Power Supply 12V/2A (DIN, UPS)

1. Dimensions

D: 100 mm
H: 92 mm

W: 41 mm

2. What you need

Wired. Mains AC input, DIN-rail mounted. Provides 12 V DC for PIERRE devices such as the Controller; size the supply to the total current of everything connected.

3. Wiring

Connect the L and N terminals of the power supply to the AC mains (Live and Neutral).
The DC output terminals +V and −V supply 12 V DC to the connected device.
Connect a rechargeable VRLA battery to the Bat.+ and Bat.− terminals; observe the polarity.
The battery charges while mains power is available and supplies the load during an outage.

Run	Wires	Cross-section	Cable type	Conductors
Example: From power supply to Controller	2	0.75 mm²	NYM-J	+12 V, GND

4. Block Diagram

Power Supply with Battery Backup – Functional Description

The block diagram shows the internal structure of a power supply unit with battery backup:

EMI Filter & Rectifier: filters electromagnetic interference from the input and converts AC to DC.
Power Switching: converts and regulates the voltage by high-speed switching.
Rectifiers & Filter: smooths and stabilises the output voltage for the load.
PWM Control: controls the switching to keep the output constant (pulse width modulation).
O.L.P. (Over Load Protection): shuts down or limits the output when an excessive load is detected.
O.V.P. (Over Voltage Protection): cuts the output if the voltage exceeds the safe limit.
Detection Circuit: monitors voltage and other parameters to trigger protective actions or status indicators.
Battery Charger & Backup Control: manages battery charging and switches to battery power when the mains fails.
Alarm Circuit: indicates system status: AC OK (input power is normal), Bat. Low (battery voltage is low).
Output Terminals: +V / -V main output to the load; Bat. + / Bat. - battery connection terminals.

5. Derating Curve

Load (%)
Ambient Temperature (°C)

6. Output Derating vs Input Voltage

Load (%)
Input voltage (V AC), 60 Hz

7. Side Notes

All parameters not specially mentioned are measured at 230 V AC input, rated load and 25 °C ambient temperature.
Ripple and noise are measured at 20 MHz bandwidth using a 12" twisted-pair wire terminated with a 0.1 µF and 47 µF parallel capacitor.
Tolerance includes set-up tolerance, line regulation and load regulation.
Set-up time is measured at cold first start. Turning the power supply on and off may increase the set-up time.
The power supply is a component to be installed in final equipment; the final equipment must be checked again for EMC.
Installation clearances: 40 mm on top, 20 mm on the bottom, 5 mm on the left and right side when loaded permanently with full power. If the adjacent device is a heat source, 15 mm clearance is recommended.
Ambient temperature derating: 3.5 °C per 1000 m (fanless models) and 5 °C per 1000 m (fan models) for operating altitudes above 2000 m (6500 ft).

8. Product specifications

Technical Specifications

Connectivity

Zigbee

Features

LED Indicators	Yes
Low Battery Indication	Yes

Environmental

Operating Temperature	-22°F ～ +158°F
Operating Temperature (°C)	-30°C ～ +70°C
Operating Humidity	20% - 90% RH, Non Condensing % RH
IP Rating	IP20

Electrical

Power Supply	100-240V AC 50-60Hz
Input Power	90-264V AC / 127-370V DC
Efficiency	87 %
Battery Charge	13.8V DC, 1.0A

Safety

Safety Features

Overload protection, Over voltage protection, Short circuit protection, Battery low cut-off, Reverse polarity protection, Battery backup

Control

Number of Channels

2 channels

Physical

Product Color	White
Mounting Type	DIN
Wiring Requirements	N - Neutral, L - Line