janitza UMG 503 Operating Instructions Manual

Universal Measuring Device

UMG 503

Operating instructions

Doc. No.: 1.016.033.r Series IV SW. Rel.: 3.xxx

Janitza electronics GmbH

Vor dem Polstück 1
D-35633 Lahnau
Support Tel. [phone]
Fax [phone]
e-mail: [e-mail]
Internet: http://www.janitza.de

Mean value

Displayed phase,

- Outer conductor against N,

- Phase to phase,

- Sum measurement.

Peak values
Lowest values
Mark for the selected ring
buffer values

Consumption
Delivery

Key 1

Indication of operation
mode
Key 3
Key 2

Current transformers
Harmonic number/Tariff
number
Voltage transformer

Device address

Page 2 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

All rights reserved. No part of this manual may be
reproduced or duplicated without the written permission
of the author. Any contraventions are punishable and will
be prosecuted with all legal means.

No liability can be taken for the faultless condition of the
manual or damage caused by the use of it. As failures
cannot be avoided completely, we shall be very grateful
for any advice. We will try to remove any failures as soon
as possible. The mentioned software and hardware
descriptions are registered trademarks in the most cases
and are subjected to the regulations by law. All registered
trademarks are property of the corresponding companies
and are fully recognized by us.

Page 3= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Page 4 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Table of contents

Meaning of the symbols 6

Generals 7

Receipt control 7
Hints for usage 7
Hints for maintenance 8

Repairing and calibration 8
Face plate 8
Battery 8
Waste management 8

Service 8

Product description 9

Intended use 9
Functional description 9

Putting into service 10

Auxiliary voltage 10
Measuring voltage 10
Testing current 10
RS485 Interface cable 10

Putting into service 14

Removal of errors 15

Usage 17

Keys 17

Edit 17
Special functions 17

Main menu 17

Measured value indication 18

Retrievable meas. and calculated quantities 18

Calling up additional information 22
Mean values 22
Minimum and maximum values 23
Energy determination 24
Real power EMAX 25
EMAX- monthly- peak values 25
Reset of the measuring period 26
Current meas. without measuring voltage 27

Harmonics 27

Total harmonic distortion factor THD(f) 27
Partial harmonics 27

Programming 28

Delete real and reactive energy 28

Delete via keyboard 28
Delete via serial interface 28

Delete highest and lowest values 29

Delete all minimum and max. values 29
Delete min. and max. values separately 30

Ring buffer 31

Select mean values 31
Averaging time 32
Duration of the measurement period 32
Memory 32
Period of storage 33
Ring buffer data format 34

Configuration 36

Configuration data 37
Konfigurationsdaten 38
Current transformer 39
Voltage transformer 39
RS485 interface (Option) 40

Transmission protocol RS485 40
Terminal resistance 40

RS232 interface (Option) 40

Transmission protocols RS232 40
Modem 40

Device address 41
Data recording 42
Limits 43

Internal relay outputs (Option) 43
External relay outputs 43
Assign limits 44
Example: Sum real power 44
Example: Real power EMAX 44
Example: Real power, sequence chart 44

Three wire measurement (Option) 45
Net frequency 46
Measured value rotation 47

Program changing times 47
Program measured value selection 48

Analogue output 49

Internal analogue output (Option) 49
External analogue outputs 51
Transmission protocol 51

Pulse output (Option) 54

Assign energy 54
Set pulse valency 55

Event memory 56

Table 3a 56

Internal auxiliary input (Option) 57

Table 3b 57
Reset of real power EMAX 57
Tariff change over 57
Synchronization of the internal clock 57
Programming 58

Tariff change over 59

External tariff change over (option) 59
Internal tariff changeover 60
Programming 60

Clock 61

Summer-/Wintertime changeover 61

Software Release 62
Serial number 62
LCD contrast 62
Password 63

Clearance password 63
User password 64
Master password 64

Page 5= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Transmission protocols 65

Service protocol 65
Modem 65
Modbus RTU 66

Transmission mode 66
Transmission parameters 66
Realized functions 66
Data formats 66

PROFIBUS DP (Option) 67

Configuration of UMG 503 67
Profibus DP V0 68
Profibus DP M1 68
Higher protocol 68
Create a GSD file 72
To bind in a GSD file 72
GSD file 72

Serial interfaces 73

UMG503 - RS485/RS232 - PC 73
UMG503 - Modem - PC 73
UMG503 - RS232- PC 73
UMG503 - RS485 - PLC 73
UMG503 - RS485 - WAGO I/O 73

Tables 74

Overview 74
Data formats 74

Table 1a 75
Table 1b 76
Table 2 77
Table 3a 78
Table 3b 79
Table 4 80
Table 5 80
Table 6a 81
Table 6b 81
Table 6c 82
Table 6d 82
Table 7 83
Table 8 84
Table 9 85
Table 10 86

PSWbasic 88

Required hard and software 88

Software 88
Hardware 88

Functions 88

Configure measured value indications 88
Memory 88
Configuration of UMG 503 89
Create GSD file 89

WAGO I/O SYSTEM 90

Installation instructions 90
Function clamps 90
Bus coupling 91

Indicating range and accuracy 92

Technical Data 93

Design for panel mounting 94

Back side 94

Design for DIN Rail Mounting (Option) 94

Back side 94
Side view 94
Side view 94

Connection example 95

Brief instructions 96

Current transformer 96
Votage transformer 96

Page 6 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Issue note

04.11.1998 First edition.

26.11.1998 Completions.

09.12.1998 Page 22 „password=3846“,
page 31 „Gvarh“, page 35 „housing depth“

03.03.1999 Completions.

26.03.1999 Connection diagram.

03.05.1999 cos(phi), event memory.

30.09.1999 Expansion of functions.

02.02.2000 Higher protocol for PROFIBUS.

22.02.2000 Indication of outer conductor voltage.

29.02.2000 Reset of measuring period.

08.02.2000 Delete work via serial interface.

08.06.2000 Profibus DP V1.

15.01.2001 Summer and winter time changeover.

25.01.2001 Measured value rotation, data logging.

08.07.2002 IT-Netz, Profibus 500kbps, tables.

31.07.2002 Ringbuffer uncompressed by choice.
Read limit outputs via Profibus.

22.10.2003 Additions.

11.08.2004 Page 70/71, table/address.

Warning of dangerous electrical voltage.

This symbol is supposed to warn you about
possible dangers, which can occur during
mounting, putting into service and usage.

Protective wire connection

Ꮨ



Meaning of the symbols

Page 7= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Generals

Receipt control

In order to ensure a perfect and safe use of the device, a
proper transport, expert storage, erection and mounting
and careful usage and maintenance are required. When it
may be supposed, that a safe operation is no longer
possible, the device has to be put out of service and be
protected against unintentional putting into service.
A safe operation can no longer be assumed, when the
device

• shows visible damage,

• does not work in spite of intact net supply,

• has been exposed to disadvantageous conditions for a
longer time (e.g. storage out of the allowed climate
without adaption to the room climate, dew etc.) or
transport use (e.g. falling from great height, even without
visible damage).

Please test the contents of delivery for completion, before
starting the installation of the device. All delivered options
are listed on the delivery papers.

Attention!

All plugs, which belong to the contents of
delivery, are plugged on the device! The 9pole
D-Sub plug for RS232 interface does not belong
to the contents of delivery.

The operating instructions also describe those
options, which are not delivered and therefore
do not belong to the contents of delivery!





Hints for usage

This device may be put into service and used by qualified
personnel according to the safety regulations and
instructions only. Please mind the additional legal and
safety regulations for the respective application.
Qualified personnel are persons, familiar with erection,
mounting, putting into service and usage of the product
and having the qualifications such as:

• education or instruction / entitlement to switch, release,
ground or characterize current circuits and devices
according to the standards of safety techniques.

• education or instruction in the care and usage of suitable
safety equipment according to the standards of safety
techniques.

Page 8 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Hints for maintenance

Before delivery the device is tested in various safety
checks and marked with a seal. If the device is opened,
these checks must be repeated.
There is no guarantee for devices, which are opened out
of the manufacturing works.

Repairing and calibration

Repairing and calibration work can be carried out in the
company of manufacture only.

Face plate

The cleaning of the front foil must be done with a soft
cloth using a common cleansing agent. Acid or acidic
agents may not be used for cleaning.

Battery

The life expectance of the battery is 5 years minimum for
a storage temperature of +45°C. The typical life
expectance of the battery is about 8 to 10 years. The
battery is plumbed and should be exchanged in the ma­nufacturing works only.

Waste management

The UMG 503 can be disposed as electronical waste
according to the legal regulations and recycled. Please
note, that the input Lithium battery must be disposed
separately.

Service

If you have problems, which are not described in this manual, please ask our technical support.
For further handling of your questions, please have the following at hand:

- Device description (see type plate),

- Serial number (see type plate),

- Software Release,

- Measurement and auxiliary voltage and

- Exact description of the problem.

You can contact us: Monday to Thursday between 07:00 and 15:00

and Friday between 07:00 and 12:00

Janitza electronics GmbH
Vor dem Polstück 1
D-35633 Lahnau
Support: Tel. [phone]

Fax [phone]
e-mail: [e-mail]

Page 9= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Product description

Intended use

The UMG 503 is suited for fix mounting and the measu­rement of voltage, current, harmonics (2nd to 20th),
power etc. in low and medium voltage switchgear. For
the operation of the UMG 503 a protective wire is
required.
The measurement is laid out for one phase and three
phase systems with or without neutral conductor (three
wire measurement). If the measurement should be carried
out via two voltage transformers only, the option "three
wire measurement" is required.
Alternating voltages (50Hz/60Hz) up to 500VAC against
ground and 870VAC between the outer conductors can
be connected directly. The voltage measurement inputs
are not separated galvanicly and must be connected to
the UMG 503 via external prefuses M2A.
The current measurement is carried out via a ../5A or ../
1A current transformer. In networks with a voltage up to
150 VAC against ground currents up to 6 A can be
connected to the UMG 503 directly and measured as
well.
The connection of the auxiliary voltage, the measure­ment inputs etc. are on the rear side via all-insulated plug
connectors.
The auxiliary voltage must be connected to the building
installation via a separation (switch or power switch) and
a 10 A overload protection.



Attention!

Measurement in systems with pulse load is not
possible, because no continuous scanning of the
measuring signals is carried out.

Functional description

The electronical three phase measurement system
determines and digitalizes the effective values of voltages
and currents in 50/60 Hz networks.
Two random test measurements are carried out each
second on all current and voltage measuring inputs.
Signal interruptions, which are longer than 500ms are
surely recognized. For each random test two periods are
scanned. From those sampled values the microprocessor
calculates the electrical magnitudes.
These measured values are indicated within the
programmable display.
Highest values, lowest values and programming data can
be saved in a battery buffered storage. Selected measu­red values will be saved with date and time in a ring
buffer.

Diagr. Equivalent circuit diagram for voltage measurement

2 M

2 M

2 M

L1

L2

L3

PEN

Page 10 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Putting into service

Auxiliary voltage

The input of the auxiliary voltage (terminals 14, 15) of
the UMG 503 is suitable for rated voltages up to 300VAC
against ground (PE). Higher voltages between auxiliary
voltage and ground can damage the UMG 503. To avoid
overvoltage, auxiliary voltage should be earthed.

Please also note the following:

- The wiring for the auxiliary voltage must be suited for

operating voltage up to 300VAC against ground.

- The auxiliary voltage must be protected with a fuse,

which should be in the range of 2...10A.

- A switch or power breaker must be provided for the

auxiliary voltage within the installation.

- The switch must be installed near the device and must

have an easy access for the user.

- The switch must be marked as a breaker for this device.

- Please ensure, that voltage and frequency match the

type plate before connecting it to the auxiliary voltage!

- The device may be operated with earthed housing only!

- Conductors with single solded wires are not suited for

connection to screw clamps!

- The screw clamps may only be connected in dead

condition.

Measuring voltage

The wires for the measuring voltage must be suitable for
up to 500VAC against ground and 870VAC phase to
phase.

Attention!
For the connection examples 5 and 6, the option "three
wire measurement" is required. In mains without neu-

tral conductor, voltage transformes must be connected
according to the respective connection example.

Testing current

Current transformers of .../5A or .../1A can be connected
directly to the current inputs of the UMG 503.

Attention!

Current transformers can lead voltage, which
can be live and should be earthed.

RS485 Interface cable

Bus structure
All devices are connected in bus structure (line). In one
segment up to 32 participants can be connected. At the
beginning and the end of one segment, the cable is
terminated with resistors. Within the UMG 503, these
resistors can be activated with two plug bridges.
For more than 32 participants, you must use a repeater
(line amplifier) to connect the single segments.

Protection
For the connection via RS485 interface, you must use a
twisted pair and protected cable. To achieve a sufficient
protection result, the protection must be connected to
housing or cabinet parts at both ends of cable with large
surface.

Baudrate (kbit/s)

Cable type 9.6 19.2 93.75 187.5 500 1500

Type A 1200 1200 1200 1000 400 200
Type B 1200 1200 1200 600 200 70

Cable length
The following table shows the maximum cable length in
meter (m) for different baudrates.

