PULS UB20.241 Installation Manual [ml]

EN UB20.241 Installation Manual DC-UPS Control Unit 24V, 20A, 480W
DE UB20.241 Installationsanleitung DC-USV Steuergerät 24V, 20A, 480W
FR UB20.241 Manuel d'installation Sauvegarde CC 24V, 20A, 480W
ES UB20.241 Manual de instalación Unidad de control SAI en CC 24V, 20A, 480W
IT UB20.241 Manuale di Installazione Unità di controllo UPS in CC 24V, 20A, 480W
PT UB20.241 Manual de instalação Unidade de controle UPS em CC 24V, 20A, 480W

Doc. ID: PU-392.015.00-Z (2018-09-04)

Read this first! English Vor Inbetriebnahme lesen! Deutsch

Before operating this device, please read this manual thoroughly and retain this manual for
future reference! This device may only be installed and put into operation by qualified
personnel. If damage or malfunction should occur during operation, immediately turn power
off and send device to the factory for inspection. The device does not contain serviceable
parts. The information presented in this document is believed to be accurate and reliable and
may change without notice. For any clarifications the English translation will be used.

WARNING

- Turn power off before working on the device. Protect against inadvertent re-powering.

- Do not open, modify or repair the device.

- Use caution to prevent any foreign objects from entering the housing.

- Do not use in wet locations or in areas where moisture or condensation can be expected.

- Do not touch during power-on and immediately after power-off. Hot surfaces may cause
burns.

Risk of electrical shock, fire, personal injury, or death:

Bitte lesen Sie diese Warnungen und Hinweise sorgfältig durch, bevor Sie das Gerät in Betrieb

nehmen. Bewahren Sie die Anleitung zum Nachlesen auf. Das Gerät darf nur durch
fachkundiges und qualifiziertes Personal installiert werden. Bei Funktionsstörungen oder
Beschädigungen schalten Sie sofort die Versorgungsspannung ab und senden das Gerät zur
Überprüfung ins Werk. Das Gerät beinhaltet keine Servicebauteile. Die angegebenen Daten
dienen allein der Produktbeschreibung und sind nicht als zugesicherte Eigenschaften im
Rechtssinne aufzufassen. Im Zweifelsfall gilt der englische Text.

WARNUNG

- Schalten Sie die Eingangsspannung vor Installations-, Wartungs- oder Änderungsarbeiten
ab und sichern Sie diese gegen unbeabsichtigtes Wiedereinschalten.

- Führen Sie keine Änderungen oder Reparaturversuche am Gerät durch. Gerät nicht öffnen!

- Verhindern Sie das Eindringen von Fremdkörpern, wie z.B. Büroklammern und Metallteilen.

- Betreiben Sie das Gerät nicht in feuchter Umgebung oder in einer Umgebung, bei der mit
Betauung oder Kondensation zu rechnen ist.

- Gehäuse nicht während des Betriebes oder kurz nach dem Abschalten berühren. Heiße
Oberflächen können Verletzungen verursachen.

Missachtung nachfolgender Punkte kann einen elektrischen
Schlag, Brände, schwere Unfälle oder Tod zur Folge haben:

A lire avant mise sous tension! Français Lea primero! Español

Veuillez lire ces instructions de montage et d'entretien avant de mettre l'alimentation sou s
tension. Conservez ce manuel qui vous sera toujours utile. Cette alimentation ne doit être
installée que par du personnel qualifié et compétent. En cas de dommage ou
dysfonctionnement, coupez immédiatement la tension d’alimentation et retournez l’appareil à
l’usine pour vérification. ! L’alimentation ne contient pas de pièces échangeables Les
données indiquées dans ce document servent uniquement à donner une description du
produit et n'ont aucune valeur juridique. En cas de divergences, le texte anglais fait foi.

AVERTISSEMENT

- Mettre l’alimentation hors tension avant toute intervention sur celle-ci et s'assurer qu'il n'y
a pas risque de redémarrage.

- Ne pas ouvrir, modifier ou réparer l'alimentation.

- Veiller à ce qu'aucun objet ne rentre en contact avec l'intérieur de l'alimentation
(trombones, pièces métalliques).

- Ne pas faire fonctionner l'appareil dans un environnement humide ou dans un
environnement où il peut y avoir de la condensation.

