Elektro-Automatik Operating Guide ENS2 Doc ID: ENS2EN Revision: 04 Date: 08-16-2019
ENS2 TABLE OF CONTENTS 1 2 3 4 5 6 GENERAL 1.1 1.1.1 1.1.2 1.1.3 1.1.4 1.2 1.3 1.4 1.5 1.6 1.6.1 1.6.2 1.6.3 1.6.4 1.7 1.7.1 1.7.2 1.7.3 1.7.4 1.7.5 1.8 1.8.1 1.8.2 1.8.3 1.8.4 About this document..........................................................................................................................................4 Retention and use..............................................................................................................................................
ENS2 1. General 1.1 About this document 1.1.1 Retention and use This document is to be kept in the vicinity of the equipment for future reference and explanation of the operation of the device. This document is to be delivered and kept with the equipment in case of change of location and/or user. 1.1.2 Copyright Reprinting, copying, also partially, usage for other purposes as foreseen of this manual are forbidden and breach may lead to legal process. 1.1.
ENS2 1.4 Disposal of equipment 1.5 Intended usage A piece of equipment which is intended for disposal must, according to European laws and regulations (ElektroG, WEEE) be returned to the manufacturer for scrapping, unless the person operating the piece of equipment or another, delegated person is conducting the disposal.
ENS2 1.6.3 Responsibility of the operator Operator is any natural or legal person who uses the equipment or delegates the usage to a third party, and is responsible during its usage for the safety of the user, other personnel or third parties. The equipment is in industrial operation. Therefore the operators are governed by the legal safety regulations. Alongside the warning and safety notices in this manual the relevant safety, accident prevention and environmental regulations must also be applied.
ENS2 1.7 Technical data 1.7.1 Approved operating conditions • Use only inside dry buildings • Operational altitude: max. 2000 m above sea level • Max 80% RH up to 30 °C, linear decrease to 50% RH at 50 °C 1.7.2 Specifications Model AC supply AC voltage, nominal AC frequency, nominal AC frequency, range Required phases ENS2 ENS2 10.5kW ENS2 30kW 230 V (L-N) / 400 V (L-L) 50 Hz 48...52 Hz L1, L2, L3, N, PE 230 V (L-N) / 400 V (L-L) 50 Hz 48...
ENS2 1.7.3 Views Figure 1 - Front view of ENS2 (all variants) Page 8 EA Elektro-Automatik GmbH Helmholtzstr. 31-33 • 41747 Viersen Germany Fon: +49 2162 / 3785-0 Fax: +49 2162 / 16230 www.elektroautomatik.de ea1974@elektroautomatik.
ENS2 Figure 2 - Rear view of ENS2 10.5kW (with contactors) EA Elektro-Automatik GmbH Helmholtzstr. 31-33 • 41747 Viersen Germany Fon: +49 2162 / 3785-0 Fax: +49 2162 / 16230 Figure 3 - Side view of ENS2 10.5kW www.elektroautomatik.de ea1974@elektroautomatik.
ENS2 Figure 4 - Rear view of ENS2 (without contactors) Page 10 EA Elektro-Automatik GmbH Helmholtzstr. 31-33 • 41747 Viersen Germany Figure 5 - Side view of ENS2 Fon: +49 2162 / 3785-0 Fax: +49 2162 / 16230 www.elektroautomatik.de ea1974@elektroautomatik.
ENS2 Figure 6 - Rear view of ENS2 30kW (with contactors) EA Elektro-Automatik GmbH Helmholtzstr. 31-33 • 41747 Viersen Germany Fon: +49 2162 / 3785-0 Fax: +49 2162 / 16230 Figure 7 - Side view of ENS2 30kW www.elektroautomatik.de ea1974@elektroautomatik.
ENS2 Figure 8 - Control panel 1.7.
ENS2 1.8 Construction and function 1.8.1 General description The module ENS2 is a separately installed, integrated grid protection equipment, also called automatic isolation unit (AIU), designed to meet german standard VDE-AR-N 4105. The specifications of that standard are suitable for most european countries running three-phase supplies 400V (L-L) resp. 230V (L-N).
ENS2 1.8.3 Relay blockade The italian standard CEI 0-21 requires to start a ”relay blockage“ in case of relay failure and if the AIU is installed with two contactors (”Number of relays” = 2). If any of the contactors would not break correctly after a cut-off has been initiated, the AIU would be blocked and could only switch on again after the blockade has been acknowledged manually, but pushing a button. The blockage would be even remain after a reset of the AIU.
