BEL LET480 Installation guide

Brand: BEL

Model: LET480

Type: Installation guide

LET480-24

INPUT:

320 – 600 VAC, 0.6 A – 1.2 A, 50 - 60 Hz or 450 - 800 VDC, 0.6 – 1.2 A

OUTPUT:

24 VDC, 20 A

LET480-36

INPUT:

320 – 600 VAC, 0.6 A – 1.2 A, 50 - 60 Hz or 450 - 800 VDC, 0.6 – 1.2 A

OUTPUT:

36 VDC, 13.3 A

LET480-48

INPUT:

320 – 600 VAC, 0.6 A – 1.2 A, 50 - 60 Hz or 450 - 800 VDC, 0.6 – 1.2 A

OUTPUT:

48 VDC, 10 A

READ THIS CAREFULLY BEFORE

INSTALLATION!

VOR DER INSTALLATION BITTE FOLGENDE

SICHERHEITSHINWEISE BEACHTEN!

LEGGERE ATTENTAMENTE PRIMA

DELL’INSTALLAZIONE!

A LIRE ATTENTIVEMENT AVANT

L’INSTALLATION!

The product must be installed, operated,

serviced and maintained by qualified

personnel in accordance with applicable

standards and regulations.

Do not open the device, it contains no

replaceable components, and tripping of the

internal fuse (if included) is caused by an

internal fault.

Do not repair or modify the equipment, if

there is any malfunction or failure during

operation, please send the equipment to the

factory for inspection.

Bel disclaims all liability for any

consequences arising from the use of this

material.

Das Produkt muss von qualifiziertem Personal

gemäß den geltenden Normen und Vorschriften

installiert, betrieben, gewartet und gewartet werden.

Öffnen Sie das Gerät nicht, es enthält keine

austauschbaren Komponenten und das Auslösen der

internen Sicherung (falls vorhanden) wird durch einen

internen Fehler verursacht. Reparieren oder

modifizieren Sie das Gerät nicht. Wenn während des

Betriebs eine Fehlfunktion oder ein Ausfall auftritt,

senden Sie das Gerät bitte zur Inspektion ins Werk.

Bel lehnt jede Verantwortung für Folgen ab, die sich

aus der Verwendung dieses Materials ergeben.

Il prodotto deve essere installato, utilizzato,

riparato e mantenuto da personale qualificato

in conformità con gli standard e le normative

applicabili. Non aprire il dispositivo, non

contiene componenti sostituibili e l'intervento

del fusibile interno (se presente) è causato da

un guasto interno. Non riparare o modificare

l'apparecchiatura, in caso di

malfunzionamento o guasto durante il

funzionamento, inviare l'apparecchiatura alla

fabbrica per l'ispezione. Bel declina ogni

responsabilità per eventuali conseguenze

derivanti dall'uso di questo materiale.

Le produit doit être installé, utilisé, entretenu et

entretenu par du personnel qualifié

conformément aux normes et réglementations

applicables. N'ouvrez pas l'appareil, il ne

contient aucun composant remplaçable et le

déclenchement du fusible interne (le cas

échéant) est provoqué par un défaut interne. Ne

réparez pas ou ne modifiez pas l'équipement,

s'il y a un dysfonctionnement ou une panne

pendant le fonctionnement, veuillez envoyer

l'équipement à l'usine pour inspection. Bel

décline toute responsabilité pour les

conséquences découlant de l'utilisation de ce

matériel.

CAUTION

ACHTUNG

ATTENZIONE

AVVERTISSEMENT

RISK OF BURNS, EXPLOSION, FIRE,

ELECTRICAL SHOCK, PERSONAL INJURY

1. Do not use this power supply without

proper grounding (protective grounding), use

the wiring terminals on the input components

instead of the screws on the shell for

grounding;

2. Before performing operations on the

equipment, turn off the power supply to

provide protection to avoid accidentally re-

energizing;

3. Comply with all local and national

regulations to ensure correct wiring;

4. Do not modify or repair this product;

5.Do not open the unit as high voltages are

present inside;

6. Take care to prevent any foreign matter

from entering the shell;

7. Do not use this product in humid places or

areas where moisture or condensation may

occur;

8. When the power is turned on and just after

it is turned off, do not touch it. The hot

surface may cause burns;

9. When the ambient temperature is ≤60°C,

use ≥90°C copper wire; when the ambient

temperature is >60°C and ≤85°C, use

≥105°C copper wire; only use minimum

insulation strength of 600V (input) and 60V

(output) wire.

