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CPU-2000
16
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2.2.2 Sensiscan 2000
Remove all power from the control panel by disconnecting AC and batteries. Install
the three supplied nylon support posts for the top and bottom left of the UDACT-F,
one aluminum/nylon and one aluminum standoff in the CHS-4 chassis slot in which the
UDACT-F is to be installed (refer to Figure 2-4). Position the UDACT-F on the standoffs
and secure on aluminum standoff with a #6-32 screw. Alternatively, the UDACT-F
may be mounted remotely using an ABS-8RF or UBS-1F enclosure. Ferrite cores are
recommended for this application. Refer to Figure 2-3 and the accompanying Notes
for wiring alternatives.
Connect the communication line between the EIA-485 terminal block on the CPU-2000
and TB-1 terminals 3 and 4 on the UDACT-F being certain to observe polarity (refer to
Figure 2-5). Recommended wire is 12 AWG to 18 AWG twisted pair. If no other devices
are connected to the EIA-485, install a 120 ohm EOL resistor across UDACT-F TB1
terminals 3 and 4.
Connect the supplied Ground Strap from the UDACT-F Earth Ground terminal on TB3
to the CHS-4 chassis. Connect 24VDC filtered, regulated, non-resettable power to TB-
1 terminals 1 and 2 on the UDACT-F (refer to Figure 2-6).
CHS-4
Aluminum Standoff
and screw
Figure 2-4: UDACT-F Mounting in CHS-4
Document # 50049 Rev D 5/2/97 P/N 50049:D
firealarmresources.com
UDACT-F
Nylon
Support
Posts
Ground
Strap
Nylon &
Aluminum
Standoff
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