4. Connect the Cat 5 cable to the ATC RS-232 Interface Board and the
rear of the ATC.
5. Run 4-conductor wire from the keypad connector on the ATC RS-232
Interface Board to the appropriate keypad connector on a KPT.
☞
IMPORTANT NOTE:
The PX-700 is designed to power up to 20 KPS keypads
at 50mA each (to a total of 1A). The ATC keypad draws 150mA, equivalent to
three (3) KPS keypad loads. Therefore, to determine how many ATCs and KPSs
can be powered from any one PX-700 in an Installation, add the number of
KPS keypads times one (1) plus the number of ATC keypads times three (3). The
total may not be greater than 20. If the total is higher, you will need to power
some number of ATC keypads from AC to DC adapters to reduce the number of
keypads powered by the PX-700 to 20 or less.
e
l
b
a
C
5
t
a
C
e
l
b
a
C
5
t
a
C
8 7 6 5 4 3 2 1
Front
Top
TXD –
TXD +
Ground
Power
Data 1
Data 2
RXD –
RXD +
PHYSICAL INSTALLATION
3.5