Notifier LCD-80 User Manual

PN 15037:D2 9/9/02 15
Figure 2-3 Connecting the EIA-485 Loop (ACS Mode)
Cabinet
EIA-485
(-)
(+)
Terminating
Resistor
Observe the following requirements when
connecting the EIA-485 circuit:
• LCD-80s require operating power! C
onnect 25
VDC
power to TB1 terminal 3(+) and TB1
terminal 4 (-). Power connections are super
vised
and
power-limited. A maximum of four LCD-
80s
may be connected to this circuit when powered
by the AF
P-
200.
•
The EIA-485 loop can support up to 32 de
vices
on th
e loop subject to power
supply loading
limitations (ACS, LDM,
and LCD-type devices)
• 6000 feet maximum loop length from the CPU
to
the last device.
•
Do not “T-Tap” the EIA-
485 circuit—it will not
function pro
perly. Wire as illustrated.
• Use twisted, shielded pair
cable with a
character
istic impedance of app
roximately 120
ohms.
•
EIA-485: 5.5 VDC max; 60 mA max.
• A UL listed 120-ohm terminating resistor (R-120)
must be installed on the last device on the EIA-
485 circuit.
• Set SW2 on the AFP-200 to “ACS” position (right-
hand position)
• The LCD-80 start address must be set to address
01. Switch SW2 must be set to “1” and SW3-1
and
SW3-2 must be set to “Off”. Set the LCD-
80
to a
size of 128 points. To use a 40-ch
aracter
display, set SW5 “Off” and
SW6 “On”
.
•
Refer to Appendix A for shield terminatio
n
instr
uctions.
• Terminal block connections on the Fire Alar
m
Co
ntrol Panel are listed in Table 2-3; for
illustrations, refer to your FA
CP manual.
•
A separate reference wire is required for
AM2020AFP
1010 applications using ACS
annu
nciators which are not in the sa
me backbox
as the fire a
larm control panel’s CPU. Re
fer to
the AM20
20/AFP1010 manual for details.
To EIA-485
terminals on
CPU

Notifier LCD-80 Specifications

General

Brand	Notifier
Model	LCD-80
Category	Monitor
Language	English