McCain ATC eX NEMA - 2.5 ATC eX NEMA Connectors Box

McCain ATC eX NEMA Controller – User Manual 9
Version 1.0
2.5 ATC eX NEMA Connectors Box
Overview
In order to support all of the legacy hardware already implemented in the field, there is an optional
connector box for including the A, B and C connectors of a TS1 controller; D connector is a special
configuration connector that depends on the user needs or defined by the manufacturer.
This box converts the TS2 Type 1 controller into a TS2 Type 2 controller which supports the round
MilSpec connectors of the TS1 standard.
The controller uses an SPI bus in order to communicate to this box. Input and output pins use the NEMA
standard: 0 VDC = True, 24 VDC = False.
Currently there are two optional boxes that can be provided by McCain; the Standard McCain connector
Box and the Traconex compatible box. The only one difference between them is the special configuration
D connector.
See appendix E for details on the pin assignments.
Construction
The connector box consists of a chassis with a PCB assembly and harnesses for interconnecting it to the
controller. The PCB assembly contains all the circuitry and connectors for supporting the requirements of
the TS1 standard plus the required D connector.
The connectors A, B, C and D along with a fuse holder with a 24 VDC @ 1 A fuse are properly located
and labeled on the front of the box.
A three wires harness is used for receiving +24VDC, +5VDC and Logic Ground in order to feed all of the
I/O circuitry and supply the +24VDC to “A” connector for external use; the harness is attached to the
connector box and must be connected to the CONN BOX header located on Control Signals board
(M66450A).
A two wire harness is used for supplying AC power to the controller; it is attached to the connector box
and must be connected to the AC INPUT header located on Control Signals board (M66450A). A third
wire is used for connecting the chassis ground from the connector box to the chassis stud located on
controller.
A three wires harness is used for providing the Voltage Monitor (VM) and Fault Monitor (FM) signals from
the controller to the connector box; the harness is attached to the connector box and is connected to the
P1 header located on the Host board (M69945A).
A 10 position ribbon cable with plug connectors on both sides is used for the SPI communication between
the connector box and the controller; it is connected to the box on P7 header and to P9 header located on
the Host board (M69945A).