- Ne pas toucher le carter pendant le fonctionnement ou directement après la mise hors
tension. Surface chaude risquant d’entraîner des blessures.

Prendre en compte les points suivants, afin
d'éviter toute détérioration électrique, incendie,
dommage aux personnes ou mort:

Conserve este manual como referencia para futuras consultas. La fuente de alimentación solo

puede ser instalada y puesta en funcionamiento por personal cualificado. Por favor lea
detenidamente este manual antes de conectar la fuente de alimentación. Si se produce un fallo
o mal funcionamiento durante la operación, desconecte inmediatamente la tensión de
alimentación. En ambos casos, el equipo debe ser inspeccionado en fábrica. La información
presentada en este documento es exacta y fiable en cuanto a la descripción del producto y
puede cambiar sin aviso. En casa de duda, prevalece el texto inglés.

- Desconectar la tensión de red antes de trabajar en la fuente de alimentación. Evite una

ADVERTENCIA

posible reconexión involuntar ia.

- No realizar ninguna modificación o reparación de la unidad. No abrir la unidad.

- Evitar la introducción en la carcasa de objetos extraños.

- No usar el equipo en ambientes húmedos. No operar el equipo en ambientes donde se
espere la formación de rocío o condensación.

- No tocar durante el funcionamiento ni inmediatamente después del apagado. El calor de la
superficie puede causar quemaduras graves.

Riesgo de descarga eléctrica, incendio, accidente
grave o muerte:

Leggere prima questa parte! Italiano Leia primeiro! Portuguès

Prima di collegare il sistema di alimentazione elettrica si prega di leggere attentamente le
seguenti avvertenze. Conservare le istruzioni per la consultazione futura. Il sistema di
alimentazione elettrica deve essere installato solo da personale competente e qualificato. Se
durante il funzionamento si verificano anomalie o guasti, scollegare immediatamente la
tensione di alimentazione. In entrambi i casi è necessario far controllare l'apparecchio dal
produttore! I dati sono indicati solo a scopo descrittivo del prodotto e non vanno considerati
come caratteristiche garantite dell'apparecchio. In caso di differenze o problemi è valido il
testo inglese

AVVERTENZA

- Prima di eseguire interventi di installazione, di manutenzione o di modifica scollegare la
tensione di rete ed adottare tutti i provvedimenti necessari per impedirne il ricollegamento
non intenzionale.

- Non tentare di aprire, di modificare o di riparare da soli l'apparecchio.

- Impedire la penetrazione di corpi estranei nell'apparecchio, ad esempio fermagli o altri
oggetti metallici.

- Non far funzionare l'apparecchio in un ambiente umido. Non far funzionare l'apparecchio
in un ambiente soggetto alla formazione di condensa o di rugiada.

- Non toccare quando acceso e subito dopo lo spegnimento. La superficie calda può
causare scottature.

Il mancato rispetto delle seguenti norme può
provocare folgorazione elettrica, incendi, gravi
incidenti e perfino la morte:

Recomendamos a leitura cuidadosa das seguintes advertências e observações, antes de

colocar em funcionamento a fonte de alimentação. Guarde as Instruções para futura consulta,
em casos de dúvida. A fonte de alimentação deverá ser instalada apenas por profissionais da
área, tecnicamente qualificados. Se por acaso, durante a utilização ocorrer algum defeito de
funcionamento ou dano, desligue imediatamente a tensão de alimentaçã o. Em a mbos os casos,
será necessária uma verificação na Fábrica! Os dados mencionados têm como finalidade
somente a descrição do produto, e não devem ser interpretados como propriedades garantidas
no sentido jurídico. Em caso de duvidas aplica-se o texto em inglês.

- Antes de trabalhos de instalação, manutenção ou modificação, desligue a tensão de

ATENÇÃO

alimentação, protegendo-a contra uma nova ligação involuntária.

- Não efectue nenhuma modificação ou tentativa de reparação no aparelho. Quando
necessário contacte o seu distribuidor. Não abra o aparelho.

- Proteger a fonte de alimentação contra a introdução inadvertida de corpos metálicos, como
por ex., clipes ou outras peças de metal.

