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Elektro-Automatik ELR 9000 Operating Manual

Electronic dc load with energy recovery
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Operating Manual
ELR 9000
Electronic DC Load with
Energy Recovery
Attention! This document is only
valid for devices with firmware
"KE: 2.25" (standard version)
resp. "KE: 2.08" (GPIB, 3W)
and "HMI: 2.15" and "DR: 1.6.5"
or higher. For availability of up-
dates for your device check our
website or contact us.
Doc ID: ELR9TEN
Revision: 07
Date: 11/2018

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Summary of Contents for Elektro-Automatik ELR 9000

  • Page 1 Operating Manual ELR 9000 Electronic DC Load with Energy Recovery Attention! This document is only valid for devices with firmware “KE: 2.25” (standard version) resp. “KE: 2.08” (GPIB, 3W) and “HMI: 2.15” and “DR: 1.6.5” or higher. For availability of up-...

  • Page 3: Table Of Contents

    ELR 9000 Series TABLE OF CONTENTS GENERAL About this document ........5 2.3.5 Connection to DC sources ......38 1.1.1 Retention and use ..........5 2.3.6 Grounding of the DC input ......39 1.1.2 Copyright ............5 2.3.7 Connection of remote sensing ....39 1.1.3 Validity ............5 2.3.8...
  • Page 4 ELR 9000 Series 3.10.1 Introduction...........69 3.10.2 General ............69 3.10.3 Method of operation ........70 3.10.4 Manual operation .........70 3.10.5 Sine wave function ........71 3.10.6 Triangular function ........72 3.10.7 Rectangular function ........72 3.10.8 Trapezoidal function ........73 3.10.9 DIN 40839 function ........73 3.10.10 Arbitrary function ..........74 3.10.11 Ramp function ..........78...

  • Page 5: General

    Limit of liability All statements and instructions in this manual are based on current norms and regulations, up-to-date technology and our long term knowledge and experience. EA Elektro-Automatik accepts no liability for losses due to: • Usage for purposes other than defined • Use by untrained personnel...

  • Page 6: Disposal Of Equipment

    A piece of equipment which is intended for disposal must, according to European laws and regulations (ElektroG, WEEE) be returned to EA Elektro-Automatik for scrapping, unless the person operating the piece of equipment or another, delegated person is conducting the disposal. Our equipment falls under these regulations and is accord-...

  • Page 7: Safety

    ELR 9000 Series Safety 1.7.1 Safety notices Mortal danger - Hazardous voltage • Electrical equipment operation means that some parts will be under dangerous voltage. Therefore all parts under voltage must be covered! • All work on connections must be carried out under zero voltage (input not connected to voltage sources) and may only be performed by qualified and informed persons.

  • Page 8: Responsibility Of The Operator

    ELR 9000 Series 1.7.3 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.

  • Page 9: Alarm Signals

    ELR 9000 Series 1.7.5 Alarm signals The device offers various possibilities for signalling alarm conditions, however, not for danger situations. The sig- nals may be optical (on the display as text) acoustic (piezo buzzer) or electronic (pin/status output of an analog interface).

  • Page 10: Specific Technical Data (230 V Models)

    ELR 9000 Series 1.8.3 Specific technical data (230 V models) Model 230 V 3.5 kW ELR 9080-170 ELR 9250-70 ELR 9500-30 ELR 9750-22 AC Input/Output Input/output voltage 195...253 V L-N 195...253 V L-N 195...253 V L-N 195...253 V L-N Input/output connection...
  • Page 11 ELR 9000 Series Model 230 V 3.5 kW ELR 9080-170 ELR 9250-70 ELR 9500-30 ELR 9750-22 Analog interface Set value inputs U, I, P, R Actual value output U, I Control signals DC on/off, remote control on/off, resistance mode on/off...

  • Page 12: Elr 9080-340

    ELR 9000 Series Model 230 V 7 kW ELR 9080-340 ELR 9250-140 ELR 9500-60 ELR 9750-44 ELR 91000-30 AC Input/Output 195...253 V L-N 195...253 V L-N 195...253 V L-N 195...253 V L-N 195...253 V L-N Input/output voltage 340...440 V L-L 340...440 V L-L...
  • Page 13 ELR 9000 Series Model 230 V 7 kW ELR 9080-340 ELR 9250-140 ELR 9500-60 ELR 9750-44 ELR 91000-30 Analog interface Set value inputs U, I, P, R Actual value output U, I Control signals DC on/off, remote control on/off, resistance mode on/off...

