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Heinzinger electronic GmbH

Phone: +49 (0) 8031 2458 0

www.heinzinger.com

Anton-Jakob-Str. 4, 83026 Rosenheim

Fax: + 49 (0) 8031 2458 58

[email protected]

Germany

Page 84

ERS COMPACT

3.11.5

Sine wave function

Restrictions which apply particularly to this function:

•

There is no preselection to which of both, source mode and sink mode, the function is applied; the settings decide

whether it’s “source mode only”, “sink mode only” or a mixture of both

•

When applying the function to the voltage, the device can only switch to and work in sink mode if the external

voltage on the DC terminal is higher than the highest point ( amplitude) of the wave and the current

setting “I Sink” is not 0

The following parameters can be configured for a sine function:

Parameter

Range

Description

Frequency (f) 1...10000 Hz

Static frequency of the signal to be generated

Amplitude (A) 0...(rated value - |O|) of U or I

Amplitude of the signal to be generated

Offset (O)

0... (U

Nom

- A)

Offset from the zero point of the mathematical sine curve

- (I

Nom

- A)...+(I

Nom

- A)

Schematic diagram:

Application and result:

fse

U,I

-I

itud

A sine wave signal is generated and applied to the selected set

value, e.g. the current (I mode). Depending on the adjusted pa

rameters the device can apply the wave either solely to sink mode

or to source mode, but also to both with automatic switchover

at zero point. The scheme on the left depicts the “mixed mode”

run (yellow = source mode active, green = sink mode active).

While the amplitude is always an absolute value, the offset can

be positive or negative (I mode only).

For calculating the maximum power the current amplitude and

the offset value have to be added.
Example: a voltage of 100 V is set. The parameters for the sin(I)

function are: amplitude of 80 A and offset of +50 A. The resulting

maximum power when reaching the highest point of the sine wave

then is (80 A + 50 A) * 100 V = 13000 W for the source part and

when reaching the lowest point (sink part) it will be (50.A - 80 A)

* 100 V = -3000 W.

3.11.6

Triangular function

Restrictions which apply particularly to this function:

•

There is no preselection to which of both, source mode and sink mode, the function is applied; the settings decide

whether it’s “source mode only”, “sink mode only” or a mixture of both

•

When applying the function to the voltage, the device can only switch to and work in sink mode if the external

voltage on the DC terminal is higher than the highest point ( amplitude) of the wave and the current

setting “I Sink” is not 0

The following parameters can be configured for a triangular function:

Parameter

Range

Description

Amplitude (A) 0...(rated value - |Offs|) of U or I

Amplitude of the signal to be generated

Offset (O)

0... (U

Nom

- A)

Offset, based on the foot of the triangular wave

- (I

Nom

- A)...+(I

Nom

- A)

Time t1

0.1 ms...36,000,000 ms

Rising edge time Δt of the triangular wave signal

Time t2

0.1 ms...36,000,000 ms

Falling edge time Δt of the triangular wave signal

Содержание ERS Compact Series

Страница 1: ...www heinzinger com Betriebsanleitung User Manual Bidirectional Power Supply System Heinzinger ERS Compact Series...

Страница 2: ...ore installation and use 36 2 3 2 Preparation 36 2 3 3 Installing the device 39 2 3 4 Connection to water supply WC models 40 2 3 5 Connection to AC supply 42 2 3 6 Connection to DC loads or DC source...

Страница 3: ...nction 85 3 11 8 Trapezoidal function 86 3 11 9 DIN 40839 function 86 3 11 10 Arbitrary function 87 3 11 11 Ramp function 91 3 11 12 IU table function XY table 92 3 11 13 Simple PV photovoltaics funct...

Страница 4: ...Heinzinger electronic GmbH Phone 49 0 8031 2458 0 www heinzinger com Anton Jakob Str 4 83026 Rosenheim Fax 49 0 8031 2458 58 info heinzinger de Germany Page 4 ERS COMPACT...

Страница 5: ...eneral 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...

Страница 6: ...able voltage and current source or only as a variable current sink Typical application for a voltage source is DC power supply to any relevant user including when used as battery charger to test charg...

Страница 7: ...ntended 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 liq...

Страница 8: ...rk 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 pro...

