Omicron CMC 356 User manual

CMC 356
User Manual

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Article Number VESD2003 - Version CMC356.AE.4
© OMICRON electronics. All rights reserved.
This manual is a publication of OMICRON electronics.
All rights including translation reserved. Reproduction of any kind, e.g., photocopying, microfilming, optical
character recognition and/or storage in electronic data processing systems, requires the explicit consent of
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Reprinting, wholly or in part, is not permitted. The product information, specifications, and technical data
embodied in this manual represent the technical status at the time of writing and are subject to change without
prior notice.
We have done our best to ensure that the information given in this manual is useful, accurate and entirely
reliable. However, OMICRON electronics does not assume responsibility for any inaccuracies which may be
present.
The user is responsible for every application that makes use of an OMICRON product.
OMICRON electronics translates this manual from the source language English into a number of other
languages. Any translation of this manual is done for local requirements, and in the event of a dispute between
the English and a non-English version, the English version of this manual shall govern.

Table of Contents
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TABLE OF CONTENTS
Preface...................................................................................................................... 7
Safety Instructions .................................................................................................. 8
1 Designated Use ............................................................................................ 11
2 Introduction .................................................................................................. 12
2.1 Options Available for the CMC 356 Test Set................................................................. 12
3 Operating the CMC 356 ............................................................................... 13
3.1 System Components ..................................................................................................... 13
3.2 Safe Use of the Connecting Cables ............................................................................... 14
3.2.1 Test Lead Adapter for Non-Safety Sockets ....................................................... 14
3.3 Regular Test Leads for Safety Sockets .......................................................................... 15
3.3.1 Terminal adapters.............................................................................................. 15
3.3.2 M4 (0.15") Cable Lug Adapters ......................................................................... 16
3.3.3 M5 (0.20") Cable Lug Adapters ......................................................................... 16
3.4 Starting the Test System ................................................................................................ 17
4 Setup and Function ..................................................................................... 19
4.1 Block Diagram ............................................................................................................... 20
4.1.1 Voltage Output (Voltage Amplifier) .................................................................... 21
4.1.2 Current Output (Current Amplifier)..................................................................... 22
4.1.3 Binary / Analog Input (Binary Inputs 1 - 10)....................................................... 23
4.1.4 Binary Output..................................................................................................... 23
4.1.5 AUX DC (DC Power for Test Objects) ............................................................... 24
4.1.6 CPU ................................................................................................................... 25
4.1.7 Power Supplies (DC-DC)................................................................................... 25
4.2 Signal Generation.......................................................................................................... 25
4.2.1 Accuracy and Signal Quality.............................................................................. 26
5 Connections and Interfaces ........................................................................ 27
5.1 Front Panel Connections ............................................................................................... 27
5.1.1 Generator Combination Socket for VOLTAGE OUTPUT and CURRENT
OUTPUT ............................................................................................................ 30

