Fagor DDS APS-24, Руководство по оборудованию

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   Selection criteria
5.
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Ref.1912
DDS
HARDWARE
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5.4 Capacitor module selection guide
The CM-1.75 is a capacitor module that increases the electrical capacitance
of the power bus in 7380 µF. It should be installed on machines with very
short duty cycles (very repetitive accelerations and decelerations) and with
low braking energy (e.g. a punch press).
The following table indicates how much extra energy W is stored in (Ws)
when the bus voltage increases from the rated value VBUS to the Ballast
circuit activating voltage (also called Crowbar activation voltage, VCrowbar).
Considering the different combinations of power supplies m CM-
1.75 and different mains voltage.
with units:
C in Farads
V
CROWBAR
in volts
V
BUS
=

2·Vmains in volts
W in Ws  jules
T. H5/15 Extra energy that may be stored (in Ws).
Modules Capac.
(µF)
Crowbar
activation
voltage
(V) Crowbar
deactivation
voltage
(V) W (Ws)
for
Vmains
400 V W (Ws)
for
Vmains
460 V
PS-25B4 820 770 760 111.9 69.6
PS-65A 940 770 760 128.3 79.8
XPS-25 1175 770 760 160.3 99.7
XPS-65 2520 770 760 343.8 213.8
PS-25B4+CM-1.75 8200 770 760 1118.9 695.7
PS-65A+CM-1.75 8320 770 760 1135.2 705.9
XPS-25+CM-1.75 8555 770 760 1167.3 725.9
XPS-65+CM-1.75 9900 770 760 1350.8 840.0
W= C/ 2 * [ V²
CROWB AR -
V²
B US
] (Ws )