FX70 Supervisory Controller Installation Instructions
14
Contact Inputs
Three contact inputs (CIs) are on a 6-position
connector next to the 2-position external battery
connector. CIs typically monitor normally closed (N.C.)
alarm contacts, if available on a UPS and/or the door
tamper switch of a nearby enclosure. These CIs are
unsupervised—no end-of-line resistors are required.
Figure 11 shows example wiring to all three CIs of the
controller.
External 12 V Backup Battery
A 2-position connector provides support for an external
12 V SLA type rechargeable battery. For more details,
see
Note:
The minimum wire size for battery connections:
•
18 AWG (1.0 mm
2
) for up to 4 ft (1.22 m)
Figure 11: Contact Input Wiring to an FX70
Tamper
Switch
FX70 Supervisory
Controller
Low Battery (if available)
Power Fail (if available)
UPS Alarm Contacts
F
IG:
fx
70
_c
ntc
t_
inp
t_
w
ir
FX70 Supervisory Controller
12 V Sealed
Lead Acid
Backup Battery(ies)
15 VDC Power and
Backup Battery Passed
Through 6-position
Connector
FI
G
:f
x
7
0_SLA_B
ku
p
_
B
at
t_C
on
ne
ct
io
n
Figure 12: Sealed Lead-Acid (SLA) Backup Battery Connection on FX70