  • Page 14: Elr 9080-510

    ELR 9000 Series Model 230 V 10.5 kW ELR 9080-510 ELR 9250-210 ELR 9500-90 ELR 9750-66 ELR 91500-30 AC Input/Output 195...253 V L-N 195...253 V L-N 195...253 V L-N 195...253 V L-N 195...253 V L-N Input/output voltage 340...440 V L-L 340...440 V L-L...
  • Page 15 ELR 9000 Series Model 230 V 10.5 kW ELR 9080-510 ELR 9250-210 ELR 9500-90 ELR 9750-66 ELR 91500-30 Analog interface Set value inputs U, I, P, R Actual value output U, I Control signals DC on/off, remote control on/off, resistance mode on/off...

  • Page 16: Specific Technical Data (208 V Models)

    ELR 9000 Series 1.8.4 Specific technical data (208 V models) Model 208 V 3.1 kW ELR 9080-170 ELR 9250-70 ELR 9500-30 ELR 9750-22 AC Input/Output Input/output voltage 208 V, ±10%, L-L 208 V, ±10%, L-L 208 V, ±10%, L-L 208 V, ±10%, L-L...
  • Page 17 ELR 9000 Series Model 208 V 3.1 kW ELR 9080-170 ELR 9250-70 ELR 9500-30 ELR 9750-22 Analog interface Set value inputs U, I, P, R Actual value output U, I Control signals DC on/off, remote control on/off, resistance mode on/off...
  • Page 18 ELR 9000 Series Model 208 V 6.2 kW ELR 9080-340 ELR 9250-140 ELR 9500-60 ELR 9750-44 ELR 91000-30 AC Input/Output Input/output voltage 208 V, ±10%, L-L 208 V, ±10%, L-L 208 V, ±10%, L-L 208 V, ±10%, L-L 208 V, ±10%, L-L...
  • Page 19 ELR 9000 Series Model 208 V 6.2 kW ELR 9080-340 ELR 9250-140 ELR 9500-60 ELR 9750-44 ELR 91000-30 Analog interface Set value inputs U, I, P, R Actual value output U, I Control signals DC on/off, remote control on/off, resistance mode on/off...
  • Page 20 ELR 9000 Series Model 208 V 9.3 kW ELR 9080-510 ELR 9250-210 ELR 9500-90 ELR 9750-66 ELR 91500-30 AC Input/Output Input/output voltage 208 V, ±10%, L-L 208 V, ±10%, L-L 208 V, ±10%, L-L 208 V, ±10%, L-L 208 V, ±10%, L-L...
  • Page 21 ELR 9000 Series Model 208 V 9.3 kW ELR 9080-510 ELR 9250-210 ELR 9500-90 ELR 9750-66 ELR 91500-30 Analog interface Set value inputs U, I, P, R Actual value output U, I Control signals DC on/off, remote control on/off, resistance mode on/off...

  • Page 22: Views

    ELR 9000 Series 1.8.5 Views Figure 1 - Front view Figure 2 - Rear view of standard version (figure shows EU model) EA Elektro-Automatik GmbH Fon: +49 2162 / 3785-0 www.elektroautomatik.de Page 22 Helmholtzstr. 31-37 • 41747 Viersen Fax: +49 2162 / 16230 ea1974@elektroautomatik.de...
  • Page 23 ELR 9000 Series EA Elektro-Automatik GmbH Fon: +49 2162 / 3785-0 www.elektroautomatik.de Page 23 Helmholtzstr. 31-37 • 41747 Viersen Fax: +49 2162 / 16230 ea1974@elektroautomatik.de Germany...
  • Page 24 ELR 9000 Series Figure 5 - Top view EA Elektro-Automatik GmbH Fon: +49 2162 / 3785-0 www.elektroautomatik.de Page 24 Helmholtzstr. 31-37 • 41747 Viersen Fax: +49 2162 / 16230 ea1974@elektroautomatik.de Germany...

  • Page 25: Control Elements

    ELR 9000 Series 1.8.6 Control elements Figure 6- Control Panel Overview of the elements on the control panel For a detailed description see section „1.9.6. The control panel (HMI)“ and „1.9.6.2. Rotary knobs“. Touchscreen display Used for selection of set values, menus and settings, as well as display of actual values and status.

