EPS PS 9080-50 1U, PS 9200-25 1U, PS 9500-10 1U, PS 9750-06 1U, PS 9080-100 1U Operating Manual
...Page 1
Operating Guide
PS 9000 1U
DC Laboratory Power Supply
Stromversorgung
Attention! This document is only
valid for devices with rmware
“KE: 2.07” and “HMI: 2.03”, or
higher. For availability of up-
EPS
dates for your device check our
website or contact us.
Doc ID: PS91UEN
Revision: 05
Date: 08/2016
Page 2
Page 3
TABLE OF CONTENTS
GENERAL
1
1.1 About this document ...................................... 5
1.1.1 Retention and use .......................................... 5
1.1.2 Copyright ........................................................5
1.1.3 Validity ............................................................5
1.1.4 Explanation of symbols .................................. 5
1.2 Warranty .........................................................5
1.3 Limitation of liability ........................................ 5
1.4 Disposal of equipment ...................................6
1.5 Product key ....................................................6
1.6 Intended usage ..............................................6
1.7 Safety .............................................................7
1.7.1 Safety notices ................................................. 7
1.7.2 Responsibility of the user...............................7
1.7.3 Responsibility of the operator ....................... 8
1.7.4 User requirements .........................................8
1.7.5 Alarm signals .................................................. 9
1.8 Technical data ................................................9
1.8.1 Approved operating conditions ...................... 9
1.8.2 General technical data ................................... 9
1.8.3 Specic technical data .................................10
1.8.4 Views ............................................................14
1.9 Construction and function ............................18
1.9.1 General description ......................................18
1.9.2 Block diagram ..............................................18
1.9.3 Scope of delivery .........................................18
1.9.4 The control panel (HMI) ...............................19
1.9.5 Share Bus-Connection ................................20
1.9.6 USB port .......................................................21
1.9.7 Ethernet port ................................................21
1.9.8 Analog interface ...........................................21
1.9.9 Sense connector (remote sensing) .............21
INSTALLATION & COMMISSIONING
2
2.1 Transport and storage .................................22
2.1.1 Transport ......................................................22
2.1.2 Packaging ....................................................22
2.1.3 Storage .........................................................22
2.2 Unpacking and visual check ........................22
2.3 Installation ....................................................22
2.3.1 Safety procedures before installation and
use ................................................................22
2.3.2 Preparation ...................................................22
2.3.3 Installing the device .....................................23
2.3.4 Connection to AC supply .............................23
2.3.5 Connection to DC loads ...............................24
2.3.6 Grounding of the DC output ........................25
2.3.7 Connection of remote sensing ....................25
2.3.8 Connecting the “Share” bus ........................25
2.3.9 Connecting the analog interface .................26
2.3.10 Connecting the USB port ............................. 26
2.3.11 Initial commission .........................................26
2.3.12 Initial network setup .....................................27
PS 9000 1U Series
2.3.13 Commission after a rmware update or a
long period of non-use .................................27
OPERATION AND APPLICATION
3
3.1 Important notes ............................................28
3.1.1 Personal safety ............................................28
3.1.2 General .........................................................28
3.2 Operating modes .........................................28
3.2.1 Voltage regulation / Constant voltage .........28
3.2.2 Current regulation / constant current / current
limiting ..........................................................28
3.2.3 Power regulation / constant power / power
limiting ..........................................................29
3.3 Alarm conditions ..........................................30
3.3.1 Power Fail ...................................................30
3.3.2 Overtemperature ..........................................30
3.3.3 Overvoltage ..................................................30
3.3.4 Overcurrent ..................................................30
3.3.5 Overpower ....................................................30
3.4 Manual operation .........................................31
3.4.1 Switching on the device ...............................31
3.4.2 Switching off the device ...............................31
3.4.3 Conguration in the setup menu .................31
3.4.4 Adjustment limits ..........................................35
3.4.5 Display modes for actual and set values ....36
3.4.6 Manual adjustment of set values .................36
3.4.7 The quick menu ...........................................37
3.4.8 Switching the DC output on or off ................37
3.5 Remote control .............................................38
3.5.1 General .........................................................38
3.5.2 Control locations ..........................................38
3.5.3 Remote control via a digital interface ..........38
3.5.4 Remote control via the analog interface
(AI) ................................................................39
3.6 Alarms and monitoring .................................43
3.6.1 Denition of terms ........................................43
3.6.2 Device alarm handling .................................43
3.7 Control panel (HMI) lock ..............................44
3.8 Loading and saving a user prole ...............45
3.9 Other applications ........................................46
3.9.1 Parallel operation in Share Bus mode ........46
3.9.2 Series connection ........................................47
3.9.3 Operation as battery charger .......................47
3.9.4 Two quadrants operation (2QO) ..................48
SERVICE & MAINTENANCE
4
4.1 Maintenance / cleaning ................................50
4.2 Fault nding / diagnosis / repair...................50
4.2.1 Replacing a defect mains fuse ....................50
4.2.2 Firmware update ..........................................50
EPS Stromversorgung GmbH
Alter Postweg 101 • 86159 Augsburg
Germany
Fon: +49 821 / 570451-0
Fax: +49 821 / 570451-25
www.eps-germany.de
info@eps-germany.de
Page 3
Page 4
PS 9000 1U Series
4.3 Calibration (readjustment) ...........................51
4.3.1 Preface .........................................................51
4.3.2 Preparation ...................................................51
4.3.3 Calibration procedure ..................................51
CONTACT AND SUPPORT
5
5.1 General .........................................................53
5.2 Contact options ............................................53
Page 4
EPS Stromversorgung GmbH
Alter Postweg 101 • 86159 Augsburg
Germany
Fon: +49 821 / 570451-0
Fax: +49 821 / 570451-25
www.eps-germany.de
info@eps-germany.de
Page 5
PS 9000 1U Series
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.
1.1.3 Validity
This manual is valid for the following equipment including derived variants.
Model Article nr. Model Article nr.
PS 9080-50 1U 06230400 PS 9080-100 1U 06230405
PS 9200-25 1U 06230401 PS 9200-50 1U 06230406
PS 9360-15 1U 06230402 PS 9360-30 1U 06230407
PS 9500-10 1U 06230403 PS 9500-20 1U 06230408
PS 9750-06 1U 06230404 PS 9750-12 1U 06230409
Changes and modications for special models will be listed in a separate document.
1.1.4 Explanation of symbols
Warning and safety notices as well as general notices in this document are shown in a box with a symbol as follows:
Symbol for a life threatening danger
Symbol for general safety notices (instructions and damage protection bans) or important information for operation
Symbol for general notices
1.2 Warranty
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.
1.3 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. The manufacturer accepts no liability for losses due to:
• Usage for purposes other than designed
• Use by untrained personnel
• Rebuilding by the customer
• Technical changes
• Use of not authorized spare parts
The actual delivered device(s) may differ from the explanations and diagrams given here due to latest technical
changes or due to customized models with the inclusion of additionally ordered options.
EPS Stromversorgung GmbH
Alter Postweg 101 • 86159 Augsburg
Germany
Fon: +49 821 / 570451-0
Fax: +49 821 / 570451-25
www.eps-germany.de
info@eps-germany.de
Page 5
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PS 9000 1U Series
1.4 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 another, delegated person is conducting the disposal. Our equipment falls under these regulations and is accordingly
marked with the following symbol:
1.5 Product key
Decoding of the product description on the label, using an example:
PS 9 080 - 50 1U zzz
Field for identication of installed options and/or special models
S01...S0x = Special models
Construction (not always given)
1U / 2U / 3U = 19" frame with 1 U, 2 U or 3 U
Maximum current of the device in Ampere
Maximum voltage of the device in Volt
Series : 8 = Series 8000 or 800, 9 = Series 9000
Type identication:
PS = Power Supply, usually programmable
PSI = Power Supply Intelligent, always programmable
ELR = Electronic Load with Recovery
Special models are always derived from standard models and can vary in output voltage and
current from those given.
1.6 Intended usage
The equipment is intended to be used, if a power supply or battery charger, only as a variable voltage and current
source, or, if an electronic load, only as a variable current sink.
Typical application for a power supply is DC supply to any relevant user, for a battery charger the charging of various battery types and for electronic loads the replacement of an ohmic resistor by an adjustable DC current sink
in order to load relevant voltage and current sources of any type.
• Claims of any sort due to damage caused by non-intended usage will not be accepted.
• All damage caused by non-intended usage is solely the responsibility of the operator.
Page 6
EPS Stromversorgung GmbH
Alter Postweg 101 • 86159 Augsburg
Germany
Fon: +49 821 / 570451-0
Fax: +49 821 / 570451-25
www.eps-germany.de
info@eps-germany.de
Page 7
1.7 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!
• All work on connections must be carried out under zero voltage (output not connected
to load) and may only be performed by qualied and informed persons. Improper actions can cause fatal injury as well as serious material damage!
• Never touch cables or connectors directly after unplugging from mains supply as the
danger of electric shock remains!
• Never touch the contacts on DC output terminal directly after switching off the DC
output, because there still can dangerous voltage present, sinking more or less slowly
depending on the load! There also can be dangerous potential between negative DC
output to PE or positive DC output to PE due to charged X capacitors.
• The equipment must only be used as intended
• The equipment is only approved for use within the connection limits stated on the product label.
• Do not insert any object, particularly metallic, through the ventilator slots
• Avoid any use of liquids near the equipment. Protect the device from wet, damp and conden-
sation.
• For power supplies and battery chargers: do not connect users, particularly low resistance, to
devices under power; sparking may occur which can cause burns as well as damage to the
equipment and to the user.
• For electronic loads: do not connect power sources to equipment under power, sparking may
occur which can cause burns as well as damage to the equipment and to the source.
• ESD regulations must be applied when plugging interface cards or modules into the relative slot
• Interface cards or modules may only be attached or removed after the device is switched off.
It is not necessary to open the device.
• Do not connect external power sources with reversed polarity to DC input or outputs! The
equipment will be damaged.
• For power supply devices: avoid where possible connecting external power sources to the
DC output, and never those that can generate a higher voltage than the nominal voltage of
the device.
• For electronic loads: do not connect a power source to the DC input which can generate a voltage more than 120% of the nominal input voltage of the load. The equipment is not protected
against over voltage and may be irreparably damaged.
• Never insert a network cable which is connected to Ethernet or its components into the masterslave socket on the back side of the device!
• Always congure the various protecting features against overvoltage overpower etc. for sensi-
tive loads to what the currently used application requires
PS 9000 1U Series
1.7.2 Responsibility of the user
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. In particular the users of the equipment:
• must be informed of the relevant job safety requirements
• must work to the dened responsibilities for operation, maintenance and cleaning of the equipment
• before starting work must have read and understood the operating manual
• must use the designated and recommended safety equipment.
Furthermore, anyone working with the equipment is responsible for ensuring that the device is at all times techni-
cally t for use.
EPS Stromversorgung GmbH
Alter Postweg 101 • 86159 Augsburg
Germany
Fon: +49 821 / 570451-0
Fax: +49 821 / 570451-25
www.eps-germany.de
info@eps-germany.de
Page 7
Page 8
PS 9000 1U 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.
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. In particular the operator has to
• be acquainted with the relevant job safety requirements
• identify other possible dangers arising from the specic usage conditions at the work station via a risk assessment
• introduce the necessary steps in the operating procedures for the local conditions
• regularly control that the operating procedures are current
• update the operating procedures where necessary to reect changes in regulation, standards or operating con-
ditions.
• dene clearly and unambiguously the responsibilities for operation, maintenance and cleaning of the equipment.
• ensure that all employees who use the equipment have read and understood the manual. Furthermore the users
are to be regularly schooled in working with the equipment and the possible dangers.
• provide all personnel who work with the equipment with the designated and recommended safety equipment
Furthermore, the operator is responsible for ensuring that the device is at all times technically t for use.
1.7.4 User requirements
Any activity with equipment of this type may only be performed by persons who are able to work correctly and
reliably and satisfy the requirements of the job.
• Persons whose reaction capability is negatively inuenced by e.g. drugs, alcohol or medication may not operate
the equipment.
• Age or job related regulations valid at the operating site must always be applied.
Danger for unqualied users
Improper operation can cause person or object damage. Only persons who have the necessary
training, knowledge and experience may use the equipment.
Delegated persons are those who have been properly and demonstrably instructed in their tasks and the attendant dangers.
Qualied persons are those who are able through training, knowledge and experience as well as knowledge of
the specic details to carry out all the required tasks, identify dangers and avoid personal and other risks.
Page 8
EPS Stromversorgung GmbH
Alter Postweg 101 • 86159 Augsburg
Germany
Fon: +49 821 / 570451-0
Fax: +49 821 / 570451-25
www.eps-germany.de
info@eps-germany.de
Page 9
PS 9000 1U 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). All alarms will cause the device to permanently or temporarily switch off the DC output.
The meaning of the signals is as follows:
Signal OT
(OverTemperature)
• Overheating of the device
• DC output will be switched off temporarily
• Non-critical
Signal OVP
(OverVoltage)
• Overvoltage shutdown of the DC output due to high voltage entering the device or generated by the device itself due to a defect or because the adjusted OVP threshold was
lower than the actual output voltage
• Critical! The device and/or the load could be damaged
Signal OCP
(OverCurrent)
Signal OPP
(OverPower)
Signal PF
(Power Fail)
• Shutdown of the DC output due to excess of the preset limit
• Non-critical, protects the load from excessive current consumption
• Shutdown of the DC output due to excess of the preset limit
• Non-critical, protects the load from excessive power consumption
• DC output shutdown due to AC undervoltage or defect of the AC input circuit
• Critical on overvoltage! AC input circuit could be damaged
1.8 Technical data
1.8.1 Approved operating conditions
• Use only inside dry buildings
• Ambient temperature 0-50°C
• Operational altitude: max. 2000 m above sea level
• Max 80% relative humidity, not condensing
1.8.2 General technical data
Display: Dot matrix, 240pt x 64pt
Controls: 2 rotary knobs with button function, 6 pushbuttons
The nominal values for the device determine the maximum adjustable ranges.
