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EPS PSI 9000 2U Series Operating Manual

Dc laboratory power supply
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Operating Guide
PSI 9000 2U
DC Laboratory Power Supply
Attention! This document is only
valid for devices with firmware
"KE: 2.09" and "HMI: 2.01" and
"DR: 1.6.3" or higher. For avail-
ability of updates for your device
check our website or contact us.
Doc ID: PSI92UTEN
Revision: 01
Date: 01/2015

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Summary of Contents for EPS PSI 9000 2U Series

  • Page 1 Operating Guide PSI 9000 2U DC Laboratory Power Supply Attention! This document is only valid for devices with firmware “KE: 2.09” and “HMI: 2.01” and Doc ID: PSI92UTEN “DR: 1.6.3” or higher. For avail- ability of updates for your device Revision: 01 check our website or contact us.

  • Page 3: Table Of Contents

    PSI 9000 2U Series TABLE OF CONTENTS GENERAL About this document ........5 2.3.8 Installation of an AnyBus interface module .38 1.1.1 Retention and use ..........5 2.3.9 Connecting the analog interface ....38 1.1.2 Copyright ............5 2.3.10 Connecting the “Share” bus ......39 1.1.3...
  • Page 4 PSI 9000 2U Series 3.9.10 Arbitrary function ..........67 3.9.11 Ramp Function ..........71 3.9.12 UI and IU table functions (XY table) ....71 3.9.13 PV table function (photovoltaics) ....73 3.9.14 FC table function (fuel cell) ......74 3.9.15 Remote control of the function generator..76 3.10...

  • Page 5: General

    EPS Stromversorgung guarantees the functional competence of the applied technology and the stated performance parameters. The warranty period begins with the delivery of free from defects equipment. Terms of guarantee are included in the general terms and conditions (TOS) of EPS Stromversorgung. Limitation 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.

  • Page 6: Disposal Of Equipment

    PSI 9000 2U Series Disposal of equipment 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 an- other, delegated person is conducting the disposal.

  • Page 7: Safety

    PSI 9000 2U Series Safety 1.7.1 Safety notices Mortal danger - Hazardous voltage • Electrical equipment operation means that some parts can be under dangerous voltage. Therefore all parts under voltage must be covered! This basically applies to all models, though 40 V models according to SELV can not generate hazardous DC voltage.

  • Page 8: Responsibility Of The Operator

    PSI 9000 2U 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

    PSI 9000 2U Series 1.7.5 Alarm signals The equipment offers various possibilities for signalling alarm conditions, however, not for danger situations. The signals 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