  • Page 26: Construction And Function

    General description The electronic high performance loads of the ELR 9000 series are especially suitable for test systems and industrial controls due to their compact construction of a 19” enclosure with 3 height units (3U). Apart from basic functions of electronic loads, set point curves can be generated in the integrated function generator (sine, rectangular, triangular and other curve types).

  • Page 27: Scope Of Delivery

    ENS2 External automatic isolation unit (AIU, former german name: ENS) with contactors (for one ELR 9000 up to 10.5 kW) or without contactors (bigger system where Automatic Isolation Unit contactors are installed by the user), which might be required to be installed for the operation of an energy recovering device which is connected to a public grid.

  • Page 28: The Control Panel (Hmi)

    ELR 9000 Series 1.9.6 The control panel (HMI) The HMI (Human Machine Interface) consists of a display with touchscreen, two rotary knobs, a button and an USB port. 1.9.6.1 Touchscreen display The graphic touchscreen display is divided into a number of areas. The complete display is touch sensitive and can be operated by finger or stylus to control the device.
  • Page 29 ELR 9000 Series • Status display (upper right) This area displays various status texts and symbols: Display Description Locked The HMI is locked Unlocked The HMI is unlocked Remote: The device is under remote control from..Analog ..the built-in analog interface USB &...
  • Page 30 ELR 9000 Series 1.9.6.4 Resolution of the displayed values In the display, set values can be adjusted in fixed increments. The number of decimal places depends on the device model. The values have 3 to 5 digits. Actual and set values always have the same number of digits.

  • Page 31: Usb Port (Rear Side)

    The device can be addressed via this port either using the international standard ModBus RTU protocol or by SCPI language. The device recognises the message protocol used automatically. Details for remote control can be found on the web site of Elektro-Automatik or on the included medium.

  • Page 32: Share Connector

    ELR 9000 Series 1.9.10 Share connector The 2 pole socket (“Share”) on the back side of the device is provided for connection to equally named sockets on compatible electronic loads when establishing parallel connection where symmetric current distribution is required, as well as compatible power supplies to build a two-quadrants operation setup.

  • Page 33: Installation & Commissioning

    2.1.2 Packaging It is recommended to keep the complete transport packaging for the lifetime of the device for relocation or return to Elektro-Automatik for repair. Otherwise the packaging should be disposed of in an environmentally friendly way. 2.1.3 Storage In case of long term storage of the device it is recommended to use the original packaging or similar. Storage must be in dry rooms, if possible in sealed packaging, to avoid corrosion, especially internal, through humidity.

  • Page 34: Preparation

    Preparation Mains connection of an energy back-feeding electronic load of ELR 9000 series is done via the included 5 pole plug on the back of the device. Wiring of the plug is at least 3 strand or, for some models, 5 strand of suitable cross section and length.

  • Page 35: Mains Connection (Ac)

    ELR 9000 Series 2.3.4 Mains connection (AC) • Connection to an AC mains supply may only be carried out by qualified personnel! • Cable cross section must be suitable for the maximum input/output current of the device (see table below)! • Before plugging in the input plug ensure that the device is switched off by its mains switch!
  • Page 36 ELR 9000 Series 2.3.4.2 Models for 208 V Unlike the 230 V versions which use phases L and N for supply, the “US 208 V” models (see model name addition on the type plate) make use of L-L voltage of the common US 120 V three-phase supply. The included mains plug is 4-pole, means three phases plus ground (PE).
  • Page 37 This applies the same way for all other ELR 9000 power ratings. The existing installation concept must be taken into regard when connecting further ELR 9000 units and consum- ers in order to avoid damages and accidents. Schematic depiction with 1 recovering load:...

  • Page 38: Connection To Dc Sources

    ELR 9000 Series 2.3.5 Connection to DC sources In the case of a device with a high nominal current and hence a thick and heavy DC connec- tion cable it is necessary to take account of the weight of the cable and the strain imposed on the DC connection.

  • Page 39: Grounding Of The Dc Input

    ELR 9000 Series Examples of the type 1 terminal: • 90 ° up or down • space saving in depth • no bending radius • horizontal lead • space saving in height • large bending radius 2.3.6 Grounding of the DC input Grounding one of the DC input poles is allowed.