- Não usar o aparelho em ambientes húmidos. Não usar o aparelho em ambientes propensos
a condensações.

- Não tocar enquanto estiver em funcionamento, nem após a desligar. A superficie poderá
estar quente e provocar lesões.

A não observância ou o incumprimento dos pontos a seguir
mencionados, poderá causar uma descarga elétrica, incêndios,
acidentes graves ou morte:

Headquarters: PULS GmbH, Elektrastr. 6, 81925 Munich, Germany, www.pulspower.com

Germany [phone]
China [phone]

France [phone]
North America [phone]

The information in this document is believed to be accurate and reliable and may change without notice.

Austria [phone]
Singapore [phone]

Switzerland [phone]
United Kingdom [phone]

UB20.241 Installation Manual

EN

Product Description

The UB20.241 is an uninterruptible power supply controller (DC-UPS), which is used in combination
with a 24V power supply and one external 24V-battery to bridge power failures. When the power
supply provides sufficient voltages, the DC-UPS controller charges the battery. When the power
supply voltage fails, the energy stored in the battery is released to the DC bus in a regulated process.

Intended Use

This device is designed for installation in an enclosure and is intended for commercial use, such as in
industrial control, process control, monitoring and measurement equipment or the like. Do not use this
device in equipment where malfunction may cause severe personal injury or threaten human life.

Installation Instructions

Turn power off and disconnect the battery fuse before working on the device.
Install the device in an enclosure providing protection against electrical, mechanical and fire hazards.
Install the device onto a DIN-rail according to EN 60715 with the input terminals on the top of the unit.
The input can be powered from a regulated power supply or a similar DC source. The voltage between
the input and ground must not exceed 60Vdc continuously. The ripple voltage in the low frequency

range between 50Hz and 10kHz must be negligible when used in marine applications.
The input must be powered from a PELV or SELV source or an “Isolated Secondary Circuit” in order to
maintain a SELV or PELV output.
Use an appropriately sized 24V power supply, which can deliver the additional internal current
consumption, required to charge the battery.
Use only VRLA lead acid batteries with a capacity between 3.9Ah and 150Ah.
Check for correct input and battery polarity. The device will not operate when the voltage is reversed.
Make sure that the wiring is correct by following all local and national codes. Use appropriate copper
cables that are designed for a minimum operating temperature of 60°C for ambient temperatures up to
+45°C, 75°C for ambient temperatures up to +60°C and 90°C for ambient temperatures up to +70°C.
Ensure that all strands of a stranded wire enter the terminal connection.
Do not use wires smaller than 4mm
the DC-UPS controller. Longer or smaller gauge wires can change performance of the system.
Use a 35A fuse (ATOF

®

287 035 from Littelfuse or an UL listed fuse with the same characteristics) in

2

(AWG 12) and not longer than 2x1.5m between the battery and

the battery circuit. The battery fuse protects the wires between the battery and the DC-UPS and shall
be located close to the battery.
The device is designed for pollution degree 2 areas in controlled environments.

No condensation or

frost is allowed.
The device is designed as “Class of Protection III” equipment according to IEC 61140.
The enclosure of the device provides a degree of protection of IP20.
A disconnecting means shall be provided for the input and the battery input of the device.
The device is designed for convection cooling and does not require an external fan. Do not obstruct
airflow and do not cover ventilation grid!
Keep the following minimum installation clearances: 40mm on top, 20mm on the bottom, 5mm left and
right side. Increase the 5mm to 15mm in case the adjacent device is a heat source. When the device
is permanently loaded with less than 50%, the 5mm can be reduced to zero.
The device is designed for altitudes up to 6000m (19685ft). See additional requirements in the product
datasheet for use above 2000m (6560ft)
The maximum surrounding air temperature is +70°C (+158°F). The operational temperature is the
same as the ambient or surrounding air temperature and is defined 2cm below the device.
The device is designed to operate in areas between 5% and 95% relative humidity.
The device is designed, tested and approved for branch circuits up to 28A without additional protection
device.
Use a 25A melting fuse with a melting I

2

t of 400A2s – 1500A2s or a 25A circuit breaker with tripping
characteristic B, C, D or K on the input of the DC-UPS if the current of the power supply is higher than
28A.
Use a 4A fuse (ATOF

®

287 004 from Littelfuse or an UL listed fuse with same characteristics) between
the connection point of the two 12V batteries and the “Center Tap” connection point of the DC-UPS.
An equivalent protection is included on the original battery modules. The center tap connection is not
mandatory but enables an individual charging and monitoring of the two batteries.
Optionally, a PT1000 temperature sensor can be connected to terminals point 11 and 12 to measure
the battery temperature. This adjusts the charging voltage according to the battery temperature which
extends the battery life. This sensor is already installed in the original battery modules.