EPS Stromversorgung GmbH
Alter Postweg 101 • 86159 Augsburg
Germany
Fon: +49 821 / 570451-0
Fax: +49 821 / 570451-25
www.eps-germany.de
info@eps-germany.de
Page 9
Page 10
PS 9000 1U Series
1.8.3 Specic technical data
Model 1U
1500 W
AC Input
Input voltage / frequency
Input connection 1ph (L, N, PE)
Input fuse (internal) T16 A
Leak current < 3.5 mA
Power factor ~ 0.99
Idle mode power consumption ~ 70 W
DC Output
Max. output voltage U
Max. output current I
Max. output power P
Overvoltage protection range 0...88 V 0...220 V 0...396 V 0...550 V 0...825 V
Overcurrent protection range 0...55 A 0...27,5 A 0...17,6 A 0...11 A 0...6,6 A
Overpower protection range 0…1650 W 0…1650 W 0…1650 W 0…1650 W 0…1650 W
Temperature coefcient Voltage / current: 100 ppm/K
Output capacitance (approx.) 5640 μF 1000 μF 470 μF 105 μF 49 μF
Voltage regulation
Adjustment range 0...81.6 V 0...204 V 0...367.2 V 0...510 V 0...765 V
Accuracy
(1
(at 23 ± 5°C) < 0.1% U
Line regulation at ±10% ΔU
Load regulation at 0...100% load < 0.05% U
Rise time 10...90% ΔU Max. 15 ms Max. 15 ms Max. 15 ms Max. 15 ms Max. 15 ms
Transient time after load step < 1.7 ms < 1.4 ms < 2.2 ms < 2 ms < 2 ms
Display: Resolution See section „1.9.4.4. Resolution of the displayed values“
Display: Accuracy
(2
Ripple
Remote sensing compensation Max. 5% U
Fall time (at no load) after
switching DC output off
Current regulation
Adjustment range 0...51 A 0...25.5 A 0...15.3 A 0...10.2 A 0...6.12 A
Accuracy
(1
(at 23 ± 5°C) < 0.2% I
Line regulation at ±10% ΔU
Load regulation at 0...100% ΔU
(2
Ripple
Display: Resolution See section „1.9.4.4. Resolution of the displayed values“
Display: Accuracy
Power regulation
Adjustment range 0…1530 W 0…1530 W 0…1530 W 0…1530 W 0…1530 W
Accuracy
(1
(at 23 ± 5°C) < 1% P
Line regulation at ±10% ΔU
Load regulation at 10-90% ΔU*ΔI < 0.75% P
Display: Resolution See section „1.9.4.4. Resolution of the displayed values“
Efciency at 100% U
Efciency at 100% I
(1 Related to the nominal values, the accuracy denes the maximum deviation between an adjusted values and the true (actual) value.
Example: a 80 V model has min. 0.1% voltage accuracy, that is 80 mV. When adjusting the voltage to 5 V, the actual value is allowed to differ max. 80 mV, which
means it might be between 4.92 V and 5.08 V.
(2 RMS value: LF 0...300 kHz, PP value: HF 0...20MHz
(3 The display error adds to the error of the related actual value on the DC output
Max
Max
Max
(3
(3
DC
DC
PS 9080-50 PS 9200-25 PS 9360-15 PS 9500-10 PS 9750-06
Without derating: 150...264 V AC, 50/60 Hz
With derating to 1000 W: 100...150 V AC
80 V 200 V 360 V 500 V 750 V
50 A 25 A 15 A 10 A 6 A
1500 W 1500 W 1500 W 1500 W 1500 W
AC
Nenn
< 0.02% U
≤ 0.2% U
Nom
< 100 mVPP
< 5.2 mV
RMS
Nenn
Nenn
Nenn
< 0.1% U
Nenn
< 0.02% U
< 0.05% U
≤ 0.2% U
Nom
< 293 mVPP
< 51 mV
RMS
Max. 5% U
Down from 100% to <60 V: less than 10 s
Nom
Nom
< 0.2% I
Nom
< 0.05% I
< 0.15% I
< 29 mA
≤ 0.2% I
< 1% P
PP
Nom
Nom
< 0.05% P
< 0.75% P
Nom
Nom
AC
AC
< 0.05% I
< 0.15% I
OUT
< 75 mA
≤ 0.2% I
< 0.05% P
Nom
Nom
Nom
PP
Nom
Nom
~ 91% ~ 93% ~ 94% ~ 94% ~ 95%
~ 89% ~ 90% ~ 92% ~ 92% ~ 94%
Nenn
Nenn
Nenn
Nom
Nom
< 0.1% U
Nenn
< 0.02% U
< 0.05% U
≤ 0.2% U
Nom
< 195 mVPP
< 33 mV
RMS
Max. 5% U
< 0.2% I
< 0.05% I
< 0.15% I
< 10 mA
≤ 0.2% I
< 1% P
Nom
Nom
Nom
PP
Nom
Nom
< 0.05% P
< 0.75% P
Nenn
Nenn
Nenn
Nom
Nom
< 0.1% U
Nenn
< 0.02% U
< 0.05% U
≤ 0.2% U
Nom
< 293 mVPP
< 63 mV
RMS
Max. 5% U
< 0.2% I
< 0.05% I
< 0.15% I
< 9.2 mA
≤ 0.2% I
< 1% P
Nom
Nom
Nom
PP
Nom
Nom
< 0.05% P
< 0.75% P
Nenn
Nenn
Nenn
Nom
Nom
< 0.1% U
Nenn
< 0.02% U
< 0.05% U
≤ 0.2% U
Nom
< 260 mVPP
< 40 mV
RMS
Max. 5% U
< 0.2% I
< 0.05% I
< 0.15% I
< 4.1 mA
≤ 0.2% I
< 1% P
Nom
Nom
Nom
PP
Nom
Nom
< 0.05% P
< 0.75% P
Nenn
Nenn
Nenn
Nom
Nom
Page 10
EPS Stromversorgung GmbH
Alter Postweg 101 • 86159 Augsburg
Germany
Fon: +49 821 / 570451-0
Fax: +49 821 / 570451-25
www.eps-germany.de
info@eps-germany.de
Page 11
PS 9000 1U Series
Model 1U
1500 W
Analog interface
Type Sub-D, 15 pole, female
Set value inputs U, I, P
Actual value output U, I
Control signals DC on/off, Remote on/off
Status signals CV, OVP, OT
Galvanic isolation to the device Max. 1500 V DC
Sample rate of inputs & outputs 500 Hz
Insulation Allowed oat (potential shift) on the DC output:
Negative terminal to PE Max. ±400 V DC ±400 V DC ±400 V DC ±400 V DC ±400 V DC
Positive terminal to PE Max. ±480 V DC ±600 V DC ±760 V DC ±900 V DC ±1150 V DC
Miscellaneous
Cooling Temperature controlled fans, front inlet, rear exhaust
Ambient temperature 0..50°C
Storage temperature -20...70°C
Humidity < 80%, not condensing
Standards EN 61010, EN 61326
Overvoltage category 2
Protection class 1
Pollution degree 2
Operational altitude < 2000 m
Digital interfaces
Featured 1x USB-B, 1x Ethernet
Galvanic isolation from device Max. 1500 V DC
USB specication USB 2.0, socket type B, VCOM driver
USB response time SCPI: max. 5 ms, ModBus: max. 5 ms
Ethernet specication RJ45, 10/100Mbit, TCP/IP, ICMP, HTTP, DHCP
Ethernet response time SCPI: max. 7 ms, ModBus: 9-17 ms
Terminals
Rear side Share Bus, DC output, AC input, remote sensing, analog interface, USB-B, Ethernet
Dimensions
Enclosure (WxHxD) 19“ x 1U x 500 mm
Total (WxHxD) 483 x 44 x min. 565 mm
Weight ~ 10.5 kg ~ 10.5 kg ~ 10.5 kg ~ 10.5 kg ~ 10.5 kg
Article number 06230400 06230401 06230402 06230403 06230404
(1
PS 9080-50 PS 9200-25 PS 9360-15 PS 9500-10 PS 9750-06
(1 For technical specications of the analog interface see „3.5.4.4 Analog interface specication“ on page 40
EPS Stromversorgung GmbH
Alter Postweg 101 • 86159 Augsburg
Germany
Fon: +49 821 / 570451-0
Fax: +49 821 / 570451-25
www.eps-germany.de
info@eps-germany.de
Page 11
Page 12
PS 9000 1U Series
Model 1U
3000 W
AC Input
Input voltage / frequency
Input connection 1ph (L, N, PE)
Input fuse (internal) T16 A
Leak current < 3.5 mA
Power factor ~ 0.99
Idle mode power consumption ~ 70 W
DC Output
Max. output voltage U
Max. output current I
Max. output power P
Overvoltage protection range 0...88 V 0...220 V 0...396 V 0...550 V 0...825 V
Overcurrent protection range 0...110 A 0...55 A 0...33 A 0...22 A 0...13,2 A
Overpower protection range 0…3300 W 0…3300 W 0…3300 W 0…3300 W 0…3300 W
Temperature coefcient Voltage / current: 100 ppm/K
Output capacitance (approx.) 8930 μF 1500 μF 705 μF 150 μF 70 μF
Voltage regulation
Adjustment range 0...81.6 V 0...204 V 0...367.2 V 0...510 V 0...765 V
Accuracy
(1
(at 23 ± 5°C) < 0.1% U
Line regulation at ±10% ΔU
Load regulation at 0...100% load < 0.05% U
Rise time 10...90% ΔU Max. 15 ms Max. 15 ms Max. 15 ms Max. 15 ms Max. 15 ms
Transient time after load step < 1.7 ms < 1.4 ms < 2.2 ms < 2 ms < 2 ms
Display: Resolution See section „1.9.4.4. Resolution of the displayed values“
Display: Accuracy
(2
Ripple
Remote sensing compensation Max. 5% U
Fall time (at no load) after
switching DC output off
Current regulation
Adjustment range 0...102 A 0...51 A 0...30.6 A 0...20.4 A 0...12.24 A
Accuracy
(1
(at 23 ± 5°C) < 0.2% I
Line regulation at ±10% ΔU
Load regulation at 0...100% ΔU
(2
Ripple
Display: Resolution See section „1.9.4.4. Resolution of the displayed values“
Display: Accuracy
Power regulation
Adjustment range 0...3060 W 0...3060 W 0...3060 W 0...3060 W 0...3060 W
Accuracy
(1
(at 23 ± 5°C) < 1% P
Line regulation at ±10% ΔU
Load regulation at 10-90% ΔU*ΔI < 0.75% P
Display: Resolution See section „1.9.4.4. Resolution of the displayed values“
Efciency at 100% U
Efciency at 100% I
Max
Max
Max
(3
(3
DC
DC
PS 9080-100 PS 9200-50 PS 9360-30 PS 9500-20 PS 9750-12
Without derating: 207...264 V AC, 45...66 Hz
With derating to 2500 W: 180...207 V AC
80 V 200 V 360 V 500 V 750 V
100 A 50 A 30 A 20 A 12 A
3000 W 3000 W 3000 W 3000 W 3000 W
AC
< 0.02% U
≤ 0.2% U
< 76 mVPP
< 4.2 mV
Nenn
Nom
RMS
Nenn
Nenn
Nom
< 0.1% U
Nenn
< 0.02% U
< 0.05% U
≤ 0.2% U
Nom
< 234 mVPP
< 40 mV
RMS
Max. 5% U
Down from 100% to <60 V: less than 10 s
Nenn
Nenn
< 0.2% I
Nenn
< 0.05% I
< 0.15% I
< 29 mA
≤ 0.2% I
< 1% P
PP
Nom
Nenn
< 0.05% P
< 0.75% P
Nenn
Nenn
AC
AC
< 0.05% I
< 0.15% I
OUT
< 114 mA
≤ 0.2% I
< 0.05% P
Nenn
Nenn
Nenn
PP
Nom
Nenn
~ 91% ~ 93% ~ 94% ~ 94% ~ 95%
~ 89% ~ 90% ~ 92% ~ 92% ~ 94%
Nenn
Nenn
Nom
Nenn
Nenn
< 0.1% U
Nenn
< 0.02% U
< 0.05% U
≤ 0.2% U
Nom
< 156 mVPP
< 26 mV
RMS
Max. 5% U
< 0.2% I
< 0.05% I
< 0.15% I
< 10 mA
≤ 0.2% I
< 1% P
Nenn
Nenn
Nenn
PP
Nom
Nenn
< 0.05% P
< 0.75% P
Nenn
Nenn
Nom
Nenn
Nenn
< 0.1% U
Nenn
< 0.02% U
< 0.05% U
< 234 mVPP
< 50 mV
RMS
Max. 5% U
< 0.2% I
< 0.05% I
< 0.15% I
< 9.2 mA
≤ 0.2% I
< 1% P
Nenn
Nenn
Nenn
PP
Nom
Nenn
< 0.05% P
< 0.75% P
Nenn
Nenn
Nom
Nenn
Nenn
< 0.1% U
< 0.02% U
< 0.05% U
< 260 mVPP
< 40 mV
Max. 5% U
< 0.2% I
< 0.05% I
< 0.15% I
< 4.1 mA
≤ 0.2% I
< 1% P
< 0.05% P
< 0.75% P
Nenn
Nenn
Nenn
RMS
Nom
Nenn
Nenn
Nenn
PP
Nom
Nenn
Nenn
Nenn
(1 Related to the nominal values, the accuracy denes the maximum deviation between an adjusted values and the true (actual) value.