Страница 9: ...s of the preset limit Non critical protects the load or source from excessive power consumption Signal PF Power Fail DC terminal shutdown due to AC undervoltage or defect in the AC section Critical on...

Страница 10: ...2 A Overpower protection range 0 33000 W 0 33000 W 0 33000 W Temperature coefficient K Voltage set values current set values 100 ppm Capacitance approx 25380 F 25380 F 5400 F Voltage regulation genera...

Страница 11: ...ing WC Water IP20 Ambient temperature 0 50 C 32 133 F Storage temperature 20 70 C 4 158 F Humidity 80 not condensing Standards EN 61010 1 2007 11 EN 50160 2011 02 EN 61000 6 2 2016 05 EN 61000 6 3 201...

Страница 12: ...Max 5 UNom Max 5 UNom Voltage regulation power supply Load regulation at 0 100 IOUT 0 05 UNom 0 05 UNom 0 05 UNom Rise time 10 90 UOUT Max 30 ms Max 30 ms Max 30 ms Transient time after IOUT 1 5 ms 1...

Страница 13: ...Cooling WC Water IP20 Ambient temperature 0 50 C 32 133 F Storage temperature 20 70 C 4 158 F Humidity 80 not condensing Standards EN 61010 1 2007 11 EN 50160 2011 02 EN 61000 6 2 2016 05 EN 61000 6 3...

Страница 14: ...x 5 UNom Max 5 UNom Voltage regulation power supply Load regulation at 0 100 IOUT 0 05 UNom 0 05 UNom 0 05 UNom Rise time 10 90 UOUT Max 30 ms Max 30 ms Max 30 ms Transient time after IOUT 1 5 ms 1 5...

Страница 15: ...Cooling WC Water IP20 Ambient temperature 0 50 C 32 133 F Storage temperature 20 70 C 4 158 F Humidity 80 not condensing Standards EN 61010 1 2007 11 EN 50160 2011 02 EN 61000 6 2 2016 05 EN 61000 6 3...

Страница 16: ...V ERSC 200 420 US208V AC supply Voltage range L L 187 228 V AC Connection 3ph PE DC terminal Max power PMax 15000 W 15000 W 15000 W Overpower protection 0 16500 W 0 16500 W 0 16500 W Power regulation...

Страница 17: ...Phone 49 0 8031 2458 0 www heinzinger com Anton Jakob Str 4 83026 Rosenheim Fax 49 0 8031 2458 58 info heinzinger de Germany Page 17 ERS COMPACT A Power switch B Control panel Figure 1 Front view sta...

Страница 18: ...nger electronic GmbH Phone 49 0 8031 2458 0 www heinzinger com Anton Jakob Str 4 83026 Rosenheim Fax 49 0 8031 2458 58 info heinzinger de Germany Page 18 ERS COMPACT Figure 2 Front view water cooled v...

Страница 19: ...nzinger electronic GmbH Phone 49 0 8031 2458 0 www heinzinger com Anton Jakob Str 4 83026 Rosenheim Fax 49 0 8031 2458 58 info heinzinger de Germany Page 19 ERS COMPACT Figure 3 Front view Slave versi...

Страница 20: ...83026 Rosenheim Fax 49 0 8031 2458 58 info heinzinger de Germany Page 20 ERS COMPACT C Control interfaces digital analog F Share Bus connectors J AC plug D Master slave bus ports G DC terminal type 1...

Страница 21: ...tronic GmbH Phone 49 0 8031 2458 0 www heinzinger com Anton Jakob Str 4 83026 Rosenheim Fax 49 0 8031 2458 58 info heinzinger de Germany Page 21 ERS COMPACT Figure 5 Rear view water cooled version K W...

Страница 22: ...inzinger electronic GmbH Phone 49 0 8031 2458 0 www heinzinger com Anton Jakob Str 4 83026 Rosenheim Fax 49 0 8031 2458 58 info heinzinger de Germany Page 22 ERS COMPACT Figure 6 Rear view Slave versi...

Страница 23: ...Heinzinger electronic GmbH Phone 49 0 8031 2458 0 www heinzinger com Anton Jakob Str 4 83026 Rosenheim Fax 49 0 8031 2458 58 info heinzinger de Germany Page 23 ERS COMPACT Figure 7 Side view...