Cable specification:
The maximum length depends on cable type and baud­rate. We recommend type A

Cable parameters Type A Type B

Impedance 135-165Ohm 100-130Ohm

(f = 3-20MHz) (f > 100kHz)
Capacity < 30pF/m < 60pF/m
Resistance < 110 Ohm/km ­Diameter >= 0,34mm2 >= 0,22mm2

(AWG22) (AWG24)

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Page 11= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Connection example 2
Four wire measurement with three current transformers

Connection example 2a
Four wire measurement with three current transformers

Connection example 3aConnection example 3

Four wire measurement with two current transformers

Page 12 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Connection example 5
Three wire measurement with three voltage transformers and
three current transformers

Connection example 7
Three wire measurement with three voltage transformers and
two current transformers

Connection example 8
Three wire measurement with two voltage transformers and
two current transformers. (Option "Three wire measurement"
required)

Connection example 6
Three wire measurement with two voltage transformers and
three current transformers. (Option "three wire measurement"
required)

Page 13= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Connection example 9
Measurement in IT-mains with N.

L/L 80 .. 870V AC

L/PEN 50 .. 500V AC 0,005 .. 5A

27 26 25 24 23 22 21 20 191814 15

L1 L2 L3 N

2A

L1 N

Messung

Mesurement

Hilfs-

spannung

Auxiliary

Voltage

UMG503

L1
L2

L3
N

k l

k l

k l

../5(1)A

../5(1)A

../5(1)A

230V/400V 50Hz

10160990

Verbraucher

Consumer

4-

10A

PE

Connection example 10
Measurement in IT-mains without N.

L/L 80 .. 870V AC

L/PEN 50 .. 500V AC 0,005 .. 5A

27 26 25 24 23 22 21 20 191814 15

L1 L2 L3 N

2A

L1 N

Messung

Mesurement

Hilfs-

spannung

Auxiliary

Voltage

UMG503

L1
L2

L3

k l

k l

k l

../5(1)A

../5(1)A

../5(1)A

230V/400V 50Hz

101609100

Verbraucher

Consumer

4-

10A

PE

Page 14 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Putting into service

The device should be put into service as follows:

- Install the device.

- Connect auxiliary voltage Uh.
The size of the auxiliary voltage to be connected must be

according to the details on type plate.
The input of the auxiliary voltage (terminal 14,

15) of UMG503 is suitable for rated voltage up

to 300VAC against ground (PE). Higher voltage
between auxiliary voltage (terminal 14, 15) and ground
(PE) can damage the UMG503. To avoid overvoltage at
auxiliary voltage input, the auxiliary voltage should be
earthed.
The wiring for the auxiliary voltage must be suited for
operating voltage up to 300VAC against ground.

- program current and voltage transformer.

Attention!

• A switch or power breaker must be provided for
the auxiliary voltage within the installation.

• The switch must be installed near the device and
must have an easy access for the user.

• The switch must be marked as a breaker for this
device.

• Please ensure, that voltage and frequency match
the type plate before connecting it to the auxiliary
voltage!

• The device may be operated with earthed housing
only!

• Conductors with single solded wires are not
suited for connection to screw clamps!

• The screw clamps may only be connected in
dead condition.

Connection example 1
Four wire measurement with three current transformers

- Connect measurement current (max. 6A). Check
measurement current indication. Short-circuit current
transformer and check, whether the measurement current
indication is zero Ampere.

Attention!

None earthed current transformer clamps are

dangerous to be touched.

Current transformers, which are not loaded

secondarily, can lead live voltage and should be

short circuited.

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- Check phase assignment.
The assignment of outer conductor and current
transformer is correct, if no voltage occurs between outer
conductor and the respective current transformer
(primary).

- Connect interface (RS485 2-wire). Please use an
interface converter (RS485/RS232), when you connect it
to the COM-interface of a PC.



Ꮨ

Ꮨ

Ꮨ

- Connect measurement current (max. 500VAC against
ground) and check measuring voltage indication.

Attention!

The wiring for the measurement voltage must

be suitable for a voltage up to 500VAC against

ground and 870VAC phase to phase.

Attention!

For connection examples 6 and 8 the option

"three wire measurement" is required. In

networks without neutral conductor, voltage

transformers are required and must be connected

according to the respective diagram.

Page 15= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Removal of errors

Faults Possible reason Remedy

Indication dark External prefuse has released. Replace prefuse.

Internal prefuse has released. The fuse cannot be changed by the user. Please send

the device back to the manufacturing works
Contrast setting too dark. Change contrast settings in configuration menu.
Device faulty. Please send the device to the manufacturer for repair.

No current indication Measurement voltage not Connect measurement voltage.

connected

Current too small Current measurement in the Check and correct connection.

wrong phase.
Current transformer factor Read current transformer ratio on current transformer
programmed incorrectly. and program correctly.

Wrong current Current measurement in the Check and correct connection.

wrong phase.
Current transformer factor Read current transformer ratio on current transformer
programmed incorrectly. and program correctly.
Measuring range exceeded. Install bigger current transformer.
The peak current value on Install bigger current transformer.
measuring input was exceeded
caused by harmonics. Attention: Please ensure, that the measuring

inputs are not overloaded.
The current on measuring Install smaller current transformer.
input was underscored.

Voltage L-N too small Measurement in wrong phase. Check and correct connection.

Voltage transformer factor Read current transformer ratio on current
programmed incorrectly. transformer and program correctly.

If the voltage is not measured via voltage transformer

please program a voltage transformer ratio of

400/400.
Voltage on measuring input Install smaller voltage transformer.
out of measuring range.

Voltage L-N incorrect Measurement in wrong phase. Check and correct connection.

Voltage transformer factor Read current transformer ratio on current
programmed incorrectly. transformer and program correctly.

If the voltage is not measured via voltage transformer

please program a voltage transf. ratio of 400/400.
Measured range exceeded. Install bigger current transformer.
The peak voltage value on Install bigger current transformer.
measuring input was exceeded
caused by harmonics. Attention: Please ensure, that the measuring inputs

are not overloaded.

Voltage L-L too small/ Outer conductors exchanged. Check and correct connection.
too big N not connected. Check and correct connection.

Phase shift ind /cap too Current path is assigned to Check and correct connection.
small or big the wrong voltage path.

Programmed data get lost Battery empty. Please send device to the manufacturer for

exchanging the battery.
The device has been exposed to External protection measure such as shielding,
electromagnetical interference filtering, earthing or spatial separation.
bigger than the allowed by
technical data.

Page 16 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Faults Possible reason Remedy

Real power too small / Current transformer factor Read current transformer ratio on current transformer
too big programmed incorrectly. and program correctly.

Current path is assigned Check and correct connection.
to the wrong voltage path.
Current on measuring input Install bigger or smaller current transformer.
out of measuring range.

Attention: Please ensure, that the measuring

inputs are not overloaded.
Voltage transformer factor Read current transformer ratio on current
programmed incorrectly. transformer and program correctly.

If the voltage is not measured via voltage transformer

please program a voltage transformer ratio of

400/400.
Current on measuring input Install bigger or smaller current transformer.
out of measuring range.

Attention: Please ensure, that the measuring

inputs are not overloaded.

Real power consumption / One current transformer at Check and correct connection.
supply exchanged. least exchanged.

Current path is assigned to Check and correct connection.
the wrong voltage path.

The time is indicated The device has no automatical Correct time by hand.
incorrectly. summer-/winter change over.

"EEEE" in the display. The measuring range of Check measuring current and insert a suitable current

current was exceeded. transformer.
The measuring range of Check measuring voltage and insert a suitable voltage
voltage was exceeded. transformer.

Duration of memory =38 s. Not enough memory for all Select more equal averaging times for the measured

selected values. values.

Relay output, analogue The outputs are not programmed Program the outputs.
output or pulse output
do not react. The service protocol 04 is set Select another protocol.

The device does not work Device out of order. Please send the device to the manufacturer with
correctly in spite of the an exact description of the failure.
above

Page 17= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Usage

Keys

The UMG503 is operated using the three keys within the
front plate.

= Key 1
= Key 2
= Key 3

In the different indications these keys have various mea­nings.

Edit

In configuration menu CONF and in programming menu
PRG the settings in edit mode EDIT can be changed.
In edit mode EDIT the keys have the following meaning:

Key 1 Select cipher/number or leave edit mode.
Key 3 Change ciphers.
Key 2 Multiply the number with factor 10.

Main menu

After a net return the device always starts with the first

programmed measured value indication. With key 1 you

change over between

the measured value indication,
the SELECT mode,
the configuration menu CONF and
the programming menu PROG

Special functions

Press and hold key 1 for about 2 seconds to return to the
first measured value window of the measured value indi­cation from each program part.
Hold key 2 or key 3 for about 2 seconds to return to the
previous measured value window.

Example: Delete all

highest and lowest va-

lues

Programming menu PRG

Example: Ratio current

transformer

Configuration menu CONF

SELECT Mode

Indication of date and

time information.

Year=98 Month=10

Day=25 Hour=08

Minute=10 Second=31

Example: Voltages L1-

N, L2-N, L3-N.

Measured value display

SELECT

PRG

V

V

V

L3

L1

L2

Y.M

D.H

M.S

SELECT

A

A

SELECT CT

CONF

Page 18 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Retrievable meas. and calculated quantities

Measured value Mean value Measured value Date and time

Measured quantity L1 L2 L3 Sum L1 L2 L3 Sum Peak value Lowest val.

Voltage L-N, L-L x x x x x x x x x
Current x x x x1) x x x x

1

x x

2)

x
Real power x x x x x x x x x x x
Real power, 15min. mean value x x x x
Apparent power x x x x x x x x x x x
Reactive power x x x x x x x x ind cap x
cos(phi) x x x x x x x x ind cap x
Frequency of voltage x x x x x x x x x x
Real work
without reverse running stop x Start./run. time
Consumption x Start./run. time
Supply x Start./run. time
Reactive work
without reverse running stop x Start./run. time
inductive x Start./run. time
capacitive x Start./run. time
Partial harm. content HDF, I/U x x x x x x x x x
Total harmonic content THD, I/U x x x x x x x x x

1) Current in Neutral

2) Maximum value for current measurement and current mean value

Measured value indication

The display of UMG503 can indicate up to three measu­red values simultaneously.

V

V

V

L3

L1

L2

Example: Voltages L1­N, L2-N, L3-N

With the keys 2 and 3 one can scroll through those
measured value indications.

Using key 3 you scroll
to the next measured
value indication.
Example: Current in
phase L1, L2 and L3

A

A

A

L3

L1

L2

To keep the selection of the indicated measured values
clear, only a certain part of all possible measured values
is programmed for the display in delivery condition.
In the table "Retrievable measured and calculated
quantities" all measured values, which can be called up,
are listed. On the pages 32 to 33 the manufacturer's
settings of the retrievable values are listed.
If other measured values should be indicated on the
display of UMG503, they can be selected in the software
PSW basic, which belongs to the contents of delivery,
and transmitted via serial interface to the UMG 503.

After a net return the device always starts with the first
programmed measured value indication.

Page 19= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Min. value voltage L1-L2

Min. value voltage L2-L3

Min. value voltage L3-L1

Max. value voltage L1-L2

Max. value voltage L2-L3

Max. value voltage L3-L1

Mean val. voltage L1-L2

Mean val. voltage L2-L3

Mean val. voltage L3-L1

Meas. val. voltage L1-L2

Meas. val. voltage L2-L3

Meas. val. voltage L3-L1

Min. value current L1

Min. value current L2

Min. value current L3

Max. value current L1

Max. vaue current L2

Max. value current L3

Mean value current L1

Mean value current L2

Mean value current L3

Measured value current L1

Measured value current L2

Measured value current L3

Min. value real power L1

Min. value real power L2

Min. value real power L3

Max. value real power L1

Max. value real power L2

Max. value real power L3

Mean value real power L1

Mean value real power L2

Mean value real power L3

Meas. val. real power L1

Meas. val. real power L2

Meas. val. real power L3

Mean value app. power L1

Mean value app. power L2

Mean value app. power L3

Meas. val. app. power L1

Meas. val. app. power L2

Meas. val. app. power L3

Max. value app. power L1

Max. value app. power L2

Max. value app. power L3

Min. value app. power L1

Min. value app. power L2

Min. value app. power L3

Measured value display (Manufacturer's settings)

Mean val. react. power L1

Mean val. react. power L2

Mean val. react. power L3

Meas. val. react. power L1

Meas. val. react. power L2

Meas. val. react. power L3

Max. val. react. power L1

Max. val. react. power L2

Max. val. react. power L3

Min. val. react. power L1

Min. val. react. power L2

Min. val. react. power L3

Min. value voltage L1-N

Min. value voltage L2-N

Min. value voltage L3-N

Max. value voltage L1-N

Max. value voltage L2-N

Max. value voltage L3-N

Mean value voltage L1-N

Mean value voltage L2-N

Mean value voltage L3-N

Meas. val. voltage L1-N

Meas. val. voltage L2-N

Meas. val. voltage L3-N

Page 20 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Delivered real energy

Cons. real energy tariff 02

Cons. real energy tariff 01Cons. real energy tariff 00

Cap. react. energy tariff 20 Cap. react. energy tariff 22Cap. react. energy tariff 21

Ind. react. energy tariff 10 Ind. react. energy tariff 11

Ind. react. energy tariff 12

Mean value frequency L1

Mean value frequency L2

Mean value frequency L3

Meas. value frequency L1

Meas. value frequency L2

Meas. value frequency L3

Max. value frequency L1

Max. value frequency L2

Max. value frequency L3

Min. value frequency L1

Min. value frequency L2

Min. value frequency L3

Mean value cos(phi) L1

Mean value cos(phi) L2

Mean value cos(phi) L3

Meas. value cos(phi) L1

Meas. value cos(phi) L2

Meas. value cos(phi) L3

Max. value cos(phi) L1

Max. value cos(phi) L2

Max. value cos(phi) L3

Min. value cos(phi) L1

Min. value cos(phi) L2

Min. value cos(phi) L3

Page 21= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Meas. val. sum real power

Meas. val. sum react. power

Meas. val. sum cos(phi)

Mean val. sum real power

Mean val. sum react. power

Mean value sum cos(phi)

Min. value sum real power

Min. val. sum react. power

Min. value sum cos(phi)

Max. value sum real power

Max. value sum react. power

Max. value sum cos(phi)

Measured value current in N

Mean value current in N

Max. value current in N

Meas. val. sum power 15min Min. val. sum power 15 Max. val. sum power 15

Date / time Serial number Software Release

Mean value harmonic I L1

Mean value harmonic I L2

Mean value harmonic I L3

Max. value harmonic I L1

Max. value harmonic I L2

Max. value harmonic I L3

Mean value harmonic U L1

Mean value harmonic. U L2

Mean value harmonic. U L3

Max. value harmonic U L1

Max. value harmonic U L2

Max. value harmonic U L3

Page 22 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Calling up additional information

Additional information can be called up for the most
indicated measured values:

Date and time for the highest and lowest values.
Averaging times for the mean values.
Duration of energy determination.