Example: a 80 V model has min. 0.1% voltage accuracy, that is 80 mV. When adjusting the voltage to 5 V, the actual value is allowed to differ max. 80 mV, which
means it might be between 4.92 V and 5.08 V.
(2 RMS value: LF 0...300 kHz, PP value: HF 0...20MHz
(3 The display error adds to the error of the related actual value on the DC output
Page 12
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Page 13
PS 9000 1U Series
Model 1U
3000 W
Analog interface
Type Sub-D, 15 pole, female
Set value inputs U, I, P
Actual value output U, I
Control signals DC on/off, Remote on/off
Status signals CV, OVP, OT
Galvanic isolation to the device Max. 1500 V DC
Sample rate of inputs & outputs 500 Hz
Insulation Allowed oat (potential shift) on the DC output:
Negative terminal to PE Max. ±400 V DC ±400 V DC ±400 V DC ±400 V DC ±400 V DC
Positive terminal to PE Max. ±480 V DC ±600 V DC ±760 V DC ±900 V DC ±1150 V DC
Miscellaneous
Cooling Temperature controlled fans, front inlet, rear exhaust
Ambient temperature 0..50°C
Storage temperature -20...70°C
Humidity < 80%, not condensing
Standards EN 61010, EN 61326
Overvoltage category 2
Protection class 1
Pollution degree 2
Operational altitude < 2000 m
Digital interfaces
Featured 1x USB-B, 1x Ethernet
Galvanic isolation from device Max. 1500 V DC
USB specication USB 2.0, socket type B, VCOM driver
USB response time SCPI: max. 5 ms, ModBus: max. 5 ms
Ethernet specication RJ45, 10/100Mbit, TCP/IP, ICMP, HTTP, DHCP
Ethernet response time SCPI: max. 7 ms, ModBus: 9-17 ms
Terminals
Rear side Share Bus, DC output, AC input, remote sensing, analog interface, USB-B, Ethernet
Dimensions
Enclosure (WxHxD) 19“ x 1U x 500 mm
Total (WxHxD) 483 x 44 x min. 565 mm
Weight ~ 11 kg ~ 11 kg ~ 11 kg ~ 11 kg ~ 11 kg
Article number 06230405 06230406 06230407 06230408 06230409
(1
PS 9080-100 PS 9200-50 PS 9360-30 PS 9500-20 PS 9750-12
(1 For technical specications of the analog interface see „3.5.4.4 Analog interface specication“ on page 40
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Page 13
Page 14
PS 9000 1U Series
1.8.4 Views
Page 14
Figure 1 - Front side
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Figure 2 - Rear side
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A - Mains switch D - Exhausts G - AC input connector
B - Control panel E - Share Bus and remote sensing connectors
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C - Control interfaces (digital, analog) F - DC output
Page 15
PS 9000 1U Series
Figure 3 - Left hand side view with DC cover
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Figure 4 - Right hand side view without DC cover
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Page 16
PS 9000 1U Series
Figure 5 - Top view
Page 16
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Figure 6 - Control Panel
Overview of the elements of the operating panel
For a detailed description see section „1.9.4. The control panel (HMI)“.
Display
(1)
Used for indication of set values, menus, conditions, actual values and status.
Left hand rotary knob, with pushbutton function
(2)
Turn: adjusts various set values which are related to the DC output voltage.
Push: selects the decimal position of a value to be changed (cursor)
Button bank
PS 9000 1U Series
Button : Activates the setup menu for various device settings (see „3.4.3. Conguration in the setup
menu“)
Button : Navigates through menus, submenus and parameters (direction: up / left) or changes
view mode
(3)
Button : Navigates through menus, submenus and parameters (direction: down / right) or changes
view mode
Button : Submits altered parameters or set values in submenus, as well enters submenus. Can
also be used to acknowledge alarms.
Button : Cancels changes of parameters in the setup menu or leaves submenus
Right hand rotary knob, with pushbutton function
Turn: adjusts various set values which are related to the DC output current, the DC output power. Also
(4)
adjusts parameters in the setup menu.
Push: selects the decimal position of a value to be changed (cursor)
On/Off Button for DC output
(5)
Used to toggle the DC output between on and off, also used to acknowledge alarms. The LED indicates
the state of the DC output, no matter if the device is manually controlled or remotely (LED on = output on).
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Page 18
PS 9000 1U Series
1.9 Construction and function
1.9.1 General description
The electronic high performance power supplies of the PS 9000 1U series are especially suitable for test systems
and industrial controls due to their compact construction in a 19” enclosure with 2 height units (2U).
For remote control using a PC or PLC the devices are provided as standard with a USB-B slot and an Ethernet
port on the back side as well as a galvanically isolated analog interface. All interfaces are galvanically isolated up
to 1500 V DC.
In addition, the devices offer as standard the possibility for parallel connection in Share bus operation for constant
current sharing. Operating in this way allows up to 10 units to be combined to a single system with a total power
of up to 30 kW.
All models are controlled by microprocessors. These enable an exact and fast measurement and display of actual
values.
1.9.2 Block diagram
The block diagram illustrates the main components inside the device and their relationships.
There are digital, microprocessor controlled components (KE, DR, BE), which can be target of rmware updates.
Share &
Sense
Power stage
DC
AC
=
≈
PS 9000 1U
Block diagram
1.9.3 Scope of delivery
1 x Power supply device
1 x AC cord (IEC type plug, 250 V, 16 A)
1 x USB stick with documentation and software
1 x Share Bus plug
1 x Remote sensing plug
1 x 1.8 m USB cable
ETH
Controller
(DR)
Commu-
nication
(KE)
USB
Ana
log
HMI (BE)
Page 18
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Page 19
PS 9000 1U Series
1.9.4 The control panel (HMI)
The HMI (Human Machine Interface) consists of a display, two rotary knobs with pushbutton function and six
pushbuttons.
1.9.4.1 Display
The graphic display is divided into a number of areas. In normal operation the left upper half is used to show actual
values and the lower half is used to display status information and set values:
Actual values
U/I or U/P
Regulation mode
Alarms
Set value of voltage Status: control location / panel lock Set value of current or
Set value of power
• Actual values area (upper half)
In normal operation the DC output values (large numbers) of voltage and current resp. of power are displayed,
depending on the selected view mode. The display format of values is according to what’s listed in 1.9.4.4.
Furthermore, the actual regulation mode CV, CC or CP (see „3.2. Operating modes“) is displayed here, as well as
alarms with abbreviations (OT, OVP, OCP, PF, OPP). For details refer to „3.3. Alarm conditions“.
• Set values area (lower half, left and right side)
The set values of voltage and current (mode: U/I) resp. of voltage and power (mode: U/P) are displayed here and
are adjustable with the left hand and right hand rotary knobs when operating the device manually. While doing
so, the digit to adjust can be selected by pushing the corresponding rotary knob, in order to move the cursor. The
left hand rotary knob is always assigned to the DC output voltage and related parameters like OVP or U-max,
whereas the right hand rotary knobs is either assigned to the DC output current and related parameters or to the
DC output power. In remote control condition, no matter if analog or digital, the set values given from remote are
displayed here.
Logically, the values are increased by clockwise turning and decreased by anti-clockwise turning, unless they are
somehow limited by a maximum value or an adjustment limit (see „3.4.4. Adjustment limits“).
General display and settings ranges:
Display Unit Range Description
Actual voltage V 0-125% U
Set value voltage V 0-102% U
Actual current A 0.2-125% I
Set value current A 0-102% I
Nom
Actual power W 0-125% P
Set value power W 0-102% P
Nom
Nom
Nom
Nom
Nom
Actual values of DC output voltage
Set value for limiting the DC output voltage
Actual value of DC output current
Set value for limiting the DC output current
Actual value of output power, P = U * I
Set value for limiting DC output power
Adjustment limits A, V, kW 0-102% Nominal val. U-max, I-min etc., related to the physical units
Protection settings A, V, kW 0-110% Nominal val. OVP, OCP etc., related to the physical units
• Status area (lower half, middle)
This area shows the control location mode (see „3.5.2. Control locations“) or another status (see table below). In
case pushbutton is activated while the output is on, the quick menu (see „3.4.7. The quick menu“) will be
displayed:
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Page 20
PS 9000 1U Series
This area furthermore displays various status texts:
Display Description
Locked The HMI is locked
Remote The device is under remote control from...
Analog ...the built-in analog interface
USB ...the built-in USB port or a plug in interface module
Ethernet ...the built-in Ethernet/LAN port
Local The device has been locked by the user explicitly against remote control
1.9.4.2 Rotary knobs
As long as the device is in manual operation, the two rotary knobs are used to adjust set values, as well
as setting the parameters in the settings menu. For a detailed description of the individual functions see
section „3.4 Manual operation“ on page 31.
1.9.4.3 Pushbutton function of the rotary knobs
The rotary knobs also have a pushbutton function which is used in all menu options for value adjustment to move
the cursor by rotation as shown:
1.9.4.4 Resolution of the displayed values
In the display, set values can be adjusted in xed increments. The number of decimal places depends on the
device model. The values have 4 or 5 digits, while actual and set values related to the same physical unit always
have the same number of digits.
Adjustment resolution and number of digits of set values in the display:
Nominal
Voltage,
OVP, U-min, U-max
Min. increment Nominal
Digits
Current,
OCP, I-min, I-max
Min. increment Nominal
Digits
Power,
OPP, P-max
Min. increment
Digits
80 V 4 0.01 V 6 A 4 0.001 A 1500 W 4 1 W
200 V 5 0.01 V 10 A / 12 A 5 0.001 A 3000 W 4 1 W
360 V / 500 V 4 0.1 V 15 A / 20 A 5 0.001 A
750 V 4 0.1 V 25 A 5 0.001 A
30 A / 50 A 4 0.01 A
100 A 5 0.01 A
In manual operation every set value can be set in the increments given above. In this case
the actual output values set by the device will lie within percentage tolerances as shown in the
technical data sheets. These will inuence the actual values.
1.9.5 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 of up to 10 units. It is
furthermore use Following power supply series are compatible:
• PSI 9000 2U
• PSI 9000 3U
• ELR 9000
• PSE 9000
• PS 9000 2U *
• PS 9000 3U *
• EL 9000 B
* From hardware revision 2, see type label (in case it does not show “Revision” on type label, it is revision 1)
Page 20
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Page 21
PS 9000 1U Series
1.9.6 USB port
The USB-B port on the back side of the device is provided
for communication with the device and for rmware updates.
The included USB cable can be used to connect the device
to a PC (USB 2.0, USB 3.0). The driver is delivered on the
included USB stick or is available as download and installs
a virtual COM port. Details for remote control can be found
in external documentation, a general programming guide,
on the web site of the manufacturer or on the included USB
stick.
The device can be addressed via the USB port either using the international standard ModBus protocol or by SCPI
language. The device recognises the message protocol used automatically.
If remote control is in operation the USB port has no priority over either the analog interface or the Ethernet interface
and can, therefore, only be used alternatively to these. However, monitoring is always available.
1.9.7 Ethernet port
The Ethernet port on the back side of the device (standard
version of device only) is provided for communication with
the device in terms of remote control or monitoring. The user
has basically two options of access:
1. A website (HTTP, port 80) which is accessible in a standard
browser under the IP or the host name given for the device.
This website offers to conguration page for network parameters, as well as a input box for SCPI commands.
2. TCP/IP access via a freely selectable port (except 80 and other reserved ports). The standard port for this device
is 5025, default IP is 192.168.0.2. Via TCP/IP and this port, communication to the device can be established in
most of the common programming languages.
Using the Ethernet port, the device can either be controlled by commands from SCPI or ModBus protocol, while
automatically detecting the type of message.
The network setup can be done manually or by DHCP. The transmission speed is set to “Auto negotiation” and
means it can use 10MBit/s or 100MBit/s. 1GB/s is not supported. Duplex mode is always full duplex.
If remote control is in operation the Ethernet port has no priority over either the analog interface or the USB interface
and can, therefore, only be used alternatively to these. However, monitoring is always available.
1.9.8 Analog interface
This 15 pole Sub-D socket on the back side of the device is
provided for remote control of the device via analog signals
or switching conditions.
If remote control is in operation this analog interface can
only be used alternately to the digital interface. However,
monitoring is always available.
The input voltage range of the set values and the output voltage range of the monitor values, as well as reference
voltage level can be switched in the settings menu of the device between 0-5 V and 0-10 V, in each case for 0-100%.
1.9.9 Sense connector (remote sensing)
During constant voltage operation (CV) and in case the adjusted output voltage has
to be held constant on the load and not on the power supply’s DC output, remote
sensing can be used in order to compensate for the voltage drop on cables up to
a certain limit. The maximum possible compensation is given in the technical data.
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Page 22
PS 9000 1U Series
2. Installation & commissioning
2.1 Transport and storage
2.1.1 Transport
• The handles on the front side of the device are not for carrying!
• Do not transport when switched on or connected!
• When relocating the equipment use of the original packing is recommended
• The device should always be carried and mounted horizontally
• Use suitable safety clothing, especially safety shoes, when carrying the equipment, as due to
its weight a fall can have serious consequences.
2.1.2 Packaging
It is recommended to keep the complete transport packaging for the lifetime of the device for relocation or return
to the manufacturer 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 equipment 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.
2.2 Unpacking and visual check
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 „1.9.3. Scope of
delivery“). An obviously damaged device (e.g. loose parts inside, damage outside) must under no circumstances
be put in operation.
2.3 Installation
2.3.1 Safety procedures before installation and use
• When using a 19” rack, rails suitable for the width of the housing and the weight of the device
are to be used. (see „1.8.3. Specic technical data“)
• Before connecting to the mains ensure that the connection is as shown on the product label.
Overvoltage on the AC supply can cause equipment damage.
2.3.2 Preparation
Mains connection for a PS 9000 1U 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 a minimum cross section of 1.5 mm² (AWG 12).