CMC 356 Reference Manual
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5.2 Connections on the Back Panel .................................................................................... 32
5.2.1 Ethernet Ports ETH1 and ETH2 ........................................................................ 32
5.2.2 ! Button .............................................................................................................. 33
5.2.3 Associate Button................................................................................................ 33
5.2.4 Status LED A, B................................................................................................. 34
5.2.5 Ethernet / Network Settings ............................................................................... 34
5.2.6 SELV Interfaces................................................................................................. 36
5.2.6.1 External Interface ("ext. Interf.") ......................................................... 36
5.2.6.2 LL out 1-6 (Low Level Outputs 1-6) .................................................... 37
5.2.6.3 LL out 7-12 (Low Level Outputs 7-12) - Option "LLO-2"..................... 37
6 Technical Data .............................................................................................. 39
6.1 Main Power Supply........................................................................................................ 39
6.2 Insulation Coordination.................................................................................................. 40
6.3 Outputs .......................................................................................................................... 41
6.3.1 Extended Frequency Range .............................................................................. 42
6.3.2 Current Outputs ................................................................................................. 43
6.3.3 Voltage Outputs ................................................................................................. 48
6.3.3.1 Power Diagram for Three-Phase Operation ....................................... 49
6.3.3.2 Power Diagram for Single-Phase Operation ...................................... 50
6.3.4 Operational Limits in Conjunction with Mains Supply ........................................ 51
6.3.5 Low Level Outputs "LL out" for External Amplifiers ........................................... 52
6.3.6 Low-Level Binary Outputs ("ext. Interf.")............................................................ 54
6.3.7 Binary Output Relays......................................................................................... 56
6.3.8 DC Supply (AUX DC)......................................................................................... 57
6.4 Inputs.............................................................................................................................. 58
6.4.1 Binary Inputs...................................................................................................... 58
6.4.2 Counter Inputs 100 kHz (Low Level) ................................................................. 61
6.5 Technical Data of the Ethernet Ports.............................................................................. 63
6.5.1 The NET-1B Board ............................................................................................ 63
6.5.2 The NET-1 Board............................................................................................... 64
6.6 Environmental Conditions............................................................................................... 65
6.6.1 Climate............................................................................................................... 65
6.6.2 Shock and Vibration........................................................................................... 65
6.7 Mechanical Data............................................................................................................ 65
6.8 Cleaning ........................................................................................................................ 65
6.9 Safety Standards, Electromagnetic Compatibility (EMC) and Certificates ..................... 66
6.10 Option ELT-1 ................................................................................................................. 67

Table of Contents
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6.10.1 General Data ..................................................................................................... 68
6.10.2 Analog DC Input (VDC, IDC) ............................................................................. 69
6.10.3 Accuracy of the Analog DC Input....................................................................... 70
6.10.4 Measuring Currents ........................................................................................... 71
6.10.5 Accuracy of Binary/Analog Inputs with Option ELT-1 ........................................ 72
6.10.6 Multimeter Mode ................................................................................................ 73
6.10.6.1 Accuracy of AC Measurements .......................................................... 74
6.10.6.2 Channel Cross-Talk............................................................................ 76
6.10.6.3 Accuracy of Phase Measurement....................................................... 77
6.10.6.4 Accuracy of Frequency Measurement................................................ 79
6.10.6.5 Accuracy of Power Measurement....................................................... 80
6.10.7 Harmonic Analysis ............................................................................................. 84
6.10.7.1 Accuracy of Frequency Measurement................................................ 85
6.10.7.2 Accuracy of Amplitude Measurement................................................. 86
6.10.7.3 Accuracy of Phase Measurement....................................................... 87
6.10.8 Transient Recording .......................................................................................... 88
6.10.9 Trend Recording ................................................................................................ 89
6.11 Option LLO-2 (Low Level Outputs)................................................................................. 90
7 Increasing the Output Power, Operating Modes ....................................... 91
7.1 Safety Instructions for High Current Output................................................................... 91
7.2 Single-Phase Operation of the CMC 356 ...................................................................... 92
7.2.1 1 x 32 A High Burden Mode (L-L-L-L)................................................................ 92
7.2.2 1 x 64 A High Burden and High Current Mode (L-L).......................................... 93
7.2.3 1 x 128 A High Current Mode (LL-LN) ............................................................... 94
7.2.4 Single-Phase Voltage ........................................................................................ 95
7.3 Two-Phase Operation..................................................................................................... 96
7.3.1 2 x 64 A High Current Mode (LL-LN) ................................................................. 96
7.3.2 2 x 32 A High Burden Mode (L-L) ...................................................................... 97
7.4 Three-Phase Current Mode with High Burden ............................................................... 98
7.5 Operation with External Amplifiers ................................................................................. 99
8 Troubleshooting ......................................................................................... 101
8.1 Troubleshooting Guide ................................................................................................ 101
8.2 Potential Errors, Possible Causes, Remedies............................................................. 102
8.3 Overheating .................................................................................................................. 103

