Electrical Connections
Power Connections
24
Document 51338 Rev. B 08/24/05 P/N 51338:B
Section 4:
Electrical Connections
4.1
Power Connections
The LCD-80F Annunciator can be powered by the FACP (refer to the
specific technical manual for the proper connection of the LCD-80F) or
from a remote UL listed, filtered power supply such as the
FCPS-24FS6/8. The power run to the annunciator must be power-lim-
ited but need not contain a power supervision relay since loss of power
is inherently supervised through loss of communication with the annun-
ciator. Maximum LCD-80F current draw from the power supply (under
normal and alarm conditions) is 64.3 mA. Maximum current draw from
the control panel's secondary power source (batteries) under loss of AC
power is 25 mA, since the LCD backlight is turned off during AC loss.
Backlighting is turned back on during AC loss only for alarm conditions
in the system.
Notes:
1. All connections are power-limited and supervised
2. 12 - 18 AWG (0.75 - 3.25 mm
2
) wire for 24 VDC circuit is
acceptable
3. Power wire distance limitation is set by 1.2 volt maximum line
drop from source to end of circuit.
4 3 2 1
7 6 5 4 3 2 1
1 2 3 4 5 6 7 8
Figure 4-1:
Power Connection
FD
U
80B
ds
.c
dr
P2
P1
no connection
+24 VDC IN
+24 VDC OUT
-24 VDC IN
-24 VDC OUT
Earth Ground Option
LCD-80F