Dimensioning of the DC wiring to the load/consumer has to reect the following:
• The cable cross section should always be specied for at least the maximum input current of
the device.
• Continuous operation at the approved limit generates heat which must be removed, as well as
voltage loss which depends on cable length and heating. To compensate for these the cable
cross section should be increased and the cable length reduced.
Page 22
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Page 23
PS 9000 1U Series
2.3.3 Installing the device
• Select the location for the device so that the connection to the load is as short as possible!
• Leave sufcient space behind the equipment, minimum 30cm, for ventilation!
• The device is not stackable!
• Do not put anything with a total weight of more than 1kg on top of the device!
A device in a 19” housing will usually be mounted on suitable rails and installed in 19” racks or cabinets. The depth
of the device and its weight must be taken into account. The handles on the front are for sliding in and out of the
cabinet. Slots on the front plate are provided for xing the device (xing screws not included).
Acceptable and inacceptable installation positions:
Standing surface
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 maxi-
mum current (power ÷ minimum voltage) does not exceed the denition for the wall socket,
the multi-socket outlet and/or main distribution
• Before plugging in the input plug ensure that the device is switched off by its mains switch!
The device is delivered with a 3 wire mains cord (L, N, PE). If the device is going to be connected to a standard
2-phase or 3-phase supply, following phases are required:
Nominal power Phases Supply type
1.5 kW / 3 kW L1 or L2 or L3, N, PE At least wall socket 16 A
The default input values of all models in this series are: 230 V, 16 A, 50 Hz. It is internally fused with 16 A. The 16
A input denition is due to the AC input current depending on the higher intake at low AC voltage (for minimum
input voltage see technical specs).
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Page 24
PS 9000 1U Series
2.3.5 Connection to DC loads
• In the case of a device with a high nominal current and hence a thick and heavy DC
connection cable it is necessary to take account of the weight of the cable and the
strain imposed on the DC connection. Especially when mounted in a 19” cabinet or
similar, where the cable hangs on the DC output, a strain reliever should be used.
• Connection to and operation with transformerless DC-AC inverters (for example solar inverters) is restricted, because the inverter can shift the potential of negative
output (DC-) against PE (ground), which is generally limited to max. ±400 V DC.
The DC load output is on the rear side of the device and is not protected by a fuse. The cross section of the connection cable is determined by the current consumption, cable length and ambient temperature.
For cables up to 1.5 m and average ambient temperature up to 50°C, we recommend:
up to 10 A: 0,75 mm² (AWG18) up to 15 A: 1,5 mm² (AWG14)
up to 30 A: 4 mm² (AWG10) up to 40 A: 6 mm² (AWG8)
up to 60 A: 16 mm² (AWG4) up to 100 A: 25 mm² (AWG2)
per lead (multi-conductor, insulated, openly suspended). Single cables of, for example, 70 mm² may be replaced
by e.g. 2x35 mm² etc. If the cables are long then the cross section must be increased to avoid voltage loss and
overheating.
2.3.5.1 DC terminal
The table below shows an overview of the various DC terminals. It is recommended that connection of load cables
always utilises exible cables with ring lugs.
M6 bolt on a nickel plated copper bar
Recommendation: Ring lugs with a 6 mm hole
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.
Page 24
The connection angle and the required bending radius for the DC cable must be taken into
account when planning the depth of the complete device, especially when installing in a 19”
cabinet or similar. In case, the plastic DC cover is going to be used, only horizontal lead of the
cables is possible.
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PS 9000 1U Series
2.3.6 Grounding of the DC output
Individually operated devices can always be grounded from the DC minus pole, i.e. can be directly connected to
PE. The DC plus pole, however, if it is to be grounded, may only be so for output voltages up to 400 V, unless
stated otherwise in the technical specications.
For this reason, for all models which can provide an output voltage of more than 400 V, earthing of the DC plus
pole is not recommended, because it will shift the potential of the DC minus pole in negative direction, up to the
maximum output voltage. If the output voltage is not adjusted higher than 400 V, grounding the DC plus pole is
allowed with restrictions.
• Grounding of the DC-plus pole for any model with >400 V nominal voltage only at one’s own
risk! Risk of damaging the device! Risk of voiding warranty!
• Digital and analog interface are galvanically isolated from the DC output and should never be
grounded, but under no circumstances if any of the DC output poles is grounded too, because
this will cancel the galvanic isolation
• If grounding one of the DC output poles check if any pole of the load is already grounded. This
could lead to a short circuit!
2.3.7 Connection of remote sensing
In order to compensate, to a certain degree, the voltage loss in a DC cable, the device provides the possibility to
connect the remote sensing input “Sense” to the load. The device recognizes the remote sensing mode automatically and regulates the output voltage (only in CV operation) at the load rather than at its own DC output.
In the technical specications (see section „1.8.3. Specic technical data“) the level of maximum possible com-
pensation is given. If that is insufcient, the cable cross section must be increased.
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
• Sense cables should be twisted and laid close to the DC cables to damp oscillation. If neces-
sary, an additional capacitor should be installed at the load/consumer to eliminate oscillation
• The sense cables must be connected + to + and - to - at the load, otherwise both systems
may be damaged
Figure 7 - Example for remote sensing wiring
2.3.8 Connecting the “Share” bus
The “Share” connector on the back side is intended to balance the current of multiple units in parallel operation,
especially when using the integrated function generator of the master unit. For further information about this mode
of operation can be found in section „3.9.1. Parallel operation in Share Bus mode“ .
For the connection of the share bus the following must be paid attention to:
• Connection is only permitted between compatible devices (see „1.9.5. Share Bus-Connection“
for details) and between a max. of 10 units
• The Share bus is referenced to DC minus output and thus affected by potential shifts. The
potential of the DC minus has to considered when connecting the Share bus to other devices!
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PS 9000 1U Series
2.3.9 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 controlling 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 output.
The analog interface is galvanically isolated from the device internally. Therefore do not
connect any ground of the analog interface (AGND) to the DC minus output as this will
cancel the galvanic isolation.
2.3.10 Connecting the USB port
In order to remotely control the device via this port, connect the device with a PC using the included USB cable
and switch the device on.
2.3.10.1 Driver installation (Windows)
On the initial connection with a PC the operating system will identify the device as new hardware and will try to
install a driver. The required driver is for a Communications Device Class (CDC) device and is usually integrated in
current operating systems such as Windows 7 or 10. But it is strongly recommended to use and install the included
driver installer (on USB stick) to gain maximum compatibility of the device to our softwares.
2.3.10.2 Driver installation (Linux, MacOS)
We cannot provide drivers or installation instructions for these operating systems. Whether a suitable driver is
available is best carried out by searching the Internet.
2.3.10.3 Alternative drivers
In case the CDC drivers described above are not available on your system, or for some reason do not function
correctly, commercial suppliers can help. Search the Internet for suppliers using the keywords “cdc driver windows“
or “cdc driver linux“ or “cdc driver macos“.
2.3.11 Initial commission
For the rst start-up after purchasing and installing the device, the following procedures have to be executed:
• Conrm that the connection cables to be used are of a satisfactory cross section
• Check that the default settings for set values, safety and monitoring functions and communication are suitable
for your application and change them where necessary, as described in the manual
• In case of remote control via PC, read the additional documentation for interfaces and software
• In case of remote control via the analog interface, read the section in this manual concerning analog interfaces
and, where needed, other appropriate documentation especially concerning the use of such interfaces
Page 26
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Page 27
PS 9000 1U Series
2.3.12 Initial network setup
The device is delivered with default network parameters (see „3.4.3.6. Menu “Communication”“). The Ethernet/
LAN port is immediately ready for use after the initial commission. Default parameters:
IP: 192.168.0.2
Subnet mask: 255.255.255.0
Gateway: 192.168.0.1
Port: 5025
DHCP: off
For wiring, i.e. the hardware connection to a network, contact and ask your IT manager or any similar responsible
person. Network cable of common type (CAT5 or better) can be used.
In order to set up the network parameter to your needs, you have three options: the setup menu or the device’s
website or the software „EPS Power Control“, which is available since April 2015 as download or included with
your device. For the conguration in the setup menu please refer to „3.4.3.6. Menu “Communication”“.
For the conguration via the device’s website or EPS Power Control, you need the device to be connected to a
network or directly to a PC which can access the default IP 192.168.0.2.
► How to do the network setup on the device website
1. In case the device display is in any kind of menu, lave menu to main display.
2. Open the device website in a browser by entering the default IP (http://192.168.0.2) or the default host name
(http://Client, only possible if there is a running DNS in the network) into the URL box.
3. After the website has been completely loaded, check the status eld item “Access” to show the status “free”.
In case it shows different, the device is either already in remote control (rem) or blocked from remote control
(local). If it shows “local”, rst remove the block. Refer to section „3.5.2. Control locations“ to do that.
4. If it says “rem” in the “Access” item, skip to step 4. Else enter command syst:lock on (attention! space
before on) into the SCPI command box and send with return key. Check if item “Access” in status eld
changes to “rem-eth” (means: remote Ethernet).
5. Switch to page CONFIGURATION (upper left corner) and set up the network parameters as well as the port
here resp. activate DHCP and submit the change with SUBMIT button.
6. Wait a few seconds before testing the new IP by entering it in the browser’s URL box. Opening the website
again by using the host name is only possible after the device has restarted, because only then the new IP
is reported to the DNS.
2.3.13 Commission after a rmware update or a long period of non-use
In case of a rmware update, return of the equipment following repair or a location or conguration change, similar
measures should be taken to those of initial start up. Refer to „2.3.11. Initial commission“.
Only after successful checking of the device as listed may it be operated as usual.
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Page 27
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PS 9000 1U Series
3. Operation and application
3.1 Important notes
3.1.1 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
such, the included DC terminal cover, or an equivalent, must always be used
• Whenever the load and DC output are being re-congured, the device should be disconnected
from the mains, not only the DC output switched off!
3.1.2 General
• Operation of a power supply without any load or a very small load (<0.5% of INom) is not
considered as a normal operation mode
• Technical specications can probably not be guaranteed when running a power supply without
a load
• It is recommended to run a power supply always with at least 10% voltage and current load
3.2 Operating modes
A power supply is internally controlled by different control or regulation circuits, which shall bring voltage, current
and power to the adjusted values and hold them constant, if possible. These circuits follow typical laws of control
systems engineering, resulting in different operating modes. Every operating mode has its own characteristics
which is explained below in short form.
3.2.1 Voltage regulation / Constant voltage
Voltage regulation is also called constant voltage operation (CV).
The DC output voltage of a power supply is held constant on the adjusted value, unless the output current or the
output power according to P = U
will automatically change to constant current or constant power operation, whatever occurs rst. Then the output
voltage can not be held constant anymore and will sink to a value resulting from Ohm’s law.
While the DC output is switched on and constant voltage mode is active, then the condition “CV mode active”
will be indicated on the display by the abbreviation CV and this message will be passed as a signal to the analog
interface, as well stored as status which can also be read as a status message via digital interface.
3.2.2 Current regulation / constant current / current limiting
Current regulation is also known as current limitation or constant current mode (CC).
The DC output current is held constant by the power supply, once the output current to the load reaches the adjusted
limit. Then the power supply automatically switches The current owing from the power supply is determined by the
output voltage and the load’s true resistance. As long as the output current is lower than the adjusted current limit,
the device will be either in constant voltage or constant power mode. If, however, the power consumption reaches
the set maximum power value, the device will switch automatically to power limiting and sets the output current
according to I
by the user, is always an upper limit only.
While the DC output is switched on and constant current mode is active, then the condition “CC mode active” will
be indicated on the display by the abbreviation CC and this message will be passed as a signal to the analog
interface, as well stored as status which can also be read as a status message via digital interface.
MAX
= P
/ UIN , even if the maximum current value is higher. The current set value, as determined
SET
OUT
* I
reaches the adjusted current or power limit. In both cases the device
OUT
Page 28
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Page 29
PS 9000 1U 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 owing to the load in
relation to the output voltage and the resistance of the load reaches the adjusted
power value according to P = U * I resp. P = U² / R. The power limitation then regulates the output current according to I = sqr(P / R), where R is the load’s resistance.
Power limiting operates according to the auto-range principle such that at lower
output voltages higher current ows and vice versa in order to maintain constant
power within the range P
Constant power operation primarily impacts the output current. This means, the
adjusted maximum output current can not be achieved if the maximum power value
limits the output current according to I = P / U. The adjustable set value of current,
as indicated in the display, is always only an upper limit.
While the DC output is switched on and constant power mode is active, then the condition “CP mode active” will
be shown on the display by the abbreviation CP and can also be read as a status message via digital interface.
3.2.3.1 Power derating
The power supplies of series PS 9000 1U offer an extended AC supply voltage range, but are dedicated for the
use at typical 230 VAC, ±10%. Below a certain supply voltage, all models will automatically start to derate, i.e.
reduce the maximum available output power. The derating happens on the AC input side and thus the device will
not indicate the derating condition as “CP” (constant power resp. power limitation).
Depending on the nominal power of the particular model, the derating acts at different supply voltages:
• 3 kW models
▪ Below approx. 207 VAC: Derating to max. 2500 W output power
▪ Below approx. 180 VAC: Shutdown of the DC output
(see diagram to the right)
N
• 1.5 kW models
▪ Below approx. 150 VAC: Derating to max. 1000 W output power
▪ Below approx. 90 VAC: Shutdown of the DC output
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Page 29
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PS 9000 1U Series
3.3 Alarm conditions
This section only gives an overview about device alarms. What to do in case your device indicates 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 via the digital interface. With any alarm occurring, the DC output of the device
is switched off. In addition, the alarms OT and OVP are reported as signals on the analogue interface.
3.3.1 Power Fail
Power Fail (PF) indicates an alarm condition which may have various causes:
• AC input voltage too high (mains overvoltage) or too low (mains undervoltage, mains failure)
• Defect in the input circuit (PFC)
Switching off the device by the mains switch can not be distinguished from a mains blackout
and thus the device will signalise a PF alarm every time the device is switched off. This can
be ignored.
