 System Manual page 31

Criterion
Noise
Acceleration character-
istics
Drive cooling
Sensitivity to ferromag-
netic swarf
Table 2- 2
Electrical
Speed
Velocity
Current
DC link voltage
Power
Transistor/power unit
Motor
Hydraulic Drive
System Manual, 04/2015, 6SL3097-4BA00-0BP1
Direct electric drive
Linear guide noise in opera-
tion
Maximum 45 g
Absolutely essential
High
Analogy of characteristic values
2.3 Comparison of electric and hydraulic drive systems
Electric drive with leadscrew
Servomotor and leadscrew
noise in operation
Maximum 1 g
Only required at high speeds
Low
Hydraulic
Speed
Velocity
Flow rate
System pressure
Flow rate × valve pressure difference
Valve
Drive cylinder
System overview
Hydraulic drive
Possible noise caused by flow
•
through the valve
Pump noise of the hydraulic
•
unit
Maximum 2 g
Required in some cases, only in
the unit
Low
31