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Document # 50075 Rev B 3/13/95
UNI•COM mounting in Unimode II
Remove all power from the Unimode II by disconnecting AC and batteries. Install the three supplied nylon support
posts for the top and bottom left of the UNI•COM, one aluminum/nylon and one aluminum standoff in the CHS-4 chassis
slot in which the UNI•COM is to be installed (refer to Figure F-2). Position the UNI•COM on the standoffs and secure
on aluminum standoff with a #6-32 screw.
Connect the communication line between the EIA-485 terminal block on the CPU-5000 and TB-1 terminals 3 and 4 on
the UNI•COM being certain to observe polarity (refer to Figure F-3). 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 UNI•COM TB1 terminals
3 and 4.
Connect the supplied Ground Strap from the UNI•COM Earth Ground terminal on TB3 to the CHS-4 chassis. Connect
24 VDC filtered, regulated power to TB1 terminals 1 and 2 on the UNI•COM (refer to Figure F-4).
Figure F-2: UNI•COM Mounting in CHS-4
Nylon and
Aluminum Standoff
UNI•COM
CPU-5000 CHS-4
Nylon Support Posts
Ground Strap
Aluminum
Standoff and
Screw
The UNI•COM is capable of reporting 120 zones when used with the Unimode II. The UNI•COM
reports alarms and troubles on inputs but reports only troubles on outputs. Beware of 'gaps' in the
reporting of input circuits. The gaps depend upon the mounting location and the Unimode II system
configuration. AIM modules are reported as a maximum of 8 zones.
The UNI•COM may be mounted in the Unimode II control panel or remotely in an ADT-ABS8RF
or ADT-UBS1F enclosure up to 6000 feet away from the control panel. All power must be removed
from the control panel before making any connections to prevent circuit damage. The EIA-485
serial interface is connected between the control panel and UNI•COM using twisted, shielded pair
wire. Power should be wired from the control panel's main power supply 24 VDC (nominal) filtered,
non-resettable output to TB1 on the UNI•COM.
Appendix F: Unimode II