Using key 3 you scroll
to the measured value
indication of the real
power.

Mean values

For each measured value, except work, a mean value is
calculated. The averaging time is programmable. Only
mean values can be marked for storage within the ring
buffer.
The calling up - in the example for the power maximum
value in phase L3 - is carried out as follows:

Press key 1 for about 2 seconds and return to the first
measured value window of the measured value indicati­on from each program part.

Pressing key 2 you
scroll to the mean va-
lues of real power.

kW

kW

kW

L3

L1

L2

Select the SELECT
mode using key 1.
The symbol SELECT
is flashing.

Confirm with key 2.
The symbol SELECT
is on.

kW

L3

SELECT

kW

kW

kW

L3

L1

L2

kW

L1

SELECT

Select the mean value
of the real power in L3
using key 1.

Call up the averaging
time for the real power
in phase L3 as an addi­tional information
using key 2.

kW

M.S

L3

SELECT

Averaging time = 15
Minutes

Page 23= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Scroll to the display of
current using key 3.

A

A

A

L3

L1

L2

Scroll to the maximum
values of current using
key 2.

Select mode with key

1.
The symbol SELECT
is flashing.

Confirm with key 2.
The symbol SELECT
is on.

With key 2 call up addi-
tional information
about date and time for
the selected maximum
value.

A

L3

L1

L2

A

A

Y.M

D.H

M.S

SELECT

Year=98 Month=10
Day=25 Hour=08

Minute=10 Second=31

A

L1

SELECT

Select maximum
current value in L2 with
key 1.

Minimum and maximum values

For each minimum and maximum value, the first time of
existance is saved with date and time. To call up, for
example, the maximum current value in L2, please
proceed like mentioned on the right.

Keeping key 1 pressed for about 2 seconds, you return to
the first measured value display from all programm parts.

L2

A

SELECT



Attention!

After return of the auxiliary voltage, all mini­mum values are deleted.

Page 24 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Energy determination

Starting time and running time are saved for the follo­wing real and reactive energy:

Real energy without reverse running stop
Real energy supply
Real energy consumption (T00)
Reactive energy without reverse running stop
Reactive energy ind., (T10)

Reactive energy cap., (T20)
Starting and running time for energy meters, controlled
by internal or external tariff changeovers, are not saved.

Move to the measured
value indication of
reactive energy using

key 3.

M VArh

kVArh

VArh

L1
L2
L3 ind

SELECT

T

Go to select mode using
key 1.
The symbol SELECT
is flashing.
Confirm with key 2. The
symbol SELECT is on.

M VArh

kVArh

VArh

L1
L2
L3 ind

T

Call up the additional
information starting
time for reactive energy
measurement using key

2.

Confirm again with key

2. The running time for
reactive energy measu­rement is indicated.

Year=99 Month=09
Day=06 Hour=08
Minute=15
Seconds=41

SELECT

Y.M

D.H

M.S

SELECT

Y.M

D.H

M.S

Days=02 Hours=04
Minutes=15 Seconds=41

The interrogation, for reactive energy ind (T10) for
instance, can be carried out as follows:

Press key 1 for about 2 seconds and you return to the first
measured value window of the measured value indicati­on from each program part.

Page 25= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Real power EMAX

For the most measured values a mean value is build over
the last passed period of time within the UMG 503 each
second. This passed period of time is the programmable
averaging time.

The real power is an exception. For the real power the
mean value real power EMAX is build over a
programmable measurement period additionally.
The measuring period duration for real power EMAX
can be 5, 10, 15, 30 or 60 minutes. The manufacturer's
setting is 15 minutes.
The real power EMAX is calculated from the work within
a certain period of time divided by the passed time of the
period. The calculation is done each second, in order to
ensure the indication of real power EMAX within the
measurement period. For the comparison and storage of
the EMAX monthly peak value only the real power,
measured at the end of a period, is used.

0123456 t/Sec.

Diagr.: Mean value for real power over 5 seconds.

Indication of a new mean
value for the real power.

Mean value for the 5. seconds

Mean value for the 6. seconds

Mean value for the 7. seconds

The tariff changeover is not only valid for real and
reactive energy meters but also for real power EMAX.

EMAX- monthly- peak values

All EMAX-monthly-peak values are saved for all tariffs
each month. The old EMAX-monthly-peak values are
overwritten at the beginning of a new year.
If the real power EMAX is configurated for the display
software PSWbasic, real power EMAX can be indicated
in the display of the UMG 503 as well.
The EMAX- monthly- peak values can be read out directly
at the UMG503 and via the serial interface, with the
software PSWbasic, for instance.

Diagr.: Calculation of mean value for real power EMAX over
a measurement period of 15 minutes.

0 5 10 15 20 25 t/Min.

1.Measurement period 2.Measurement period

End of measurement period

Tariff

Month

Day . Hour
Minute

W

D.H

M.

L1
L2
L3

Real power EMAX

Peak value

Energy meter
Programmable via
Time programs 1-4

Aux. input
Energy work cons. T00 T01 T02 T03 T04
Reactive energy ind. T10 T11 T12 T13 T14
Reactive energy cap. T20 T21 T22 T23 T24
Real power EMAX 00 01 02 03 04

Attention!

The real power EMAX is not indicated in the
standard indications.



Attention!

Real power EMAX is calculated from energy
without reverse running stop.



Page 26 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

With key 3 you scroll to
the indication of real
power EMAX.

Real power EMAX
(Example 100W).
Rest time of period
(Example. 8Min.
10Seconds).
Measuring period
(Example 15Minutes).

Reset of the measuring period

The reset of the measuring period deletes real power
EMAX and starts a new period.
If no external reset is carried out within the programmed
period, the reset is carried out by the internal clock.
If there are less than 30 seconds between two resets, the
measuring period is reset and real power EMAX is deleted.
The obsolete measured value is not saved in the maxi­mum and minimum memory and not be deposited within
the event memory, if programmed.

The measuring period for real power EMAX can be reset
by the following means:

- automatically, after measuring period,

- internally, via keyboard,

- internally, via auxiliary input (Option),

- externally, via connected WAGO- Modules,

- externally, via PROFIBUS DP Protocol,

- externally, via MODBUS Protocol. (Table 5)

Pressing key 1 for about 2 seconds, real work will be
deleted and you return to the first programmed measured
value window of the measured value indication!

W

M.S

L1
L2
L3

With key1 go to Select-
Mode.
The symbol SELECT
flashes.
Confirm with key 2 .
The symbol SELECT
is visible.

Press Key2 again. The
rest time is deleted.

W

M.S

L1
L2
L3

SELECT

W

M.S

L1
L2
L3

The symbol SELECT
disappears.
The period for real po­wer EMAX is started
again.

Reset of the measuring period by keyboard

Page 27= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Harmonics

Harmonics are the integer multiples of the fundamental.
The UMG503 measures the fundamental of voltage in
the range of 45 to 65 Hz. The calculated harmonics of
voltage and current apply to this fundamental. For too
distorted voltages, the fundamental cannot be detected
accurate enough. Nevertheless it is possible to calculate
the harmonics by selecting a stable fundamental of 50Hz
or 60Hz. See also chapter "Net frequency".
The UMG503 calculates up to the 20th harmonic.

Total harmonic distortion factor THD(f)

The calculated total harmonic distortion factor THD(f) is
the effective ratio of the harmonics compared to the
fundamental. The total harmonic distortion is given in
%.
As the total harmonic distortion corresponds to the fun­damental but not to the total value, it can exceed 100%.

THD(f) = Total Harmonic Distortion (fundamental)

Partial harmonics

In further descriptions, the single harmonics are described
as partial harmonics.
The partial harmonics of current are given in Ampere
and the partial harmonics of voltage are given in Volt.

Current meas. without measuring
voltage

The net frequency is detected from the measuring voltage
within the UMG 503. From the net frequency, the scan­ning frequency for current and voltage inputs is
calculated.
If the measuring voltage is missing, net frequency and
scanning frequency cannot be detected. Voltage, current
and all resulting values cannot be calculated and are
indicated with zero.
If current should be measured without measuring voltage,
the net frequency must be selected as a stable frequency
at UMG 503.
As stable frequency, 50Hz and 60Hz are available.

Page 28 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Programming

The following settings can be carried out in the menu

PRG:

Delete real and reactive energy,
Delete all highest and lowest values "dEL"
Select measured values for the ring buffer ,
Select averaging time for the measured values,
Delete single highest and lowest values,
Read out duration of storage of the ring buffer.

To reach the menu PRG, for example from the indicati­on of voltage, please proceed like this:

SELECT

PRG

V

V

V

L3

L1

L2

SELECTConfirm with key 1.

In the measured value
indication the text SE-
LECT appears
flashing.

Confirm key 1 again.
Now you are in the
menu CONF.

A

A

SELECT CT

CONF

Confirm key 1 again.
Now you are in the
menu PRG.

Confirm the selection
of the menu PRG using
key 2.
The text SELECT dis­appears from the dis­play.

PRG

Delete real and reactive energy

Real and reactive energy can be deleted separately via
keyboard or serial interface. Starting time and running
time will be actualized. If real energy is deleted, all
corresponding tariffs are reset. If reactive energy is
deleted, the meters for inductive and capacitive energy
are reset.

Delete via keyboard

Please go to menu PRG (See chapter programming).

Confirm the selection
of the menu PRG using

key 2. The text SE­LECT disappears.

PRG

Pressing key 2 again,
the delete menu for

real and reactive
energy appears.

The arrows for mini­mum and maximum
values disappear.

Select the work to be
deleted by pressing key
1, for example real
energy.
The text EDIT appears
and "ALL" flashes.
Confirming with key 3,
a "0" flashes in the in­dication.

Pressing key for about 2 seconds, real work will be
deleted and you return to the first programmed measured
value window of the measured value indication!

Wh

VArh

PRG

PRGEDIT

Wh

VArh

Delete via serial interface

In address 5000 a 17Byte large control word is deposited.
A part of this control word is used for deletion of energy:

Byte 7 > 0, delete real energy

and

Byte 8 > 0, delete reactive energy.

In order to overwrite a Byte, first

read control word,
overwrite Byte7/8 with e.g. 1

and rewrite the changed control word to address 5000.

Attention!
Changing the control Byte incorrectly can lead to
malfunctions of the UMG 503.

Page 29= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

PRG

EDIT

If you want to delete all
maximum values with
key 1, the indication
"ALL" flashes.

Text flashing

Maximum
value

Minimum value

SELECT

PRG

Delete highest and lowest values

Highest values are marked with an arrow upwards, the
lowest with an arrow downwards.

Select menu PRG (see
chapter programming).
Using key 2 you con-
firm the selection of
menu PRG and the text
SELECT disappears.

There are two possibilities of deleting the highest and
lowest values:

- Delete all minimum and maximum values,

- Delete min. and maximum values separately.

The monthly peak values of the real power EMAX belong
to the maximum values and are deleted together with
them.

Using key 3, a "0" ap­pears within the indi­cation and all highest
values are marked for
deletion.
Pressing key 1 again,
you change to the indi­cation of minimum va­lues. Now the minimum
values could be marked
for deletion.

PRGEDIT

Pressing key for about 2 seconds, the highest value
is deleted and you return to the first measured value
window of the measured value indication!

Using key 2 you con-
firm the selection of
menu PRG and the text
SELECT disappears.

PRG

Delete all minimum and max. values



Attention!

After return of auxiliary voltage, all minimum
values are deleted.

Page 30 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Delete min. and max. values separately

If you are in the menu PRG and you would like to delete
the highest voltage values only, please proceed as follows:

V

V

L3

L1

L2

V

PRG

V

L2

PRG

EDIT

V

L1

PRGEDIT

Pressing key 1, the
highest value in phase
L1 is indicated.
The text EDIT appears.

Now scroll to the
highest values of
voltage using key 2.

Pressing key 1 again, the
highest value in phase
L2 is indicated.
If this highest value
should be deleted, ple­ase press key 3.
The indicated value is
set to 000.0 for a short
duration and is over­written by the next
measured value.

Pressing the key for about 2 seconds, you leave the
PRG menu and return to the first measured value window
of the measured value indication!