Страница 24: ...49 0 8031 2458 0 www heinzinger com Anton Jakob Str 4 83026 Rosenheim Fax 49 0 8031 2458 58 info heinzinger de Germany Page 24 ERS COMPACT Figure 8 Top view example of a standard model with DC termina...

Страница 25: ...can be operated with the fingers or with a stylus 2 Rotary knob with push button function Left knob turn voltage set value adjustment Left knob push shift the decimal position cursor of the voltage s...

Страница 26: ...e module For a detailed description see section 1 9 7 The control panel Slave models 1 On Off button Can be used to switch the DC terminal on or off during manual operation while LED Remote is off 2 U...

Страница 27: ...on the rear side as well as a galvanically isolated analog interface Via optional plug in interface modules other digital interfaces such as for RS232 Profibus ProfiNet ModBus TCP CAN CANopen or Ether...

Страница 28: ...nd the programming of the device using those interfaces can be found in separate documentation It s usually available on the USB stick which is included with the device or as PDF download on the manuf...

Страница 29: ...t Additional status Status area Actual current display Current set value input Touch area for rotary knob assignment DC terminal status Actual power display Power set value input Indicator source sink...

Страница 30: ...he device has been locked by the user explicitly against remote control Alarm Alarm condition which has not been acknowledged or still exists Event A user defined event has occurred which is not yet a...

Страница 31: ...1 A MS 1000 kW 5 0 1 kW 1000 5 0 1 750 V 4 0 1 V MS 10000 A 5 1 A 1000 V 5 0 1 V MS Master slave 1 9 6 5 USB port front side The frontal USB port located to the right of the rotary knobs is intended f...

Страница 32: ...erent and or additional to log data of normal USB logging is recorded 3 11 16 7 mpp_result_ nr csv Result data from MPP tracking mode 4 in form of a table with 100 data groups Umpp Impp Pmpp 3 11 17 6...

Страница 33: ...ice would regulate it to the last values it has stored Since all the DC terminal related values aren t displayed operating that button has to be done with caution 1 9 8 USB port rear side The USB port...

Страница 34: ...obtained from us or electronics stores Share bus operation requires to connect only identical device models Follow ing power supply and electronic load series are compatible on this Share bus ERSC 100...

Страница 35: ...e automatically detecting the type of message The network setup can be done manually or by DHCP Transmission speed and duplex mode are on automatic mode If remote control is in operation the Ethernet...

Страница 36: ...mpleteness 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 operati...

Страница 37: ...ination 2 One ERSC 10000 with one or multiple ERSC 10000 Slave This is the intended combination for models of ERSC 10000 Slave series Advantage of this combination lower costs Disadvantage of this com...

Страница 38: ...ic grid The devices can t work without this functionality The goal is to consume the recovered energy completely in the local power grid of a company or plant In case it can occur that more energy is...

Страница 39: ...with lockable doors or by applying further measures additional cover etc A device in a 19 chassis will usually be mounted on suitable rails and installed in 19 racks or cabinets The depth of the devic...

Страница 40: ...talled and running there is one primary value left to supervise permanently the so called dew point Depending on the temperature of water on the intake in combination with the humidity of ambient air...

Страница 41: ...54 4 56 3 58 3 59 8 61 4 63 1 67 F 44 3 47 49 6 52 54 1 56 1 58 1 59 9 61 6 63 3 64 8 68 F 46 48 8 51 3 53 6 55 8 58 59 9 61 7 63 4 65 1 66 6 70 F 47 5 50 4 52 9 55 3 57 6 59 7 61 6 63 4 65 2 66 7 68...

Страница 42: ...0 480 V No matter what particular version the device is standard WC or Slave the ratedAC supply voltage on the type label is important The models for 380 400 480 V use a regular three phase supply wit...

Страница 43: ...PE conductor is imperative and must always be wired The N conductor if present in the cable can be wired to the free slot on the AC plug For the wiring cross section the power of the device and the ca...

Страница 44: ...e grid current see schematic below and this can lead to an overload of the existing electric installation Considering any two outlets no matter of what kind they are there is usually no extra fusing i...