    PSI 9000 2U Series 1.8.3 Specific technical data Model 2U 1000 W PSI 9040-40 PSI 9080-40 PSI 9200-15 AC Input Input voltage 90...264 V AC 90...264 V AC 90...264 V AC Input connection 1ph,N,PE 1ph,N,PE 1ph,N,PE Input frequency 50/60 Hz...
  • Page 11 PSI 9000 2U Series Model 2U 1000 W PSI 9040-40 PSI 9080-40 PSI 9200-15 Internal resistance regulation Adjustment range 0...30 Ω 0...60 Ω 0...400 Ω Accuracy ≤ 2% of max. resistance ± 0.3% of maximum current Display: Resolution See section „1.9.6.4. Resolution of the displayed values“...
  • Page 12 PSI 9000 2U Series Model 2U 1000 W PSI 9360-10 PSI 9500-06 PSI 9750-04 AC Input Input voltage 90...264 V AC 90...264 V AC 90...264 V AC Input connection 1ph,N,PE 1ph,N,PE 1ph,N,PE Input frequency 50/60 Hz 50/60 Hz 50/60 Hz...
  • Page 13 PSI 9000 2U Series Model 2U 1000 W PSI 9360-10 PSI 9500-06 PSI 9750-04 Internal resistance regulation Adjustment range 0...1080 Ω 0...2500 Ω 0...5625 Ω Accuracy ≤ 2% of max. resistance ± 0.3% of maximum current Display: Resolution See section „1.9.6.4. Resolution of the displayed values“...
  • Page 14 PSI 9000 2U Series Model 2U 1500 W PSI 9040-60 PSI 9080-60 PSI 9200-25 AC Input Input voltage 90...264 V AC 90...264 V AC 90...264 V AC - with additional derating 90...150 V AC 90...150 V AC 90...150 V AC...
  • Page 15 PSI 9000 2U Series Model 2U 1500 W PSI 9040-60 PSI 9080-60 PSI 9200-25 Internal resistance regulation Adjustment range 0...20 Ω 0...40 Ω 0...240 Ω Accuracy ≤ 2% of max. resistance ± 0.3% of maximum current Display: Resolution See section „1.9.6.4. Resolution of the displayed values“...
  • Page 16 PSI 9000 2U Series Model 2U 1500 W PSI 9360-15 PSI 9500-10 PSI 9750-06 AC Input Input voltage 90...264 V AC 90...264 V AC 90...264 V AC - with additional derating 90...150 V AC 90...150 V AC 90...150 V AC...
  • Page 17 PSI 9000 2U Series Model 2U 1500 W PSI 9360-15 PSI 9500-10 PSI 9750-06 Internal resistance regulation Adjustment range 0...720 Ω 0...1500 Ω 0...3750 Ω Accuracy ≤ 2% of max. resistance ± 0.3% of maximum current Display: Resolution See section „1.9.6.4. Resolution of the displayed values“...
  • Page 18 PSI 9000 2U Series Model 2U 3000 W PSI 9040-120 PSI 9080-120 PSI 9200-50 AC Input Input voltage 180...264 V AC 180...264 V AC 180...264 V AC - with additional derating 180...207 V AC 180...207 V AC 180...207 V AC...
  • Page 19 PSI 9000 2U Series Model 2U 3000 W PSI 9040-120 PSI 9080-120 PSI 9200-50 Internal resistance regulation Adjustment range 0...10 Ω 0...20 Ω 0...120 Ω Accuracy ≤ 2% of max. resistance ± 0.3% of maximum current Display: Resolution See section „1.9.6.4. Resolution of the displayed values“...
  • Page 20 PSI 9000 2U Series Model 2U 3000 W PSI 9360-30 PSI 9500-20 PSI 9750-12 AC Input Input voltage 180...264 V AC 180...264 V AC 180...264 V AC - with additional derating 180...207 V AC 180...207 V AC 180...207 V AC...
  • Page 21 PSI 9000 2U Series Model 2U 3000 W PSI 9360-30 PSI 9500-20 PSI 9750-12 Internal resistance regulation Adjustment range 0...360 Ω 0...750 Ω 0...1875 Ω Accuracy ≤ 2% of max. resistance ± 0.3% of maximum current Display: Resolution See section „1.9.6.4. Resolution of the displayed values“...

  • Page 22: Views

    PSI 9000 2U Series 1.8.4 Views Figure 1 - Front side Figure 2 - Rear side (standard version) EPS Stromversorgung GmbH Fon: +49 821 / 570451-0 www.eps-germany.de Page 22 Alter Postweg 101 • 86159 Augsburg Fax: +49 821 / 570451-25 info@eps-germany.de...
  • Page 23 PSI 9000 2U Series EPS Stromversorgung GmbH Fon: +49 821 / 570451-0 www.eps-germany.de Page 23 Alter Postweg 101 • 86159 Augsburg Fax: +49 821 / 570451-25 info@eps-germany.de Germany...
  • Page 24 PSI 9000 2U Series Figure 5 - View from above, with DC cover (terminal type 1) EPS Stromversorgung GmbH Fon: +49 821 / 570451-0 www.eps-germany.de Page 24 Alter Postweg 101 • 86159 Augsburg Fax: +49 821 / 570451-25 info@eps-germany.de Germany...
  • Page 25 PSI 9000 2U Series Figure 6 - Control Panel Overview of the elements of the operating panel For a detailed description see section „1.9.6. The control panel (HMI)“. Touchscreen display Used for selection of set values, menus, conditions and display of actual values and status.