Change to the measu­red value indication
using key 3. In this
example the program­ming of the current in
the three phases is
shown.
All three currents are
programmed for the
ring buffer.

Now scroll to the
measured value indica­tion of the voltages by
using key 3.

A

A

A

L3

L1

L2

PRG

V

V

V

L3

L1

L2

PRG

Averaging time =15 Minutes

Page 31= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Ring buffer

For the most measured values a mean value is calculated
(please see table "Measured and calculated values").
These mean values can be selected for storage in the ring
buffer.
The mean values are marked with a horizontal bar on top
of the measured value. The mean values, selected for
storage in the ring buffer, can be called up in the menu
PRG and are marked by the flashing of both of the arrow
symbols.
Additionally, the following energies can be selected for
storage in the memory:

Real energy,
Real energy consumption,
Real energy supply,
Reactive energy,
Reactive energy inductive,

Reactive energy capacitive.
Those energies with the various tariffs cannot be selected
for storage in the ring buffer. For energies, the period
between two savings is set to one hour.

The more mean values are selected for storage in the ring
buffer, the earlier the ring buffer is complete and will be
overwritten. The period of storage for the ring buffer can
be read out in the measured value indication.
The stored measured values can be read out of the ring
buffer using the "programming- and reading out software
PSWbasic" only.

Press key 3 to scroll to
the mean value indica­tion of voltage.

Select mean values

If you are in menu PRG and would like to save the mean
value of voltage L2 within the ring buffer, please proceed
as follows:

Change over to mean
value indication using
key 3. In this example
the programming of
current in the three
phases is indicated.

A

A

A

L3

L1

L2

PRG

With key 3 you select
the voltage in phase L2.

V

V

V

L3

L1

L2

PRG

Switch on or off the
arrow symbols using
key 2.

If the arrow symbols are
switched on, this mean
value is stored every 15
minutes in the ring buf­fer.

V

L2

PRGEDIT

V

L2

PRGEDIT

Confirm selection of the
menu PRG using key
2, the text SELECT dis-
appears.

PRG

Averaging
time=15Minutes..

All three currents are pro­grammed for storage in the
ring buffer.

Voltage L2 is not pro­grammed for storage in
the ring buffer.

Attention!

If the averaging time, the current transformer
ratio, voltage transformer ratio, three wire or
four wire measurement or the selection of the
measured values stored in the ring buffer are
changed, the contents of the ring buffer are
deleted completely.



Page 32 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Averaging time

An averaging time can be assigned to each mean value.
All averaging times are programmed to 15 minutes, when
the device leaves the factory.

Attention!

If the averaging time, the current transformer, the
voltage transformer, the three or four wire measu­rement or the measured value selection is chan­ged, the ring buffer is deleted.

V

L2

PRGEDIT

If the averaging time, for example, for voltage L2 should
be changed to 5 seconds, please proceed as follows:

Select mean value as
described in chapter
"select mean value".

Select averaging time of
5 seconds using key 3.

The averaging time is selectable from 5, 10, 15, 30
seconds, 1, 5, 10, 15, 30 and 60 minutes.

V

L2

PRGEDIT

Duration of the measurement period

The averaging time for real power EMAX is called measu-
ring period.
Within the measuring period, the real work is measured
and divided by the time passed by. As the result, the real
power EMAX is indicated. When the measuring period is
over, the added real work is deleted.
The measuring period for real power EMAX can be set to
5, 10, 15, 30 and 60 minutes. The factory presetting is a
measuring period of 15 minutes.

Memory

The memory of the UMG 503 is split into three areas:
The event memory, the peak and lowest value storage
and the ring buffer. The event memory and ring buffer
can only be read out via PC using the programs PSWbasic
or PSWprofessional. The read out data are available in
ASCII-format, and the ring buffer data in binary format
additionally. With PSWprofessional you can create
graphics from those binary data.

In the peak and lowest value storage, the peak and
lowest values of the measurement values are saved with
date and time. All EMAX monthly peak values are saved
for each months and all tariffs. The old EMAX monthly
values are overwritten at the beginning of a new year.

In the ring buffer all measurement values, marked for
storage, are saved. The configuration of the ring buffer is
only possible with the option "Configuration UMG503".

In the event memory the following events can be saved
with date and time:

- Deleting the event memory,

- Relay output 1 on/off,

- Relay output 2 on/off,

- Breakdown and return of the auxiliary voltage,

- Breakdown and return of the measurement
voltage.
The breakdown of the measurement voltage will be
recognized, when:

- The measurement voltage is smaller than 50% of the set
primary voltage of the current transformer,

- and the breakdown lasts longer but 500ms.

Pressing key for about 2 seconds, the highest value
is deleted and you return to the first measured value
window of the measured value indication!



Setting range

Description Setting range

Averaging time 5, 10, 15, 30Sec.,

1, 5, 10, 15, 30, 60Min.

Ring buffer All measured values (See table

"Measured and calculated
quantities")

Presettings

Desription Presettings

Averaging time All measured values 15.00 m.s.
Ring buffer U1, U2, U3, I1, I2, I3, P1, P2, P3

Page 33= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Period of storage

The more mean values are marked for storage in the ring
buffer, the shorter becomes the period of storage. With
the factory's presettings

Mean values: U1, U2, U3, I1, I2, I3, P1, P2, P3

Averaging time: 15 minutes .
The mean values of about 1 year are saved in a device
with 512kRAM. In devices with 128kRAM, this duration
is about 3 months. If this period is over, the most ancient
mean values are overwritten.
If various averaging times are assigned to the mean
values to be stored, more room for storage can be required,
and the period of storage can get much shorter.
If only 38 seconds are indicated for the period of storage,
it cannot be granted any more, that the selected values
are saved in the UMG 503. To enlarge the period of
storage, you can remove some measured values with
large periods or increase little periods of storage.

Attention!

After the selection of the measured values to be saved,
the actual period of storage must be checked! If the
period of storage is below 38 seconds, it cannot be

granted, that the selected values are saved in the
UMG 503.

Selecting menu PRG
(see chapter program­ming), the following in­dication appears first:

Text flashing Peak values

Lowest values

SELECT

PRG

Scroll to the indication
besides using key 3 .
Here, for example, the
period of storage is
estimated at more than
one year.

With key 2 the selec­tion of the menu PRG
is confirmed, and the
text SELECT disap­pears.

PRG

Y.M

D.H

M.S

PRG

1year, 5months, 18days, 13hours, 45minutes, 0seconds

An estimate of the period of storage can be read out in
menu PRG.



Page 34 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Ring buffer data format

Data sets can be saved in compressed or uncompressed
form. With the presettings, the data are saved com­pressed.
The programming and reading out software
PSW503basic can read compressed data from ring buf­fer only. Other applications can read data sets in uncom­pressed form only.
An uncompressed data set consists of the type of measu­red value, the date and the measured value. This value is
always given in Float format.

1)

r/w = read/write

2)

Measured values {float: Actual value[L1, L2, L3], Mean value[L1, L2, L3], Minimum[L1, L2, L3], Maximum[L1, L2, L3]}

Changeover ring buffer

The changeover from compressed to uncompressed
storage of data is carried out via the serial interface. If
the Modbus RTU protocol is used, please use the
addresses. If the Profibus DP protocol is used, please use
the index.
If data should be saved uncompressed within the ring
buffer, address 19010dez (Index 11) must be overwritten
by 2 Bytes of a content by choice.
If data should be saved uncompressed within the ring
buffer, address 19020dez (Index 12) must be overwritten
by 2 Bytes of a content by choice.

Type of measured value

The type of the measured value can be determined by the
addresses from the tables 1a and 1b. Example: If the type
is marked by the decimal number „1004“, this
corresponds to the current mean value in phase L2.

Date

In the part of the data set with the description „Date“,
the date and time of the measurement are saved.

char: Year, Month, Day, Hour, Minute, Second

Diagr. Structure of „Date“

Meas. val. type Date Meas. value
2 Bytes 6 Byte 4 Byte (float)

Read ring buffer

If the data sets have been saved uncompressed, they can
be read via the serial interface with Modbus protocol.
To make this reading easy, there is a ring buffer pointer
(4 Byte) available. This ring buffer pointer always points
to the beginning of a data set. One data set consists of 12
Bytes.



Attention!

If another way of compression is selected, the
total content of the ring buffer is deleted.

Table 1a, Measured value
Meas. val. in floating point form.

Description Addr.(dez) r/w1)Type

Current 1000 r Meas. val2) A L1, L2, L3

1001 r Actual value in L2
1002 r Actual value in L3
1003 r Mean value in L1

1004 r Mean value in L2

.. .. ..

Voltage N-L 1012 r Meas. val.2) V L1, L2,
Voltage L-L 1024 r Meas. val.2) V L1-L2, L2-L3,
Real power 1036 r Meas. val.2) W Sign -=Supply.

.. .. .. .. .. ..

Extract from table 1a

Diagr. Assign measured value type.

Type Date Meas. value
2 Bytes 6 Byte 4 Byte (float)

Ring buffer

Data set 1
Data set 2
Data set 3
.
.
.
Data set n
Data set n+1
.
.

Oldest data set in ring buffer

Ring buffer pointer = 0000.
Last saved data set

Next data set, that will be
saved

Diagr. Data sets in ring buffer.

Attention!

The inaccuracy of the compressed memory data
is max. ±0,4% rng.

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Page 35= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Read data sets

The reading of data sets is controlled by the following
addresses:

Read address 19000dez (Index 231).
The first 4 Bytes provide the contents of the ring buffer
pointer.
The next 12 Bytes provide the first data set, which the
pointer points on.
The ring buffer pointer is increased automatically by the
number of read Bytes, but the first four Bytes are not
included.

Write address 19000dez (Index 10).
Set ring buffer pointer on a data set of the ring buffer.
If the ring buffer pointer is overwritten by 0000, it points
on the last read beginning of ring buffer with address
19008dez (Index 235).

Read address 19002dez (Index 232).
Read a number (4 Bytes) of data sets from that address
on, on which the pointer points. The ring buffer pointer
is increased automatically by the number of read Bytes.
The number of read Bytes must be divisible by 12.

Read address 19004dez (Index 233).
Provides that address (4 Bytes), on which the actual
pointer points.

Read address 19006dez (Index 234).
Read a number of data sets, from that address on, on
which the pointer points. The ring buffer pointer is not
increased.

Read address 19008dez (Index 235).
Delivers the number (4 Bytes) of the Bytes saved in ring
buffer. If you divide this number by 12, the result is the
number of the saved data sets.
The ring buffer pointer is set to the last data set in ring
buffer. The contents of this pointer is therefore zero.
Overwrite address 19010dez (Index 11) with 2 Bytes
with a content by choice
New data sets are written into the ring buffer uncom­pressed. If data were saved before in a compressed form,
the ring buffer will be deleted.
Read address 19010dez (Index 236).
Delivers the storage format of the ring buffer in 2 Bytes.
00=compressed ring buffer
01=uncompressed ring buffer

Overwrite address 19020dez (Index 12) with 2 Bytes
with a content by choice.
New data sets are written into the ring buffer compressed.
If data were saved before in a uncompressed form, the
ring buffer will be deleted.
Overwrite address 19030dez (Index 13) with 2 Bytes
with a content by choice.
The ring buffer will be deleted.

Example 1: Read the last saved data set.

Read adress 19008dez (Index 235). The ring buffer
pointer (0000) is set to the last data set in ring buffer.
Read 12 Bytes from address 19006dez (Index 234). 12
Bytes correspond to one data set. The ring buffer pointer
is not increased.

Example 2: Read all saved data sets.

1.) Read address 19008dez (Index 235). The number of
saved Bytes is read. If you divide the result by 12, the
number corresponds to the saved data sets. The pointer
points to the last saved data set in ring buffer.

2.) Read the content of the Bytes in ring buffer by address
19002dez (Index 232). With the MODBUS-Protocol, at
maximum 240 Bytes=20 data sets can be read per
reading. The number of read Bytes must be divisible by

12.
The ring buffer pointer is increased automatically by the
number of read Bytes and points to the next data set,
which has not been read yet.

3.) Repeat reading of address 19002dez (Index 232) as
long as all data sets have been read.

Attention!

If a failure appeared during data transmission, the
complete procedure must be repeated, starting
with step 1.

Example 3: Read all saved data sets.

1.) Read address 19008dez (Index 235). Reads the num­ber of saved Bytes in ring buffer. Divided by 12, the num­ber of saved data sets is the result. The pointer points to
the last saved data set.

2.) Read address 19000dez (Index 231). The first 4 Bytes
refer to the actual address of the pointer. The next 12
Bytes provide the first data set of the ring buffer. With
MODBUS-Protockol you can read 244Bytes (4Byte + 20
data sets) at maximum per reading.

3.) Repeat reading address 19000dez (Index 231) as long
as all data sets have been read.

Attention!

If a failure occured during data transmission, the
last actual address of the ring buffer pointer must
be written on address 19000dez (Index 10) and the
last reading procedure must be repeated.

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Page 36 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Configuration

In configuration menu CONF the required settings are
noted for operating the UMG503 (see also "Table of
configuration data"). When the device is delivered, these
settings are not protected and can be changed. An
unintended change of the settings can be avoided using a
password.

The following settings can be read out and changed:

Confirm the selection
of the menu CONF
using key 2.
The text SELECT dis­appears.
Now you are in the
menu CONF, and the
settings of the current
transformer are indica­ted.

