American Dynamics AD2096A, Installation And Operating Instructions Manual

Page: 9 / 24

CONNECTIONS
Alarm Inputs
Eleven 12-pin connectors are provided on the rear panel of the
AD2096A for alarm inputs. A mating screw-terminal
connector, below, is supplied for each rear panel connector.
Each connector is labeled with an alarm number (1 - 64), an
"A", and a ground symbol. The "A" stands for alarm contact
and the ground symbol for ground. Each alarm input connector
contact open circuit voltage is 5.0 VDC. Closed circuit current
is 0.2 mA, and a normally closed condition requires less than
15K ohms between “A” and ground.
Connections are made by inserting alarm contact and ground
wires into the slots of the mating connectors and tightening the
hold down screws. When all wires have been connected, insert
the 12-pin connectors into the rear panel connectors.
Alarm Relay Output
The lower right connector on the rear of the AD2096A is a 12-
pin connector which provides access to both Normally-Open
(NO) and Normally-Closed (NC) contacts of an internal alarm
relay. This relay is active when any alarm input is received
(see page 4). The maximum relay contact ratings are: 0.25
amps current @ 30 Volts DC or RMS, and 10 VA power. A
mating screw-terminal connector is provided.
RS-232 Connectors
The two RS-232 COM connectors on the rear panel of the
AD2096A are 8-pin, modular type RJ-45 connectors. One (1)
8-pin terminal box 2113-0019-01 and one (1) 7-foot modular
cable 6003-0047-02 are supplied with each AD096A for
connections to these ports.
The RS-232 port labeled COM OUTPUT is connected to a
switching system input port or to another AD2096A AIU (see
Cascading, below) using the supplied modular cable when
distances between the units are no further than 7' apart.
For connection where distances exceed 7', or for connection to
an AD1995 MegaPower CPU, the terminal box is used. Table
4 gives the pinouts for the terminal box. The maximum
distance between terminal boxes shall not exceed 1000' (330m)
using 18 AWG shielded cable, Belden 8770 or equivalent.
Table 4 - RS-232 Terminal Box Pinouts
Pin Function
1 No Connection
2 Shield
3 No Connection
4 RCD
5 XMIT
6 No Connection
7 GND
8 No Connection
Cascading Multiple Units
If more than 64 alarm contacts are required, multiple
AD2096A units can be cascaded. If the units are within 7' of
the other, connect a modular cable from the COM OUTPUT
port of the last AD2096A unit to the COM INPUT port of the
next unit. If the AD2096A units are greater than 7' apart,
terminal boxes must be used for port connections. Refer to the
Typical System Connection for illustration of cascading.
3
AD2096A ALARM INTERFACE UNIT
A
A
A
A
A
A
HOLD DOWN SCREWS
IN
SE
RT
CO
NNE
CT
OR
TH
IS
DI
RE
CT
IO
N
Figure 4 - Alarm Input Terminal Connector
HOLD DOWN SCREWS
IN
SE
RT
CO
NNE
CT
OR
TH
IS
DI
RE
CT
IO
N
N
O
N
C
C
M
Figure 5 - Alarm Relay Terminal Connector
1
2
3
4 5
6
7
8
Figure 6 - Terminal Box 2113-0019-01
Use NEC Class 2 wiring only for all external
connector pin connections. The wiring should also
conform to all local codes.
!