1838-066-E-12-16
11
J1
1
2
3
4
5
6
7
8
J4
1.8 Main Terminal Description
1.9 1838 Interface Board
1970-010
Relay 1
(Access Control Device)
Relay 2
(Access Control Device)
Optional Back-Up
Battery Power
Emergency
and/or Postal
Entry Switch
1.
Phone In (Negative - Ring)
2.
Phone In (Positive - Tip)
3.
Ground
(Required)
4.
Not
Used
5.
Not
Used
6.
Not
Used
7.
Switch Input Relay 1. A switch closure across terminals 7 & 9
will activate relay 1 for its programmed strike time.
8.
Switch Input Relay 2. A switch closure across terminals 8 & 9
will activate relay 2 for its programmed strike time.
9.
- 12 VDC Battery Negative. Also
Common
for terminals 7 & 8.
10.
+ 12 VDC Battery Positive.
11.
Relay 1 Normally Open
12.
Relay 1 Normally Closed
13.
Relay 1
Common
14.
Relay 2 Normally Open
15.
Relay 2 Normally Closed
16.
Relay 2
Common
17.
16.5 VAC Input Power
18.
16.5 VAC Input Power
The 1838 interface board (1972-010) is piggybacked onto the main unit’s Plus circuit board (1970-010). The interface board
provides additional connections to the unit for keypads, card readers and/or RF receivers using RS-485 communication
protocol.
The 1838 can be programmed via a PC using a network or modem connection. An RJ-45 jack (Cat5) is provided on the
interface board for network connections.
Use the RS-485 terminals to add up to six (6) card readers, keypads and/or RF receivers to the 1838. These devices must be
wired in a daisy-chain format with a maximum wire run distance of 4000 feet. We recommend that you use Cat5e wire for all
RS-485 wire runs.
DO NOT power RS-485 devices from the 1838. These devices must be supplied with their own power source.
Refer to the
individual device wiring instructions for connection information and wiring guidelines for these products.
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
MIC VOL
KEYPAD
MASTER
CODE
J1
J3
14
13
12
11
10
9
8
7
6
5
4
3
2
1
1.9.1 RS-485 8-Pin Connector Description
RS-485 DATA A (+)
RS-485 DATA B (-)
RS-485 Common
M
M
ON
MODEM / TCP ENB
1972-010
SW1
ON
SW2
TERMINATION
1
2
3
4
5
6
7
8
J1
RJ-45
Jack
(Cat5)
J4
LAN CONNECTION
DATA TRANSMIT
BAD DNS
LAN DOWN
RS-485 RX
PHONE LINE
IN USE
1970-010
WARNING
Maximum
input voltage to terminals
9 and 10 is 14.5 Volts DC.
BATT
CHARGE
BATT CHARGE LED: When
battery is connected to 9
and 10, Green LED will
light when charging and
turn OFF when charged.
Over Voltage Power Note:
OV LED will light up if too much
power is applied to circuit board.
OV
Input Power
(Transformer)
(Optional - Phone modem
programming or remote
touch-tone phone control only)
Terminals 4-8
are not used
with the 1838.
Phone In
(Twisted Pair)
Wireless
Adapter
OR
DO NOT use 24V.
Summary of Contents for 1838 Access Plus
Page 39: ...1838 066 E 12 16 35...
