Curtiss-Wright EXLAR Tritex II AC, Installation And Service Manual

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Curtiss-Wright | Tritex II AC 90, 115 Rev. X PN39892 7/12/22 60
I/O Power Supply
In order to use Digital Outputs, an external 24Vdc nominal power
supply connected with positive side to one of the Field I/O + terminals
and negative side to one of the Field I/O Common terminals on the
Terminal Board. Typically terminals J2-1 and J2-2 are used for this
purpose. For connector option I, refer to the preceding table for pin
usage. The negative side of this power supply should be tied to PE near
the power supply. As with the Control Logic Supply, a fuse is necessary
unless power supply self-limits at 3A or less. The fuse should be rated
2A or less, depending on load and placed in the positive side.
Digital Inputs are typically powered from the same supply externally
through the contact or sourcing output providing the signal, but the only
requirement is that the supplies for Digital Outputs and all Digital Inputs
have the negative sides connected.
The same supply may be used for control logic power by installing
jumper wires from J2-9 to power terminal C+ and from J2-10 to power
terminal C-. The same power supply can also provide power for the
optional holding brake; option RB, by installing a jumper wire from J2-11
to J2-12. This jumper is factory installed with connector option I if a
holding brake is also present. A 2A fuse is necessary if the supply is
used for Control Logic or a brake.
For UL applications, the I/O power supply must be a UL recognized or
listed Class 2 power supply and shall be marked “Class 2” next to the
voltage rating of the device.
For applications to meet the CE Low Voltage Directive an approved
24V supply must be used and the negative side must be grounded to PE.
Actuator View
Cable View