V

V

V

L3

L1

L2

SELECT

Press key 1.
The flashing text SE-
LECT appears in the
indication.

Press key 1 again.
Now you are in the
menu CONF.

A

A

SELECT CT

CONF

A

A

CT

CONF

To jump from a measured value indication, in this example
the indication of voltage, to the menu CONF, please
proceed as follows:

Current transformer
Voltage transformer
Interfaces

RS485 interface (option)
RS232 interface (option)
Infrared interface (option)

Device address
Data recording
Limit group 1 (Option)
Limit group 2 (Option)
Three wire measurement (Option)
Scanning frequency
Measured value rotation
Analogue output (Option)
Pulse output (Option)
Event memory
Auxiliary input (Option)
Tariff change over, real energy consumption
Tariff change over, reactive energy inductive
Tariff change over, reactive energy capacitive
Clock

summer-/wintertime

Software Release
Serial number

LCD contrast
Password

Page 37= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Configuration data

Description Indication Setting range Settings

Current transformer, primary CT 1A .. 999,9MA "5000"A
Current transformer, secondary CT 1A .. 5A " 5" A
Voltage transformer, primary VT 100V.. 99,99kV " 400" V
Voltage transformer, secondary VT 100V .. 500V " 400" V
Serial interfaces RS485, RS232, Infrared

RS485 " 485"

Baud rate

MODBUS RTU 9.6, 19.2, 38.4, 57.6

1)

, 115.2kbps

1)

"38.4"

PROFIBUS DP

3)

9.6, 19.2, 93.75, 187.5, 500, 1500kbps

Protocol oFF, 1, 2, 3, 4 , 5, 6 "2"

RS232 " 232"

Baud rate 9600bps, 19.2kbps, 38.4kbps "38.4"
Protocol oFF, 1, 2, 3, 4 , 5, 6 "oFF"

Infrarot "InFr"

Baud rate 9600bps, 19.2kbps, 38.4kbps2),

57.6kbps2), 115.2kbps

2)

"19.2"

Protocol oFF, 1 "oFF"

Relay outputs

Number "S. " 1, 2 " 1"
Limit All measured values "L1 0.000 A"
Minimum connection time " . M.S" 1 .. 59 Seconds "00.01 M.S"

Exceeding

Underscoring
Three wire measurement (Option) " nEt" 3L, 4L "4 L"
Net frequency "FrE " Auto, 50Hz, 60Hz "Auto"
Measured value rotation "Pic "

Changing time 0 .. 9999 seconds "0000"
Display selection All displays no rotation

Analogue output "AnLo" 0/4-20mA "4 20"

Measured value All values apart from energy Sum real power
Minimum value "0000"
Maximum value "0000"

Pulse output "PuLS"

Measured value All reactive and real works T"00"

Pulse valency 0.000(W/var)h .. 99.99k(W/var)h "0.000 Wh"
Event memory "Prot"

Devices with 128k RAM 0-2000 Events 0 events
Devices with 512k RAM 0-9999 Events 1000 events

Auxiliary input "rSEt" oFF = Auxiliary input not used "oFF"

1 = external reset of the 15 minutes power mean value.
2 = External tariff change over
3 = Sychronize internal clock

1) These baud rates are not available in the version UMG503LS.

2) These baud rates are not available with any PC

3) The baud rates for PROFIBUS DP are mentioned within the GSD-file.
These baud rates cannot be changed at UMG503!

Page 38 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Konfigurationsdaten

Description Indication Setting range Settings

Tariff times

Work Txx 0x = Real work, consumption "00"

1x = Reactive work, capacitive
2x = Reactive work, inductive

x = Tariff number 0 .. 4
Time number "P. 0" 0 .. 9 " 0"
Week day "17.xx d.h."

Beginning 1 = Monday, .. 7 = Sunday 1 = Monday
End 1 = Monday, .. 7 = Sunday 7 = Sunday

Starting time

Hours 00 h .. 24 h. "xx.24 d.h."
Minutes/seconds 00.00 m.s .. 59.00 m.s. "00.00 m.s."

Date and time Date and time

Summertime "oFF" oFF, on, Eu oFF
Wintertime "oFF" oFF, on, Eu oFF

Software release "rEL" 4-digits loaded software release
Serial number "S. nr" 8-digits serial number
LCD Contrast "cont" 170 .. 230 185

Inner temperature "88°" 2-digits -

User password "PASS" 0000 .. 9999 "0000"

Page 39= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Current transformer

The ratio of the current transformer is set in conf igurati­on menu CONF . The secondary current can either be set
to ../1A or ../5A.
If you are in configuration menu CONF , the current
transformer ratio can be changed as follows:

A

A

SELECT CT

CONF

Select:
Confirm the selection
of the current
transformer menu with

key 2.

The text SELECT dis­appears.

Set:
Select the number to be
changed using key 1.
The selected number
flashes. The text EDIT
appears.
Change the selected
number using key 3.
Multiply the number
with a factor 10 with
key 2.

When the ratio of the current transformer is set, press key
1 as often, as no number is flashing any longer. EDIT
disappears.
With key 3 you move to the next menu. The ratio of the
current transformer is saved.

Voltage transformer

The ratio of the voltage transformer is set in configurati­on menu CONF. The secondary voltage can be set in the
range of 100V up to 500V.
If you are in configuration menu CONF, change the
ratio of the current transformer as follows:

A

A

SELECT CT

CONF

Select
Confirm selection of
current transformer
menu with key 3.
The text SELECT dis­appears.

Select
With key 3 you move to
the voltage transformer
menu.

Set
Using key 1 the num­ber to be changed is se­lected. The selected
number flashes. The
text EDIT appears.
With key 3 the selected
number is changed.
Key 2 multiplies the
number with a factor

10.

If the ratio of the voltage transformer is set, press key 1
as often, as no number is flashing any longer. EDIT
disappears.
With key 3 you move to the next menu. The ratio of the
voltage transformer will be saved.

A

A

CT

CONF

EDIT

Primary current

Secondary current

Primary voltage

Secondary voltage

kV

V

VT

CONF

EDIT

kV

V

VT

CONF

Page 40 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Modem

Via the RS232 interface, the UMG503 can be connected
to an external analogue modem. The connection between
UMG503 and the Modem is carried out via a "point to
point" cable.
For modem operation, the transmission protocol 5
(modem) must be selected for the RS232 interface.

Transmission protocol RS485

The following protocols can be selected:
off no protocol, interface disconnected
1 Standard Protocol
2 Modbus Protocol
3­4 Service Protocol
5 PROFIBUS DP (Slave), (Option)
6 Modbus RTU (Master)

*1)

Terminal resistance

If the device is connected to the end of a bus cable, the
bus cable must be terminated by terminal resistances.
The required terminal resistances are integrated within
the device and are activated in condition ON.

RS232 interface (Option)

The RS232 interface is suited for transmission of data
over a distance of 15m. The UMG 503 can be connected
directly via this interface to the COM-port of PC or an
external analogue modem.

The connection to PC must be carried out via a

zero

modem cable.

Transmission protocols RS232

off no protocol, interface disconnected
1 Standard protocol
2 Modbus RTU protocol
3­4 Service protocol
5 Modem
6 Modbus RTU (Master)

*1)

CONF

Type of interface

Protocol number

Baud rate

RS485 interface (Option)

The RS485 interface is suited for transmission of data
over a distance of 1200 m. Up to 31 UMG503 and a
master (PC or SPS) can be connected.
As PCs usually only have a RS232 interface, a suitable
interface converter must be connected between UMG
503 and PC. The distance between interface converter
and PC may be 4 m at maximum. The distance between
UMG 503 and interface converter may be 1200 m at
maximum.

Type of interface

Protocol number

Baud rate

CONF

*1)

The protocol 6 can run on one interface RS232 or RS485 only.

Diagr. Connection diagram RS485

Diagr. Connection diagram RS232

UMG503

UMG503

Page 41= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Device address

If several devices are connected via the RS485 interface,
a master device (PC, PLC) can distinguish them by the
device address only. Therefore each UMG 503 must have
another device address.
Device addresses can be given from 0 to 255.

Attention!
With PROFIBUS DP protocol device addresses from 0
to 126 are managed.

ADDR

CONF

Select
In menu CONF you
move to indication of
device address using
key 3.
In this example the
factory's presetting is
indicated as "1".

Change
With key 1 a number of
the device address can
be selected and be
changed using key 3.
The selected number is
flashing.

ADDR

EDIT CONF

The set device address can be called and changed in
menu CONF. Please move to menu CONF (See chapter
"configuration").

Save
If you have set the
desired device address,
please use key 1 as often
as no number is
flashing any longer.
Pressing key 2, the text
EDITdisappears, and
the indicated device
address will be saved.

ADDR

CONF

Page 42 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Data recording

The memory of UMG 503 is devided into three areas:
The event memory, the
peak and lowest value
storage and the ring buf­fer.
In the peak and lowest
value storage, all peak
and lowest values are
saved with date and
time.
In the ring buffer all
measured values are deposited, as long as they are marked
for storage.
In the Event memory all switchings of relay outputs and
breakdown of supply voltage are saved.

In delivery condition is

Data recording = on

and all memory areas can be written. If no data recording
should be carried out, data recording must be oFF.

CONF

Select
In menu CONF scroll
to display of data
recording "dAtA".
Confirm selection with
key 1.
The text EDIT appears.
The set data recording
is displayed and
flashing.
In this example, data
recording is on, which means, data are recorded.

Change
The set data recording
is flashing.
Using key 1 you can
change over between on
and oFF.
Confirming key 1, the
text EDIT disappears.
Confirming key 3, you
change to the program­ming of limits.

Pressing key 1 long, the programming is saved and you
change back to the first measured value display.

CONF

EDIT

CONF

EDIT

Page 43= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Internal relay outputs (Option)

The limits 1A up to 2C are assigned to the relay outputs
K1 and K2.
If one or more limits, which are assigned to an internal
relay output, exceeded, the corresponding relay releases.
To avoid too frequent switchings, a minimum connection
time is programmable for each relay output.

Limits

6 limits of measured values can be programmed for
supervision. Violations of these limits can be saved with
date and time within the event buffer.

External relay outputs

Additional relay outputs can be controlled via a bus
coupling and digital output clamps of the company
WAG O .
Each digital output clamp supervises one limit:

Digital output clamp DAK1 = Limit 1A
Digital output clamp DAK2 = Limit 1B
Digital output clamp DAK3 = Limit 1C
Digital output clamp DAK4 = Limit 2A
Digital output clamp DAK5 = Limit 2B
Digital output clamp DAK6 = Limit 2C

The connection of the UMG 503 to the bus coupling can
be carried out via the RS232 or RS485 interface. Both
devices, UMG503 and bus coupling, must have the same
interface.

Attention!

An event buffer must be reserved for the storage
of limit violations.

Limits can be positive (+) or negative (-). For positive
limits (+) , the sign is not indicated.

The limits are divided into the limit groups 1x and 2x
and have the following descriptions:

1A, 1B, 1C,

2A, 2B, 2C
The limits are assigned to two internal and 6 external
relays.

kW

M.S

L1
L2
L3

EDIT CONF

Minimum connection
time =10seconds

Violation at exceeding

Supervised measured
value = Sum real power
limit = 100kW

Limit group=2

Limit Symbol

Limit number = 2C

Diagr. Connection example for internal relay outputs

Relay outputs Limits
inter. external 1A 1B 1C 2A 2B 2C

K1 x x x
K2 x x x

DAK1 x

DAK2 x

DAK3 x

DAK4 x

DAK5 x

DAK6 x

Kx = Relay output(internal)
DAKx = Digital output clamp (external)

Diagr. Assignment of the limits

Attention!
On the relay contacts K1 and K2, no touchable
low voltage and life voltages may be used at the
same time.
The wiring for the relay outputs must be suitable
for voltage up to 300VAC against ground.





Page 44 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

t1 100kW were exceeded, relay K1 attracts.
t2 200kW were exceeded, relay K2 attracts.
t3 200kW were underscored. The programmed

minimum connection time for relay K2 is running.

t4 The minimum connection time is over and the

relay K2 releases.

t5 100kW were underscored. The programmed

minimum connection time for relay K1 is running.

t6 The minimum connection time is over, and relay

K1 releases.

Example: Real power, sequence chart

1234

1234

t1

Ein

K2

K1

Aus

t

Ein

Aus

t4t2 t3 t5 t6

P/kW

0

100

200

In menu CONF you
leaf to the indication of
the desired limit group
using key 3.
The limit number here
is indicated as 1A.
Now change over bet­ween the limit numbers
1A, 1B and 1C using
key 2.

M.S

CONF

Assign measured value:
Pressingkey 1, the
middle indication is
flashing, and a mea-
sured value can be se­lected.

The text EDIT appears.

Pressing key 2 and then
key 3 you leaf through
the measured value
indications.

A measured value can
be selected using key 1.
Please confirm with key

2.

M.S

CONF

EDIT

kW

M.S

L1
L2
L3

EDIT CONF

Attention!

To be able to distinguish between the measured
values "Sum real power" and "Real power
EMAX", the phases for "Real power EMAX"
are shown in the first line.

Assign limits

With key 1 you can
change between the
ciphers of the limit, the

minimum connection
time and the symbols
for underscoring / ex­ceeding.

If you have confirmed the selected measured value with
key 2, the first number of the middle indication flashes.

Minimum connection
time

Underscoring/
Exceeding

Limit

The selected numbers or symbols can be changed with
the keys 2 and 3 (see chapter Edit).
If the limit is set, please press key 1 as often as no
numbers flashing any longer. EDIT disappears.
With key 3 you reach the next menu point. The limit is
now saved.