3.3.2 Overtemperature
An overtemperature alarm (OT) can occur if
• an excess temperature inside the device causes to switch off the DC output.
Internal overtemperature and subsequent temporary shutdown is usually caused by insufcient cooling (excess
ambient temperature, fans and air inlets polluted). The fans will still cool down the unit until it can automatically
switch on again to continue operation.
3.3.3 Overvoltage
An overvoltage alarm (OVP) will switch off the DC output and can occur if
• the power supply itself, as a voltage source, generates an output voltage higher than set for the overvoltage
alarm threshold (OVP, 0...110% U
) or the connected load somehow returns voltage higher than set for the
Nom
overvoltage alarm threshold
• the OV threshold has been adjusted too close above the output voltage. If the device is in CC mode and if it
then experiences a negative load step, it will make the voltage rise quickly, resulting in an voltage overshoot for
a short moment which can already trigger the OVP
This function serves to warn the user of the power supply acoustically or optically that the device probably has
generated an excessive voltage which could damage the connected load application.
The device is not tted with protection from external overvoltage. Overvoltage can
damage parts inside!
3.3.4 Overcurrent
An overcurrent alarm (OCP) will switch off the DC output and can occur if
• the output current in the DC output reaches the adjusted OCP limit.
This function serves to protect the connected load application so that this is not overloaded and possibly damaged
due to an excessive current.
3.3.5 Overpower
An overpower alarm (OPP) will switch off the DC output and can occur if:
• the product of the output voltage and output current in the DC output reaches the adjusted OPP limit.
This function serves to protect the connected load application so that this is not overloaded and possibly damaged
due to an excessive power consumption.
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Page 31
PS 9000 1U Series
3.4 Manual operation
3.4.1 Switching on 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.
After switching on, the display will show the manufacturers logo for a few seconds, plus some information like
device model, rmware version(s), serial number and item number and will then be ready for use. In setup (see
section „3.4.3. Conguration in the setup menu“) in the second level menu “General” is an option “DC output
after power ON” in which the user can determine the condition of the DC output after power-up. Factory setting
here is “OFF”, meaning that the DC output on power-up is always switched off. Selection “Restore” means that
the last condition of the DC output will be restored, either on or off. All set values are always saved and restored.
3.4.2 Switching off the device
On switch-off the last output condition and the most recent set values are saved. Furthermore, a “PF” alarm (power
failure) will be reported, but can be ignored.
The DC output is immediately switched off and after a short while fans will shut down and after another few seconds
the device will be completely powered off.
3.4.3 Conguration in the setup menu
The setup menu serves to congure all operating parameters which are not constantly required. It can be entered
by pushing , but only while the DC output is switched off. See gures below.
If the DC output is switched on the settings menu will not be shown, but the quick menu and some status information.
Menu navigation is done with the pushbuttons , and . Parameters (values, settings) are set using
the rotary knobs.
The assignments of the rotary knobs, if multiple values can be set in a particular menu, is always the same: parameters on the left-hand side -> left-hand knob, parameters on the right-hand side -> right-hand knob
The menu structure is shown schematically on the next page.
Some setting parameters are self-explanatory, others are not.
The latter will be explained on the pages following.
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Page 31
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PS 9000 1U Series
U = ____V I = ____A P = ____W
Output
Protect ion OVP = ____V OCP = ____ A O PP = __ __W
P-max = ____W
Allow remote cont rol: Yes | No
Analog interface range: 0... 5V | 0... 10 V
Analog inte rfa ce Rem-SB: N orm al | Inverted
Analog Rem-SB a ction : DC OFF | DC ON /OF F
DC output after Power ON: OFF | Rest ore
DC output after PF alarm: OFF | AUTO
U-min = ____V U-max = ____ V
I-min = __ __A I-max = ____ A
Li m it s
General
Calib rat ion
Rese t
Shar e Bu s m ode: Slave | Master
Default P rof.
Get IP address: Manual | DHCP
IP address: 0.0.0.0 ... 255.25 5.255.255
Subnet mask: 0.0.0.0 ... 255.255.25 5.255
User Prof. 1... 5
IP Se ttings 2
IP Se ttings 1
Port: 0...65535
Gate way: 0.0.0.0 ... 255.255.255.25 5
Com Timeo ut
DNS add res s: 0.0.0.0 ... 255.25 5.25 5.255
Timeout USB (ms): 5... 65 53 5
Timeout ETH (s): 5...65535
Enabled: SCPI only | ModBus only | SCPI&ModBus
Com Pro to.
View settings
Language: English|Deutsch
Language
Brightness: 1... 10
Display
Page Setup View mode: UI | UP
HMI lock : Lock all | ON/OFF possible
Enable PIN: Yes | No
Change user PIN: START
Key Sound Key sound: ON|OFF
HMI Lock
Alarm Sound Alarm s ound: ON|OFF
MENU Settings
Page 32
Overview
Underlined parameters show the default value after delivery or reset.
Profiles
About HW, SW
Com mu nic at io n
HMI S etup
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PS 9000 1U Series
3.4.3.1 Menu “General Settings”
Element P. Description
Allow remote control 1 Selection “NO” means that the device cannot be remotely controlled over any of
the digital or analog interfaces. If remote control is not allowed, the status will be
shown as “Local” in the status area on the main display. Also see section 1.9.4.1
Analog interface range 2 Selects the voltage range for the analog set input values, actual output values
and reference voltage output of the analog interface on the rear.
• 0...5 V = Range is 0...100% set /actual values, reference voltage 5 V
• 0...10 V = Range is 0...100% set /actual values, reference voltage 10 V
See also section „3.5.4. Remote control via the analog interface (AI)“
Analog interface Rem-SB 3 Determines with “normal” (default), that the function and levels of input Rem-
SB are as described in „3.5.4.4. Analog interface specication“. With selection
“inverted”, the described function is logically inverted. Also see example a) in
„3.5.4.7. Application examples“.
Analog Rem-SB action 4 Since Firmware 2.03, the input REM-SB of the analog interface can be used
to control the DC output of the device even without remote control via analog
interface being activated. This setting determines the type of action:
• DC OFF = Toggling the pin only switches the DC output off
• DC ON/OFF = If the DC output has been switched on before, toggling the pin
can switch the output off and on again
DC output after power ON 5 Determines the condition of the DC output after power-up.
• OFF = DC output is always off after switching on the device.
• Restore = DC output condition will be restored to the condition prior to switch off.
DC output after PF alarm 6 Determines how the DC output shall react after a power fail (PF) alarm has
occurred:
• OFF = DC output will be switched off and remain until user action
• AUTO = DC output will switch on again after the PF alarm cause is gone and
if it was switched on before the alarm occurred
Share Bus mode 7 Default setting: Slave
For parallel operation of multiple units, where using the Share bus connection
is recommended. In parallel operation, any unit could be master.
3.4.3.2 Menu “Calibrate Device”
From within this menu, a calibration and readjustment procedure for output voltage and current, separate procedures for set value and actual value, can be started. For further details refer to „4.3. Calibration (readjustment)“.
Element Description
Voltage
Sense volt.
Current
Cal. date
Save & exit
Starts the semi-automatic calibration procedure for output voltage U
Starts the semi-automatic calibration procedure for remote sensing input „Sense“
Starts the semi-automatic calibration procedure for output current I
Here you can enter the date of the most recent calibration (year, month, day)
This menu item saves and leaves the setup menu to main display
3.4.3.3 Menu “Reset Device”
Entering this menu item will prompt for acknowledgement to reset the device completely to default settings and
set values. Selection “No” will cancel the reset procedure, while selection “Yes”, submitted by button, will
instantly reset the device.
3.4.3.4 Menu “Proles”
See „3.8 Loading and saving a user prole“ on page 45.
3.4.3.5 Menus “Overview” and “About HW, SW...”
This menu pages display an overview of the set values (U, I, P), related protection settings (OVP, OCP, OPP),
limits settings and an alarm history (counter) of alarms that might have occurred since the last time the unit was
switched on. Furthermore, you can nd information about the device (model, serial number, rmware versions etc.).
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Page 33
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PS 9000 1U Series
3.4.3.6 Menu “Communication”
Here settings for the Ethernet port (on rear side of device) are made. The USB port there doesn’t require any settings.
When delivered or after a complete reset, the Ethernet port has following default settings assigned:
• DHCP: off
• IP: 192.168.0.2
• Subnet mask: 255.255.255.0
• Gateway: 192.168.0.1
• Port: 5025
• DNS: 0.0.0.0
• Host name: Client
• Domain: Workgroup
Those settings can be changed anytime at will, in the setup menu or via the device website, which you can open
from the current IP or host name (also see 2.3.12).
Submenu “IP Settings 1”
Element Description
Get IP address Manual (default): uses the default (after delivery or reset) or the last set network parameters.
Those parameters are not overwritten by selection “DHCP” and remain when switching back
from “DHCP” to “Manual”
DHCP: after switching to DHCP and submitting the change with button , the device will
instantly try to get network parameters (IP, subnet mask, gateway, DNS) assigned from a DHCP
server. If the attempt fails, the device will use the settings from “Manual” again. In this case, the
overview in screen “View settings” will indicate the DCHP status as “DHCP (failed)”, otherwise
as “DHCP(active)”
IP address Only available with setting “Get IP address = Manual”. Default value: 192.168.0.2
Permanent manual setting of the device’s IP address in standard IP format
Subnet mask Only available with setting “Get IP address = Manual”. Default value: 255.255.255.0
Permanent manual setting of the subnet mask in standard IP format
Gateway Only available with setting “Get IP address = Manual”. Default value: 192.168.0.1
Permanent manual setting of the gateway address in standard IP format
Submenu “IP Settings 2”
Element Description
Port Default value: 5025
Adjust the socket port here, which belongs to the IP address and serves for TCP/P access when
controlling the device remotely via Ethernet
DNS address Default value: 0.0.0.0
Permanent manual setting of the network address of a domain name server (short: DNS) which
has to be present in order to translate the host name to the device’s IP, so the device could
alternatively access by the host name
Submenu “Com Proto.” (communication protocols)
Element Description
Enabled Default value: SCPI&ModBus
Enables or disables SCPI or ModBus communication protocols for the device. The change is
immediately effective after submitting it with ENTER button. Only one of both can be disabled.
Submenu “Com Timeout” (communication timeout)
Element Description
Timeout USB (ms) Default value: 5
Communication timeout in milliseconds. Denes the max. time between two subsequent
bytes or blocks of a transferred message. For more information about the timeout refer to
the external programming documentation “Programming ModBus & SCPI”.
Timeout ETH (s) Default value: 5
Adjustable time, after which the device will automatically disconnect the socket connection,
if there was no communication during that period
Page 34
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Page 35
PS 9000 1U Series
3.4.3.7 Menu “HMI Setup”
These settings refer exclusively to the control panel (HMI) and the display. The table lists all available settings for
the HMI, no matter in which submenu they can be found.
Element Description
Language Selection of the display language between “Deutsch” and “English”
Brightness The brightness, i.e. background illumination of the display can be adjusted here. Range is 1...10,
default is 10.
View mode The display mode of actual and set values can be switched here. Refer to „3.4.5. Display modes
for actual and set values“ for details
Key Sound Activates or deactivates sounds when pushing a button on the HMI. It can usefully signal that
the action has been accepted.
Alarm Sound Activates or deactivates the additional acoustic signal of an alarm. See also „3.6. Alarms and
monitoring“.
HMI Lock Activates the HMI lock. See „3.7. Control panel (HMI) lock“ for details
3.4.4 Adjustment limits
By default, all set values (U, I, P) are freely adjustable from 0 to 100%.
This may be obstructive in some cases, especially for protection of
applications against overcurrent. Therefore upper and lower limits for
current and voltage can be set which limit the range of the adjustable
set values. For power only an upper value limit can be set.
These limits apply to every kind setting a value. That also includes remote control via analog or digital interface.
In remote control, the global range of 0...100% (digital) resp. 0...5 V / 0...10 V remains, only narrowed by the limits
dened here.
An example: you would dene the limits for a model with 80 V, 120 A and 3 kW as depicted in the screen above,
with U-min = 10V and U-max = 75 V. In analog remote control, the active control voltage range for mode 0...10 V
results as 1.25 V...9.375 V. As soon as the device is switched to analog remote control, it would put out minimum
10V, even there is nothing connected to voltage control input VSEL.
Beyond those limits, values given by digital commands are not accepted and will return an error (when using SCPI).
Values given from analog control voltages are ignored (clipping).
► How to congure the adjustment limits
1. Switch off the DC output and push button to call the setup menu.
2. Push button to call submenu “Settings”. In the submenu navigate to “Limits” and push again.
3. In the screen you can now adjust the settings I-min, I-max, U-min, U-max and P-max with the rotary knobs.
Switching between values for current and power is done with the arrow buttons and .
4. Accept the settings with or discard them with .
The adjustment limits are coupled to the set values. It means, that the upper limit (-max) may
not be set lower than the corresponding set value. Example: If you wish to set the limit for the
current set value I-max to 90 A while the currently adjusted current set value is 100 A, then the
set value rst would have to be reduced to 90 A or less.
The same applies vice versa when adjusting I-min.
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Page 35
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PS 9000 1U Series
3.4.5 Display modes for actual and set values
In general, the display of a PS 9000 1U device shows the actual output voltage and the related set value in the left
half of the display and the actual output current and related set value in the right half. In order to have the power
set value in direct access, the display mode can be switched.
Mode UI Only voltage (U) and current (I) are displayed. This is the default mode.
The set value of power is then only accessible in the setup menu or
when switching to a different view mode with the arrow buttons
or .
Mode UP Alternatively to the actual and set values of current (I) and voltage (U)
the actual and set values of power (P) are displayed.