  • Page 40: Connecting The "Share" Bus

    Installation of an interface module The various interface modules, which are available for ELR 9000 standard version models with Interface slot, can be retrofitted by the user and are exchangeable with each other. The settings for the currently installed module vary and need to be checked and, if necessary, corrected on initial installation and after module exchange.

  • Page 41: Connecting The Analog Interface

    ELR 9000 Series 2.3.10 Connecting the analog interface The 15 pole connector (Type: Sub-D, D-Sub) on the rear side is an analog interface. To connect this to a control- ling hardware (PC, electronic circuit), a standard plug is necessary (not included in the scope of delivery). It is generally advisable to switch the device completely off before connecting or disconnecting this connector, but at least the DC input.

  • Page 42: Operation And Application

    ELR 9000 Series Operation and application Personal safety • In order to guarantee safety when using the device, it is essential that only persons operate the device who are fully acquainted and trained in the required safety measures to be taken when working with dangerous electrical voltages • For models which accept dangerous voltages, the included DC terminal cover, or an equivalent,...

  • Page 43: Current Regulation / Constant Current / Current Limitation

    ELR 9000 Series 3.2.2 Current regulation / constant current / current limitation Current regulation is also known as current limitation or constant current mode (CC) and is fundamental to the normal operation of an electronic load. As soon as the DC input current reaches the adjusted current set value, the device automatically switches to constant current mode.

  • Page 44: Alarm Conditions

    ELR 9000 Series Alarm conditions This section only gives an overview about device alarms. What to do in case your device indi- cates an alarm condition is described in section „3.6. Alarms and monitoring“. As a basic principle, all alarm conditions are signalled optically (text + message in the display), acoustically (if activated) and as a readable status and alarm counter via the digital interface.

  • Page 45: Manual Operation

    ELR 9000 Series Manual operation 3.4.1 Powering the device The device should, as far as possible, always be switched on using the rotary switch on the front of the device. Alternatively this can take place using an external cutout (contactor, circuit breaker) of suitable current capacity.
  • Page 46 ELR 9000 Series EA Elektro-Automatik GmbH Fon: +49 2162 / 3785-0 www.elektroautomatik.de Page 46 Helmholtzstr. 31-37 • 41747 Viersen Fax: +49 2162 / 16230 ea1974@elektroautomatik.de Germany...
  • Page 47 ELR 9000 Series EA Elektro-Automatik GmbH Fon: +49 2162 / 3785-0 www.elektroautomatik.de Page 47 Helmholtzstr. 31-37 • 41747 Viersen Fax: +49 2162 / 16230 ea1974@elektroautomatik.de Germany...
  • Page 48 ELR 9000 Series EA Elektro-Automatik GmbH Fon: +49 2162 / 3785-0 www.elektroautomatik.de Page 48 Helmholtzstr. 31-37 • 41747 Viersen Fax: +49 2162 / 16230 ea1974@elektroautomatik.de Germany...
  • Page 49 ELR 9000 Series EA Elektro-Automatik GmbH Fon: +49 2162 / 3785-0 www.elektroautomatik.de Page 49 Helmholtzstr. 31-37 • 41747 Viersen Fax: +49 2162 / 16230 ea1974@elektroautomatik.de Germany...
  • Page 50 ELR 9000 Series 3.4.3.1 Menu “General Settings” Setting P. Description Allow remote control Selection “NO” means that the device cannot be remotely controlled over either the digital or analog interfaces. If remote control is not allowed, the status will be shown as “Local”...
  • Page 51 ELR 9000 Series Setting P. Description Enable R mode Activates (“Yes”) or deactivates (“No”) the internal resistance control. If activated, the resistance set value can be adjusted on the main screen as additional value. For details refer to „3.2.3. Resistance regulation / constant resistance“...
  • Page 52 ELR 9000 Series IF Level 1 Description Node Address Selection of the Profibus or node address of the device within range 1...125 via direct input Function Tag String input box for a user-definable text which describes the Profibus slave function tag.
  • Page 53 ELR 9000 Series IF Level 1 Description Host name Free choice of host name (default: Client) Domain name Free choice of Domain (default: Workgroup) Function Tag String input box for a user-definable text which describes the Profinet slave function tag. Max. length: 32 characters...
  • Page 54 ELR 9000 Series IF Level 1 Description Baud rate The baud rate is selectable, other serial settings can’t be changed and are defined like this: 8 data bits, 1 stop bit, parity = none Baud rates: 2400, 4800, 9600, 19200, 38400, 57600, 115200...