Limit group

Example: Sum real power

limit number 2B

Assigned measured
value= Sum real power.

Switched at exceeding.

Minimum connection
time= 10 seconds

Limit=100kW

kW

M.S

L1
L2
L3

EDIT CONF

Example: Real power EMAX

Limit number1C
Measured value=
Sum "real power
EMAX"

Switches, when ex­ceeded.

Minimum connection
time= 10 seconds

Limit =100kW

kW

M.S

L1
L2
L3

CONF

kW

M.S

L1
L2
L3

CONF



Page 45= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Three wire measurement (Option)

The UMG503 is suited for measurement in networks
with or without neutral conductor. Networks with a neu­tral conductor are called four wire networks, without
neutral conductor are called three wire networks.
The option "three wire measurement" is needed for the
connection examples 5 and 6.

When option "three wire measurement" is released, you
can select between three wire measurement "3L" and
four wire measurement "4L" in menu CONF.

Select
In menu CONF you
move to the indication
of three or four wire
measurement using key

3.

In this example the four
wire measurement "4L"
is activated.

Change
With key 1 can be
switched between four
wire (4 L) and three
wire measurement (3
L).

CONF

EDIT CONF

Attention!

In networks without neutral conductor voltage
transformers must be used!

Diagr: Three wire measurement with two voltage trans­formers and two current transformers.. (Option "Three

wire measurement" required)

Diagr: Three wire measurement with two voltage trans­formers and three current transformers. (Option "Three

wire measurement" required)



Page 46 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Net frequency

The net frequency is determined from the measuring
voltage within the UMG 503. From this net frequency,
the scanning frequency for current and voltage inputs are
calculated.
For measurements with very distorted voltages, the fre­quency of the voltage fundamental cannot exactly be
determined any longer. Voltage distortion occurs in
measurements at consumers, which are driven with phase
changing controllings.
For measuring voltage, which shows strong distortion,
the corresponding stable net frequency should be set.
Distortion of the current does not affect the determinati­on of the frequency.

If the measuring voltage is missing, no net frequency can
be determined and no scanning frequency can be
calculated. Voltage, Current and all resulting values are
not calculated and indicated by zero.
If the current should be measured without measuring
voltage, the net frequency should be set at UMG 503.

The determination of the scanning frequency can either
be done automatically or programmed.

The following settings for the determination of the fre­quency are at your disposal:
"Auto" Automatical frequency
"50"Hz Stable frequency
"60"Hz Stable frequency

The proceeding for the determination of the frequency
can be called up and changed in the menu CONF.

Select
In menu CONF you
can leaf to the indicati­on of the frequency
deter-mination using
key 3.
In this example, the fre­quency is determined
automatically.

Change
Using key 1, the deter-
mination of the fre­quency is selected, and
the text "Auto" flashes.
In the indication, the
text EDIT appears.

Using key 3, you can
change over between
the two methods of fre­quency determination.

In this example a fix
frequency of 50Hz is
set.

Hz

SELECT

EDIT CONF

Hz

SELECT

CONF

Page 47= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Measured value rotation

All measured values are calculated two times per second
and can be displayed.
Normally the selection
and displaying of
measured values is
carried out via the keys
2 and 3. Additionally,
there is the possibility
of measured value rota­tion, which means to
show selected measured
values one after the other without keypress.
If no key is pressed for about 60 seconds, the measured
value rotation becomes active, if programmed.

For the measured value rotation, all displays, which are
retrievable by the key, are at your disposal.
The changing time for the displays can be set in the range
of

0 .. 9999 seconds

To activate the measured value rotation, at least one
measured value must be selected and the changing time
must be programmed for more than 0 seconds.

If a changing time is programmed with 0 seconds, there
is no change of the display.

If the changing time is bigger than 0, but only one
display has been selected, only this display is indicated.

CONF

CONFEDIT

CONFEDIT

Program changing times

Select
Please scroll to display "changing time Pic" in menu
CONF using key 3.
Confirm selection with
key 1.
The text EDIT appears.
The set changing time
is indicated and flashes.
In this example, a chan­ging time of 0 seconds
is indicated, which
means the measured
value rotation is not active.

Change
The set changing time
is flashing.
Confirm selection with
key 1.
The first digit of the
changing time is
flashing.
Now select the number
to be changed with key

1.
If a number is flashing, it can be changed using key 3.
If all numbers of the changing time are flashing, you can
change to the measured value selection with key 2.
If no number is flashing, you can change to the program­ming of the analogue output using key 3.

By a long press of key 1 you save programming and go
back to the first measured value indication.

Page 48 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

V

V

V

L3

L1

L2

Program measured value selection

Select
Please scroll to display
"changing time Pic" in
menu CONF using key

3.
Confirm selection with
key 1.
The text EDIT appears.
The set changing time
is indicated and flashes.
In this example, a chan­ging time of 0 seconds is indicated, which means the
measured value rotation is not active.

Change to the measu­red value selection with
key 2.
In this example, the
measured value indica­tion for voltage L
against N appears.
The measured value in­dication has not been
programmed for the
measured value rotation yet.

Pressing key 1 shortly,
the measured value in­dication becomes active
for the measured value
rotation.

Pressing key 1 again
shortly, the display
becomes inactive again.
Pressing key 1 longer,
you change back to the programming of changing time.
The number 1 of changing time is flashing.

By a long press of key 1 you save programming and go
back to the first measured value indication.

CONFEDIT

V

V

V

L3

L1

L2

Page 49= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Analogue output

All measured values except real and reactive work, can
be given out as a current via the analogue output. One
internal and six external analogue outputs can be pro­grammed at maximum.
The external analogue outputs are controlled via a bus
coupling and analogue output clamps of the company
WA G O . The connection of the UMG 503 to the bus
coupling is carried out via the RS232 or RS485 interface.
Both devices, UMG503 and bus coupling, must be con­nected to each other via the same interface. Each analogue
output can be assigned to

one measured value,
one scale starting value and

one scale end value
Only the internal analogue output in the UMG 503 can
be switched between

0-20mA and

4-20mA
additionally. For the external analogue outputs analogue
output clamps with the signal types

0-20mA,

4-20mA and

+-10V
are available.

Internal analogue output (Option)

For the operation of the internal analogue output an
external auxiliary voltage from 20V up to 30V DC is
required. The connectable maximum load is 500Ohm. If
the analogue output is loaded with a higher resistance,
the output range (20mA) is limited.

internal analogue output

Attention!

The internal analogue output can be used only,
if the option "analogue output" is released.

Diagr. Connection example, internal analogue output

CONF



UMG503

Hilfsspan­nung

0 .. 20mA

GND

Page 50 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Diagr.: Connection example for 2 UMG503 with analogue outputs to a PLC-analogue input module.

Grounding strip

Page 51= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Assign measured value

All measured values, which are configurated for the
measured value indication, except real and reactive
energy, can be given out of the analogue outputs. From
the measured value tables, the desired measured value,
"sum real power", for instance, are chosen and assigned
to the analogue output.

Please scroll to the display analogue output in menu
CONF.
Text "AnLo" flashes.
Now a measured value
table can be selected
with key 2. The measu­red value table for
voltage appears.
Now you can select a
measured value table
with key 3.
Select a measured value
key 1 from the measu­red value table and con­firm with key 2.
The text "AnLo" does not flash anymore and the se­lected value is indicated.

W

L1
L2
L3

CONF

Sum real power

External analogue outputs

The external analogue outputs are controlled via a bus
coupling and analogue output clamps of the company
WA G O . The connection between UMG 503 and bus
coupling can be carried out via RS232 or RS485 interface.
Both devices, UMG 503 and bus coupling, must be
connected with the same interface.

Indication in the configuration menu

External analogue outputs are indicated with the numbers
01 up to 06 in the UMG 503. The numbers correspond to
the sequence of the analogue output clamps connected to
the bus coupling.
The menu "external analogue output" can only be called
up, if the protocol number"06" (Modbus RTU Master) is
set at the UMG 503.

Transmission protocol

The MODBUS RTU protocol is used as transmission
protocol between the UMG 503 and the bus coupling of
the company WAG O . The UMG 503 becomes the master
and the bus coupling becomes the slave.
In the UMG 503 the protocol "06" (Modbus RTU Ma­ster) must be set.

Attention!

For the transmission via RS232, only "point to point"
connection with a maximum distance of 5m can be
achieved.
The RS485 allows a bus length of maximum 1200m.

External analogue output
number = 01

CONF

If you are in the menu
CONF, leaf to the indi-
cation of the external
analogue outputs using
key 3.
Analogue output num­ber 01 is indicated.

Please leaf to the
analogue outputs 02 up
to 06 using key 2 .

The following external analogue output clamps of the
company WAGO can be controlled by the UMG 503:

Item code WAGO Number of outputs Signal type

750-550 2 0 .. 10V

750-552 2 0 .. 20mA

750-554 2 4 .. 20mA

750-556 2 +- 10V

UMG503
(Master)

Bus coupling
(Slave)

Function clamps

Interface cable

Page 52 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

CONF

Scale starting
value

Scale end value

The text "AnLo" flas­hes. Press key 1.
The text EDIT appears
and the first number of
the scale starting value
is flashing.
By further pressing of
the key 1, each cipher
of the scale starting
value or the scale end
value can be selected.

Scale starting value and scale end value

The scale starting value and the scale end value can be
set in the indication range of the corresponding measu­red value

With key 3, the flashing
cipher can be changed.
With key 2 the decimal
point is moved.

In the first digit of the scale starting and scale end value,
the sign "-" can be set. The sign appears after the number
"9".

Set output range

The output range for the external analogue outputs can­not be programmed, as it is fixed for the used type of the
function clamps.
The output range of the internal analogue output of the
UMG 503 can programmed to 0 .. 20mA or 4 .. 20mA. In
delivery condition, the analogue output is preset to 4 ..
20mA.

The text "AnLo" is
flashing. Pressing key2,
the output range is in­dicated in "mA".
Output range
(4..20mA / 0..20mA)

Select the output range
with key 1. The text
EDIT appears.

Pressing key 3 you
select the output range
from 0 to 20mA.

After selecting the last cipher of the scale end value the
text EDIT disappears. Now change to the next menu
using key 3.

Sign

Scale starting value = - 0.100MW = - 100kW

Scale end value = 400kW

L1
L2
L3

W

EDIT

L1
L2
L3

W

M

k

CONFEDIT

CONF

EDIT

Page 53= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Example: Sum real power

On the internal analogue output of the UMG 503 the sum
of real power shall be given out as a current. As a
generator shall be switched on sometimes, the delivered
real power shall be retrieved as well. Real power supplied
is indicated by a "-" before the real power value.
The following settings are required:
Output range = 0 .. 20mA
Measured value = Sum real power
Scale start value = -100kW (Delivery to energy

supplier)

Scale end value = 400kW (Consumption)

With the selected settings, a power range of 100kW +
400kW = 500kW is covered. So is 500kW = 20mA.
1mA corresponds to 500kW/20 = 25kW.
If no real power is supplied or consumed, a current of
4mA is flowing.
If real power is supplied, a current smaller but 4mA is
flowing.

Example: cos(phi)

output range = 4 .. 20mA
Scale start value = 0.700inductive
Scale end value = 0.900capacitive
So the scale range is devided from 0, 400 to 16mA, and
cos(phi)1.000 corresponds to 16mA.

0mA 4mA 20mA10mA

0,700ind.

0,900kap.

1,000

16mA

CONF

Programming

The external analogue outputs can only be indicated and
programmed, when the protocol "06" (Modbus RTU Ma­ster) is set at the UMG 503. The programming of the
internal and external analogue output is very similar
except some small exceptions.

If the protocol "06" (Modbus RTU Master) is selected,
the first external analogue output "01" is indicated besides
the internal analogue output. Otherwise the indication of
the menu for the pulse output appears.

To display the other
external analogue out­puts "02" up to "06",
please press key 2. Con­firm the selected
analogue output with
key 1 and program it.
The text" AnLo" flas­hes.

0mA 4mA 20mA10mA

-100kW 400kW0kW

15mA

300kW150kW

ConsumptionSupply

If you are in the menu
CONF, you leaf to the
indication of the
internal analogue output
using key 3.
With key 1, the selected
analogue output is
confirmed and can be
programmed. The text
"AnLo" is flashing.

CONF

Page 54 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Pulse output (Option)

Corresponding to the mechanical energy meters, the UMG
503 has a pulse output as well. At the pulse output, the
energy of real and reactive energy meters can be given
out. The minimum pulse duration is 50 ms and the maxi­mum frequency is 10Hz.
If more than one pulse per second is given out by the
pulse output, the pulse gap is not proportional to the
power anymore. If less than one pulse per second is
given out by the pulse output, the pulse gap is proportio­nal to the power. The inaccuracy of the pulse gap is +­10ms.

Assign energy

Various measured values can be assigned to the pulse
output of the UMG 503

Without reverse running stop
Consumption T00, T01, T02, T03, T04
Supply T00, T01, T02, T03, T04

Reactive energy

Without reverse running stop
inductive (ind) T00, T01, T02, T03, T04
capacitive (cap) T00, T01, T02, T03, T04

Pulse valency
Iw=0,000Wh/Pulse

Real energySum Consumption

Scroll to the indication
of the pulse output in
menu CONF with key

3.

