nextys NDD241 Series User manual

NDD241 Series
Instruction Manual
SI000023A02_I.S.NDD241.doc
www.nextys.com
Page 1/5
NDD241 Series –High Performance DIN Rail DC/DC converter
Main Features:
High efficiency and compact size
Wide input voltage range
Only 56mm width aluminum enclosure
Isolated topology (4.2kVdc)
Overload up to 150%
Constant current or hiccup mode limitation, user settable
Easy parallelable for power and redundancy (integrated ORing circuitry)
Up to 70°C operating temperature with no derating
INDEX
Page
Installation Requirements
2
Declaration of Conformity
2
User Instructions
3
Connections
4
Dimensions
4
Distances
4
Mounting
4
Dismounting
5
Input Connections
5
Environment
5
Accessory Device
5

NDD241 Series
Instruction Manual
SI000023A02_I.S.NDD241.doc
www.nextys.com
Page 2/5
READ THIS CAREFULLY BEFORE INSTALLATION!
LEGGERE ATTENTAMENTE PRIMA
DELL’INSTALLAZIONE!
A LIRE ATTENTIVEMENT AVANT L’INSTALLATION!
Before operating, read this document thoroughly and retain
it for future reference.
Non-respect of these instructions may reduce
performances and safety of the devices and cause danger
for people and property.
The products must be installed, operated, serviced and
maintained by qualified personnel in compliance with
applicable standards and regulations.
Don’t open the device, it does not contain replaceable
components, the tripping of the internal fuse (if included) is
caused by an internal failure.
Don’t repair or modify the device, if malfunction or failure
should occur during operation, send unit to the factory for
inspection. No responsibility is assumed by Nextys SA for
any consequences deriving from the use of this material.
Prima dell’installazione, leggere attentamente questo
documento istruzioni e conservarle per future consultazioni.
L’inosservanza delle presenti istruzioni può compromettere le
caratteristiche e la sicurezza dell’apparecchio e causare
pericolo per le persone e le cose.
Il prodotto deve essere installato, utilizzato e riparato da
personale qualificato e nel rispetto delle normative vigenti.
Non aprire il prodotto, esso non contiene componenti sostituibili,
il guasto del fusibile interno (se previsto) è causato da un
guasto interno. Non tentare di riparare o modificare il prodotto,
se durante il funzionamento si verificano guasti o anomalie,
inviarlo al produttore per il controllo.
Nextys SA non si assume nessuna responsabilità per
qualunque conseguenza derivante dall’uso di questo materiale.
Lisez ces instructions avant l'installation, conservez ce
manuel pour référence future.
Défaut de se conformer à ces instructions peut affecter les
caractéristiques et la sécurité du dispositif de danger et de
causer aux personnes ou aux biens.
Les produits doivent être installés, exploité et entretenus par
personnel qualifié et en conformité avec les règlements.
N'ouvrez pas le produit, il ne contient aucune pièce réparable,
le déclenchement du fusible interne (le cas échéant) est
causé par un défaut interne. Ne pas essayer de réparer ou
modifier le produit ; si des défaillances se produisent pendant
le fonctionnement ou les dysfonctionnements, le retourner au
fabricant pour inspection. Nextys SA n'assume aucune
responsabilité des conséquences éventuelles découlant de
l'utilisation des produits.
CAUTION
ATTENZIONE
AVVERTISSEMENT
RISK OF BURNS, EXPLOSION, FIRE, ELECTRICAL
SHOCK, PERSONAL INJURY.
Never carry out work on live parts! Danger of fatal injury!
The product’s enclosure may be hot, allow time for cooling
product before touching it. Do not allow liquids or foreign
objects to enter into the products.
To avoid sparks, do not connect or disconnect the device
before having previously turned-off input power and wait for
internal capacitors discharge (minimum 1 minute).
RISCHIO USTIONI, ESPLOSIONE, INCENDIO, SCOSSA,
LESIONI GRAVI.
Non effettuare mai operazioni sulle parti sotto tensione! Pericolo
di lesioni letali! Il contenitore può scottare, lasciar quindi
raffreddare il dispositivo prima di toccarlo. Non far entrare liquidi
o oggetti estranei nel dispositivo.
Per evitare scintille, non collegare o scollegare
l'apparecchiatura prima di avere tolto tensione di ingresso e
prima che sia avvenuta la scarica dei condensatori interni (min.
1 minuto).
RISQUE DE BRULURES, EXPLOSION, INCENDIE,
ELECTROCUTION, DOMMAGE AUX PERSONNES.
Ne jamais effectuer des opérations sur les parties sous
tension! Danger de mort! Le récipient peut produire des
brulures, le laisser refroidir avant de toucher l'appareil. Ne
faites pas pénétrer des liquides ou des corps étrangers dans
l'appareil. Pour éviter des étincelles, ne pas connecter ou
déconnecter l'équipement jusqu'à ce que vous avez supprimé
la tension d'entrée et avant qu'elle n'ait lieu de décharge des
condensateurs internes (minimum 1 minute).
DECLARATION OF CONFORMITY
NEXTYS SA.
Via Luserte Sud 6, 6572 Quartino - Switzerland
Phone: [phone]; Fax: [phone]
E-mail: [e-mail]
This Declaration of Conformity is suitable to the European Standard EN45014 "General criteria for supplier’s declaration of conformity".
We declare under our sole responsibility that the device included in this box, has passed all processing inspections and the final test and it is in conformity with the product
requirements, including all reference codes and supply specifications.
ROHS compliance: the product respects the EC requirements related to ROHS substances, according to “Restriction of Hazardous Substances” as per document 2011/65/UE
REACH compliance: the product respects the EC requirements related to REACH SVHC directive (EC) 1907/2006
Note: all the reported information comes from our suppliers, NEXTYS SA. has not run any test to evaluate if the specific elements are present.
All indicated devices are designed according to the latest Reference standards, if not expressly indicated through the official documents or files, they have been tested through
our internal pre-compliance testing. Consult directly on www.nextys.com the reference standards applied to each model.
Code Description
NDD241-11024P DC/DC converter with integrated ORing circuit IN 90 –345Vdc / OUT 24Vdc –10A
NDD241-11036P DC/DC converter with integrated ORing circuit IN 90 –345Vdc / OUT 48Vdc –7A
NDD241-11048P DC/DC converter with integrated ORing circuit IN 90 –345Vdc / OUT 48Vdc –5A
NDD241-11072P DC/DC converter with integrated ORing circuit IN 90 –345Vdc / OUT 72Vdc –3.3A
Certifications and approvals
Reference standards
2014/35/EU (Low Voltage Directive)
2014/30/EU (EMC directive)
EN61010-1 (Safety Standard)
EN61010-2-201 (Safety Standard)
UL508 (Safety Standard)
EN61000-6-2 (Generic immunity standard for industrial environments)
- EN61000-4-2 (Electrostatic discharge immunity test)
- EN61000-4-3 (Radiated, radio-frequency, electromagnetic field immunity test)
- EN61000-4-4 (Electrical fast transient/burst immunity test)
- EN61000-4-5 (Surge immunity test)
- EN61000-4-11 (Voltage dips, short interruptions and voltage immunity test)
EN61000-6-3 (Generic emission standard for residential environments)
- EN55011 (CISPR11 - EMC)