GEFAHR VON STROMSCHLAG, FEUER,

KÖRPERVERLETZUNG ODER TOD

1. Verwenden Sie das Netzteil nicht ohne

ordnungsgemäße Erdung (Schutzerdung),

verwenden Sie die Klemme am Eingangsteil anstelle

der Schraube am Gehäuse für die Erdung;

2. Bevor Sie Arbeiten am Gerät durchführen, schalten

Sie zuerst die Stromversorgung aus, um Schutz zu

bieten, damit Sie nicht versehentlich wieder

eingeschaltet werden;

3. Halten Sie alle örtlichen und nationalen

Vorschriften ein, um eine ordnungsgemäße

Verkabelung sicherzustellen;

4. Modifizieren oder reparieren Sie dieses Produkt

nicht;

5. Öffnen Sie dieses Produkt nicht wegen des hohen

Drucks im Inneren;

6. Verhindern Sie sorgfältig das Eindringen von

Fremdkörpern in das Gehäuse;

7. Verwenden Sie dieses Produkt nicht an einem

feuchten Ort oder in einem Bereich, in dem

Feuchtigkeit oder Kondensation auftreten kann;

8. Nicht berühren, wenn das Gerät eingeschaltet ist

oder kurz nachdem es ausgeschaltet wurde. Die

heiße Oberfläche kann Verbrennungen verursachen;

9. Verwenden Sie bei einer Umgebungstemperatur

von ≤60 °C ≥90 °C Kupferdraht, bei einer

Umgebungstemperatur von >60 °C und ≤85 °C einen

≥105 °C Kupferdraht und nur eine

Mindestisolationsstärke von 600 V (Eingang) und 60

V (Ausgang) Kabel.

RISCHIO DI SCOSSE ELETTRICHE,

INCENDI, LESIONI PERSONALI O MORTE

1. Non utilizzare l'alimentatore senza

un'adeguata messa a terra (messa a terra di

protezione), utilizzare il terminale sulla parte

di ingresso invece della vite

sull'alloggiamento per la messa a terra;

2. Prima di eseguire operazioni

sull'apparecchiatura, spegnere prima

l'alimentazione per fornire protezione in modo

da non riaccendere accidentalmente;

3. Rispettare tutti i codici locali e nazionali per

garantire un cablaggio corretto;

4. Non modificare o riparare questo prodotto;

5. Non aprire questo prodotto a causa

dell'alta pressione all'interno;

6. Impedire con cura che corpi estranei

entrino nell'alloggiamento;

7. Non utilizzare questo prodotto in un luogo

umido o in un'area in cui possono formarsi

umidità o condensa;

8. Non toccare quando l'alimentazione è

accesa o subito dopo che è stata spenta.La

superficie calda può causare ustioni;

9. Quando la temperatura ambiente è ≤60°C,

utilizzare filo di rame ≥90°C; quando la

temperatura ambiente è >60°C e ≤85°C,

utilizzare filo di rame ≥105°C; utilizzare solo

una forza di isolamento minima di 600 V

(ingresso) e 60V (uscita).

RISQUE DE CHOC ÉLECTRIQUE,

D’INCENDIE, DE BLESSURES

CORPORELLES OU DE DÉCÈS

1. N'utilisez pas l'alimentation sans une mise à

la terre appropriée (mise à la terre de

protection), utilisez la borne sur la partie

d'entrée au lieu de la vis sur le boîtier pour la

mise à la terre ;

2. Avant d'effectuer des opérations sur

l'équipement, éteignez d'abord l'alimentation

électrique pour assurer la protection afin de ne

pas rallumer accidentellement ;

3. Respectez tous les codes locaux et nationaux

pour assurer un câblage correct ; 4. Ne modifiez

pas ou ne réparez pas ce produit ;

5. N'ouvrez pas ce produit en raison de la haute

pression à l'intérieur ;

6. Empêchez soigneusement tout corps

étranger de pénétrer dans le boîtier ;

7. N'utilisez pas ce produit dans un endroit

humide ou dans une zone où de l'humidité ou

de la condensation peut se produire ;

8. Ne touchez pas lorsque l'appareil est sous

tension ou juste après l'avoir éteint. La surface

chaude peut provoquer des brûlures ;

9. Lorsque la température ambiante est ≤60 °C,

utilisez un fil de cuivre ≥90 °C ; lorsque la

température ambiante est >60 °C et ≤85 °C,

utilisez un fil de cuivre ≥105 °C ; utilisez

uniquement une force d'isolation minimale de

600 V (entrée) et 60V (sortie).

INTENDED USE

BESTIMMUNGSGEMÄßER BETRIEB

USO PREVISTO

UTILISATION

These are designed to be mounted on DIN

rails and installed in protective enclosures.

