Exlar Curtiss-Wright Tritex II Series, Installation And Service Manual

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Curtiss-Wright | TRITEX II AC 75 Rev. K PN61928 7/12/2022 44
Logic and IO Power Supply
The 75 mm Tritex contains a built in 24 Volt power supply, this supply
can be used to power the optional internal brake as well as provide some
power for the IO. The maximum current the internal 24 V can provide is
600 mA. The brake will use 500 mA that only leaves 100 mA available
for other IO if a brake is provided.
Optionally an external 24 VDC power supply may be connected to the
IO+V and IO Com connections, see diagram below. When an external
24 Volt supply is connected it effectively bypasses the internal 24 Volt
supply and provides power for logic backup, IO and the brake. If the
external 24 Volt supply remains powered when the main Tritex AC power
is removed it will maintain position information (position feedback is still
powered and active) so re-homing is not required and keeps
communications active to networked system components. A fuse is
necessary unless power supply self-limits at 3A or less.
Control Logic Power Supply Wiring and Fusing
Volts Amps Fuse Wire
24V dc +/- 10%. 1 2 Amp, if power supply is
not limited at 3A or less
18 AWG (0.8 mm^2)
Wiring for External 24 Volt Supply
CAUTION
It is important that the 24 VDC power supply or logic and I/O
is connected to the circuit common and also shall be
externally grounded to PE.