NDD241 Series
Instruction Manual
SI000023A02_I.S.NDD241.doc
www.nextys.com
Page 3/5
USER INSTRUCTIONS
1) Description: DIN rail mountable DC/DC converter with 90…345Vdc.
To prevent damage in case of reverse polarity, the device is protected by an internal fuse. The internal fuse is can not user replaceable.
These DC/DC converter can be used in SELV and PELV circuits.
2) Installation: use DIN-rails according to EN60715. 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. In order to guarantee sufficient convection, we recommend observing a minimum distance to other modules (see Fig.3).
The device is provided with a thermal protection; a limited air flow can cause the thermal protection tripping.
The SMPS automatically restarts 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 pluggable screw terminals. 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)
Use appropriate copper cables of indicated cross section, designed for an operating temperatures of:
60°C for ambient up to 45°C
75°C for ambient up to 60°C
90°C for ambient up to 70°C
Strip the connecting ends of the wires according to the indication and ensure that all strands of a stranded wire enter the terminal connection (see Fig.5)
4) Input protection: the device input is provided with varistors against overvoltage. Input is provided with internal fuses 8AT/250Vac, 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 on the phase must be provided.
Surge protection: it is strongly recommended to provide external surge arresters (SPD) according to local regulations.
5) DC input connection: connect (+) to positive pole, (-) to negative pole and terminal to GND. Rated voltage 90...345Vdc.
The device is also suitable for photovoltaic or wind turbine applications (see Fig.7).
6) Output connection: The device is suitable for SELV and PELV circuitry. Pay attention NDD241-11072P is not SELV.
Uout can be adjusted with a potentiometer to a wide range (see Fig.1)
Check Uout before connecting the power supply to the load. With output voltage set to the max. value, the continuous [current x voltage] must not exceed the nominal power.
7) Parallel connection and redundancy: power supplies can be connected in parallel to increase power. For paralleling for power set the Ilim jumper to C.C. algorithm.
Uout must be set uniformly (±100mV) on each power supply and the wiring must be symmetrical to ensure an equal current distribution.
Models with “P” suffix have an integrated ORing circuit.
For redundant connection, use the Models “P” or an external isolating device must be used (see accessory device).
8) Output protection: the device is protected against overload (OL) / short circuit (SC) / overvoltage (OV) / overtemperature (OT).
OL and SC: are controlled by a hiccup mode or a constant current (C.C.) mode protection with the following behaviour.
The Hiccup mode or C.C. mode are selectable with Jumper (see Fig.1)
OL behaviour in hiccup mode: Max. OL = 1.5 x In the output voltage remains constant at nominal voltage for 5s and after that time the device starts an ON/OFF cycle.
OL behaviour in C.C. mode: the maximum output current is limited at 1.1 x In if the load resistance is further decreased the output voltage starts to drop.
SC behaviour in hiccup mode: the device supplies 1.5 x In for 5s, after that time it switches off for 10s. The ON/OFF cycle is repeated continuously.
SC behaviour in C.C. mode: the device supplies 1.1 x In continuously into the short circuit without switching off
Output OV circuit protection: the output is protected against potential OV due to internal malfunction or coming from the load for Uout Unom x 1.2 –1.3, depending on the
model.
OT protection: turns off the device if the internal temperature exceeds a safe limit.
The device restarts automatically after cooling down. To recover to normal operation reduce air temperature surrounding the power supply, increase cooling or reduce load
(see Fig.8).
9) Feeding DC motors: it is possible to feed DC motors considering that when a motor starts-up under effort its consumption is much higher than the nominal current and it can
trigger overcurrent protection (see accessory device). For these applications the C.C. (Constant Current) mode of current limitation is recommended.
NOTE: motors can generate high conducted noise on the DC line. Therefore it is not recommended to feed on the same line motors and equipment sensitive to noise.
10) Operation with Battery: when a battery is connected in parallel to the Output for backup purposes; the NDD241 must be set on C.C. mode to avoid battery over-charging
(see accessory device).

