Installation manual

SYSTEM 238 Installation Manual
4
Keypad Wiring
+
When operated as a Super-
vised Loop, an open will be
reported as a Trouble.
Whether the system is armed
or disarmed. A short on a
Supervised Loop will be re-
ported as an alarm if the
system is armed, but will have
no effect if the system is dis-
armed.
-
Supervised Loop
N.C.
Trouble
N.O.
Alarm
Loop 8
Terminals C and Z8 are a standard loop that can also power 2-wire
devices. It supplies 10 - 12.5 VDC at 50 mA. Use Loop 8 to power
2-wire glass-breaks and smoke detectors.
The SYSTEM 238 is capable of addressing up to 8 Alpha keypads.
LED keypads do not require addressing. Each LED keypad uses 35
mA of current. Each LCD keypad uses 64 mA of current. See
Available Power for current limitations. See page 5 for additional
information on keypad setup.
LOOP INPUTS
Each loop is independently
configured through pro-
gramming. Loops can be
wired with an open circuit
switch, or closed circuit
switch, or with a 2.2K ohm
end-of-line (EOL) resistor.
When programmed as EOL,
either an open or a short will
be reported as an alarm if
the system is in an armed
state.
-
+
N.O.
Alarm
N.C.
Alarm
EOL Loop
Terminal Labels:
Z 1 - Z 8 & C
Fuse F3
The KEY+ terminal is protected by a 0.75 amp, 3 AG, fast-blow fuse
(F3).
Connect the keypad to the control panel as shown in the diagram
above. The Alpha Plus keypad also has a jumper, located near the
piezo, that must be removed when used with the System 238 control
panel.
1. Position the tamper switch inside the cabinet at the lower right
corner of the cabinet. For the wall tamper, the plunger should go
through the small hole in the back of the cabinet. For the door
tamper, the plunger should face out from the cabinet. Refer to
the drawing below.
2. Connect the tamper switches in series and wire the tamper
terminals to a dedicated zone of the control panel.
3. Program the dedicated zone as desired: NC, EOL, 24-hour, etc.
Once the tamper switches are installed, opening the cabinet door or
removing the cabinet from the wall will result in a tamper signal at the
panel.
TAMPER SWITCH INSTALLATION
C&K has designed the SYSTEM 238 cabinet to use the Ademco
Model 19 tamper switch. The cabinet is constructed in order to
accommodate two switches. One tamper for the cover and a second
switch for a wall tamper. To install the tamper switches:
Tamper Switches installed in the SYSTEM 238 cabinet
LEAD-ACID
BATTERY
PRINTED CIRCUIT
BOARD
WALL
TAMPER SWITCH
DOOR
TAMPER SWITCH
TELEPHONE INTERFACE
Connect the SYSTEM 238 to the phone line using the
9.X PCF cord (not included). The cord has an 8-pin
telco plug on one end. Plug the telco end directly into
the phone companies RJ31 or RJ38X jack. Connect
the flying leads to the SYSTEM 238 PCB as shown
below and listed on the next page.
TB1
RJ-38X Wiring
Diagram
T
R
T1
R1
Incoming
Telco Line
1
23
4
8
7
6
5
T1
R1
T1 = Seized Tip
R1 = Seized
Ring
Red
Green
Protector
Ring
Tip
Tamper Jumper
House
Phones