Страница 45: ...and average ambient temperature up to 30 C 86 F we recommend up to 40 A 6 mm up to 60 A 16 mm up to 80 A 25 mm up to 120 A 35 mm up to 180 A 70 mm up to 240 A 2x 35 mm up to 420 A 2x 95 mm up to 1000...

Страница 46: ...dation for cables up to 5 m 16 4 ft use at least 0 5 mm Sense cables shouldn t be twisted but laid close to the DC cables i e Sense cable close to DC cable to the load etc to damp or avoid possible os...

Страница 47: ...lot cover is mounted in order to avoid internal dirtying of the device and changes in the air flow standard models with air cooling Installation steps 1 2 3 Remove the slot cover If need ed use a scre...

Страница 48: ...Class CDC device and is usually integrated in current operating systems such as Windows 7 or 10 But it s strongly recommended to use and install the included driver installer on USB stick to gain max...

Страница 49: ...ng 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 op...

Страница 50: ...active the condition CC mode active will be indicated on the graphics display by the abbreviation CC and this message will be passed as a signal to the analog interface as well stored as status which...

Страница 51: ...a natural characteristic The load attempts to set the internal resistance to the user defined value by determining the input current depending on the input voltage according to formula IIN UIN RSET wh...

Страница 52: ...cs and stability criteria When working in sink mode the device becomes an electronic load which is characterized by short rise and fall times of the current which are achieved by a high bandwidth of t...

Страница 53: ...ce can automatically switch the DC terminal back on depending on the setting of parameter DC Terminal State after OT alarm Also see section 3 5 3 1 for more information The alarm will remain in the di...

Страница 54: ...alarm can t be acknowledged the usual way It requires to pow er cycle the unit During normal operation of the power supply this alarm should not trigger There are however situations which can trigger...

Страница 55: ...either on or off All set values are always saved and restored For the time of the start phase the analog interface can signal undefined statuses on its digital outputs This must be ignored until the d...

Страница 56: ...ource mode and 3 5 6 Manual adjustment of set values standard models Analog interface Range Selects the voltage range for the analog set values actual values and reference voltage output 0 5 V Range i...

Страница 57: ...pin 10 CMON voltage on pin 9 VMON Actual current EL Pin 10 only signals the actual current in sink mode EL Actual current PS Pin 10 only signals the actual current in source mode PS Mode A Current of...

Страница 58: ...where the display isn t supposed to be permanently on It s identical to the setting in menu HMI setup Initialize system Tapping this touch area will repeat the initialization of the master slave syst...

Страница 59: ...ta packets using higher values In group Protocols you can disable one of the two supported communication protocols ModBus and SCPI This can help to avoid mixing both protocols and to receive unreadabl...

Страница 60: ...re a subnet mask can be defined if the default subnet mask is not suitable Gateway Here a gateway address can be allocated if required DNS address Here the addresses of the first and second Domain Nam...

Страница 61: ...of status from the adjusted Base ID Cyclic Read Range 20 5000 ms Default 0 ms deactivated Cyclic Read Time Set PS Activation deactivation and time setting for the cyclic read of set values of U I sour...

Страница 62: ...Interface monitoring Default values off 5 s Range 5 65535 Protocols Communication protocols Enables or disables SCPI or ModBus communication protocols for the device The change is immediately effectiv...

Страница 63: ...s 8000 W then the set value first would have to be reduced to 6000 W or less in order to set P max down to 6000 W 3 5 5 Changing the operating mode In general the manual operation of the device distin...

Страница 64: ...mity to the adjusted value How to adjust set values U I P or R with the rotary knobs 1 First check if the value you want to change is already assigned to one of the rotary knobs The main screen displa...

Страница 65: ...he USB stick and the generated log files refer to section 1 9 6 5 USB port front side The logging stores files of CSV format on the stick where the layout of the log data is the same as when logging v...

Страница 66: ...R set and R actual are only recorded if R mode is active refer to section 3 5 5 Unlike the logging on PC every log start here creates a new log file with a counter in the file name starting generally...

Страница 67: ...iction of the temporal run of the actual values of voltage current and power called the graph It isn t a recording feature whatsoever For data recording in the background there is still the USB loggin...

