User Instructions

ManualsBrandsPulsar Manuals13RN 12V/5A voltage reducer DC

www.pulsar.pl RN500

RN500

v1.0

RN 12V/5A

DC voltage reducer

Edition: 6 from 07.08.2017

Supersedes the edition: 5 from 15.01.2016

Features:

 supply voltage of 14V DC max.

 power output 12V DC/5A

 output voltage adjustment range 11V÷Uin

 linear voltage stabilization

 lossless conductivity below stabilisation threshold

 LED indication

 protections:

 SCP short circuit protection

 OLP overload protection

 warranty – 2 years from the

production date

1. Technical description.

1.1. General description.

The RN 12V/5A (RN500) is intended for lowering and stabilising DC voltage within the range of 12÷14V into the

value of 12V (adjustment 11V÷Uin DC). In the case when the output voltage drops below the preset output value, the

transistor opens and the reducer conducts without any loss (voltage drop ΔU<1%). That enables full use of energy

accumulated in the PSU’s battery during batter-assisted operation.

The RN500 voltage reducer along with a typical buffer PSU is intended for supplying devices that require voltage of

10V÷12V DC. It is particularly dedicated for CCTV systems (cameras, IR illuminators), KD access control systems and

others which feature devices supplied with voltage of 12V DC (-10%/+5%) and cannot by powered directly from the 13,8V

DC output of a buffer PSU.

Maximum load current of the reducer is 5A (receiver’s power P=60W max.). The output of the RN500 reducer is

protected against an overload (OLP) and a short circuit (SCP). It features LED indication of DC power and DC output

operating status. The module does not have galvanic isolation between input and output (IN-AUX), it operates at same

ground potential (0V) (IN- and AUX terminals are galvanically connected = joint terminal).

Summary of content (4 pages)

PAGE 1
www.pulsar.pl RN500 RN500 v1.0 RN 12V/5A DC voltage reducer Edition: 6 from 07.08.2017 Supersedes the edition: 5 from 15.01.2016 EN Features:        supply voltage of 14V DC max. power output 12V DC/5A output voltage adjustment range 11V÷Uin linear voltage stabilization lossless conductivity below stabilisation threshold  LED indication protections:  SCP short circuit protection  OLP overload protection warranty – 2 years from the production date 1. Technical description. 1.1.
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www.pulsar.pl RN500 1.2. Block diagram (fig.1). Fig.1. Block diagram of the voltage reducer. 1.3. Typical application of RN500. FIg.2. Typical application of the RN500 voltage reducer. 1.4. Description of components and connectors of the reducer. Table 1. No. [fig.3] [1] [2] [3] [4] [5] Table 2. [2] +IN - IN +AUX - AUX Element description IN LED – red (reducer’s power status) +IN-, +AUX-, connectors of the reducer (see tab.
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www.pulsar.pl RN500 Fig.3. The view of the RN500 voltage reducer. 1.5. Specifications: - electrical specifications (tab.3) - mechanical specifications (tab.4) Table 3.
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www.pulsar.pl RN500 2. Installation 2.1 Requirements. The module of the reducer is to be mounted by a qualified installer, holding relevant permits and licenses (applicable and required for a given country) for low-voltage installations. The unit should be mounted in confined spaces, in accordance with the 2nd environmental class, with normal relative humidity (RH=20%-90% maximum, without condensation) and temperature from 10°C to +40°C.