  • Page 55: Adjustment Limits

    Changing the operating mode In general, the manual operation of an ELR 9000 distinguishes between three operating modes (U/I, P/I, R/I) which are tied to set value input using the rotary knobs or ten-key pad: This assignment must be changed if one of the four set values is to be adjusted which is currently not available.

  • Page 56: Manual Adjustment Of Set Values

    ELR 9000 Series 3.4.6 Manual adjustment of set values The set values for voltage, current, power and resistance are the fundamental operating possibilities of an elec- tronic load and hence the two rotary knobs on the front of the device are always assigned to two of the four values in manual operation.

  • Page 57: The Meter Bars

    ► How to remotely switch the DC input on or off via the digital interface See the external documentation “Programming Guide ModBus & SCPI” if you are using custom software, or refer to the external documentation of LabView VIs or other documentation provided by EA Elektro-Automatik. EA Elektro-Automatik GmbH Fon: +49 2162 / 3785-0 www.elektroautomatik.de...

  • Page 58: Recording To Usb Stick (Logging)

    ELR 9000 Series 3.4.10 Recording to USB stick (logging) Device data can be recorded to USB stick (2.0 / 3.0 may work, but not all vendors are supported) anytime. For specifications of the USB stick and the generated log files refer to section „1.9.6.5. USB port (front side)“.

  • Page 59: Remote Control

    Models with option 3W installed offer a GPIB port instead of the interface module slot, which makes it impossible to install and use any of these interface modules. The standard models of series ELR 9000 support, in addition to the built-in USB port, the following optionally available interface modules:...

  • Page 60: Remote Control Via The Analog Interface (Ai)

    General information about the interface modules With the standard models of series ELR 9000, one of the plug-in and retrofittable modules listed in 3.5.3.1 can be installed. It can take over remote control of the device alternatively to the built-in USB type B on the back side or the analog interface.
  • Page 61 ELR 9000 Series 3.5.4.2 Resolution and sample rate The analog interface is internally sampled and processed by a digital microcontroller. This causes a limited resolu- tion of analog steps. The resolution is the same for set values (VSEL etc.) and actual values (VMON/CMON) and is 26214 when working with the 10 V range.
  • Page 62 ELR 9000 Series 3.5.4.5 Overview of the Sub-D Socket 3.5.4.6 Simplified diagram of the pins Digital Input (DI) Analog Input (AI) It requires to use a switch with low resist- High resistance input (impedance V~0.5 ance (relay, switch, circuit breaker etc.) in >40 k..100 kΩ) for an OA circuit.
  • Page 63 ELR 9000 Series • Remote control is not active In this mode of operation pin “REM-SB” can serve as lock, preventing the DC input from being switched on by any means. This results in following possible situations: Parameter Level of pin „Analog...

  • Page 64: Alarms And Monitoring

    ELR 9000 Series Alarms and monitoring 3.6.1 Definition of terms There is a clear distinction between device alarms (see „3.3. Alarm conditions“), such as overvoltage protection, and user defined events such as OCD (overcurrent detection). Whilst device alarms primarily serve to protect the connected DC source by switching the DC input off, user defined events can do the same (action = ALARM), but can also simply give an acoustic signal to make the user aware.
  • Page 65 ELR 9000 Series Some device alarms are configurable: Alarm Meaning Description Range Indication OverVoltage Triggers an alarm if the DC input voltage reaches the Display, analog 0 V...1.1*U Protection defined threshold. The DC input will be switched off. IF, digital IF...
  • Page 66 ELR 9000 Series 3.6.2.1 User defined events The monitoring functions of the device can be configured for user defined events. By default, events are deactivated (action = NONE). Contrary to device alarms, the events only work while the DC input is switched on. It means, for instance, that you cannot detect undercurrent (UCD) anymore after switching the DC input off though the input current then sinks to zero immediately.

  • Page 67: Control Panel (Hmi) Lock

    ELR 9000 Series Control panel (HMI) lock In order to avoid the accidental alteration of a value during manual operation, the rotary knobs or the touchscreen can be locked so that no alteration of values will be accepted without prior unlocking.

  • Page 68: Loading And Saving A User Profile

    ELR 9000 Series Loading and saving a user profile The menu “Profiles” serves to select between a default profile and up to 5 user profiles. A profile is a collection of all settings and set values. Upon delivery, or after a reset, all 6 profiles have the same settings and all set values are 0.

