Power supplies
2.
Ref.1912
· 61 ·
DDS
HARDWARE
Terminal strip to connect the Ballast resistor
Regenerative power supplies also have a small Ballast circuit for dissipating
energy in case of an emergency. This emergency is issued when there is no
connection to mains and the Ballast circuit activating voltage is exceeded.
See table T. H2/14 in this chapter. Here are the two possible configurations:
Removing this jumper between Ri and L+ (factory setting) and not
connecting an external resistor between Re and L+ generates error code
E215 or E304 on the display.
The following table shows the values for gap, tightening torque, sections and
other interesting data of the feed-through terminals blocks for connecting the
Ballast resistor:
These power supplies carry a protection against over-temperature which
triggers error code
E301 on the display when reaching 105°C/221°F.
Derating curves
The power that may be dissipated through the internal ballast resistor
located inside the power supply XPS-25 depends on the ambient
temperature as determined by the derating curve.
The performance of the internal Ballast resistor of the regenerative power
supply XPS-65 does not suffer at high temperatures.
F. H2/20
Ballast resistor connection configurations.
T. H2/17 Feed-through terminal blocks for connecting the ballast resistor.
Technical data.
Connector data XPS-25 XPS-65
Min./max. tightening torque (N·m) 0.6/0.8 0.6/0.8
Screw thread M3 M3
Min./max. section (mm²) 0.2/4 0.2/4
Rated current In (A) 32 32
F. H2/21
Regenerative power supply, XPS-25. Derating curve.
Configuration of the
internal resistor
Configuration of the
external resistor
L-
L+
L-
L+
XPS-25
XPS-65
XPS-65
XPS-25
CONTROL
Ri Re L+ Ri Re L+
CONTROL
R.int
R.int
R.ext
ER+TH-X/X
ER+TH-18/X+FAN
INTERNAL BALLAST
POWER (W)
XPS-25
600
520
35/95 45/113
°C/°F
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