The set value of current is then only accessible in the setup menu or
when switching to a different view mode with the arrow buttons
or .
► How to change the display mode in the menu
1. Switch off the DC output and push button to call the setup menu.
2. In the menu navigate to “HMI Setup” and push . Then in the submenu navigate to “Page Setup” and
push again.
3. Select the desired display mode (see above) with the right-hand rotary knob.
4. Accept the settings with or discard them with .
► How to change the display mode directly
1. During normal display (as shown in the gures above), push any of the arrow buttons to switch
between the view modes.
Depending on your setting, the main display will change after leaving the setup menu and the right-hand rotary
knob is then either assigned to set value of current or power
3.4.6 Manual adjustment of set values
Adjusting set values of voltage, current and power is a key feature of a power supply and hence the two rotary
knobs on the front of the device are usually assigned to two of the three values, in manual operation. Default assignment is voltage and current.
During manual operation, these set values can only be adjusted with the rotary knobs.
Adjusting a value is immediately submitted, no matter if the output is switched on or off.
When adjusting the set values, upper or lower limits may come into effect. See section „3.4.4.
Adjustment limits“. Once a limit is reached, the display will show a note like “Limit: U-max” etc.
for ~2 seconds.
► How to adjust values U, I or P with the rotary knobs
1. First check whether the value to be changed is assigned to one of the rotary knobs already. The assignment
can be changed by selecting a different view mode. See „3.4.5. Display modes for actual and set values“.
2. With mode UI selected and as long as the main display is active, turn the left-hand knob to adjust output
voltage and the right-hand knob to adjust the output current. In mode UP, turn the right-hand knob to adjust
the output power, as long as the power set value with unit W (Watts) is displayed. The arrow buttons
can be used to toggle between current and power set value.
3. Any set values can be adjusted with the adjustment limits. For switching the digit to adjust, push the rotary
knob that you are currently using to adjust the value. Every push moves the cursor under the digit in clockwise order:
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3.4.7 The quick menu
The quick menu is an alternative menu for quick access to ofine features while the DC output is online.
It is accessible with the button and looks like this:
Navigation in the menu is also done with arrow buttons / and .
You can select the between view mode and the HMI lock, each with three button pushes.
Attention! If you activate the HMI from within the quick menu, the additional PIN lock might
become active, depending on your settings in the MENU. There is no extra indication here!
3.4.8 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.
Switching the DC output on during manual operation or digital remote control can be disabled by
pin REM-SB of the built-in analog interface. For more information refer to 3.4.3.1 and example
a) in 3.5.4.7.
► How to manually switch the DC output on or off
1. As long as the control panel (HMI) is not fully locked press the button . Otherwise you are asked to
disable the HMI lock rst.
2. This button toggles between on and off, as long as a change is not restricted by an alarm or the device is
locked in “remote”. The current condition is displayed with the LED in the button (LED on = output on).
► How to remotely switch the DC output on or off via the analog interface
1. See section “„3.5.4 Remote control via the analog interface (AI)“ on page 39.
► How to remotely switch the DC output on or off via the digital interface
1. 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 software, if available, provided by the manufacturer.
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PS 9000 1U Series
3.5 Remote control
3.5.1 General
Remote control is principally possible via any of the built-in interface ports USB, Ethernet/LAN or analog. Important
here is that only the analog or any digital interface can be in control. It means that if, for example, an attempt were
to be made to switch to remote control via the digital interface whilst analog remote control is active (pin Remote
= LOW) the device would report an error at the digital interface. In the opposite direction a switch-over via pin
Remote would be ignored. In both cases, however, status monitoring and reading of values are always possible.
3.5.2 Control locations
Control locations are those locations from where the device is controlled. Essentially there are two: at the device
(manual operation) and outside (remote control). The following locations are dened:
Displayed location Description
- If neither of the other locations is displayed then manual control is active and access from
the analog or digital interfaces is allowed. This location is not explicitly displayed
Remote Remote control via any interface is active
Local Remote control is locked, only manual operation is allowed.
Remote control may be allowed or inhibited using the setting “Allow remote control” (see „3.4.3.1. Menu “General
Settings”“). In inhibited condition the status “Local” will be displayed in the status area (lower half, middle) of the
display. Activating the inhibit can be useful if the device is remotely controlled by software or some electronic device,
but it is required to make adjustments at the device or deal with emergency, which would not be possible remotely.
Activating condition “Local” causes the following:
• If remote control via the digital interface is active (“Remote”), then remote control is immediately terminated and
must be reactivated at the PC once “Local” is no longer active
• If remote control is via the analog interface is active (“Remote”), then remote operation is only interrupted until
remote control is allowed again, because pin “Remote” continues to signal “remote control = on”. Exception: if
the level of pin “Remote” is changed to HIGH during the “Local” phase
3.5.3 Remote control via a digital interface
3.5.3.1 Selecting an interface
The device only supports the built-in digital interfaces USB and Ethernet. For USB, a standard USB cable is included
in the delivery, as well as a driver for Windows on USB stick. The USB interface requires no setup.
The Ethernet interface typically requires network setup (manual or DHCP), but can also be used with its default
parameters right from the start.
The GPIB interface requires you to select a unique address in case it is connected to other GPIB bus members.
3.5.3.2 General
For the network port installation refer to „1.9.7. Ethernet port“.
The digital interface require little or no setup for operation and can be directly used with their default conguration.
All specic settings will be permanently stored, but could also be reset to defaults with the setup menu item “Reset”.
Via the digital interface primarily the set values (voltage, current, power) and device conditions can be set and monitored. Furthermore, various other functions are supported as described in separate programming documentation.
Changing to remote control will retain the last set values for the device until these are changed. Thus a simple
voltage control by setting a target value is possible without changing any other values.
3.5.3.3 Programming
Programming details for the interfaces, the communication protocols etc. are to be found in the documentation
“Programming Guide ModBus & SCPI“ which is supplied on the included USB stick or which is available as download from the manufacturer’s website.
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3.5.4 Remote control via the analog interface (AI)
3.5.4.1 General
The built-in, up to 1500 V DC galvanically separated, 15-pole analog interface (short: AI) is on the rear side of the
device offers the following possibilities:
• Remote control of current, voltage and power
• Remote status monitoring (CC/CP, CV)
• Remote alarm monitoring (OT, OVP)
• Remote monitoring of actual values
• Remote on/off switching of the DC output
Setting the three set values via the analog interface always takes place concurrently. It means, that for example
the voltage can not be given via the AI and current and power set by the rotary knobs, or vice versa.
The OVP set value and other supervision (events) and alarm thresholds cannot be set via the AI and therefore
must be adapted to the given situation before the AI is put in operation. Analog set values can be fed in by an external voltage or generated by the reference voltage on pin 3. As soon as remote control via the analog interface
is activated, the values displayed will be those provided by the interface.
The AI can be operated in the common voltage ranges 0...5 V and 0...10 V in each case 0...100% of the nominal
value. The selection of the voltage range can be done in the device setup. See section „3.4.3. Conguration in the
setup menu“ for details.
The reference voltage sent out from Pin 3 (VREF) will be adapted accordingly and is then:
0-5 V: Reference voltage = 5 V, 0...5 V set values (VSEL, CSEL, PSEL) correspond to 0...100% nominal values,
0...100% actual values correspond to 0...5 V at the actual value outputs (CMON, VMON).
0-10 V: .Reference voltage = 10 V, 0...10 V set values (VSEL, CSEL, PSEL) correspond to 0...100% nominal values,
0...100% actual values correspond to 0...10 V at the actual value outputs (CMON, VMON).
Input of excess set values (e.g. >5 V in selected 5 V range or >10 V in the 10 V range) are clipped by setting the
set value at 100%.
Before you begin, please read these important notes for use of the interface:
• Analog remote control of the device must be activated by switching pin “REMOTE” (5) rst. Only exception is
pin REM-SB, which can be used independently since KE rmware version 2.03
• Before the hardware is connected that will control the analog interface, it shall be checked that it can’t provide
voltage to the pins higher than specied
• Set value input, such as VSEL, CSEL and PSEL, must not be left unconnected (i.e. oating)
• It is always required to provide all three set values at once. In case any of the set values is not used for adjust-
ment, it can be tied to a dened level or connected to pin VREF (solder bridge or different), so it gives 100%
The analog interface is galvanically separated from DC output. Therefore do not connect any ground of the analog interface to the DC- or DC+ output!
3.5.4.2 Resolution and sample rate
The analog interface is internally sampled and processed by a digital microcontroller. This causes a limited resolution of analog steps. The resolution is the same for set values (VSEL etc.) and actual values (VMON/CMON) and
is 26214. Due to tolerances, the truly achievable resolution can be slightly lower.
There is furthermore a max. sample rate of 500 Hz. It means, the device can acquire analog set values and states
on digital pins 500 times per second.
3.5.4.3 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 3.5.4.4), for example the overvoltage alarm (OV), which is considered as critical.
In case of a device alarm occurring during remote control via analog interface, the DC output will be switched off
the same way as in manual control. While alarms OT and OV can be monitored via the corresponding pins of the
interface, other alarms can’t. Those could only be monitored and detected via the actual values of voltage and
current being all zero contrary to the set values.
All device alarms (OT, OV, PF, OCP and OPP) have to be acknowledged, either by the user of the device or by the
controlling unit. Also see „3.6.2. Device alarm handling“. Acknowledgement is done with pin REM-SB switching
the DC output off and on again, means a HIGH-LOW-HIGH edge (min. 50ms for LOW), when using the default
level setting for this pin.
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PS 9000 1U Series
3.5.4.4 Analog interface specication
Pin Name Type* Description Default levels Electrical specication
1 VSEL AI Set voltage value
2 CSEL AI Set current value
3 VREF AO Reference voltage 10 V or 5 V
4 DGND POT
5 REMOTE DI
Ground for all
digital signals
Switching internal /
remote control
6 OT DO Overheating
7 - - - - -
8 PSEL AI Set power value
9 VMON AO Actual voltage
10 CMON AO Actual current
11 AGND POT
Ground for all
analog signals
12 - - - - -
DC output OFF
13 REM-SB DI
(DC output ON)
(ACK alarms ***)
14 OVP DO Overvoltage alarm
15 CV DO
* AI = Analog Input, AO = Analog Output, DI = Digital Input, DO = Digital Output, POT = Potential
** Internal Vcc approx. 14.3 V *** Only during remote control
**** The error of a set value input adds to the general error of the related value on the DC output of the device
Constant voltage
regulation active
0…10 V or. 0...5 V correspond to 0..100% of U
Nom
0…10 V or. 0...5 V correspond to 0..100% of I
Remote = LOW, U
Internal = HIGH, U
Low
High
Nom
<1 V
>4 V
Internal = Open
Alarm OT= HIGH, U
No Alarm OT= LOW, U
High
> 4 V
Low
V
0…10 V or. 0...5 V correspond to 0..100% von P
0…10 V or. 0...5 V correspond to 0..100% von U
0…10 V or. 0...5 V correspond to 0..100% von I
Off = LOW, U
On= HIGH, U
Low
High
<1 V
>4 V
On = Open
Alarm OV = HIGH, U
No alarm OV = LOW, U
CV = LOW, U
CC/CP = HIGH, U
Low
<1 V
High
High
>4 V
> 4 V
Low
Nom
Nom
Nom
Accuracy 0-5 V range: < 0.4% ****
Accuracy 0-10 V range: < 0.2% ****
Input impedance Ri >40 k...100 k
Tolerance < 0.2% at I
Short-circuit-proof against AGND
For control and status signals.
Voltage range = 0…30 V
I
= -1 mA bei 5 V
Max
U
LOW to HIGH typ.
= 3 V
Rec’d sender: Open collector against DGND
Quasi open collector with pull-up against Vcc **
With 5 V on the pin max. ow +1 mA
<1
I
= -10 mA at U
Max
U
= 30 V
Max
Short-circuit-proof against DGND
CE
Accuracy 0-5 V range: < 0.4% ****
Accuracy 0-10 V range: < 0.2% ****
Input impedance Ri >40 k...100 k
Accuracy < 0.2% at I
Short-circuit-proof against AGND
For -SEL, -MON, VREF Signals
Voltage range = 0…30 V
I
= +1 mA at 5 V
Max
Rec’d sender: Open collector against DGND
Quasi open collector with pull-up against Vcc **
<1 V
With 5 V on the pin max. ow +1 mA
I
= -10 mA at U
Max
Short-circuit-proof against DGND
CE
= +5 mA
max
= 0,3 V
= +2 mA
Max
= 0,3 V, U
Max
= 30 V
The accuracy of set values, as given in the table above, is only related to the input pin and adds
to the general accuracy of the corresponding value on the DC output (see technical specs)
3.5.4.5 Overview of the Sub-D Socket
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3.5.4.6 Simplied diagram of the pins
+
12V
+10V
4.7k
3.5.4.7 Application examples
a) Switching off the DC output via the pin “REM-SB”
Digital Input (DI)
The internal circuit requires that a switch
with low resistance should be used (relay,
switch, circuit breaker etc.) in order to
send a clean signal to the DGND.
A digital output from a circuit or PLC may
not be sufcient if not an “open collector”.
Digital Output (DO)
A quasi open collector, realised as high
resistance pull-up against the internal supply. In condition LOW it can carry no load,
merely switch, as shown in the diagram
with a relay as example.
A digital output, e.g. from a PLC, may be unable to cleanly pull down
the pin as it may not be of low enough resistance. Check the specication of the controlling application. Also see pin diagrams above.
V~0.5
AGND
V~2
AGND
PS 9000 1U Series
Analog Input (AI)
High resistance input (impedance
>40 k....100 kΩ) for an OA circuit.
Analog Output (AO)
Output from an OA circuit, only mini-
mally impedant. See specications
table above.
