NFS2-640/E Installation Manual —
P/N 52741:P2 7/10/14
15
System Components
System Overview
NAC
LEDs
Disable
- Enable Switches for
Backup Alar
m (F
LE
D1
0
– SLC Lo
op 1
Ground F
ault LED
LED
9
– SLC Lo
op 2
Ground F
ault LED
LED
5
- Sup
erv
is
ory
LED
LED
7
- Pre-Al
arm LED
LED6
- Se
cu
rity
L
E
D
LE
D3
- Point Disa
bled L
E
D
LED
2
- Signals Silenced LED
LED4
-
System T
rouble LED
LED8
-
Fire Alarm LED
LED
1
- Pow
er-on
LED (AC or
batter
y)
System Swit
ches for
No-
Keyboar
d Operation
SW5
-
Acknowledge
SW6
-
Silence
SW7
- R
ese
t
CPU2
640-
KAP
S-2
.wmf, CPU2-
640
-LE
Ds.wmf
JP
1
- Ground
Fault
Jumper
(SLC#1)
F4 -
AC Fu
se
SW1 -
Gr
ound F
ault D
etect
ion Enab
le/Disable
LED
3 -
Eart
h Fault LED (
general boar
d grou
nd fault)
Figure 2.3 CPU2-640/CPU2-640E and Power-Supply: Jumpers, LEDs and Switches
LED5 -
+24V Aux LED
LED4 -
AC Power LED
LED6 -
+5V Aux
LED
LED
1 -
Logic Power LED
LED2 -
Tr
ouble
LED