They are suitable for general purposes, such

as industrial control, communications, and

instrumentation equipment.

Do not use these devices in applications

where malfunctions may cause personal

injury or death.

Es handelt sich um galvanisch getrennte Geräte, die

für SELV- und PELV-Anwendungen geeignet sind

und für die Montage auf DIN-Schienen und die

Installation in einem Schutzgehäuse konzipiert sind.

Sie sind für den allgemeinen Gebrauch wie

z.B. in industriellen Steuer-, Kommunikations- und

Automatisierung-Anwendungen vorgesehen.

Verwenden Sie diese Geräte nicht in Anwendungen,

bei denen eine Fehlfunktion zu

Verletzungen oder zum Tod führen kann.

I dispositivi sono isolati, adatti per

applicazioni SELV e PELV, sono dotati di

aggancio per il montaggio su guida DIN

all’interno di quadri elettrici o contenitori di

protezione, per l’utilizzo con controllori

industriali, unità di comunicazione o

apparecchi di misura.

Non utilizzare in applicazioni in cui un

eventuale guasto può comportare rischio di

lesioni o di morte.

Les produits sont isolés, appropriés pour les

circuits TBTS et TBTP et sont équipés d'un

crochet pour montage sur rail DIN dans des

armoires ou conteneurs de protection, pour

utilisation avec les contrôleurs industriels, des

modules de communication ou des unités de

mesure.

Ne pas utiliser ces dispositifs dans une

application où un dysfonctionnement pourrait

entraîner le risque des blessures ou de mort.

ENVIRONMENTAL CHARACTERISTICS

UMGEBUNGSBEDINGUNGEN

CARATTERISTICHE AMBIENTALI

CARACTÉRISTIQUES ENVIRONMENTALES

Installation in a Pollution Degree 2

environment.

Do not use in wet area or subject to moisture.

Carefully recycle the product and related

batteries according to local regulations.

Installation in einer Umgebung mit

Verschmutzungsgrad 2.

Nicht in nassen Bereichen oder unter Feuchtigkeit

verwenden.

Das Gerät und die zugehörigen Batterien sind

entsprechend den lokalen Vorschriften zu recyceln

bzw. zu entsorgen.

Usare in ambienti con Grado di Inquinamento

Non far funzionare l'apparecchio in un

ambiente umido o soggetto a formazione di

condensa. Riciclare il prodotto e le batterie

collegate, nel rispetto delle normative locali

vigenti.

Utiliser les produits dans des environnements

avec degré de pollution 2.

Ne pas employer l'appareil dans un

environnement humide ou soumis à la

condensation. Recycler les produits et les

batteries, conformément à la réglementation

locale.

LET480 Series

[email protected]

USER INSTRUCTIONS

1) DESCRIPTION

DIN rail-mounted switching power supply, with 3x 320 - 3x 600 VAC (450 - 800 VDC) input, suitable for three-phase power lines and DC lines.

2) INSTALLATION

Use DIN-rails according to EN 60715. Installation should be made vertically (see Fig.4). For better device stability fix the rail to the wall close to the point where the

device is to be mounted. To guarantee sufficient convection, we recommend observing a minimum distance to other modules (see Fig.3).

The product has over-temperature protection；restricted airflow will cause local temperatures to be too high, which may trigger the over-temperature protection to

restart after cooling.

To get normal operation reduce the temperature of the air surrounding the power supply, increase the ventilation or reduce the load (see Fig.8)

3) CONNECTIONS

The device is equipped with screw terminal blocks. To avoid sparks, do not connect or disconnect the connectors before having previously turned-off input power and

waited for internal capacitors discharge (minimum 1 minute)

In order to comply with UL certification,

When the ambient temperature is ≤ 60°C, use a copper wire with a specification of ≥ 90 °C;

When the ambient temperature is > 60°C and ≤ 85°C, use a copper wire with a specification of ≥ 105 °C;

Only use wires with a minimum insulation strength of 800 V (input) and 60 V (output).

4) INPUT PROTECTION

The device input is provided with varistors against overvoltage. Input is provided with internal fuses T/4A / 250 VAC, thus an external short circuit / overcurrent

protection must be provided by the end user (see Fig.6).

For operation on a single-phase system, a protection fuse must be provided on each phase.

Surge protection: it is strongly recommended to provide external surge arresters (SPD) according to local regulations

5) AC INPUT CONNECTION

The device can be connected to a three phase AC line with rated 3x 380 - 3x 480 VAC (see Fig.7). Please connect the PE first.