  • Page 26: Construction And Function

    1.9.1 General description The electronic high performance power supplies of the PSI 9000 2U series are especially suitable for test systems and industrial controls due to their compact construction in a 19” enclosure with 2 height units (2U). Apart from basic functions of power supplies, set point curves can be produced in the integrated function generator (sine, rectangular, triangular and other curve types).

  • Page 27: Scope Of Delivery

    PSI 9000 2U Series 1.9.3 Scope of delivery 1 x Power supply device PSI 9000 2U 1 x Mains cord, 2 m, Euro plug (Schuko) and/or UK plug (depending on shipping destination) 1 x Printed operating guide 1 x Share Bus plug (separately or plugged) 1 x Remote sensing plug (separately or plugged) 1 x USB cable, 1.8 m...

  • Page 28: The Control Panel (Hmi)

    PSI 9000 2U Series 1.9.6 The control panel (HMI) The HMI (Human Machine Interface) consists of a display with touchscreen, two rotary knobs, a pushbutton and a USB-A 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 equipment.
  • Page 29 PSI 9000 2U 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 PSI 9000 2U Series 1.9.6.4 Resolution of the displayed values In the display, set values can be adjusted in variable increments. The number of decimal places depends on the device model and can have 3 or 5 digits. Related actual and set values always have the same number of digits.

  • Page 31: Usb Port (Rear Side)

    PSI 9000 2U Series 1.9.7 USB port (rear side) The USB-B port on the back side of the device is provided for communication with the device and for firmware updates. The included USB cable can be used to connect the device to a PC (USB 2.0 or 3.0). The driver is delivered on the included CD and installs a virtual COM port.

  • Page 32: Share Bus-Connection

    PSI 9000 2U Series 1.9.10 Share Bus-Connection The 2 pole WAGO socket (“Share”) on the back side of the device is provided for connection to equally named sockets on compatible power supplies series to achieve a balanced load current distribution during parallel connection. The socket is also used to connect the power supply to compatible electronic loads, in order to build a two-quadrants operation setup.

  • Page 33: Installation & Commissioning

    PSI 9000 2U Series Installation & commissioning Transport and storage 2.1.1 Transport • The handles on the front side of the device are not for carrying! • Because of its weight, transport by hand should be avoided where possible. If unavoidable then only the housing should be held and not on the exterior parts (handles, DC output terminal, rotary knobs).

  • Page 34: Preparation

    Preparation Mains connection for a PSI 9000 2U series device is done via the included 2 meters long 3 pole mains cord. In case a different AC wiring is required, make sure that the other cable has at least a cross section of 2.5 mm² (AWG 12) is used.

  • Page 35: Connection To Ac Supply

    PSI 9000 2U Series 2.3.4 Connection to AC supply • The device can be connected to any wall socket or multi-socket outlet, as long as those feature a safety contact (PE) and are capable for 16 A. • When connecting the device to a multi-socket outlet, along with other electric devices, it is important to consider the total power consumption of all devices on the outlet, so that the maximum current (power ÷...

  • Page 36: Grounding Of The Dc Output

    PSI 9000 2U Series 2.3.5.2 Cable lead and plastic cover A plastic cover for contact protection is included for the DC terminal. It should always be installed. The cover for type 2 (see picture above) is fixed to the connector itself, for type 1 to the back of the device. Furthermore the cover for type 1 has break outs so that the supply cable can be laid in various directions.

  • Page 37: Connection Of Remote Sensing

    PSI 9000 2U Series 2.3.7 Connection of remote sensing Both pins „NC“ of the Sense connector must not be wired! • The cross section of the sense cables is noncritical. However, it should be increased with increasing cable length. Recommendation: for cables up to 5 m use at least 0.5 mm²...

  • Page 38: Installation Of An Anybus Interface Module

    PSI 9000 2U Series 2.3.8 Installation of an AnyBus interface module The various interface modules, which are available for PSI 9000 2U standard version models with Anybus slot, can be retrofitted by the user and are exchangeable with other modules. 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 39: Connecting The "Share" Bus

    PSI 9000 2U Series 2.3.10 Connecting the “Share” bus The “Share” bus connector on the back side is intended to balance the current of multiple units in parallel opera- tion, especially when using the integrated function generator of the master unit. It is recommended to connect the Share bus of any unit involved in parallel operation.

