LEM ITZ FLEX ULTRASTAB User manual

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ITZ FLEX ULTRASTAB
USER GUIDE

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TABLE OF CONTENTS
TABLE OF CONTENTS .......................................................................................................................... 2
LIST OF FIGURES .................................................................................................................................. 3
LIST OF TABLES .................................................................................................................................... 3
DOCUMENT INFORMATION.................................................................................................................. 3
INTRODUCTION ..................................................................................................................................... 4
RECEIVING AND UNPACKING.............................................................................................................. 6
GENERAL SPECIFICATIONS FOR RACK ELECTRONICS.................................................................. 7
1Compliance with regulations............................................................................................................ 8
2Usage precautions and recommendations...................................................................................... 9
2.1 Terms and symbols ................................................................................................................. 9
2.2 General use and wear ............................................................................................................. 9
2.3 Grounding considerations........................................................................................................ 9
2.4 Fuses ....................................................................................................................................... 9
2.5 Precautions for use................................................................................................................10
3Quick start...................................................................................................................................... 11
3.1 System overview ................................................................................................................... 11
3.2 Setting up............................................................................................................................... 12
4Introduction .................................................................................................................................... 14
4.1 Main features ......................................................................................................................... 14
4.2 Standard transducer heads ................................................................................................... 14
4.3 Custom transducer heads ..................................................................................................... 15
4.4 Voltage output module........................................................................................................... 15
4.5 Current conversion ratio and programmability ......................................................................15
4.6 Front ...................................................................................................................................... 17
4.7 Rear ....................................................................................................................................... 18
4.8 Transducer head ................................................................................................................... 19
5Installation...................................................................................................................................... 20
5.1 Mounting requirements for the electronics unit .....................................................................20
5.2 Mounting requirements for the transducer heads..................................................................20
5.3 Grounding the transducer head.............................................................................................21
5.4 Installation.............................................................................................................................. 21
6Offset adjustment .......................................................................................................................... 22
6.1 Adjusting the current offset....................................................................................................22
7. I/0-ports.......................................................................................................................................... 23
7.1 Analog Out connector ............................................................................................................ 23
7.2 4 mm “Banana” Current Output terminals ............................................................................. 23
7.3 Status/Interlock connector ..................................................................................................... 24
8Absolute maximum ratings ............................................................................................................ 26
9Sweep function during overload status ......................................................................................... 26
10 Thermal protection..................................................................................................................... 26
11 Over current protection - Electrical specifications .....................................................................26
12 Transducer head connector....................................................................................................... 28
13 Operating instructions................................................................................................................28
13.1 Switching on power ............................................................................................................... 28
13.2 Using the ITZ FLEX ULTRASTAB in current mode...............................................................28
13.3 Connecting directly to a current measuring device ...............................................................29
13.4 Connecting to an external burden resistor (current output)...................................................30
13.5 Connecting the ITZ FLEX ULTRASTAB to a DMM or high impedance amplifier (voltage
output) 30
14 Theory of operation ................................................................................................................... 31
14.1 Basic principle of ITZ FLEX ULTRASTAB current transducers ...........................................31
15 Maintenance .............................................................................................................................. 32

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LIST OF FIGURES
Figure 1: System overview for Current Output ...................................................................................... 11
Figure 2: System overview for Voltage Output...................................................................................... 11
Figure 3: Front panel of electronics rack ...............................................................................................17
Figure 4: Back panel of electronic rack ................................................................................................. 18
Figure 5: Analog out connector pinout ..................................................................................................23
Figure 6: Wiring schematics to current measuring device ....................................................................29
Figure 7: Wiring schematics to external burden resistor .......................................................................30
Figure 8: Wiring schematics to high impedance load............................................................................ 30
Figure 9: Block diagram showing the zero flux detector principle......................................................... 31
LIST OF TABLES
Table 1: General specifications for rack electronics................................................................................ 7
DOCUMENT INFORMATION
05.01.2012 Creation of user manual
Version: 0
06.02.2013 Replaced Manual title by user guide
title (page 1) + Replaced LEM Danfisik by LEM
Switzerland + Added picture page 11
Modified some pictures
Version: 1
28.05.2014 Updated completely according to the
datasheets
Version: 2

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INTRODUCTION
Congratulations with your purchase of LEM ITZ FLEX ULTRASTAB.
The ITZ FLEX ULTRASTAB system provides a flexible yet user-friendly platform for
use in laboratory, test facility and industrial applications where the highest
performance flux-gate current sensing is needed. The platform offers full-scale
current sensing from 600 A and up to 24000 A by utilizing a broad range of
compatible current measuring heads.
Please read this user guide carefully before use. It contains information on how to set
up and use the ITZ FLEX ULTRASTAB and how to build an ultrahigh precision
system. In case of unanswered questions do not hesitate to contact either LEM
Switzerland S.A. or our local distributor directly.
IMPORTANT: LEM Switzerland S.A. will not be held responsible for use of the ITZ FLEX
ULTRASTAB unit under conditions and/or in application setups not supported by the information in
this user guide.