Страница 68: ...the status Local will be displayed top right Activating the inhibit can be useful if the device is remotely controlled by software or some electronic device but it s required to make adjustments at th...

Страница 69: ...ands can be found in the document Programming guide ModBus SCPI CLS SOURce POWer PROTection LEVel ESE SOURce POWer PROTection LEVel ESE SOURce RESistance ESR SOURce RESistance IDN SOURce RESistance LI...

Страница 70: ...ng Interface monitoring is a configurable functionality introduced in firmwares KE 2 06 and HMI 2 08 Its goal is to monitor or supervise the communication line between the device and a superior contro...

Страница 71: ...l configured for the default see section 3 5 3 Configuration via the menu All set values are always additionally limited to the corresponding adjustment limits U max I max etc which would clip setting...

Страница 72: ...between manual and remote control Remote LOW ULow 1 V Manual HIGH UHigh 4 V Manual if pin not wired Voltage range 0 30 V IMax 1 mA at 5 V ULOW to HIGH typ 3 V Rec d sender Open collector against DGND...

Страница 73: ...an t drive any load only sink small current as shown in the diagram with a relay as example V 2 AGND Analog Output AO Output from an operation amplifier circuit low impedance See specifi cations table...

Страница 74: ...can be switched on or off by pushbutton or digital command LOW Inverted HIGH Inverted The DC terminal will be switched off and locked Later it can be switched on again by toggling the pin During lock...

Страница 75: ...r from external If the voltage set value becomes lower than the actual voltage the device will switch to source mode e Determining the actual operation mode between source and sink The limited number...

Страница 76: ...Device alarm and event handling Important to know When switching the DC input sink mode of the device off while a current limited source still supplies energy the output voltage of the source can ris...

Страница 77: ...aces Safety OVP Safety OverVoltage Protection Only featured with the 60 V models Triggers a special OVP alarm in case the voltage on the DC terminal exceeds the rigid threshold of 101 rated voltage Th...

Страница 78: ...ds the defined threshold 0 A INom OPD OverPower Detection Triggers an event if the DC power exceeds the defined threshold 0 W PNom These events shall not be confused with alarms such as OT and OVP whi...

Страница 79: ...p up will disappear and the HMI remains locked In case the additional PIN code lock has been activated in the Lock screen another re quester will pop up asking you to enter the PIN before it finally u...

Страница 80: ...including language a profile change can also be accompanied by a change in HMI language On calling up the menu page and selecting a profile the most important settings can be seen but not changed How...

Страница 81: ...stick loadable current curve table CSV PV FC Functions to simulate a solar panel PV function or fuel cells FC function both with table calculation based upon adjustable parameters also for EN 50530 B...

Страница 82: ...re then constants and have a limiting effect That means if for example a voltage of 100 V is set in source mode for the DC output a load is connected and a sine wave function should operate on the cur...

Страница 83: ...nction exclusively in sink or in source mode it s recommended to set the set values I P of the opposite mode to 0 The global limits of U I and P become instantly active when coming to the main screen...

Страница 84: ...t The scheme on the left depicts the mixed mode run yellow source mode active green sink mode active While the amplitude is always an absolute value the offset can be positive or negative I mode only...

Страница 85: ...d work in sink mode if the external voltage on the DC terminal is higher than the highest point offset amplitude of the wave and the current setting I Sink is not 0 The following parameters can be con...

Страница 86: ...ble time values With suitable settings the trapezium can be deformed to two triangular or two rectangular pulses It has therefore universal use 3 11 9 DIN 40839 function This function is based on the...

Страница 87: ...equency is shaped between start and end When both start frequency and end frequency are 0 Hz the AC overlay has no impact and only the DC part is effective Each sequence point is allocated a sequence...

Страница 88: ...ves to be created For instance with f 1 Hz and time 3 s three full waves would be generated if the angle is 0 and reciprocally the same for f 3 s and time 1 s Start DC t U I Start AC End AC Seq time E...

Страница 89: ...I Example 7 Focusing 2 cycles of 1 sequence point One sequence point configured as in example 3 is run Since the settings define that the end offset DC is higher than the start the second run will re...