  • Page 40: Operation And Application

    PSI 9000 2U 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 can generate a voltage which is dangerous by contact, or is connected to...

  • Page 41: Power Regulation / Constant Power / Power Limiting

    PSI 9000 2U Series 3.2.3 Power regulation / constant power / power limiting Power regulation, also known as power limiting or constant power (CP), keeps the DC output power of a power supply constant if the current flowing to the load in relation to the output voltage and the resistance of load reaches the adjusted value according to P = U * I resp.

  • Page 42: Alarm Conditions

    PSI 9000 2U 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 43: Manual Operation

    PSI 9000 2U Series Manual operation 3.4.1 Switching on the device The device should, as far as possible, always be switched on using the toggle switch on the front of the device. Alternatively this can take place using an external cutout (contactor, circuit breaker) of suitable current capacity.
  • Page 44 PSI 9000 2U Series EPS Stromversorgung GmbH Fon: +49 821 / 570451-0 www.eps-germany.de Page 44 Alter Postweg 101 • 86159 Augsburg Fax: +49 821 / 570451-25 info@eps-germany.de Germany...
  • Page 45 PSI 9000 2U Series EPS Stromversorgung GmbH Fon: +49 821 / 570451-0 www.eps-germany.de Page 45 Alter Postweg 101 • 86159 Augsburg Fax: +49 821 / 570451-25 info@eps-germany.de Germany...
  • Page 46 PSI 9000 2U Series EPS Stromversorgung GmbH Fon: +49 821 / 570451-0 www.eps-germany.de Page 46 Alter Postweg 101 • 86159 Augsburg Fax: +49 821 / 570451-25 info@eps-germany.de Germany...
  • Page 47 PSI 9000 2U 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 48 PSI 9000 2U Series 3.4.3.2 Menu “User Events” See „3.6.2.1 User defined events“ on page 60. 3.4.3.3 Menu “Profiles” See „3.8 Loading and saving a user profile“ on page 61. 3.4.3.4 Menu “Overview” This menu page displays an overview of the set values (U, I, P or U, I, P, R) and alarm settings as well as settings limits.
  • Page 49 PSI 9000 2U 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 50 PSI 9000 2U Series IF Level 1 Level 2 Description Node Address Selection of the CANopen node address in the range 1...127 via direct input Baud Rate AUTO Automatic detection of the bus baud rate.(speed) Automatically sets baud rate and node address Manual Manual selection of the baud rate that is used by the CANopen interface.

  • Page 51: Adjustment Limits (Limits)

    PSI 9000 2U Series 3.4.4 Adjustment limits (Limits) Adjustment limits are only effective on the related set values, no matter if using manual adjustment or remote control setting! Defaults are that all set values (U, I, P, R) are adjustable from 0 to 100%.

  • Page 52: Manual Adjustment Of Set Values

    PSI 9000 2U Series 3.4.6 Manual adjustment of set values The set values for voltage, current and power are the fundamental operating possibilities of a power supply and hence the two rotary knobs on the front of the device are always assigned to two of the the values in manual op- eration.

  • Page 53: Switching The Dc Output On Or Off

    PSI 9000 2U Series 3.4.7 Switching the DC output on or off The DC output of the device can be manually or remotely switched on and off. This can be restricted in manual operation by the control panel being locked.

  • Page 54: Remote Control

    Remote control is possible via the built-in analog or USB port or via one of the optional interface modules (Any- Bus CompactCom, only with standard models of PSI 9000 2U series) or via the GPIB port (only with option 3W installed).