CMC 356 Reference Manual
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9 CMC 356-Related Products and Accessories ......................................... 105
9.1 CMA Current Amplifiers & CMS Voltage Amplifiers .................................................... 105
9.2 CMControl-6 ................................................................................................................. 106
9.3 Time Synchronization Accessories............................................................................... 107
9.3.1 CMGPS............................................................................................................ 107
9.3.2 CMIRIG-B ........................................................................................................ 109
9.4 100TX to 100FX-SC Converter .................................................................................... 111
9.5 Current Clamp C-PROBE1........................................................................................... 112
9.6 Accessories for Meter Testing ...................................................................................... 113
9.6.1 Scanning Head OSH256 ................................................................................. 113
9.6.2 Interface Box IFB256 ....................................................................................... 114
9.6.3 Scanning Head TK 326.................................................................................... 115
9.6.4 Scanning Head TVS 6.15/1 ............................................................................. 116
9.6.5 Adapter Cable for Scanning Heads ................................................................. 117
9.6.6 CMLIB B .......................................................................................................... 118
9.6.7 CMLIB A .......................................................................................................... 119
9.6.8 CPOL Polarity Tester....................................................................................... 120
9.6.9 Connection Cable for REF 54x Relays (ABB) with Low Level Signal Inputs ... 121
9.6.10 C-Shunt............................................................................................................ 122
9.7 Wiring Accessories ....................................................................................................... 123
9.7.1 Standard Delivery Scope ................................................................................. 123
9.7.2 Optional CMC Wiring Accessory Package ...................................................... 124
9.8 Ordering Information..................................................................................................... 127
Appendix .............................................................................................................. 133
Contact Information / Technical Support ...........................................................137
Index ..................................................................................................................... 139

Preface
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PREFACE
The purpose of this reference manual is to familiarize users with the
CMC 356 test set and to show how to properly use it in various application
areas.
The manual contains important tips on how to use the CMC 356 safely,
properly, and efficiently. Its purpose is to help you avoid danger, repair
costs, and down time as well as to help maintain the reliability and life of the
CMC 356.
This manual is to be supplemented by existing national safety standards for
accident prevention and environmental protection.
The reference manual should always be available at the site where the
CMC 356 is used. It should be read by all personnel operating the test set.
Note: The OMICRON Test Universe software also installs a PDF version of
this reference manual. It can directly be opened by a mouse-click from the
help topic "User Manuals of OMICRON Test Universe".
In addition to the reference manual and the applicable safety regulations in
the country and at the site of operation, the usual technical procedures for
safe and competent work should be heeded.
Note: This reference manual describes the CMC 356 hardware - that is, the
physical test set. In order to get familiar with the software for controlling and
configuring the CMC 356, please refer to the software manuals and/or the
OMICRON Test Universe Help.
For Your Safety Please Note
The CMC 356 test set can output life-hazardous voltages and currents.
Throughout the manual, this symbol indicates special safety-relevant
notes/directions linked to the possibility of touching live voltages and/or
currents. Please thoroughly read and follow those directions to avoid life-
hazardous situations.
This symbol indicates potential hazards by electrical voltages/currents
caused by, for example, wrong connections, short-circuits, technically
inadequate or faulty equipment or by disregarding the safety notes of the
following sections.

CMC 356 Reference Manual
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SAFETY INSTRUCTIONS
Before operating the CMC 356 test set, carefully read the following
safety instructions.
Only operate (or even turn on) the CMC 356 after you have read this
reference manual and fully understood the instructions herein.
The CMC 356 may only be operated by trained personnel. Any
maloperation can result in damage to property or persons.
Rules for Use
•TheCMC 356 should only be used when in a technically sound
condition. Its use should be in accordance with the safety regulations for
the specific job site and application. Always be aware of the dangers of
the high voltages and currents associated with this equipment. Pay
attention to the information provided in the reference manual and the
software documentation.
•TheCMC 356 is exclusively intended for the application areas specified
in section 1, "Designated Use" on page 11. The manufacturer/
distributors are not liable for damage resulting from unintended usage.
The user alone assumes all responsibility and risk.
• The instructions provided in this reference manual and the associated
software manuals are considered part of the rules governing proper
usage.
• Do not open the CMC 356 or remove any of its housing components.
Orderly Practices and Procedures
• The reference manual (or its "electronic PDF pendant", which is installed
to your computer with the OMICRON Test Universe software) should
always be available on site where the CMC 356 is used.
Note: The OMICRON Test Universe software also installs a PDF version
of this reference manual. It can directly be opened by a mouse-click from
the help topic "User Manuals of OMICRON Test Universe". The
Test Universe Help can be launched by clicking Help on the Start Page.
• Personnel assigned to using the CMC 356 must have read this reference
manual and fully understood the instructions herein.
• Do not carry out any modifications, extensions or adaptations at the
CMC 356.