In remote control, pin REM-SB is be used to switch the DC output of the device on
and off. From KE rmware version 2.03, this is also available without remote control
being active.
It is recommended that a low resistance contact such as a switch, relay or transistor is
used to switch the pin to ground (DGND).
Following situations can occur:
• Remote control has been activated
During remote control via analog interface, only pin “REM-SB” determines the states of the DC output, according
to the levels denitions in 3.5.4.4. The logical function and the default levels can be inverted by a parameter in the
setup menu of the device. See 3.4.3.1.
If the pin is unconnected or the connected contact is open, the pin will be HIGH. With parameter
“Analog interface REM-SB” being set to “normal”, it requests “DC output on”. So when activating
remote control, the DC output will instantly switch on.
• Remote control is not active
In this mode of operation pin “REM-SB” can serve as lock, preventing the DC output from being switched on by
any means. This results in following possible situations:
DCoutput
is off
Pin
+
„REM-SB“
HIGH
+
LOW
HIGH
+
LOW
Parameter
+
„REM-SB“
normal
+
inverted
+
inverted
+
normal
+
Behaviour
DC output not locked. It can be switched on by pushbutton “On/Off”
(front panel) or via command from digital interface.
DC output locked. It can not be switched on by pushbutton “On/Off”
(front panel) or via command from digital interface. When trying to
switch on, a popup in the display resp. an error message will be
generated.
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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:
DC
output
is on
b) Remote control of current and power
Requires remote control to be activated (Pin “Remote” = LOW)
The set values VSEL and CSEL are generated from the reference voltage VREF, using potentiometers for each.
Hence the power supply can selectively work in current limiting or power limiting mode. According to the specication of max. 5 mA for the VREF output, potentiometers of at least 10 kΩ must be used.
The power set value PSEL is always tied to VREF and will thus be permanently 100%.
If the control voltage is fed in from an external source it is necessary to consider the input voltage ranges for set
values (0...5 V oder 0...10 V).
Example with potentiometers Example with external voltage source
Pin
„REM-SB“
HIGH
LOW
HIGH
LOW
Use of the input voltage range 0...5 V for 0...100% set value halves the effective resolution.
Parameter
+
„REM-SB“
normal
+
inverted
+
inverted
+
normal
+
Behaviour
DC output remains on, nothing is locked. It can be switched on
or off by pushbutton or digital command.
DC output will be switched off and locked. Later it can be switched
on again by toggling the pin. During lock, pushbutton or digital
command can delete the request to switch on by pin.
c) Reading actual values
Via the AI, the DC output values of current and voltage can be monitored. They can be read using a standard
multimeter or anything else that records analog signals.
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3.6 Alarms and monitoring
3.6.1 Denition of terms
Device alarms (see „3.3. Alarm conditions“) are dened as conditions like overvoltage or overtemperature, signalled
in any form to the user of the device in order to take notice.
Those alarms are always indicated in the front display as readable abbreviated text, as well as status readable via
digital interface when controlling or just monitoring remotely and, if activated, emitted as audible signal (buzzer).
Furthermore, the most important alarms are also signalled by output pins on the analog interface.
There is furthermore an alarm history available in the submenu “Overview”. It counts alarms that occurred since
the last time the unit was switched on, for statistics and later check.
3.6.2 Device alarm handling
A device alarm incident will usually lead to DC output switch-off. Some alarms must be acknowledged (see below),
which can only happen if the cause of the alarm is not persistent anymore. Other alarms acknowledge themselves
if the cause has vanished, like the OT and the PF alarm.
► How to acknowledge an alarm in the display (during manual control)
1. Push button or once.
► How to acknowledge an alarm on the analog interface (during analog remote control)
1. Switch off the DC output by pulling pin REM-SB to the level that corresponds to “DC output off”, then switch
it on again. See section „3.5.4.7. Application examples“ for levels and logic.
► How to acknowledge an alarm in the alarm buffer/status (during digital control)
1. Read the error buffer (SCPI protocol) or send a specic command to acknowledge, i.e. reset alarms (ModBus).
Some device alarms are congurable by adjusting a threshold:
Alarm Meaning Description Range Indication
Triggers an alarm if the DC output voltage reaches the
OVP
OCP
OPP
OverVoltage
Protection
OverCurrent
Protection
OverPower
Protection
These device alarms can’t be congured and are based on hardware:
Alarm Meaning Description Indication
PF Power Fail
OT
OverTem-
perature
dened threshold. This can be caused by the device
being faulty or by an external source. The DC output
0 V...1.1*U
Nom
will be switched off.
Triggers an alarm if the DC output current reaches the
dened threshold. The DC output will be switched off.
Triggers an alarm if the DC output power reaches the
dened threshold. The DC output will be switched off.
0 A...1.1*I
0 W...1.1*P
Nom
Nom
AC supply over- or undervoltage. Triggers an alarm if the AC supply is out
of specication or when the device is cut from supply, for example when
switching it off with the power switch. The DC output will be switched off.
Triggers an alarm if the internal temperature reaches a certain limit. The
DC output will be switched off.
Display, analog
IF, digital IF
Display, digital
IF
Display, digital
IF
Display, digital
IF
Display, analog
IF, digital IF
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► How to congure the device alarms OVP, OCP and OPP
1. Switch off the DC output and push button to call the setup menu.
2. In the menu navigate to “Settings” and push . Then in the submenu navigate to “Protection” and
push again.
3. Set the limits for the equipment alarm relevant to your application if the default value of 110% of nominal is
unsuitable.
4. Accept the settings with or discard them with .
Those thresholds are reset to defaults when using the function “Reset” in setup menu.
► How to congure the alarm sound
1. Switch off the DC output and push button to call the setup menu.
2. In the menu navigate to “HMI Setup” and push . Then in the submenu navigate to “Alarm Sound”
and push again.
3. In the following screen set parameter “Alarm Sound” to either OFF or ON.
4. Accept the settings with or discard them with .
3.7 Control panel (HMI) lock
In order to avoid the accidental alteration of a value during manual operation the rotary knobs or the key strip
of the control panel (HMI) can be locked so that no alteration will be accepted without prior unlocking. You can
choose between a simple lock and a PIN lock, which requires to enter the correct PIN every time someone wants
to unlock the HMI.
► How to lock the HMI
1. Switch off the DC output and push button to call the setup menu.
2. In the menu navigate to “HMI Setup” and push . Then in the submenu navigate to “HMI Lock” and
push again.
3. Make your selection for parameter “HMI Lock”. With selection “Lock all” everything on the HMI is locked
and you can’t even switch on the DC output. In order to be able to do at least that, use “ON/OFF possible”.
4. The lock is activated as soon as you conrm your selection with . The device will automatically exit the
menu and jump back to normal display with status “Locked” now being indicated.
Alternatively to the procedure above you can also lock the HMI while the DC output is switched on, by accessing
the quick menu. Refer to „3.4.7. The quick menu“.
If an attempt is made to alter something whilst the HMI is locked, a requester appears in the display asking if the
lock should be disabled.
► How to unlock the HMI
1. Rotate any knob or push any button except button On.
2. A request pop-up will appear: .
3. Unlock the HMI by pushing within 5 seconds, otherwise the pop-up will disappear and the HMI remains
locked. In case the HMI lock with PIN has been activated before, you are then requested to enter the correct
PIN, else the HMI will remain locked.
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3.8 Loading and saving a user prole
The menu “Proles” serves to select between a default prole and up to 5 user proles. A prole is a collection of
all settings and set values. Upon delivery, or after a reset, all 6 proles have the same settings and all set values
are 0. If the user changes settings or sets target values then these create a work prole which can be saved to
one of the 5 user proles. These proles or the default one can then be switched. The default prole is read-only.
The purpose of a prole is to load a set of set values, settings limits and monitoring thresholds quickly without
having to readjust these. As all HMI settings are saved in the prole, including language, a prole change can also
be accompanied by a change in HMI language.
On calling up the menu page and selecting a prole the most important settings can be seen, but not changed.
► How to save the current values and settings (work prole ) as a user prole
1. Switch off the DC output and push button to call the
setup menu.
2. In the menu navigate to “Proles” and push .
3. In the submenu (see gure to the right) select a user prole (1-5) to save to and push again.
4. From the selection on screen chose “Save settings into Prole n” and overwrite that prole with the current
settings and values by conrming with .
► How to load a user prole
1. Switch off the DC output and push button to call the
setup menu.
2. In the menu navigate to “Proles” and push .
3. In the submenu (see gure to the right) select a user prole (1-5) to load and push again.
4. In the screen you can now select “View Prole n” in order to check the stored settings and to decide, whether
this prole is going to be loaded or not. Navigate to “Load Prole n” and conrm with to nally load
the prole into the work prole.
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3.9 Other applications
3.9.1 Parallel operation in Share Bus mode
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. To achieve that, the units have to be connected with their DC outputs and their
Share Bus. The Share Bus will balance the units in their internal voltage regulation and thus current regulation,
which will result in a balanced load distribution.
In the parallel operation, a specic unit, a “Share Bus master”, has to be picked as leading unit which drives the
“Share Bus slaves”. The master unit will remain fully controllable, also via analog or digital interface. The slaves,
however, are restricted regarding set value adjustment. Their set values are just limits for the units while it is controlled via the Share Bus. A slave unit still can be controlled remotely, but not like a master unit. All slaves can be
monitored (actual values,status), no matter via analog or digital interface.
The Share Bus only control the process variable U (voltage). It means, the DC outputs of slave
units have to be switched on or off either manually or remotely, which is very easy in analog
remote control, because the related pins REM-SB could simply be connected in parallel, too.
In digital remote control and when using the Ethernet port, all DC outputs could be switched at
the same time by sending broadcast messages.
3.9.1.1 Wiring the DC outputs
The DC output of every unit in the parallel operation is simply connected to the next unit using cables with cross
section according to the maximum current and with short as possible length.
3.9.1.2 Wiring the Share bus
The Share bus is wired from unit to unit with an ideally twisted pair of cables with non-critical cross section. We
recommend to use 0.5 mm² to 1.0 mm².
The Share bus is poled. Take care for correct polarity of the wiring!
A max. of 10 units can be connected via Share bus.
3.9.1.3 Conguring units for Share Bus operation
For correct Share Bus operation in parallel connection, the formerly picked master unit has to be configured as
“Share Bus master”. By default, these power supplies are set as “Share Bus slaves”, so that this configuration step
is not necessary for all slave units.
Only one unit in the Share Bus connection must be congured as Share Bus master, else the
Share Bus won’t work.
► How to configure a device as Share Bus master
1. Switch off the DC output and push button to call the setup menu. Push again to enter sub-
menu “Settings”.
2. In the submenu navigate to “General” and push once again.
3. Use arrow button to navigate to item “Share Bus mode” on the 2nd page and switch to setting “Mas-
ter” by using the right-hand rotary knob.
4. Accept the settings with or discard them with .
3.9.1.4 Operating the Share Bus system
After successful conguration and initialisation of the master and slave units, it is recommended to check all set
values and protection settings of all slaves and possibly adjust to identical values.
The slaves can be controlled manually as usual or remotely via the analog or via digital interfaces, but they don’t
react to set values changes the same way as the master. They can, if needed, be monitored by reading actual
values and status.
The master unit is not restricted and can be used like a stand-alone unit.
Page 46
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PS 9000 1U Series
3.9.1.5 Alarms and other problem situations
Parallel 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 dened:
• If one or more slave units are switched off on the AC side (power switch, supply undervoltage) and come back
later, they’re automatically included again in the system. The remaining units will continue to work without interruption, but the entire system will provide less power
• If the DC output of the master unit is switched off due to a defect or overheating, then the total parallel system
can provide no output power
• If accidentally multiple or no units are dened as master the Share Bus parallel system cannot be initialised
In situations where one or multiple units generate a device alarm like OV, PF or OT following applies:
• Any alarm of a slave is indicated on the slave’s display only
3.9.2 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
• None DC minus pole of any unit in the series connection must have a potential of >400 V
against ground (PE)!
• The Share Bus must not be wired and used!
• Remote sensing must not be used!
• Series connection is only allowed with devices of the same kind and model, i.e. power supply
with power supply, like for example PS 9080-100 1U with PS 9080-100 1U or similar models
like PS/PSI 9080-120 2U
Series connection is not supported by the software and hardware of the device. It means, all units have to controlled
separately regarding set values and DC output status, whether it is manual control or digital remote control. In
remote control, an almost synchronous control can be achieved by using the Ethernet ports and sending message
as broadcast, so they address multiple units at once.
The gure below depicts the exemplary series connection of three identical devices with 200 V nominal output
voltage and the maximum potential shift of any DC- output against PE:
3.9.3 Operation as battery charger
A power supply can be used as a battery charger, but with some restrictions, because it misses a battery supervision and a physical separation from the load in form of a relay or contactor, which is featured with some real battery
chargers as a protection.
Following has to be considered:
• No false polarity protection inside! Connecting a battery with false polarity will damage the power supply severely,
even if it is not powered.
• All models of this series have an internal circuit, i.e. base load, for faster discharge of voltage when switching the
DC output off or ramping voltage down. This base load would, more or less slowly, discharge the battery while
the DC output is switched off, means while it is not charging. This would, however, not occur when the power
supply is not powered at all. It is thus recommended to leave the DC output switched on as long as the battery
is connected (equals to trickle charge) and only switch if off for connecting/disconnecting a battery.
EPS Stromversorgung GmbH
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Germany
Fon: +49 821 / 570451-0
Fax: +49 821 / 570451-25
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Page 47
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PS 9000 1U Series
3.9.4 Two quadrants operation (2QO)
3.9.4.1 Introduction
This way of operating refers to the use of a source, in this case a power supply
of series PS 9000 1U, and a sink, in this case an electronic load of a compatible
series (see „1.9.5. Share Bus-Connection“). The source and the sink function
alternatingly in order to test a device, such as a battery, by deliberately charging
and discharging it as part of a functional or nal test.