Wh

L1
L2
L3

CONF

T

Confirm the selection
using key 1.
The middle indication
is flashing and the text
EDIT appears.

Wh

L1
L2
L3

EDIT CONF

T

Switch to the measured
value selection pressing
key 2 .
The picture in the
margin appears.
With key 2 and key 3
the desired energy can
be assigned to the pul-
se output.

M Wh

kWh

Wh

L1
L2
L3

T

Confirm selection with
key 1.

The text EDIT appears.
With key 2 change into
the edit mode.
The first number is
flashing.

Wh

L1
L2
L3

EDIT CONF

T

To leave the menu, press key 1 so often until the text
EDIT disappears. Pressing key 3 you switch to the next
menu.

Attention!
When the pulse output is assigned to real energy
meter without reverse running stop, pulses are

given out for consumption and supply.
If the pulse output is assigned to the reactive
energy meter without reverse running stop,
pulses are given out for inductive and capacitive
load.

If the measured work exceeds the set pulse valency, so
that the maximum for the pulse output is exceeded, the
rest of the pulses are saved and given out later. Up to
32000 pulses are saved in the pulse memory.

Display example for the
pulse output:

Wh

L1
L2
L3

CONF

T

Diagr.: Connection example for pulse output



UMG503

Page 55= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

kWh

L1
L2
L3

EDIT CONF

T

Set pulse valency

The pulses from the UMG 503 can be assigned to certain
work. The energy per pulse is given as pulse valency Iw
in Wh/puls.

Iw =energy/pulse

The pulse valency must not be confused with a meter
constant. The meter constant is given in revolutions per
kWh.
The connection between pulse valency and meter constant
can be seen in the following correlations:

meter constant = 1/pulse valency

pulse valency = 1/meter constant

Example: Pulse valency

The pulse valency Iw should be destined for a three
phase network with connected consumers of maximum
P=400kW.
In one hour, a maximum work A of:

A = P * t (t = 1Stunde)
A = 400kW *1h
A = 400kWh can be consumed.

This means a pulse valency Iw of

Iw = A/pulse
Iw = 400kWh/pulse

Iw = 400kW
This means, that the pulse valency Iw must be set equal
or higher than 400kW at the UMG 503.

Example: Maximum power

A pulse collecting device can only manage a pulse valency
of 9999Wh/pulse.
What power can be transmitted at maximum?

Iw = A/pulse
The work A can be calculated with:

A = Iw * pulse

A = 9999Wh/pulss * pulse

A = 9999Wh

This means a pulse valency Iw of

Iw = A/pulse

Iw = 9999Wh/pulse,
which must be set at the UMG 503.

Pulse valency
Iw=0,000Wh/pulse

Real energy

Sum Consumption

In the menu CONF
scroll to indication of
the pulse output with
key 3.

Wh

L1
L2
L3

CONF

T

Confirm selection with
key 1.
The middle indication
flashes and the text
EDIT appears.

Press key 1 again, and
the first digit flashes.

Wh

L1
L2
L3

EDIT CONF

T

Using key 1, you switch
to the next digit.

With key 3 the number
will be changed.
With key 2, the decimal
point is moved.

Change with key 2 .

To leave the menu, press key 1 so often until the text
EDIT disappears. Pressing key 3 you switch to the next
menu.

Page 56 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Event memory

The following events can be saved in the event memory
with date and time:

- Deletion of the event memory,

- Relay outputs 1A, 1B, 1C on/off,

- Relay outputs 2A, 2B, 2C on/off,

- Auxiliary input on/off,

- Breakdown and return of the auxiliary voltage,

- Breakdown and return of the measurement
voltage,

- Reset of real power EMAX,

- Synchronization of the internal clock,

- Tariff change over 1/2.
The event memory can be read out with PC and the
programming and reading out software PSWbasic.
A breakdown of the measurement voltage is recognized,
if:

- the measurement voltage is smaller than 50% of the set
primary voltage of the voltage transformer

- and the breakdown lasts longer but 500ms without
interruption.

In the device a memory is available, which is divided
into the ring buffer and the event memory. The dimension
of the event memory can be programmed to determine
the number of events, that can be saved in the memory. If
the number is set to "0", the whole memory is available
for the ring buffer.

If the number of events is changed, the contents of the
event memory and ring buffer are deleted.

The dimension of the memory for event memory and
ring buffer is depending on the RAM of the UMG 503.

Memory

Event memory 128k RAM 512k RAM

Setting range 0 - 2000 0 - 9999
Presettings 0 1000

The number of events, that should be saved, can be
displayed and changed in the menu CONF.

Display
Scroll to the indication
of the event memory in
menu CONF using key

3.
In the example, the num­ber is set to 1000.

Number of events = 1000

Change
The digit to be changed
can now be selected with
key 1 and be changed
with key 3. The symbol
"EDIT" appears and the
selected number is
flashing.

EDIT CONF

128kRAM

up to 2000

events

512kRAM

up to 9999

events

CONF

Page 57= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Internal auxiliary input (Option)

The functions

- Reset real power EMAX,

- Tariff change over and

- Synchronizing the internal clock
can be controlled by the internal auxiliary input (option)
and external digital inputs of the WAGO I/O System.
Changes of condition of each auxiliary input are saved in
the event memors with date and time. The storage of the
changes of condition cannot be given up!

The assignment of the functions to the inputs is laid out
by the ciphers 1 to 6. If the internal auxiliary input
(option) and the external digital inputs are not used,
"oFF" appears in the indication. The producer's presetting
is "oFF".

The following assignment is possible:

Reset of real power EMAX

If an external reset occurs within the 15 minutes period,
the EMAX real power is deleted and a new period is
started.
If no external reset occurs within the programmed measu­ring period, the reset is done by the internal clock.
If there are less than 30 seconds between two resets, the
measurement period is reset and the EMAX real power is
deleted. The former measured value is not used for high­est nor lowest value storage and not saved in the ring
buffer although programmed.

Tariff change over

The tariff change over can be carried out externally via
the auxiliary input or internally via programmed swit­ching times. If the tariff change over is carried out via the
auxiliary input, the change over is carried out by the
tariff meters Tx1 and Tx2.
If there is no voltage at the auxiliary input, tariff meter
Tx1 is active. If there is voltage at the auxiliary input,
tariff meter Tx2 is active.

Synchronization of the internal clock

Inaccuracies of the internal clock can be corrected via
the keys on UMG 503 or via the auxiliary input.
If a voltage is connected to the auxiliary input, the clock
within the UMG 503 will be set to the next full hour.

Example 1
If the UMG 503 shows a time of 15:05, and a synchroni­zation is carried out, the time will be corrected to 15:00.

Example 2
If the UMG 503 shows a time of 15:35, and a synchroni­zation is carried out, the time will be corrected to 16:00.

Attention!

The assignment 5 and 6 cannot be program­med not before the assignment of a serial
interface of the UMG 503 to protocol "06"
(Modbus RTU Master) .

- = Locked
z = Via internal time program
i = Internal auxiliary input
e1 = external "digital input 1"
e2 = external "digital input 2"
e3 = external "digital input 3"

Table: Assignment of auxiliary inputs

Auxiliary inputs

internal extern.

Function oFF 1 2 3 4 5 6

Reset real power EMAX - - - i i e1 e1
Tariff change over z i z z z e2 e2
Synchron. of the int. clock - - i - i i e3



Page 58 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Set function = oFF
The tariff changeover is carried
out by the internal time program
"z".

For devices with the auxiliary voltage of "85 .. 265VAC,
120 .. 370VDC" the auxiliary input is activated with an
alternating voltage of 85 .. 265VAC .

CONF

For devices with an auxiliary voltage of "15 .. 55VAC, 20
.. 80VDC" the auxiliary input is activated with an alter-

nating voltage of 15 .. 55VAC or a direct current
voltage of 20 .. 80VDC.

For devices with an auxiliary voltage of "40.. 115VAC,

55.. 165VDC" the auxiliary input is activated with an

alternating voltage of 40.. 115VAC or a direct current
voltage of 55.. 165VDC.

Symbol text for the au­xiliary input

Diagr.: Auxiliary for direct current and alternating volta­ge

Diagr.: Auxiliary voltage for alternating voltage only

Select
In menu CONF move
to the indication of au­xiliary input using key

3

EDIT CONF

Change
Confirm with key 1.
The set function appears
and can be changed
with key 3.

The text EDIT appears.

If the function for the auxiliary input is set, press key 1 as
often as no digit is flashing any longer. EDIT disappears.
.
With key 3 you move to the next menu point. The function
is stored.

Programming

The external digital inputs can only be indicated and
programmed, if the protocol "06" (Modbus RTU Master)
is set at the UMG503.
The functions

- Reset real power EMAX,

- Tariff changeover and

- Synchronization of internal clock
can be programmed according to the table "assignment
of auxiliary inputs" on page 50.

Attention!

The wiring for the auxiliary input must be suitable for
voltages up to 300VAC against ground.

On the internal auxiliary input,
only the tariff changeover is ac­tive.

UMG503

AC/DC

Page 59= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Tariff change over

For energy measurement, which should be carried out in
certain periods, four tariffs are available:
T01 .. T04 Real energy consumption and real power

EMAX,
T11 .. T14 Reactive energy, inductive and
T21 .. T24 Reactive energy, capacitive.

The tariff changeover is carried out internally via a time
program or externally via the auxiliary input. To each of
the three tariff groups T0x, T1x and T2x 10 changeover
times can be assigned.
Work meter Tx0 is not programmable.

External tariff change over (option)

The first two work meters can be changed over via the
auxiliary input.
When the contact is open, work meter Tx2 is active.
When there is voltage on the auxiliary input, work meter
Tx1 is active.
When the auxiliary input is programmed for tariff change
over, only the work meters Tx3 and Tx4 can be cont­rolled via the time program.

Attention!

The energy meters (Tariffs) cannot be deleted
individually. If reactive or real energy is deleted,
all corresponding energy meters (tariffs) are de­leted.



Energy meter

Controlled via
Internal time program
Auxiliary input

Real energy

Without reverse running stop T50
Consumption, real power EMAX T00 T01 T02 T03 T04
Supply T30

Reactive energy

Without reverse running stop T40
inductive T10 T11 T12 T13 T14
capacitive T20 T21 T22 T23 T24

Wh

D.H

M.S

L1
L2
L3

CONF

T

Changeover time

Symbol Number

Starting
time:

-Hour

-Second

-Minute

Sum

Energy meter

Symbol Energy type Number

Real energy

Consump­tion

Week day

- beginning

- end

Page 60 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Internal tariff changeover

The internal tariff changeover is carried out via time
programs. When the auxiliary input is programmed for
tariff changeover, only the work meters Tx3 und Tx4 can
be controlled via time program.
The time program can be programmed by PC or directly
at UMG 503.

Assignment of the week days:

1 - Monday
2 - Tuesday
3 - Wednesday
4 - Thurday
5 - Friday
6 - Saturday
7 - Sunday

For each three selectable work up to 10 changeover times
can be programmed. In the changeover time the starting
time is determined for the corresponding work meter in

Week day, beginning/end and

Hours/Minute
If energy measurement (P3) does not follow energy mea­surement (P1), the changeover time for the end of energy
measurement must be laid out to tariff zone Tx0, which
is not programmable. In the example, this is changeover
time "P2".

If the starting time is set to "24h 00:00", the correspon-
ding energy meter is not activated.

In menu CONF move
to the indication of
work meters using key

3. Here consumed real
work was selected.

With key 2 you can sel-
ect the number (0-9) of
the changeover time.

Pressing key 1, you can select the number and the text
EDIT appears.
Changeable Values:
Week day beginning
Week day end
Start time - Hour
Start time - Minute
Start time - Second
The selected numbers
can be changed using
the keys 2 and 3 (see
chapter Edit).

If the changeover times are set, press key 1 as often as no
number is flashing any longer. EDIT disappears.
With key 3 you move to the next menu point. The time
program is saved.

Programming

Wh

D.H

M.S

L1
L2
L3

EDIT CONF

T

12:00

P3

P2

P1

T00

T01

T04

T03

T02

09:0000:00

P0

06:00 24:00

Diagr. Energy meter T0x, real energy consumption

Wh

D.H

M.S

L1
L2
L3

CONF

T

Page 61= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Clock

Date and time are needed as time information for highest
and lowest value and storage of measured values in the
ring buffer.
Date and time are set to the Middle European summer
time.

Select
In menu CONF move
to the indication of date
and time with key 3.
In this example the date
is 10.08.1998 and the
time is 14:27:15.

Change
With key 1 a digit can
be selected and chan­ged with key 3.
The selected number is
flashing.
The text "EDIT" ap­pears. Date and time
stop.

Date and time can be called up and changed in menu
CONF. Therefore please change to menu CONF (See
chapter "configuration").

Y.M

D.H

M.S

CONF

Day Year

Month

Minute Second Hour

Y.M

D.H

M.S

EDIT CONF

Save
When you have set the
actual date and time,
please press key 1 as of­ten as no number is
flashing any longer.
Pressing key 2, the text
EDITdisappears and
date and time run with
their new settings.

Y.M

D.H

M.S

CONF

Comment:
The device is Year 2000 concurring according to DP2000­1:1998 of BSI (British Standards Institution).

Summer-/Wintertime changeover

The UMG503 can carry out an automatical summer and
wintertime changeover. The following possibilities are
available:

oFF - No summer and winter time changeover.
on - Your own changeover times

Eu - Listed changeover times
At the date, which is marked by an arrow downwards,
time leaps back from 03:00 to 02:00.
At the date, which is marked by an arrow upwards, time
leaps forward from 02:00 to 03:00.