NDD241 Series
Instruction Manual
SI000023A02_I.S.NDD241.doc
www.nextys.com
Page 4/5
Fig.1
Connections
Fig.2
Dimensions
Fig.3
Distances
Just for reference
(1) DC input
(2) DC output (load)
(3) Diagnostic Output
(dry contact, NC output OK)
(4) Green LED: Output OK
(5) Red LED: Overload
(6) Output voltage adjustment
(7) Selectable limitation mode
(Hiccup mode, C.C. mode)
Input DC Line:
+ = Positive DC
- = Negative DC
= earth ground
Output:
+ = Positive DC
- = Negative DC
Dry contact = NC
Dimension
W
D
H
mm (inch)
56 (2.20)
117 (4.60)
140 (5.51)
Distance
A
B
mm (inch)
20 (0.8)
100 (3.9)
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 I.S.
manual of each family.
Mounting:
1. Tilt the unit slightly backwards.
2. Fit the unit over the top edge of the rail.
3. Slide it downward until it hits the stop.
4. Press against the bottom for locking.
1
2
3
4

NDD241 Series
Instruction Manual
SI000023A02_I.S.NDD241.doc
www.nextys.com
Page 5/5
Dismounting:
1. Pull down the slide clamp lever
2. Tilt the unit upward
3. Unhook the unit from the rail
1 & 2
3
Fig.5
Recommended connecting cable
Recommended Tightening torque
0.5-0.6 Nm
4.42-5.30 lbf in
Solid: 2.5mm² / 12AWG
Stranded:1.5mm² / 12AWG
L: 6.0-7.5mm / 0.24-0.30 in
Fig.6
Input protection
Fuse MCB 10A C curve.
For USA and Canada, use the fuse type closest to the European equivalent type.
Surge protection: it is strongly recommended to provide external surge arresters (SPD) according to local regulations.
Fig.7
Input connections
DC Line
Fig.8
Environment
Operating temperature
Derating
- 40°C…70°C
5…95% r.H. non condensing
Overtemperature protection
No Derating
Note:
Data may change without prior notice in order to improve the product.
Please refer to the latest version of the "Instruction Manual" for each product by visiting www.nextys.com
See also the products below that can be used in conjunction with NDD241 units: (accessory device)
OR20 20A Active ORing controller
OR50 50A Active ORing controller
DCU20 20A High performance DC UPS
BU150U 150J Buffer Module
NCP12 12V Super capacitors Module
NUPS12/24 Battery charger and DC UPS Module
MBC2K 2000W Motor brake controller
NBP30 Sealed Lead acid Battery pack