The user can decide whether the system is operated manually or the power
supply only as the dominant unit or both devices should be controlled by PC.
We recommend to focus on the power supply, which is intended to control the
load via the Share Bus connection. The two quadrants operation is only suitable
for constant voltage operation (CV).
Clarication:
U+
III
I-
III
3.9.4.2 Connecting devices to a 2QO
There are a number of possibilities to connect source(s) and sink(s) to make a 2QO:
IV
U-
E-LOAD PSU
Share-Bus
E.U.T
I+
A combination of source and sink can only map the quadrants
I + II. This means that only positive voltages are possible. The
positive current is generated by the source or application and
the negative current ows into the load..
The maximum approved limits for the application should be set
in the power supply. This can be done via the interface. The
electronic load should preferably be in operating mode CV. The
load will then, using the Share Bus, control the output voltage
of the power supply.
Typical applications:
• Fuel cells
• Capacitor tests
• Motor driven applications
• Electronic tests where a high dynamic discharge is required.
Conguration A:
1 e-load and 1 power supply, plus 1 test object (E.U.T).
This is he most common conguration for 2QO. The nominal
values for U,I and P of the two devices should match as close
as possible, for instance EL 9080-170 B and PS 9080-100
1U. The system is controlled by the power supply, which has
to be set to “Master” for parameter “Share bus mode” in the
setup menu.
PSU n
SB
E-LOAD PSU 1
Share-Bus
E.U.T
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Conguration B:
1 e-load and multiple power supplies, plus 1 test object
Master-Slave
(E.U.T).
For adapting the total power of the power supply device to
the possibly higher input power of the load, the power supplies are connected via Master-Slave and the load’s current
is shared across the power supplies when wiring the Share
bus to gain a balanced load distribution.
One PSU, preferably PSU 1, has to be set to Master for the
Share bus connection.
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PS 9000 1U Series
3.9.4.3 Settings on the devices
The master-slave settings in the MENU of the load device(s) 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, depending on if there is digital master-slave in use or not. For the one load that is master (setting:
MASTER) in the master-slave system the additional parameter “PSI/ELR system” resp. “PSI/EL system” has to
be activated.
On any of the power supplies, you need set parameter “Share bus mode” to MASTER. Also see 3.4.3.1.
For safety of the connected E.U.T / D.U.T and to prevent damage, we recommend to adjust supervision thresholds
like OVP, OCP or OPP on all units to the desired levels, which will then switch off the DC output resp. the DC input
in case of excess.
3.9.4.4 Restrictions
After all electronic load slaves have been connected to the Share bus with one power supply as master, they cannot limit their input voltage anymore to what you adjust as “U set” on the device. The correct voltage level comes
from the master unit and has to be adjusted there.
3.9.4.5 Application example
Charging and discharging a battery with 24 V/100 Ah, using conguration A from above.
• Power supply PS 9080-100 1U with: I
• Electronic load EL 9080-170 B set to: I
probably UVD = 20 V with event type “Alarm” to stop discharging at a certain low voltage threshold
• Assumption: battery has a voltage of 26 V at test start
• DC input(s) and DC output(s) of all units switched off
= 10 A (charging current, 1/10 of rated capacity), P
Set
= max. discharging current of the battery (eg. 50 A), P
Set
= 3000 W
Set
= 2400 W, plus
Set
In this combination of devices it is recommended to always switch on the DC output of the
source rst and then the DC input of the sink.
1. Discharge of the battery to 24 V
Setup: Voltage on the power supply set to 24 V, DC output of power supply and DC input of load activated
Reaction: the e-load will load the battery with a maximum current of 50 A in order to discharge it to 24 V. The power
supply delivers no current at this moment, because the battery voltage is still higher than what is adjusted on the
power supply. The load will gradually reduce the input current in order to maintain the battery voltage at 24 V. Once
the battery voltage has reached 24 V with a discharge current of approx. 0 A, the voltage will be maintained at this
level by charging from the power supply.
The power supply determines the voltage setting of the load via the Share bus. In order to avoid
deep discharge of the battery due to accidentally setting the voltage on the power to a very low
value, it is recommended to congure the undervoltage detection feature (UVD) of the load, so
it will switch off the DC input when reaching minimum allowed discharge voltage. The settings
of the load, as given via the Share bus, can’t be read from the load’s display.
2. Charging the battery to 27 V
Setup: Voltage on the power supply set to 27 V
Reaction: the power supply will charge the battery with a maximum current of 10 A, which will gradually reduce
with increasing voltage as a reaction to the changing internal resistance of the battery. The load absorbs no current
at this charging phase, because it is controlled via the Share bus and set to a certain voltage, which is still higher
than the actual battery voltage and the actual output voltage of the power supply. When reaching 27 V, the power
supply will deliver only the current needed to maintain the battery voltage.
EPS Stromversorgung GmbH
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Germany
Fon: +49 821 / 570451-0
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Page 49
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PS 9000 1U Series
4. Service & maintenance
4.1 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. Heavily dirt lled fans can lead to insufcient airow and therefore the DC output would switch off too
early due to overheating or possibly lead to defects.
Cleaning the internal fans can be performed with a vacuum cleaner or similar. For this the device needs to be opened.
4.2 Fault nding / diagnosis / repair
If the equipment suddenly performs in an unexpected way, which indicates a fault, or it has an obvious defect, this
can not and must not be repaired by the user. 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 the supplier (with or without guarantee). If a return for
checking or repair is to be carried out, ensure that:
• the supplier has been contacted and it is claried how and where the equipment should be sent.
• the device is in fully assembled state and in suitable transport packaging, ideally the original packaging.
• a fault description in as much detail as possible is attached.
• if shipping destination is abroad, the necessary customs papers are attached.
4.2.1 Replacing a defect mains fuse
The device is protected by one fusible (T16 A, 250 V, 35 mm) which is located inside the device.
This fusible should only blow due to a defect in the AC input circuit, but could also blow when running the unit at
extremely low AC supply voltage. It can be replaced for testing purposes, in order to nd out whether it is only
blown and nothing else is damaged or if there is a true defect, which cannot be repaired on location.
The device has a warranty seal which would break when opening the unit, so we recommend to contact us rst in
such a case during warranty period. According to the situation and problem description, we will decide what to do.
After warranty period it is allowed to open the unit at will and on your own risk. This is done by pulling the AC cord
rst, then removing all screws for the top cover (5 x screw each on left and right side, plus 1 x screw at the rear).
It is imperative to replace the fuse only with one of same type and values.
4.2.2 Firmware update
Firmware updates should only be installed when they can eliminate existing bugs in the
rmware in the device or contain new features.
The rmware of the control panel (HMI), of the communication unit (KE) and the digital controller (DR), if necessary, is updated via the rear side USB port. For this the software “EPS Power Control” is needed which is included
with the device or available as download from our website, together with the rmware update, or upon request.
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Page 51
PS 9000 1U Series
4.3 Calibration (readjustment)
4.3.1 Preface
The devices of series PS 9000 1U feature a function to readjust the most important output values when doing
a calibration 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. value. There are several reasons which could make it necessary
to readjust a unit: component aging, component deterioration, extreme ambient conditions, high frequent use
In order to determine if a value is out of tolerance, the parameter must be veried rst with measurement tools of
high accuracy and with at least half the error of the PS device. Only then a comparison between values displayed
on the PS device and true DC output values is possible.
For example, if you want to verify and possibly readjust the output current of model PS 9080-100 1U which has
100 A maximum current, stated with a max. error of 0.2%, you can only do that by using a high current shunt with
max. 0.1% error or less. Also, when measuring such high currents, it is recommended to keep the process short,
in order to avoid the shunt heating up too much. It is furthermore recommended to use a shunt with at least 25%
reserve.
When measuring the current with a shunt, the measurement error of the multimeter on the shunt adds to the error
of the shunt and the sum of both must not exceed the max. error of the device under calibration.
4.3.2 Preparation
For a successful calibration and readjustment, a few tools and certain ambient conditions are required:
• A measurement device (multimeter) for voltage, with a max. error of half the PS’s voltage error. That measurement device can also be used to measure the shunt voltage when readjusting the current
• If the current is also going to be calibrated: a suitable DC current shunt, ideally specied for at least 1.25 times the
max. output current of the PS and with a max. error that is half or less than the max. current error of the PS device
• Normal ambient temperature of approx. 20-25°C
• Warmed up PS unit, which has been run for at least 10 minutes under 50% power
• An adjustable load, such as an electronic load, which is capable of consuming at least 102% of the max. voltage
and current of the PS device
Before you can start calibrating, a few measures have to be taken:
• Let the PS device warm up in connection with the voltage / current source
• In case the remote sensing input is going to be calibrated, prepare a cable for the remote sensing connector to
DC output, but leave it yet unconnected
• Abort any form of remote control, deactivate master-slave mode, set device to U/I mode
• Install the shunt between PS device and load and make sure the shunt is cooled somehow
• Connect external measurement device to the DC output or to the shunt, depending on whether the voltage is
going to be calibrated rst or the current
4.3.3 Calibration procedure
After the preparation, the device is ready to be calibrated. From now on, a certain sequence of parameter calibration is important. Generally, you don’t need to calibrate all three parameters, but it is recommended to do so.
Important:
When calibrating the output voltage, the remote input “Sense” on the rear of the device has to
be disconnected.
The calibration procedure, as explained below, is an example with model PS 9080-100 1U. Other models are
treated the same way, with values according to the particular PS model and the required load.
EPS Stromversorgung GmbH
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PS 9000 1U Series
4.3.3.1 Set values
► How to calibrate the DC output voltage
1. Connect a multimeter to the DC output. Connect a load and
set it to approx. 5% of the nominal current of the power supply
as load current, in this example let’s use 4 A.
2. Enter the setup menu with , then push . In the submenu navigate to “Calibration” using the
arrow buttons. In the next screen select “Voltage” and then “Output value” and conrm with . The
power supply will then switch the DC output on.
3. In the next screen the device will set a certain output voltage and start to measure it (U-mon). Simply con-
rm here with .
4. After this, the device requests you to enter the measured output voltage from the multimeter at Measured
value:. Enter it using the right-hand rotary knob, just like would adjust a set value. Assure yourself the value
is correct and submit with .
5. Repeat steps 3. and 4. for the next three calibration steps (total of four steps).
Should the externally measured value be too different from the internally measured value (U-mon), then the calibration procedure will fail and the parameter can not be readjusted by the user.
► How to calibrate the DC output current
1. Set the load to approx. 102% nominal current of the PS device, for the sample model with 100 A this would
be 102 A.
2. Enter the setup menu with , then push . In the submenu navigate to “Calibration” .using the
arrow buttons. In the next screen select “Current” and then “Output value” and conrm with . The
power supply will then switch the DC output on.
3. In the next screen the device will set a certain current limit, being loaded by the load or sink, and start to
measure the output current (I-mon). Simply conrm here with .
4. After this, the device requests you to enter the output current, which you are measuring with the shunt, at
Measured value:. Enter it using the right-hand rotary knob, just like would adjust a set value. Assure yourself
the value is correct and submit with .
5. Repeat steps 3. and 4. for the next three calibration steps (total of four steps).
Should the externally measured value be too different from the internally measured value (I-mon), then the calibration procedure will fail.
In case you are generally using the remote sensing feature, it is recommended to also readjust this parameter
for best results. The procedure is identical to the calibration of voltage, except for it requires to have the sensing
connector (Sense) on the rear to be plugged and connected with correct polarity to the DC output of the PS.
► How to calibrate the DC output voltage for remote sensing
1. Connect a load and set it to approx. 3% of the nominal current of the power supply as load current, in this
example ~3 A. Connect the remote sensing input (Sense) to the load with correct polarity.
2. Put external multimeter in DC connection on the load.
3. Enter the setup menu with , then push . In the submenu navigate to “Calibration”. Push
again. In the next screen select “Sense volt.” then “Output value“and conrm twice with . The power
supply will then switch the DC output on.
4. In the next screen the device will set a certain output voltage and start to measure it (U-mon). Simply con-
rm here with .
5. After this, the device requests you to enter the measured sensing voltage from the multimeter at Measured
value:. Enter it using the right-hand rotary knob, just like would adjust a set value. Assure yourself the value
is correct and submit with .
6. Repeat steps 4. and 5. for the next three calibration steps (total of four steps).
Page 52
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PS 9000 1U Series
4.3.3.2 Actual values
Actual values of output voltage (with and without remote sensing) and output current are calibrated almost the
same way as the set values, but here you don’t need to enter anything, just conrm the displayed values. Please
proceed the above steps and instead of “Output value” select “Actual value” in the submenus. After the device
shows measured values on display, wait at least 2s for measured value to settle and then simply conrm with
, until you are through all steps.
4.3.3.3 Saving calibration data
After calibration you can furthermore enter the current date. To do so, navigate to menu item “Cal. date” and enter
the date in format YYYY / MM / DD and submit with .
Last but not least save the calibration data permanently conrming menu item “Save & exit” with .
Leaving the calibration selection menu without saving via “Save & exit” will discard
calibration data and the procedure would have to be repeated!
5. Contact and support
5.1 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. No RMA number is needed. It is sufcient 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.
5.2 Contact options
Questions or problems with operation of the device, use of optional components, with the documentation or software, can be addressed to technical support either by telephone or e-Mail.
Address e-Mail Telephone
EPS Stromversorgung GmbH
Alter Postweg 101
86159 Augsburg
Germany
Technical support:
support@elektroautomatik.de
All other issues:
info@eps-germany.de
Switchboard: +49 821 / 570451-0
EPS Stromversorgung GmbH
Alter Postweg 101 • 86159 Augsburg
Germany
Fon: +49 821 / 570451-0
Fax: +49 821 / 570451-25
www.eps-germany.de
info@eps-germany.de
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