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WARRANTY STATEMENT

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RECEIVING AND UNPACKING
The shipping material and the ITZ FLEX ULTRASTAB should be thoroughly
inspected for signs of obvious physical damage immediately upon receipt.
All materials in the package should be checked against the enclosed packing list and
the list of standard delivery below. LEM Switzerland S.A. will not be responsible for
any shortages unless notified no later than 14 days after receiving.
The LEM ITZ FLEX ULTRASTAB package should contain:
•19 inch rack-mount ITZ FLEX ULTRASTAB electronics
•Transducer head – depending on nominal current range
•European (Schuko) and US mains cable with three-pin IEC female connector
•Cable for connecting head and rack electronics
•Analog output cable
•Current short-plug and analog out short-plug
•Final manufacturing test check-list.
IN CASE OF DAMAGE
If the equipment is damaged in any way, a claim should be filed with the shipping
agent, and a full report of the damage should be forwarded to LEM Switzerland S.A.
or our local representative immediately upon receiving.
Upon receipt of this report, LEM Switzerland S.A. will forward instructions concerning
the repair, replacement or return shipment.
Please include the Type No., Serial No., and Order No. for the ITZ FLEX
ULTRASTAB on any communication with LEM Switzerland S.A. or our local
representative.

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GENERAL SPECIFICATIONS FOR RACK ELECTRONICS
Electrical Data – MAINS INPUT
Mains Input
100-240 V AC, 50/60 Hz
IEC-type inlet socket
Fuses
2.5 AT / 240 V AC
Internal fuses, not user-
replaceable
Electrical data – ANALOG OUTPUT PORT
Full-scale output current
±1 A (± 2 or ± 3 A)
-S and –SB versions
Full-scale output voltage
± 10 V
-SB versions
Output impedance
< 1 Ohm
-SB versions
Electrical data – STATUS/INTERLOCK PORT
Max collector-emitter
voltage, off-state
60 V
Max reverse collector-
emitter voltage, off-state
5 V
Max collector-emitter
current, on-state
10 mA
On-state saturation
collector-emitter voltage
< 0.2 V
Physical data – Electronics rack
Dimensions
482x88x430 mm
WxHxD, including handles and
connectors
Weight
8.4 kg (9.2-10.0kg)
Value for 600-5000 A systems
(10 kA/16 kA–24 kA systems)
Operating conditions
Temperature
10 .. 40 °C
Relative humidity
20 .. 80 % RH
Cooling
Internal fan
Storage conditions
Temperature
-20 .. 85 °C
Relative humidity
20 .. 80 % RH
Table 1: General specifications for rack electronics

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1 Compliance with regulations
FCC statement
This equipment complies with the limits for a Class A digital device, pursuant
to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference in which case the user will
be required to correct the interference at his own expense.
CE statement
This product has been tested and found to comply with the following
standards.
Electrical safety: IEC/EN 61010-1
Electromagnetic Compatibility:
Emission: IEC/EN 61326-1:2006
FCC 47 CFR Part 15
Immunity: IEC/EN 61326-1:2006
A technical file is kept available at:
LEM Switzerland S.A.
Chemin des Aulx 8
P.O. Box 35
1228 PLAN-LES-OUATES
Geneva, Switzerland

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2 Usage precautions and recommendations
The following precautions are recommended to insure your safety and to
provide the best operating conditions of this instrument. If this equipment is
used in a manner not specified by the manufacturer, the protection provided
by the equipment may be impaired.
2.1 Terms and symbols
These terms and symbols may appear in this manual or on the product.
2.2 General use and wear
CAUTION: Do not place any heavy objects on the instrument.
Avoid severe impacts or rough handling that could damage the instrument.
Use electrostatic discharge precautions while handling and making connections to the
instrument.
Do not place bare or unterminated wires into the connectors of the instrument, only
mating connectors and adapters.
Do not block or obstruct the ventilation openings on the side panels and over the heat
sink.
2.3 Grounding considerations
To avoid the risk of electrical shock it is mandatory to observe proper
grounding practices.
WARNING: To avoid electrical shock the power cord protective grounding
conductor must be connected to earth ground.
All transducer heads must be connected to earth ground as described in section
5.3.
Failure to establish a functional ground connection to earth may lead to
hazardous errors and cause malfunction and/or measurement inaccuracies.
2.4 Fuses
WARNING: The unit has no user replaceable fuses. In the event that fuses need
replacement please consult your local LEM Sales representative. Please include Type
and Serial no. with all communication with LEM Switzerland or the local representative.
!
WARNING: Warning statement identifying condition or practices that
could result in human injury or loss of life.
!
CAUTION: Caution statement identifying conditions or practices that
could result in damage to the product.
DANGER: High Voltages.
Protective Ground Conductor Terminal.
!
!
!

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2.5 Precautions for use
Due to the nature of the zero-flux based transducer principle it is necessary to
take the following precautions:
CAUTION: Do not subject the system to primary current without mains power applied.
CAUTION: Do not operate the system with a disconnected secondary when the system
is subject to primary current.
!
!