Moog G393-004, Руководство по эксплуатации

Страница: 78 / 112

78
MSD Multi-Axis System Operation Manual DC-AC Servo Drive
9.6 Cost-effectiveness calculation
Along with the functional advantages, a multi-axis system also offers ecological and
financial advantages due to the energy saving. Depending on the application, higher
investment costs are quickly compensated by the reduced power consumption.
Example with three axes
Individual
AC-AC axes
AC-AC Servo Drive as
supply
Power Supply Unit
Components
3x G392-024/G395-024
3x mains choke
3x braking resistor
2x G393-024/G397-026
1x G392-060/G395-070 with
- Mains choke
- Braking resistor
3x G393-024/G397-026
1x G396-050
1x LCL set
Investment costs 100 % 108 % 163 %
Energy saving 1) - 5 % 10 %
Electricity price 0.1264 €/kWh
2)
Operating time 16 hours/day, 20 days/month
Amortisation
of the
additional
costs after
- 6 months 23 months
1) Compared to individual AC axes, this value is to be determined individually for each application
2) Bundesverband der Energie-Abnehmer e.V., German electricity price comparison I/2011 for medium-sized industrial custom-
ers, average electricity price in former West German states
Table 9.2 Cost-effectiveness calculation for three axes
9.5 Functional comparison
As a selection aid, the technical and functional differences between operation with an
AC-AC Servo Drive as the supply and operation with a Power Supply Unit are compared.
Feature
AC-AC Servo
Drive as supply
Power Supply
Unit
Operation on different mains voltages around the world possible

1)

Regeneration possible (sinusoidal)

Operation with any simultaneity factor possible
 
DC link coupling via busbar system (Size 1 to Size 5)
 
Energy equalisation by central DC link
 
Controlled stop on power failure
 
Requires external step-up choke and input choke

Requires external braking resistor
  2)
Air cooling
 
Liquid cooling
 
Higher DC link voltage (650 V/770 V)

Reactive power compensation

EtherCAT, SERCOS II & III, PROFINET IRT, VARAN, CANopen,
PROFIBUS-DPV1
 
Sin/Cos encoder, TTL encoder simulation/encoder
 

= applicable,

= partially applicable
1) With autotransformer
2) Possibly for emergency operation on power failure
Table 9.1 Functional comparison
moog
Id. no.: CA97554-001 0 5 /2017
9 Planning