janitza UMG 103 Service manual

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Doc No. 1.036.019.g
Power Analyser
UMG 103
Installation and Putting into Service
Product No. 33.03.071
Janitza electronics GmbH
Vor dem Polstück 1
D-35633 Lahnau
Support tel. [phone]
Fax [phone]
E-mail: [email protected]
Internet: http://www.janitza.com
www.janitza.com

2
UMG 103
General Information 4
Copyright 4
Protected trademarks 4
Liability disclaimer 4
Comments on the manual 4
Meaning of the symbols used 5
Inspection on receipt 6
Scope of supply 7
Available accessories 7
Notes on Use 8
Product Description 10
Intended use 10
Features 11
Operating concept 12
GridVis programming software 12
Installation 14
Installed position 14
Power supply voltage 15
Voltage measurement 16
Current measurement 18
Ammeter 19
Direct measurement 19
RS485 interface 22
What to do in case of errors 24
Service and maintenance 26
Repair and calibration 26
Front film 26
Firmware update 26
Service 26
Technical specifications 28
Transport and storage 28
Ambient conditions during operation 28
General information 28
RS485 interface 29
Measurement uncertainty 30
Measurement 32
Voltage measurement 32
Current measurement 32

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UMG 103
Appendix 33
Declaration of conformity 33
Dimensioned drawings 34
UMG103 connection example 35
Measuring-circuit and power supply voltage 35
Current measurement 35
Quick Reference Instructions 36
Device address 36
LED display 36

4
UMG 103
General Information
Copyright
This manual is subject to the statutory copyright protection provisions and may
not be photocopied, reprinted, reproduced as a whole or in parts, by mechanical
or electronic means, nor copied or further published in any other way whatsoever
without the legally binding, written consent of
Janitza electronics GmbH,
Vor dem Polstück 1,
D 35633 Lahnau,
Germany.
Protected trademarks
All trademarks and their resulting rights belong to the respective holders of these
rights.
Liability disclaimer
Janitza electronics GmbH does not accept any responsibility whatsoever for errors
or deficiencies within this manual and does not undertake any obligation to keep
the content of this manual up to date.
Comments on the manual
We welcome your comments. If anything in this manual seems unclear to you,
please let us know by sending an eMail to: [email protected]

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UMG 103
m
c
Meaning of the symbols used
The following pictograms are used in this manual:
Dangerous voltage!
Danger or risk of severe injury.
Disconnect the system and
device from the power supply
before starting the work.
PE (protective earth) terminal.
Important!
Please note and follow the
documentation. This symbol
is intended to warn you of pos-
sible hazards that can occur
during installation, starting up
and use.

6
UMG 103
m
m
m
The installation and start-up
instructions also describe options
which do not belong to the scope
of supply.
Inspection on receipt
Fault free and safe use of this device requires appropriate transport, proper storage,
erection and assembly as well as careful operation and maintenance. If it can be
assumed that safe operation is no longer possible, the device must be immediately
taken out of service and secured against being accidentally started up.
The device must be unpacked and packed with the usual care, without the use
of force and only using suitable tools. The devices must be visually inspected for
perfect mechanical condition. Please also note and follow the installation instructions
enclosed with the device.
It can be assumed that safe operation is no longer possible if the device, e.g.
• has visible damage,
• no longer works, despite intact mains power supply,
• has been exposed to unfavourable conditions (e.g. storage outside the permissible
climatic limits without adjustment to the ambient climate, condensation, or similar)
for a lengthy period or was exposed to unfavourable effects or loads during
transport (e.g. fall from a large height even if there is no visible external damage,
or similar).
Please check the scope of supply for completeness before you start installing the
device.
All screw-type terminals
belonging to the scope of supply
are plugged into the device.
All supplied options and design
versions are described on the
delivery note.

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UMG 103
Scope of supply
Product No. Name
18 08 094 RS485, external terminating resistor, 120 Ohm
1) Refer to delivery note for product number.
2) Design version.
Available accessories
Number Product No. Name
1 52 18 xxx1) UMG103 XX2)
1 33 03 071 Installation and start-up instructions.
1 51 00 116 CD with the following content:
- “GridVis” programming software,
- Functional description,
- Supplementary device descriptions.
1 1001818 Plug-in screw-type terminal, 2-pin.
1 1001819 Plug-in screw-type terminal, 4-pin.
1 1001820 Plug-in screw-type terminal, 6-pin.

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UMG 103
Notes on Use
Please read these operating instructions and all other publications which have to
be used to work with this product (in particular for installation, operation or main-
tenance).
Note and follow all safety instructions as well as any warnings. If you do not follow the
instructions, personal injuries and/or damage to the product could be the result.
Any unauthorised change or use of this device which extends beyond the given
mechanical, electrical or other operating limits can cause personal injuries and/or
damage to the product.
Any such unauthorised change is “misuse” and/or “negligence” under the prod-
uct's warranty and therefore excludes the warranty for cover of possible resulting
injuries or damage.
This device may be solely operated and maintained by skilled persons.
Skilled persons are people who, on the basis of their relevant training and experi-
ence, are capable of identifying risks and avoiding possible hazards which operation
or maintenance of the device can cause.
When using the device, any additional legal and safety regulations required for the
respective use must be observed.

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UMG 103
mc
m
Important!
If the device is not operated
according to the instruction
manual, protection is no longer
ensured and the device can
cause hazards.
Conductors with soldered in-
dividual wires are not suitable
for connection to screw-type
terminals.
Only pluggable screw terminals
with the same number of poles
(pins) and of the same type may
be plugged together.
m
The UMG103 is programmed
and read out via RS485 inter-
face only.

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UMG 103
Product Description
Intended use
The UMG103 is intended to be used for the measurement and calculation of
electrical variables such as voltage, current, power, work, harmonic components,
etc. in building installations, at distribution boards, circuit-breakers and busbar
trunking systems.
The UMG103 is permanently installed in control cabinets or small distribution
boards. It can be installed in any position. The measurement results can be read
out via the RS485 interface.
The UMG103 draws its power supply voltage from the measuring-circuit voltage.
The UMG103 is designed for operation in low-voltage distribution systems, in which
overvoltage category III (300 V) impulse voltages can occur.
The UMG103 can measure L-N voltages of up to 240 V and short-term overvoltages
up to 300 Vrms.
The current measurement inputs of the UMG103 are connected via external ../1A
or ../5A current transformers.
The UMG103 is only conditionally suitable for measurements in medium and
high-voltage distribution systems, as it draws the power supply voltage from the
measuring-circuit voltage and therefore loads the voltage transformer with a non-
linear current. Special safety provisions are to be applied to the measurements in
medium and high-voltage distribution systems, which are not dealt with here.
The UMG103 fulfils the test requirements for use in industrial areas.
The UMG103 bridges power failures of max 80 ms with a mains voltage of
230 V AC.
The UMG103 saves all min-, max-, energy values as well as runtime counters in a
non-volatile memory approximately every 5 minutes.
The refresh time of the measured values depends on the set net frequency (at 50Hz:
200ms; at 60Hz: 167ms).