Safety Instructions
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Operator Qualifications
• Testing with the CMC 356 should only be carried out by authorized and
qualified personnel.
• Personnel receiving training, instruction, direction, or education on the
CMC 356 should remain under the constant supervision of an
experienced operator while working with the equipment.
Safe Operation Procedures
• Follow the instructions in sections 3.2 and 3.4 that describe the safe use
of the connecting cables and how to set the CMC 356 into operation.
•TheCMC 356 must only be used from a power outlet that has a
protective earth.
• Do not block the access to safety-relevant test set components like the
main power switch or the power cord. In cases of an emergency, these
components need free and quick access.
• Do not connect any of the front panel VOLTAGE/CURRENT OUTPUTS
1 ... 3 or VOLTAGE OUTPUT 4, respectively, to protective earth. The N
sockets, however, may be connected to protective earth.
• When connecting to the banana plug sockets, only use cables with
4 mm/0.16 " safety banana connectors and plastic housing. Always
insert plugs completely.
• Before connecting and disconnecting test objects, verify that all outputs
have been turned off. Never connect or disconnect a test object while the
outputs are active.
• When disconnecting power supply cables or test leads, always start from
the device feeding the power or signal.
• All sockets on the front panel are to be considered dangerous with
working voltages up to 300 Vrms. Only use cables that meet these
respective requirements to connect to the equipment.
• Red Signal Light :
If the voltage on any of the four voltage outputs or on the "AUX DC"
output exceeds 42 V, the associated signal light lights up.
• Do not insert objects (e.g., screwdrivers, etc.) into the sockets or into the
ventilation slots.
• Do not operate the CMC 356 under wet or moist conditions
(condensation).

CMC 356 Reference Manual
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• Do not operate the CMC 356 when explosive gas or vapors are present.
• The SELV interface (SELV = Safety Extra Low Voltage) of the CMC 356 -
"Host Interf." or “ETH1”, "LL out" (Low Level Outputs), "ext. Interf." -
should only have external devices connected that meet the requirements
for SELV equipment according to EN 60950 or IEC 60950.
• For applications drawing DC current: The load may not exceed 3 mH
because of dangerous feedback current.
• When setting up the CMC 356, make sure that the air slots on the back,
top, and bottom of the test set remain unobstructed.
• Voltages up to 1 kV can be present inside the CMC 356! Therefore,
opening the CMC 356 is only permitted by qualified experts either at the
factory or at certified external repair centers.
•IftheCMC 356 is opened by the customer, all guarantees are
invalidated.
•CMC 356 Ethernet functionality (see section 5.2.1, "Ethernet Ports ETH1
and ETH2" on page 32):
- It is a product of laser class 1 (EN 60825, IEC 60825).
- Connect ETH1 only to Ethernet ports.
•IftheCMC 356 seems to be functioning improperly, please contact the
OMICRON Tecnical Support (see section "Contact Information /
Technical Support" on page 137).
Changing the Power Fuse
• Unplug the power cord between the test set and the power source.
• The fuse is located at the back of the test set.
• Fuse type: T12.5 AH 250 V (wire fuse 5 × 20 mm).
For safety reasons please use only fuse types recommended by the
manufacturer. Refer to 6.1, "Main Power Supply" on page 39 for more
information.