Installation Instructions for Hazardous Location Areas

The device is suitable for use in Class I Division 2 Groups A, B, C, D locations and for use in Group II
Category 3 (Zone 2) environments.
Hazardous Location Classification: ATEX: EPS 15 ATEX 1 025 X, II 3G EX ec nC IIC T4 Gc

WARNING EXPLOSION HAZARDS!

Substitution of components may impair suitability for this environment.
Do not disconnect the device or change unit settings unless power has been switched off or the area
is known to be non-hazardous.
A suitable enclosure must be provided for the end product which has a minimum protection of IP54
and fulfils the requirements of the EN 60079-0.

Technical Data

All values are typical figures specified at 24Vdc input voltage, 20A output
current in power supply mode at 25°C ambient, no charging and after a 5
minutes run-in time unless otherwise noted.

Input voltage DC 24V ±25%
Minimum input voltage to

start charging and to
enable battery mode

Transfer voltage to switch
into battery mode

Internal current
consumption

Adjusted transfer voltage to switch into
battery mode.

23.5V, 25.0V,

26.0V, 27.0V

2.1A / 4.0A <10Ah / >10Ah, Includes

Depending on the
selected buffer voltage

charging current

Output in power supply mode:
Input to output voltage loss 70mV At 10A output load
135mV At 20A output load
Output current 25A Below +60°C

18.8A At +70°C
30A Short term, up to 5s
Derate linearely between +60°C and +70°C
Output in battery mode:
Output voltage 22.5V, 24.0V,

25.0V, 26.0V

Depending on the
selected buffer voltage

Output current 20A At 22.5V, below +60°C
15A At 22.5V and +70°C
30A Short term, up to 4s
Derate linearely between +60°C and +70°C
Power losses 4.6W At 20A output load
Temperature range -40°C to +70°C
Max. wire size (litz wire) 4mm² For power terminals
Wire size AWG AWG 20-10 For power terminals
Max. wire diameter 2. 8mm For power terminals
Wire stripping length 7mm/ 0.28inch For power terminals
Tightening torque 1Nm/ 9lb.inch For power terminals
Max. wire size (litz wire) 1.5mm² For signal terminals
Wire size AWG AWG 22-14 For signal terminals
Max. wire diameter 1.5mm For signal terminals
Wire stripping length 6mm/ 0.25inch For signal terminals
Tightening torque 0.4Nm/ 3.5lb.inch For signal terminals
Size (wxhxd) 46x124x127mm Without DIN-rail
Weight 700g / 1.54lb

Functional Diagram

Return Current

+

Input Output

Temp.
Sensor

24V
Battery

Center
Tap

24V
Battery

Protection

-

(11)

(12)

Battery

Tester 1

+

(13)

Battery

Charger

1

Battery

Charger

2

Battery

Tester 2

-

Current

Limiter

Buck/Boost

Converter

Current

Measurement

Controller

+

-

(7)

Inhibit Input +

(8)

Inhibit Input ­Status LED Batt 1
Status LED Batt 2

Diagnosis LED
Error LED
Buffer-time Limiter
Buffer Voltage

(1)

Ready Contact

(2)
(3)

Buffering Contact

(4)
(5)

Replace Battery

(6)

Battery Size
Selector

Wiring Scheme

+-+

Output

Power
Supply

Input

L N

-

PE

+

-

Battery

DC-UPS

Center-Tap

PT1000

Temp. Sensor

Load

+

OutputInput

-

(13)
(12)
(11)

(+)

Fuse

+-

12V

BAT1

+-

12V

Temp.
Sensor

BAT2

Auto
Resettable
Fuse

+

(-)

-

Center-Tap

o

Temp.

o

Sensor

o

24V Battery Module