PM86x Series 27.6V DC Switch Mode Power
Supplies Installation Sheet
EN DE ES FR
IT
EN: Installation Sheet
Features
High efficiency cost effective power supply ideal for use in
Fire, Access Control and General Security applications.
Featuring a regulated 27.6 Vdc output supplying continuous
full rated current to load plus additional current for charging
two x 12v standby batteries. Maximum battery life is assured
using deep discharge protection to prevent premature battery
failure when operating in standby mode for extended periods.
Two sets of volt-free contacts are provided to signal (i) loss of
mains and (ii) battery and loss of output faults. Front panel
mounted LEDs show presence of mains and faults. The
universal mains input voltage enables the power supply to be
used across a wide geographical area. The highly efficient
switch mode design ensures low operating costs, generates
less heat and with a small physical size increases the room
available for additional PCBs or cables. The modular
construction simplifies maintenance.
Continuous full rated current to load
Additional current to charge 2 x 12V standby batteries
Battery Deep Discharge Protection
Universal mains input voltage 90-264Vac
Volt free contact signalling mains failure
Volt free contact signalling output and battery faults
High efficiency electronics for reduced running costs and
lower operating temperatures
Installer safe design with all high voltage electronics fully
shrouded
Reverse battery connection protection
Modular construction for ease of maintenance and
installation
Full electronic short circuit and overload protection on
load output under mains operation
Mains transient protection circuit
Green Mains present LED
Yellow Fault LED
Orange Battery Charging LED (visible on PCB only)
Installation instructions
This unit is only suitable for installation as permanently
connected equipment. The PSU is NOT SUITABLE for
external installation. EQUIPMENT MUST BE EARTHED.
Before installation, ensure that external disconnect device is
OFF. The PSU should be installed according to all relevant
safety regulations applicable to the application.
© 2013 UTC Fire & Security Americas Corporation, Inc. All rights reserved.
PM861, PM862 layout
100mm all round
PM863, PM865 layout
100mm all round
N
L
E
Mounting
1.
Mount securely in correct orientation allowing the
minimum clearance – see diagram.
2.
Route mains and low voltage output cables via different
knockouts and/or cable entry holes.
3.
Use bushes and cable glands rated to UL94 HB
minimum.
Mains power-up
1.
Attach correctly rated mains cable (minimum
2
0.5 mm
[3 A], 300/500 Vac) and fasten using cable ties.
2.
Apply mains power. Check for 27.6 Vdc on load outputs.
Check Green Mains LED is ON.
3.
Disconnect mains power.
PAK200535 • REV 01B • ISS 15APR13
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