Installation manual

In multiple PX-700 Installations, each PX-700 in the Installation should
have a dedicated KPT so that the keypads are not all powered from the
same unit (see Examples A and B on pages 2.4–2.5).
KPS Wiring The wiring code (Power, Data 1, Data 2, and Ground) is shown on both the
back plate of each keypad and on the rear panel of the PX-700. Some key-
pads have a color code on the back plate that you may choose to follow. Be
certain to follow EXACTLY the same wire code for all connections. Power
and ground should be one twisted pair, and data should be the other. All four
conductors must be connected to the keypad. To avoid shorting, do not leave
any of the wires disconnected or twisted together. The screw terminals must
make connection with bare wire, so be certain that none of the insulation on
the wires is caught in them.
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IMPORTANT: Terminate the cable on the keypad first, then the KPT and then
PX-700. This is the best way to avoid blowing the keypad fuse on the PX-700.
(See Wiring Information for more details.)
ATC Wiring An ATC Touchscreen Controller installation requires both the ATC and one
ATC RS-232 Interface Board per ATC with one exception as noted below
under “Four Conductor Wiring.”
1. Install the ATC RS-232 Interface Board at the head end of the
Installation (the equipment end).
2. Pull Cat 5 cable from the ATC location to the head end.
3. Terminate both ends of the Cat 5 cable with RJ-45 8 pin connectors (for
short runs or programming on the bench, you may use standard Ethernet
cable available at any computer supply store). It is critical that you pair
the Cat 5 cable wires as follows and that both ends of the cable are wired
identically:
• Pins 1 and 2 (RXD + and -)
• Pins 4 and 5 (RS-485 – [data 2] and + [data 1])
• Pins 3 and 6 (power and ground)
• Pins 7 and 8 (TXD + and -)
This pin number pattern is looking down at the flat side of the connector
(not the side with the locking tab). Make sure the colored pairs are the
same at both ends of the cable.
PHYSICAL INSTALLATION
3.4