Aritech PM84 Series - User Manual

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PM84x Series 13.8 V DC Switch Mode Power

Supplies Installation Sheet

EN: Installation Sheet

Features

High efficiency cost effective power supply ideal for use in

Intruder, Access Control and General Security applications.

Featuring a regulated 13.8 V DC output supplying continuous

full rated current to load plus additional current for charging a

standby battery. 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*.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 a standby battery

• Battery Deep Discharge Protection*

• Universal mains input voltage 90-264 V AC

• Volt free contact signaling mains failure*

• Volt free contact signaling 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

• 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

• Lid opening tamper detection

• Removal from mounting tamper detection*

• Green Mains present LED

• Red Fault LED

* Dependent on model

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.

PM841, PM842 and PM844-A layout

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

0.5 mm

[3 A], 300/500 V AC) and fasten using cable ties.

2. Apply mains power. Check for 13.8 V DC on load outputs.

Check green Mains LED is on.

3. Disconnect mains power.

Load output

1. Attach correctly rated load cable and fasten using cable

ties. Note polarity.

2. Apply mains power. Check green Mains LED is on.

Note:

Red LED may flash or be steady on (dependent upon

model) to indicate that no battery has been connected. This is

normal.

100mm (min) all around

Fig 1. Location diagram

Need help?

Do you have a question about the Aritech PM84 Series and is the answer not in the manual?

The PM84x Series 13.8 V DC Switch Mode Power Supplies are high-efficiency, cost-effective power supply units designed for use in Intruder, Access Control, and general Security applications. These units provide a regulated 13.8 V DC output, delivering continuous full-rated current to the connected load while also supplying additional current for charging a standby battery. A key feature for ensuring maximum battery life is the integrated deep discharge protection, which prevents premature battery failure during extended standby operation (dependent on model).

The power supplies offer universal mains input voltage (90-264 V AC), making them suitable for use across a wide geographical area. The highly efficient switch mode design contributes to low operating costs, reduced heat generation, and a compact physical size, which in turn increases available space for additional PCBs or cables within the enclosure. The modular construction of the units simplifies both maintenance and installation processes.

Key Features:

Continuous Full Rated Current: Delivers a steady current to the connected load.
Standby Battery Charging: Provides additional current specifically for charging a standby battery.
Battery Deep Discharge Protection: Prevents premature battery failure during extended standby operation (model-dependent).
Universal Mains Input: Accepts a wide range of AC input voltages (90-264 V AC).
Volt-Free Contact Signaling: Includes volt-free contacts to signal mains failure, as well as battery and output faults (model-dependent).
High Efficiency Electronics: Contributes to reduced running costs and lower operating temperatures.
Installer Safe Design: All high voltage electronics are fully shrouded for enhanced safety during installation.
Modular Construction: Facilitates ease of maintenance and installation.
Full Electronic Short Circuit and Overload Protection: Protects the load output under mains operation.
Mains Transient Protection Circuit: Safeguards against mains voltage fluctuations.
Lid Opening Tamper Detection: Detects when the enclosure lid is opened.
Removal from Mounting Tamper Detection: Signals if the unit is removed from its mounting (model-dependent).
LED Indicators: Features a green "Mains Present" LED and a red "Fault" LED for quick status checks.

Important Technical Specifications:

Output:

Voltage: 13.4 – 14.2 V DC (13.8 V DC nominal) on mains power; 10.0 – 12.3 V DC on battery standby.
Max Load Current:
- PM841: 1 A
- PM842: 2 A
- PM844-A: 4 A
Ripple: 150 mV pk-pk max.
Load Output Fuse:
- PM841: F1.0 A
- PM842: F2.0 A
- PM844-A: F4.0 A
Overload: Electronic shutdown until overload or short circuit is removed (under mains power only).

Standby Battery:

Type: 12 V DC Valve Regulated Lead Acid.
Battery Capacity:
- PM841, PM842: 1 x BS127N (7.2 Ah)
- PM844-A: 1 x BS131N (18 Ah)
Battery Recharge Current (max):
- PM841, PM842: 0.5 A
- PM844-A: 1.0 A
Battery Re-charge Time (to 80% of max capacity):
- PM841, PM842: < 30 h
- PM844-A: < 24 h
Battery Charging Fuse: PTC (PM841, PM842), F4.0 A (PM844-A).

Input:

Voltage (rated): 100-240 V AC.
Frequency: 50-60 Hz.
Max Input Current (at 90 V AC):
- PM841: 0.8 A
- PM842: 1.0 A
- PM844-A: 2.0 A
Mains Input Fuse:
- PM841, PM842: T2.0 A HRC
- PM844-A: T3.15 HRC
Max Standby Power: 0.5 W (No load and no battery connected).

Mechanical:

Enclosure Dimensions (w x h x d external):
- PM841, PM842: 230 x 200 x 80 mm
- PM844-A: 355 x 330 x 80 mm
Weight (excluding battery):
- PM841, PM842: 2.0 kg
- PM844-A: 4.3 kg

Environmental:

Operating Temperature: -10 to +40°C (95% RH non-condensing).
Storage Temperature: -20 to +80°C.

Usage Features:

The unit is designed for permanent connection and is not suitable for external installation. It must be earthed, and an external disconnect device should be OFF before installation.

Mounting: Securely mount in the correct orientation, ensuring a minimum clearance of 100mm all around for proper ventilation. Cables should be routed through different knockouts/entry holes using UL94 HB rated bushes and cable glands.
Mains Power-up: Connect the correctly rated mains cable (minimum 0.5 mm² [3 A], 300/500 V AC) and secure with cable ties. After applying mains power, verify 13.8 V DC on load outputs and confirm the green Mains LED is on.
Load Output: Connect the correctly rated load cable, observing polarity, and secure with cable ties. After applying mains power, confirm the green Mains LED is on. A flashing or steady red Fault LED is normal if no battery is connected.
Standby Battery Connection: Attach the supplied battery cables to the terminal block and battery, ensuring correct polarity (+ve to red lead, -ve to black lead). Mount the battery to avoid all lid fixing screws. After applying mains power, confirm the green Mains LED is on and no fault indication on the red LED. Verify that EPS and GEN Fault contacts are CLOSED.
Tamper (PM844-A Only): Connect the tamper switch to the appropriate inputs of the Control & Indicating Equipment (CIE). The tamper switch should be CLOSED when the lid/cover is closed and secured, and OPEN when the lid/cover is open or screws are removed. A fine adjustment screw allows alignment of the set position indicator with the set point.

Maintenance Features:

This unit is intended for use by Service Personnel only, with no user-serviceable parts inside.

LED Indicators: The green Mains LED illuminates when mains supply is present. The red Fault LED illuminates (flash or steady) and corresponding fault signal contacts (EPS or GEN) open in the event of a fault.
Routine Maintenance: No regular maintenance is required beyond periodic testing and replacement of the standby battery. Battery manufacturer's documentation should be consulted to determine typical battery life and schedule replacements.
Troubleshooting: If the PSU output fails, the cause (e.g., short circuit load) should be investigated and rectified before restoring power. Fuses may need replacement; ensure correct fuse rating and type.
Battery Replacement: Risk of explosion if the battery is replaced by an incorrect type. Used batteries must be disposed of according to the battery manufacturer's instructions and all local/national regulations.
Recycling: The product packaging is recyclable. The product itself, including the battery, must be disposed of according to WEEE and battery directives respectively, returning to local suppliers or designated collection points.

Aritech PM84 Series Specifications

General

Brand	Aritech
Model	PM84 Series
Category	Power Supply
Language	English