  • Page 55: Remote Control Via The Analog Interface (Ai)

    PSI 9000 2U Series 3.5.3.2 General With the standard models of series PSI 9000 3U, 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 analog interface.
  • Page 56 PSI 9000 2U Series 3.5.4.2 Acknowledging device alarms Device alarms (see 3.6.2) are always indicated in the front display and some of them are also reported as signal on the analog interface socket (see 3.5.4.3), for example the overvoltage alarm (OV), which is considered as critical.
  • Page 57 PSI 9000 2U Series 3.5.4.5 Simplified diagram of the pins Digital Input (DI) Analog Input (AI) V~0.5 It requires to use a switch with low resist- High resistance input (impedance ance (relay, switch, circuit breaker etc.) in >40 k ..100 kΩ) for an OA circuit.
  • Page 58 PSI 9000 2U Series In case the DC output is already switched on, toggling the pin will switch the DC output off, similar to what it does in analog remote control: Parameter  Behaviour  output „REM-SB“ „Rem-SB“ DC output remains on, nothing is locked. It can be switched on...

  • Page 59: Alarms And Monitoring

    PSI 9000 2U 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 or overheating protection, and user defined events such as OVD (overvoltage detection). Whilst device alarms serve to protect the device and the connected load by initially switching off the DC output, user defined events can switch off the DC output (Action = ALARM), but can also simply give an acoustic signal to make the user aware.
  • Page 60 PSI 9000 2U Series ► How to configure the device alarms Tap the touch area on the main screen. On the right side tap the white arrow to select “2. Protect”. Set the limits for the equipment alarm relevant to your application if the default value of 110% is unsuitable.

  • Page 61: Control Panel (Hmi) Lock

    PSI 9000 2U 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 62: The Function Generator

    PSI 9000 2U Series The function generator 3.9.1 Introduction The built-in function generator is able to create various signal forms and apply these to set values for voltage or current. In manual operation, all generator functions are available for access on the front panel. In remote control, only the customisable arbitrary generator and a XY function are available.

  • Page 63: Manual Operation

    PSI 9000 2U Series 3.9.4 Manual operation 3.9.4.1 Function selection and control Via the touchscreen one of the functions described above can be called up, configured and controlled. Selection and configuration are only possible when the output is switched off.

  • Page 64: Sine Wave Function

    PSI 9000 2U Series ► How to start and stop a function The function can be started either by tapping or pushing the “On/Off” button, if the DC output is currently switched off. The function then starts immediately. In case START is used while the DC output is still switched off, the DC output will be switched on automatically.

  • Page 65: Rectangular Function

    PSI 9000 2U Series Schematic diagram: Application and result: A triangular wave signal for output current (only effective in current limiting) or output voltage is generated. The positive and negative slope times can be set indepen- dently. The offset shifts the signal on the Y-axis.

  • Page 66: Trapezoidal Function

    PSI 9000 2U Series 3.9.8 Trapezoidal function The following parameters can be configured for a trapezoidal curve function: Value Range Description I(A), U(A) 0...(Nominal value - (Off)) of U, I A = Amplitude of the signal to be generated I(Off), U(Off) 0...(Nominal value - (A)) of U, I...

  • Page 67: Arbitrary Function

    PSI 9000 2U Series 3.9.10 Arbitrary function The arbitrary (freely definable) function offers the user further scope. Up to 100 sequences are available for use for current I and voltage U, all of which have the same parameters but which can be differently configured so that a complex function process can be built up.
  • Page 68 PSI 9000 2U Series Schematic diagram: Applications and results: Example 2 Focussing 1 cycle of 1 sequence from 100: 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 69 PSI 9000 2U 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 70 PSI 9000 2U Series 3.9.10.1 Loading and saving the arbitrary function The 100 sequences 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 flash drive via the front side USB port.

  • Page 71: Ramp Function

    PSI 9000 2U Series ► How to save a sequence table (100 sequences) to a USB flash drive: Do not plug the USB flash drive yet or remove it. Access the function selection menu of the function generator via MENU -> Function Generator -> Arbitrary...
  • Page 72 PSI 9000 2U Series In the IU function the assignment of the values is the other way round, the behaviour, however, the same. Thus the behaviour of the load or the current and power consumption can be controlled with dependance on output voltage and step changes can be created.