  • Page 69: The Function Generator

    ELR 9000 Series 3.10 The function generator 3.10.1 Introduction The built-in function generator is able to create various signal forms and apply these to the set value of voltage or current. The standard functions are based on an arbitrary generator and directly accessible and configurable using manual control.

  • Page 70: Method Of Operation

    ELR 9000 Series 3.10.3 Method of operation In order to understand how the function generator works and how the value settings interact, the following should be noted: The device operates always with the three set values U,I and P, also in function generator mode.

  • Page 71: Sine Wave Function

    ELR 9000 Series ► How to load a function After setting the values for the required signal generation, tap on the touch area The device will then load the data into the internal controller and changes the display. Shortly afterwards the static values are set (power and voltage or current), the DC input is switched on and the touch area enabled.

  • Page 72: Triangular Function

    ELR 9000 Series 3.10.6 Triangular function The following parameters can be configured for a triangular wave function: Value Range Description I(A), U(A) 0...(Nominal value - (Offs)) of U, I A = Amplitude of the signal to be generated I(Offs), U(Offs) 0...(Nominal value - (A)) of U, I Offs = Offset, based on the foot of the triangular wave 0.1 ms...36000 s...

  • Page 73: Trapezoidal Function

    ELR 9000 Series 3.10.8 Trapezoidal function The following parameters can be configured for a trapezoidal curve function: Value Range Description I(A), U(A) 0...(Nominal value - (Offs)) of U, I A = Amplitude of the signal to be generated I(Offs), U(Offs) 0...(Nominal value - (A)) of U, I Offs = Offset, based on the foot of the trapezium 0.1 ms...36000 s...

  • Page 74: 3.10.10 Arbitrary Function

    ELR 9000 Series 3.10.10 Arbitrary function The arbitrary, i. e freely definable function offers the user further scope. There are 99 sequence points available for use on current or voltage. These points all have the same configurable parameters which allow to build a complex function process.
  • Page 75 ELR 9000 Series Schematic diagram: Applications and results: Example 2 The DC values at start and end are the same but the AC (amplitude) not. The end value is higher than the start so that the amplitude increases with each new half sine wave continuously through the sequence.
  • Page 76 ELR 9000 Series By linking together a number of differently configured sequences, complex progressions can be created. Smart configuration of the arbitrary generator can be used to match triangular, sine, rectangular or trapezoidal wave func- tions and thus, e.g. a sequence of rectangular waves with differing amplitudes or duty cycles could be produced.
  • Page 77 ELR 9000 Series 3.10.10.1 Loading and saving the arbitrary function The 99 sequence points of the arbitrary function, which can be manually configured with the control panel of the device and which are applicable either to voltage (U) or current (I), can be saved to or loaded from a common USB stick via the front side USB port.

  • Page 78: Ramp Function

    ELR 9000 Series ► How to save a sequence table to an USB stick: Do not plug the USB stick yet or remove it. Access the function selection menu of the function generator via MENU -> Function Generator -> Arbitrary...
  • Page 79 ELR 9000 Series Uploading of a table from an USB stick must use text files in CSV format (.csv). Plausibility is checked on loading (values not too high, number of values correct),and possible errors reported in which case the table will not be loaded.

  • Page 80: 3.10.13 Battery Test Function

    ELR 9000 Series 3.10.13 Battery test function The purpose of the battery test function is to discharge various battery types in industrial product tests or laboratory applications. It is only available via ac- cess on the HMI, at least as setup and use are described below, but can also be achieved in remote control using the arbitrary function generator.
  • Page 81 ELR 9000 Series 3.10.13.3 Other parameters These parameters are available in both battery test modes, but the values are separately adjustable in each. Parameter Range Description Discharge voltage 0...Nominal value of U Variable voltage threshold to make the test stop when reached (is...

  • Page 82: 3.10.14 Mpp Tracking Function

    ELR 9000 Series 3.10.13.6 Possible reasons for battery test stop The battery test function run can be stopped by different reasons: • Manual stop on the HMI with button STOP • After the max. test time has been reached and action “End of test” was set for it • After the max.
  • Page 83 ELR 9000 Series 3.10.14.2 Mode MPP2 This mode tracks the MPP, so it is closest to the operation of a solar inverter. Once the MPP is found, the function won’t stop, but try to track the MPP permanently. Due to the nature of solar panels this can only be done below the level of the MPP.
  • Page 84 ELR 9000 Series 3.10.14.5 Load curve data from USB stick for mode MPP4 Alternatively to manual adjustment of the 1-100 available curve points, which can be quite time-consuming, the curve point data (only one voltage value per point) can be loaded from USB stick in form of a CSV file. See sec- tion 1.9.6.5 for the naming convention.

