Electrical Connections; Power Connections - Fire-Lite LCD-80FC Manual

Electrical Connections

Section 4:
4.1

Power Connections

The LCD-80FC Indicator can be powered by the FACP (refer to the spe-
cific technical manual for the proper connection of the LCD-80FC) or
from a remote UL listed, filtered power supply such as the
FCPS-24FS6/8. The power run to the indicator must be power-limited
but need not contain a power supervision relay since loss of power is
inherently supervised through loss of communication with the indicator.
Maximum LCD-80FC current draw from the power supply (under nor-
mal 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.
Figure 4-1: Power Connection
LCD-80FC
P2
Earth Ground Option
-24 VDC OUT
-24 VDC IN
+24 VDC OUT
+24 VDC IN
no connection
Notes:
1. All connections are power-limited and supervised
2. 12 - 18 AWG (0.75 - 3.25 mm
acceptable
3. Power wire distance limitation is set by 1.2 volt maximum line
drop from source to end of circuit.
22
Document 53244 Rev. A 03/14/08 P/N 53244:A
Electrical Connections
1 2 3 4 5 6 7 8
7 6 5 4 3 2 1
2
) wire for 24 VDC circuit is
Power Connections
P1
4 3 2 1