6) DC INPUT CONNECTION

(+) Positive pole (-) Negative pole can be connected to any two terminals of L1, L2, L3, and PE terminal is connected to GND. Rated voltage 530 – 680 VDC.

The device is also suitable for photovoltaic or wind turbine applications (see Fig.7).

7) OUTPUT CONNECTION

Vout can be adjusted with a potentiometer to a wide range (see Fig.1)

24 V: Adjustable range 24 V – 28 V;

36 V: Adjustable range 36 V – 42 V;

48 V：Adjustable range 48 V – 56 V

Check the Vout before connecting the power supply to the load. The output voltage is set to the rated value, and the continuous output power [current x voltage] shall not

exceed the nominal power.

8) OUTPUT PROTECTION

The device is protected against overload (OL) / short circuit (SC) / overvoltage (OV) / over temperature (OT).

Overload (OL) enters constant current (C.C.) mode: When the power supply provides 120%~150% rated output current, the product will enter constant current mode

4s after a certain overload current point.

1. Before the product enters the constant current mode: the output voltage remains the same as the rated voltage, and the output current changes with the load

current.

2. When the output current of the product continues to increase, the constant current point is triggered: at this time, the output voltage gradually drops to close to 0,

and the output current will be constant at the constant current point of 120%~150 %Io, and it will automatically recover after the abnormal load condition is

removed.

Short circuit (SC) enters constant current (C.C.) mode: when the output load is short-circuited, the output voltage drops to close to 0, and the output current will be

constant at the constant current point of 120%~150%Io recover.

Output overvoltage protection (OVP): The output is protected by internal faults or potential OV from the load. The protection phenomenon is that the output voltage is

turned off and hiccupped. The output voltage will recover automatically after the abnormality is resolved. The overvoltage protection point depends on the product

model:

24 V: overvoltage protection point ≤ 35 V;

36 V: overvoltage protection point ≤ 53 V;

48 V: overvoltage protection point ≤ 60 V

Over-Temperature Protection (OTP): If the internal temperature exceeds safe limits, the output voltage shuts down and hiccups. The device automatically restarts after

it cools down. To restore normal operation, reduce the air temperature around the power supply, increase cooling, or reduce the load (see Fig.8).

9) FEEDING DC MOTORS

Considering that when the motor starts, its instantaneous power is much higher than the power under the nominal current, so it may trigger the over-current protection,

when powering the DC motor, it is recommended to use C.C. (constant current) current limiting mode. When the transient power does not exceed 150%, Io/4s can start

normally. When it exceeds the range, the customer needs to design a constant current mode to supply power to the back-end motor.

NOTE: Motors generate high conducted noise on the DC line. Therefore, it is not recommended to power other motors and noise-sensitive equipment on the same line.

10) OPERATION WITH BATTERY

The power supply cannot directly charge the battery. When the battery needs to be charged, a battery management unit needs to be designed.

INSTALLATION INSTRUCTION

Manufacturer

Bel Fuse Inc.

206 Van Vorst St.

Jersey City

NJ 07302, USA

Asia-Pacific

+86 755 2988 5888

Europe, Middle East

+353 61 49 8941

North America

+1 866 513 2839

BCM.20086_1

FIG. 1 - CONNECTIONS

FIG. 2 - DIMENSIONS

FIG. 3 - DISTANCES

DC OK SIGNAL

-Vo = Negative DC

+Vo = Positive DC

L1 = AC (L1) Line

L2 = AC (L2) Line

L3 = AC (L3) Line

10*

= Earth ground

Grounding screw

ADJ = Output voltage adjustment

DC OK = (Green LED)

Overload = (Red LED)

Signal connector

* Pin 10 and the grounding screw (11) at the bottom,

are interconnected. Either Pin 10 or the grounding

screw (11) need to be connected to earth.

Dimension

mm (in)

80.0 (3.150)

124.0 (4.882)

127.0 (5.000)

Distance

mm (in)

50 (2.0)

100 (4.0)

FIG. 4 - MOUNTING / DISMOUNTING INSTRUCTIONS

For DIN rail fastening according to IEC 60715 TH35-7.5(-15)

Mounting as shown in figure, with input terminals on lower side, with suitable cooling and maintaining a proper distance between adjacent devices as specified in the

Installation Instruction of each family.

MOUNTING:

1. Set the top of the power supply (A) on the

top of the DIN rail (B) to latch.

Press the bottom of the power supply (D)

against the rail to lock it in the position on

the rail (C).

2. Correctly installed power supply (vertically).

3. Insert the copper wires into the top and

bottom terminals and tighten them with a

screwdriver.

4. Adjust the output voltage with a suitable tool