  • Page 85: 3.10.15 Remote Control Of The Function Generator

    ELR 9000 Series 3.10.15 Remote control of the function generator The function generator can be remotely controlled but configuration and control of the functions with individual commands is different from manual operation. The external documentation “Programming Guide ModBus & SCPI”...

  • Page 86: Other Applications

    ELR 9000 Series 3.11 Other applications 3.11.1 Parallel operation in master-slave (MS) Multiple devices of same kind and model can be connected in parallel in order to create a system with higher total current and hence higher power. For true master-slave operation, the units have to be connected with their DC inputs, their master-slave bus and their Share bus.
  • Page 87 ELR 9000 Series 3.11.1.4 Wiring and set-up of the master-slave bus The master-slave connectors are built-in and must first be connected via network cables (≥CAT3, patch cable) and then MS can be configured manually (recommended) or by remote control. The following applies: • A maximum 16 units can be connected via the bus: 1 master and up to 15 slaves.
  • Page 88 ELR 9000 Series ► Step 3: Initialising the master The master unit and the whole master-slave system still need to be initialised. In the main screen of the master unit, after quitting the setting menus, a pop-up will appear presenting the result of the first init run: Tapping INITIALIZE can be used to repeat the search again, in case the detected number of slaves is less than expected.

  • Page 89: Series Connection

    ELR 9000 Series 3.11.1.6 Alarms and other problem situations Master-slave operation, due to the connection of multiple units and their interaction, can cause additional problem situations which do not occur when operating individual units. For such occurrences the following regulations have been defined: • Generally, if the master loses connection to any slave, it will generate an MSP (master-slave protection) alarm,...

  • Page 90: Two Quadrants Operation (2Qo)

    (see section „1.9.10. Share connector“) and a sink, in this case a series ELR 9000 electronic load. The source and the sink function alternately in order to test a device, such as a battery, by deliberate charging and discharging as part of a functional test, or a motor by clipping excess en- ergy with the sink.
  • Page 91 ELR 9000 Series 3.11.3.3 Settings on the devices The master-slave settings in the MENU also affect the Share bus. For correct 2QO operation, all involved load units must be slaves on the Share bus. This is achieved by setting the master-slave mode to OFF or SLAVE, de- pending on if there is digital master-slave in use or not.

  • Page 92: Service And Maintenance

    Contact the supplier in case of suspicion and elicit the steps to be taken. It will then usually be necessary to return the device to Elektro-Automatik (with or without warranty). If a return for checking or repair is to be carried out, ensure that: • the supplier has been contacted and it is clarified how and where the device should be sent.

  • Page 93: Calibration

    4.3.1 Preface The devices of series ELR 9000 feature a function to re-adjust the most important DC input values elated values, which can help in case these have moved out of tolerance. The re-adjustment is limited to compensate small differ- ences of up to 1% or 2% of the max.
  • Page 94 ELR 9000 Series 4.3.3.1 Calibrating the set values ► How to calibrate the input voltage Adjust the connected voltage source to approx. 102% of the maximum voltage specified for the ELR device. For the example with an 80 V ELR this would be 81.6 V for the source.

  • Page 95: Contact And Support

    Contact and support Repairs Repairs, if not otherwise arranged between supplier and customer, will be carried out by EA Elektro-Automatik. For this the device must generally be returned to the manufacturer. No RMA number is needed. It is sufficient to package the device 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.
  • Page 96 ELR 9000 Series EA Elektro-Automatik GmbH Fon: +49 2162 / 3785-0 www.elektroautomatik.de Page 96 Helmholtzstr. 31-37 • 41747 Viersen Fax: +49 2162 / 16230 ea1974@elektroautomatik.de Germany...
  • Page 98 EA-Elektro-Automatik GmbH & Co. KG Development - Production - Sales Helmholtzstraße 31-37 41747 Viersen Germany Fon: +49 2162 / 37 85-0 Mail: ea1974@elektroautomatik.de Web: www.elektroautomatik.de...

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