Exlar Tritex II DC Series, Installation And Service Manual

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Curtiss-Wright | Tritex II DC Rev. J PN49220 2/8/2016 30
Un-Regulated Power Supply for Logic and Bus power, with a Shunt
Regulator Such as Exlar TTSR1
Reversing polarity of the Bus Power (+) and Power
Common (-) will cause a short circuit, which must be
protected by the input fuse. See fusing below
If a fuse is not installed the drive could be permanently damaged.
Power Supply Wiring and Fusing
Fuse Wire
Bus Power
20 amp 125 V dc. Bussmann
type ABC or similar.
12 gauge (4 mm
2
)
Logic Power
2 amp 125 V dc. Bussmann
type ABC or similar.
18 gauge (1,5 mm
2
)
Twelve gauge wire is recommended for bus power to reduce voltage
drop across the wire during peak power demands. If the application does
not require high peak or continuous power, the wire gauge can be
reduced, with a corresponding reduction in fuse rating.
If the wire gauge for bus power is reduced the fuse
Amp rating must also be reduced in accordance with
wire size, type and local regulations.
CAUTION
___________________________
WARNING
Fuse Fuse
Fuse
AC
Input
12/ 24 /48 V DC
Un-Regulated
Power Supply
+
-
Shunt
Regulator
Logic Power
Bus Power
Power Common
GND
E-Stop