  • Page 73: Pv Table Function (Photovoltaics)

    PSI 9000 2U Series 3.9.13 PV table function (photovoltaics) 3.9.13.1 Preface This function uses the standard XY generator to make the power supply simulate solar panels or solar cells with certain characteristics. The device calculates an IU table from four typical values.

  • Page 74: Fc Table Function (Fuel Cell)

    PSI 9000 2U Series Varying this parameter shifts the MPP and the PV curve along the Y axis. Also see diagram to the right. The value Irradiance is here used as a factor for the current Impp. The curve itself is not permanently re-calculated.
  • Page 75 PSI 9000 2U Series 3.9.14.2 Usage The following parameters can be set for the FC table function: Value Range Description Point 1: Uoc 0 V...U Open circuit voltage at no load Point 2+3: U 0 V...U Voltage and current define the position of these two points...

  • Page 76: Remote Control Of The Function Generator

    PSI 9000 2U Series 3.9.15 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 77: Other Applications

    PSI 9000 2U Series 3.10 Other applications 3.10.1 Parallel operation in master-slave mode (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 master-slave operation, the units are usually connected with their DC outputs, their Share bus and their digital master-slave bus.
  • Page 78 PSI 9000 2U Series ► How to connect the master-slave bus: Switch off all units that are to be connected and connect them together with network cables (CAT3 or bet- ter, not included). It doesn’t matter which of the two master-slave connection sockets (RJ45, backside) is connected to the next unit.
  • Page 79 PSI 9000 2U Series 3.10.1.4 Operating the master-slave system After successful configuration and initialisation of the master and slave units, these will show their status in the displays. While the master merely shows “Master” in the status area, the slave(s) will continuously show like this, as long they are in remote control by the master: It means, aslong as a slave unit is in control by the master, it won’t display any...

  • Page 80: Series Connection

    PSI 9000 2U Series 3.10.2 Series connection Series connection of two or multiple devices is basically possible. But for reasons of safety and isolation, some restrictions apply: • Both, negative (DC-) and positive (DC+) output poles, are coupled to PE via type X capacitors, limiting the max.

  • Page 81: Two Quadrant Operation (2Qo)

    PSI 9000 2U Series 3.10.3 Two quadrant operation (2QO) 3.10.3.1 Introduction This way of operating refers to the use of a source, in this case a power supply of this series PSI 9000 2U, and a sink, for example a series ELR 9000 electronic load.
  • Page 82 PSI 9000 2U Series Configuration C: E-LOAD n PSU n Multiple e-loads and Multiple power supplies, plus 1 test object (E.U.T), for raising the total performance. The combination of load units and power supply units each create a block, a system with certain power. Here it is also...

  • Page 83: Service And Maintenance

    PSI 9000 2U Series Service and maintenance Maintenance / cleaning The device needs no maintenance. Cleaning may be needed for the internal fans, the frequency of cleanse is depending on the ambient conditions. The fans serve to cool the components which are heated by the inherent power loss.

  • Page 84: Firmware Updates

    The firmware of the device, if necessary, is updated via the rear side USB port. For this a software, a so-called “update tool” is needed which is available from EPS Stromversorgung (as download from the website or upon request), together with the firmware update. The update tool guides the user through the update process.

  • Page 85: Calibration

    PSI 9000 2U Series Calibration 4.4.1 Preface The devices of series PSI 9000 feature a function to readjust the most important output values when doing a cali- bration and in case these values have moved out of tolerance. The readjustment is limited to compensate small differences of up to 1% or 2% of the max.
  • Page 86 PSI 9000 2U Series ► How to calibrate the voltage Connect a multimeter to the DC output. Connect a load and set its cur- rent to approx. 5% of the nominal current of the power supply, in this example ~6 A, and 0 V (if the load is electronic).

  • Page 87: Accessories And Options

    PSI 9000 2U Series Accessories and options Overview Accessories and options are, when necessary, delivered with their own documentation and are not detailed further in this document. Service & Support General 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.

This manual is also suitable for:

Psi 9080-40 2uPsi 9360-15 2uPsi 9750-12 2uPsi 9200-15 2uPsi 9500-10 2uPsi 9040-40 2u ... Show all

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