ENS2 2. Installation & commission 2.1 Unpacking and visual check 2.2 Installation 2.2.1 Preparation After every transport, with or without packaging, or before commissioning, the equipment should be visually inspected for damage and completeness using the delivery note and/or parts list (see section „1.7.5. Scope of delivery“). An obviously damaged device (e.g. loose parts inside, damage outside) must under no circumstances be put in operation.
N N L1 L1 L2 L2 L3 L3 Schütz 1 Contactor 1 Schütz 2 Contactor 2 R1 R2 K1 K2 Consumer(s) Public grid ENS2 R3 R4 ENS2 N L1 L2 L3 Figure 9 - Wiring scheme of installation without feedback contact N N L1 L1 L2 L2 L3 L3 Schütz 1 Contactor 1 Consumer(s) Public grid 2.2.2.2 Type 2: With feedback contact Installation type 2 and its wiring uses 5-pole or 4-pole contactors with extra feedback contact.
ENS2 2.2.3 Wiring of version „ENS2“ Version „ENS2“ is delivered without contactors. Connections from and to the module are lead out to screw terminals and are wired by the installer according to one of the wiring schemes above (type 1 or 2) and connected to the external contactors. 2.2.3.1 Additionally required material (not included) • 4-wire or 5-wire, inflexible or flexible cables with a cross section matching the max.
ENS2 2.2.4 Wiring of versions „ENS2 10.5kW“ and “ENS2 30kW” These two versions are delivered with included, mounted and wired contactors which allow for following load: • Model ENS2 10.5kW (max. 16 A of current, max. 10.5 kW of power): »» up to 3x ELR 9000 device possible • Model ENS2 30kW (max. 45 A of current, max.
ENS2 3. Setup & handling 3.1 Menu structure Language Parameter display Voltage N-L Voltage L-L Frequency Connection limits Connection times Error messages Configuration Clear errors Info Overview 3.
ENS2 3.3 The status row Following statuses can be displayed in the status row of the main screen: LOCKED While any parameter is currently changed, the ENS2 module is prevented from switching the contactors on. Then the power generation device is cut from the grid. START Displayed during the start-up phase of the supervision circuit after powering it. This take about a minute. The contactors are switched off (break) during this period.
ENS2 3.3.1.2 Relay errors A relay/contactor error is displayed with a leading “R:”, derived from the “relay”, because there are internal relays which switch the bigger, external contactors. These errors are related to both. List of possible relay errors: K1>> The voltage on feedback contact K1 (from contactor 1) is too high. This can mean that the feedback signal from contactor 1 is permanent, because of connector K1 being directly connected to phase L1 instead of only after switching the relay on R1R2.
ENS2 3.4 Relay triggering test A manual relay test can be triggered by pushing the middle button for longer than 3s. This causes both relay/contactors to switch off and the display to show an error which will vanish automatically after one minute. Before you can trigger the test, push the top button shortly (main display), so the display changes to show this: After the test has started, the display will additionally show “→ Relay action triggered“. 4.
ENS2 4.2 Error messages This screen lists the last 12 error messages, which caused the AIU to cut off. Error entries in the list is built like this: Error number: (R) ID ERROR ABBREVIATION TIME ELAPSED SINCE OCCURRENCE The higher the error number (1-9, A=10, B=11, C=12), the longer ago. A leading ”R“ indicates, that the error occurred the last time before the supervision was disconnected from mains. Next is an ID, which identifies the error.
ENS2 Frequency errors ID Abbreviation 55 f> 56 fc< 57 fc> Meaning Frequency too high Frequency too low Frequency too high Hardware errors ID Abbreviation 73 PAR 82 PAR Meaning Erroneous parameter(s) The “country data sets” of both microcontrollers do not match At the end of an error entry there is a value to tell the time that has elapsed since the error occurred: s = seconds, m = minutes, h = hours, d = days, w = weeks, y = years.
ENS2 6. Service & Support 6.1 Repairs 6.2 Contact options Repairs, if not otherwise arranged between supplier and customer, will be carried out by the manufacturer. For this the device must generally be returned to the manufacturer. No RMA number is needed. It is sufficient to package the equipment adequately and send it, together with a detailed description of the fault and, if still under guarantee, a copy of the invoice, to the following address.
EA-Elektro-Automatik GmbH & Co. KG Development - Production - Sales Helmholtzstraße 31-37 41747 Viersen Germany Fon: +49 2162 / 37 85-0 Fax: +49 2162 / 16 230 Mail: ea1974@elektroautomatik.de Web: www.elektroautomatik.