Страница 90: ...Column Connected to HMI parameter Range A AC start See table in 3 11 10 Arbitrary function B AC end See table in 3 11 10 Arbitrary function C Start frequency 0 10000 Hz D End frequency 0 10000 Hz E A...

Страница 91: ...wave and the current setting I Sink is not 0 The following parameters can be configured for a ramp function Parameter Range Description Start End 0 UNom or INom INom Start end point of the ramp Both v...

Страница 92: ...B stick that is formatted in FAT32 In order to load the file it has to meet following specifications The file name always begins with IU not case sensitive The file must be a text file of type Excel C...

Страница 93: ...oblems Check the technical specifications of the solar inverter and probably contact the inverter s manufacturer for an evaluation 3 11 13 3 Usage In the PV function which is based upon the XY generat...

Страница 94: ...started when the user switches the DC output on Irradiance 0 100 U I Uoc MPP From the main function generator screen you can go back to the first screen of PV table function and use a for merly locke...

Страница 95: ...he curve to be calculated Points 2 3 I 0 A INom Point 4 Isc 0 A INom Maximum output current of the fuel cell short circuit situation U 0 V UNom Global voltage limit should be Uoc P 0 W PNom Global pow...

Страница 96: ...ed This section only deals about configuration and control of the PV simulation 3 11 15 2 Differences to the basic PV function The extended PV function has five additional or different characteristics...

Страница 97: ...between two succeeding curve points Hence it should be considered to run the day trend with or without interpolation The day curve points have to be loaded into the device either from a CSV file on US...

Страница 98: ...n use such small steps in voltage or current may not be doable However the device would try to set the first intermediate step with 75 0138 V and 18 0027 A 3 11 15 7 Data recording There is the option...

Страница 99: ...an result in a PV curve which doesn t work as expected When resetting the device these values are reset to defaults which are the same as with technology cSI Also see the overview in 3 11 15 3 It mean...

Страница 100: ...t by the rotary knobs because with every step of the knob the curve would be re calculated The screen example on the right shows simulation mode E T In case any of the day trend modes would have been...

Страница 101: ...read from the device via digital interface partly or completely or stored to USB stick This can serve to verify the adjusted parameters When running mode DAY E T or DAY U I this makes less sense beca...

Страница 102: ...For a projected CR operation it s similar Current and power should then be set to maximum For Dynamic discharge mode there is also a power setting but it can t be used to run the dynamic battery test...

Страница 103: ...Charge end current 0 INom Current threshold in Ampere upon which the charging would stop 3 11 16 4 Settings for the dynamic test mode The following parameters can be configured for the dynamic test ba...

Страница 104: ...onfiguration of all test modes there is the option to enable the USB logging feature With a USB stick plugged and formatted as required see 1 9 6 5 the device can record data during the test run direc...

Страница 105: ...lightly above UOC ISC is used as a upper limit for the current so the device would not try to draw more current than the panel is spec ified for Following parameters can be configured for tracking mod...

Страница 106: ...tage values then track this curve measure current and power and return the results in up to 100 sets of acquired data The curve points can only be loaded from a USB stick Start and end point can be ad...

Страница 107: ...are always set to max Format of the result data file for naming convention see section 1 9 6 5 Legend Column A actual voltage of points 1 100 UMPP Column B actual current of points 1 100 IMPP Column...

Страница 108: ...ause DC minus is the reference for the Share bus Principle view without load or source Share bus connection Master slave bus 3 12 1 1 Restrictions Compared to normal operation of a single device maste...

Страница 109: ...t is going to be used the Share bus must be connected as well How to connect the digital master slave bus 1 Switch off all units and connect the master slave bus with network cables CAT3 or better cab...

Страница 110: ...unit will reconfigure after initialization and all set values are reset The master now dis plays the set and actual values of the total system Depending on the number of units the adjustable current a...

Страница 111: ...master unit is cut from AC supply power switch blackout and comes back later the unit will automati cally initialize the MS system again finding and integrating all active slaves In this case MS can...

Страница 112: ...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 s clarified how and where the equipment should be sent the...

Страница 113: ...th 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 d...

Страница 114: ...he manufacturer No RMA number is needed It s sufficient to package the equipment adequately and send it together with a detailed description of the fault and if still under guarantee a copy of the inv...

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