44 UDACT-2 — Instruction Manual P/N 54089:B3 10/29/2019
Panel-Specific Information AM2020/AFP1010 (UL 8th)
Connect 24 VDC filtered, regulated power from the MPS-24A or MPS-24B (Main Power Supply) to +24V and -24V terminals on the
UDACT-2.
Notes
1. Recommended wire is 12 AWG (3.25mm
2
) to 18 AWG (0.75mm
2
), twisted pair, shielded cable. Connect only one end of shield: a)
shield may be connected to cabinet (earth ground) at fire alarm panel, or b) shield may be connected to TB1 Common at the
UDACT-2 as shown in Figure A.12.
2. Conduit is required for external wire runs. Consult local building codes.
3. Refer to "Specifications" on page 8 for power requirements.
Below is a remote installation of a UDACT-2 with an AM2020/AFP1010 using an MPS-24A main power supply:
NOTE: The shield end that is not connected should be insulated to prevent accidental grounding. Do not connect both ends of shield
under any circumstance since a ground fault may result.
To Phone Lines
(supervised)
Solid Earth Ground
Connection
MPS-24A
SIB-2048
EIA-485
Interface
udact2-am2020mps24a_a.wmf
CAB-3/4 Series Cabinet
Wires in
conduit
Remote Cabinet
Figure A.12 UDACT-2 and AM2020/AFP1010 with MPS-24A
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