Your own changeover times
If summer-/winter changeover is "on", both changeover
times can be entered individually. The changeover times
within the list are not valid.

Listed changeover times
In UMG503 a list of changeover times up to year 2020 is
deposited. In this list, the last weekend in March and the
last weekend in October of each year has been respected.
If summer-/wintertime is set to "Eu", the changeover
times of this list are used.

Y.M

D.H

M.S

CONF

Y.M

D.H

M.S

CONF

Select
In menu CONF you can
scroll to the display of
date and time using key
3 and then with key 2 to
the summer time chan­geover.
In this example, the date

25.03.2001 is indicated.

Pressing key 2 again,
the time for winter
changeover is indicated.

Winter time changeover

Summer time changeover

Page 62 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

LCD contrast

The best view for the LCD display is "from below". The
contrast of the LCD display can be adapted by the user.
The contrast setting is possible in the range of 170 to 230
in 5 point steps.

230 = very light

170 = very dark
In order to reach the optimum contrast for the whole
operating temperature range, the inner temperature is
measured within the device, and the contrast setting is
corrected automatically. This correction will not be indi­cated in the contrast settings indication.

Change
With key 1 the contrast
setting is selected, and
the number is flashing.
In the indication the text
EDIT appears.
Increase the contrast
setting in 5 point steps
using key 3.
If 230 is exceeded, the
value jumps back to

170.

EDIT CONF

Selection
In menu CONF move
to indication of LCD
contrast using key 3.
In this case the inner
temperature is 28°C
and the contrast setting
is 185.

Inner temperature

Contrast
setting

CONF

Serial number

Each device has its own 8 digit serial number, which
cannot be changed by user.
For certain device variants the user can release functions
(options) later on. In that case the serial number is
needed in the manufacturing works.
For each device passwords are deposited in the manufac­turing company for releasing certain functions (options).

Software Release

The software within the device is improved and expan­ded continuously. Therefore the condition of software is
marked by the software release. The software release
cannot be changed.

Select
In menu CONF move
to the indication of the
software release using
key 3.
In this case the software
release is indicated

1.210.

CONF

The software release can be called up in menu CONF.
Please move to the menu CONF (See chapter "conf i­guration").

CONF

Example:
Serial number = 5300 0003

Page 63= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Password

Certain functions are protected by a user password.
There are three types of passwords:

Clearance password (8-digits)
User password (4-digits)
Master password (4-digits)

CONF

Select
In menu CONF you
move to the indication
of the password with key

3.
In the basic setting a
0000 0000 is indicated.

EDIT CONF

Input
With key 1 you select
the digit to be changed.
The text EDIT appears
within the display.
With key 3 you change
the selected digit.

Clearance password

In the various device variants functions are available as
an option. These function expansions can be released in
the manufacturing works, when ordering.
When later a functional expansion shall be released by
the user, a clearance password is needed with 8 digits.
This password is deposited in the manufacturing works.

Functional expansions (options), that can be released,
are:

Relay outputs
Impuls output
Analogue output
RS232 interface
Auxiliary input
Infra red interface
Three wire measurement
PROFIBUS DP (Slave)

To release a functional expansion via the clearance pass­word, please proceed as follows:

Function

User password or Ma­ster password

CONF

Clearance password

CONF

Clearance password "0000 0000"

Save
When the password is put in, please confirm key 1 as
often as no digit is flashing any longer and confirm with
key 2.
When the password is accepted, the password is deleted
and 0000 0000 appears in the indication.
Now the released functional expansion can be called up
in the programming or configuration menu.

Page 64 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Master password

The four digit master password is needed for service
purpose only and it is not announced to the user.

Function Description

0004 Delete user password
3846 software update
7645 Restore delivery conditions of the device.

After calling function "0004" the user password is reset
to delivery condition:

User password = "0000".
Now programming can be allowed with user password
"0000" and configuration with function "0002".

The input of the master password is done just like the
input of the user password.

User password

With the four digit user password the user can protect the
programmed data and configuration against unintentio­nal change. The programming and configuration will
nevertheless be displayed.
In delivery condition the user password is "0000".
If the user cannot remember the user password, it can be
changed with the master password only.
The protection of the user password is not available for
access to data within the UMG503 via the serial inter­faces.

There are four functions for the user password at your
disposal:

Function Description

1 Lock programming and configuration
2 Admit programming and configuration.
3 Input user password
4 Delete user password.

To activate a function, the user password and the desired
function must be put in the password menu.
A new user password can be put in, when it was deleted
with function 4 by putting in the old user password. A
deleted password is indicated with "0000".

EDIT CONF

Input
Select the digit to be
changed using key 1.
The text EDIT is
flashing in the indi-ca­tion. The selected digit
is flashing.
Change the selected
number using key 3.

Save
When you have put in the password and function, press
key 1 as often as no digit is flashing any longer and
confirm with key 2.

Function

User password or ma­ster password

CONF

Page 65= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Transmission protocols

For the connection of the UMG 503 to existing field bus
systems, two transmission protocols are at your disposal:

- PROFIBUS DP (Slave)

- Modbus RTU (Master and Slave)

The following protocols can be operate via RS485 inter­face:
off no protocol, interface is not active.
1 Reserved
2 Modbus RTU (Slave)
3­4 Service protocol
5 PROFIBUS DP (Slave), (Option)
6 Modbus RTU (Master)

*1)

The following protocols can be operate via RS232 inter­face:
off no protocol, interface is not active.
1 Reserved
2 Modbus RTU (Slave)
3­4 Service protocol
5 Modem
6 Modbus RTU (Master)

*1)

*1)

Protocol 6 can run only on one interface, RS232 or RS485, at the

same time.

Service protocol

The service protocol is used for calibration and testing
purpose in the manufacturing works only.

Modem

For the connection of the UMG 503 to a modem, the
protocol "modem" must be set at the UMG 503.
Operation of the UMG 503 via modem is only safe with
modems tested by the producer.

Page 66 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Modbus RTU

With Modbus RTU protocol all addresses of the follo­wing tables can be retrieved.
Table 1a Measured values (floating point format)
Table 1b Measured values (floating point format)
Table 2 Energy (floating point format)
Table 3a Time information for min. and maximum

values and system time

Table 3b Time information for min. and maximum

values and time of summer/ winter

changeover
Table 4 Avaraging times of mean values
Table 5 Internal control word
Table 6a Measured values, integer format
Table 6b Mean values, integer format
Table 6c Maximum values, integer format
Table 6d Minimum values, integer format
Table 7 Energy, integer format
Table 8 Scale of measured values, which are called

up in integer format
Table 9 In- and outputs
Table 10 EMAX-peak values

Transmission mode

RTU- Mode with CRC-Check.

Transmission parameters

Baud rate
RS232 : 9.6,19.2 and 38.4
RS485 : 9.6,19.2, 38.4, 57.6 and 115.2

Data bits : 8
Parity : none
Stop bits (UMG503) : 2
Stop bits (extern) : 1 or 2

Realized functions

Read Holding Register, function 03
Preset Single Register, function 06
Preset Multiple Registers, function 16

Data formats

The data are in the following formats at your disposal:
char: 1 Byte (0 .. 255)
word: 2 Byte (- 32 768 .. + 32 767)
long: 4 Byte (- 2 147 483 648 .. + 2 147 483 647)

The sequence of the bytes is high before low byte.

Example: Reading of system time
The system time is deposited under address 3000 in table

1. The system time is deposited in 6 bytes with year,
months, day, hours, minutes and second in the format
"char" = 0..255. The device address of the UMG 503 is
determined as address = 01.

The "Query Message" looks as follows:
Description Hex Comment
Device address 01 UMG503, Address = 1
Function 03 "Read Holding Register"
Start address Hi 0B 3000dez = 0BB8hex
Start address Lo B8
No. of values Hi 00 6dez = 0006hex
no. of values Lo 06
Error Check -

The "Response" of UMG503 can look as follows:
Description Hex Comment
Device address 01 UMG503, Address = 1
Function 03
Byte Counter 06
Data 00 Year = 00hex = 00dez = 2000dez
Data 0A Month = 0Ahex = 10dez = Oct.
Data 0C Day = 0Chex = 12dez
Data 0F Hour = 0Fhex = 15dez
Data 1E Minute = 1Ehex = 30dez
Data 0A Second = 0Ahex = 10dez
Error Check (CRC) -

Page 67= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

PROFIBUS DP (Option)

The UMG 503 corresponds to the field bus norm PROFI­BUS DP, DIN E 19245 part 3 as a slave device. The
device is listed by the PROFIBUS user organisation e.V.
with the following entries:
Device description : UMG 503
Ident-Number : 044C HEX
GSD : U503044C.GSD

For transmission of measured values with the PROFI­BUS DP protocol integer formats are used by the UMG
503 such as char, int and word.

The UMG503 is suitable for the connection to controls
of the type DP-Master Class 1 (DP M1). The maximum
baud rate is 1500kbps.

Configuration of UMG 503

The following requirements and settings are necessary
for the operation of UMG 503 at Profibus DP:

- A RS485 interface,

- A device address,

- Protocol "05" = PROFIBUS DP

The baud rate is determined automatically between the
master (SPS) and slave (UMG503). The setting of the
device address is described in chapter "device address".

In menu CONF scroll
to the indication of
RS485 interface with
key 3.

Manufacturer's set­tings:

Baud rate = 38,4kbps
Protocol = 02

CONF

Confirming key 1
twice, the lower indica­tion is flashing.

The text EDIT appears.

The protocol can now
be changed.

CONFEDIT

CONF

EDIT

Using key 3 you select
Protocol "05".
If protocol "05" is en­tered, the baudrate is set
to "Auto" automatical­ly and cannot be chan­ged.

Pressing key 1 again,
the text EDIT disap-
pears.

CONF

Protocol



Hints and examples for DP can be found on our
homepage.

Page 68 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Higher protocol

Dependant on the format of the measured values to be
transmitted, up to 21 measured values can be transmitted
from UMG 503 to PLC by PROFIBUS DP protocol
cyclically.
To transmit more measured values from UMG 503 than
determined in the GSD file, you must use a GSD file,
which determines the values to be transmitted during
operation.
With the program PSWbasic, which belongs to the con­tents of delivery, a GSD f ile is created.In this GSD-file a
32 words large output range and a 28 words large input
range is determined.
In the output range, the PLC can save the desired measu­red value addresses in the control words 4 to 32 and in
the input range, the corresponding measured values can
be retrieved in the control words 2 to 28. A control word
consists of 2 Byte.
For controlling purpose, a number is sent by each request
for new measured values. The requested measured va­lues are written to the input range, when the PLC replies
the request number.
Please note, that the request number must be written to
the measured value addresses into the output range befo­re, as thereby it is ensured, that the read measured values
correspond to the new measured value addresses.

With the "higher protocol" you can call up data from
the following tables:
Table 1a - Measured values, floating point format
Table 1b - Measured values, floating point format
Table 2 - Energy, floating point format
Table 3a - Time information (Min. and max. values)
Table 3b - Time information (Min. and max. values)
Table 6a - Measured values, integer format
Table 6b - Mean values, integer format
Table 6c - Maximun values, integer format
Table 6d - Minimum values, integer format
Table 8 - Scale of measured values

The measured values from table 4 are scaled by the
addresses in table 3.
The scaling of the measured values depends on the ratios
for current and voltage transformer set at UMG 503 and
must be read by changing the ratios only.

The output and input range can be read out and overwrit­ten by the control words 1 and 2 from PLC.
With the "Remote bits" an output is selected for con­trolling by the PLC.

Profibus DP V0

In Profibus version "DP V0" only a cyclic data transmis­sion is possible between master PLC and slave UMG503.
The transmission data have been determined in the GSD
file and the PLC has to request this data set from
UMG503 (Slave).

Profibus DP M1

In Profibus version (DP M1) even none cyclical data can
be retrieved additionally to the cyclic data. Please note,
that calling none cyclical data (DP M1) takes a longer
time than using cyclical communication services (DP
V0).
The functional expansion for none cyclical data trans­mission is specified according to the technical directive

2.082.

Page 69= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Control word1 In- and outputs

bit 0..1 Tariffs 0-3,real work, consumption
bit 2..3 Tariffs 0-3, reactive work, inductive
bit 4..5 Tariffs 0-3, reactive work, capacitive
bit 6 Remote tariff change over
bit 7 Synchronization of internal clock, 0 1
bit 8 Reset real power EMAX, 0 1
bit 9 Remote reset of real power EMAX
bit 10 Change over winter / summer time,

0 = winter time, 1 = summer time
bit 11 Remote change over winter / summer time
bit 12 Relay output 2, 0=Off, 1=On
bit 13 Remote relay output 2
bit 14 Relay output 1, 0=Off, 1=On
bit 15 Remote relay output 1

Control word 2 In- and outputs

bit 0..11 Analogue output
bit 12..13 free
bit 14 Remote analogue output
bit 15 cur rent range, 0 = 0..20mA, 1 = 4..20mA

Control word 3

byte 1 Request number, 0-255
byte 2 free

Control word 4 Address of f irst measured value
Control word 5 Address of second measured value
Control word 6 Address of third measured value

.. ..

Control word 32

Output range of PLC (32 words=64 Byte)

Input range of PLC (28 Worte = 56 Byte)

Control word 1

byte 1 Called back request number
byte 2 Condition of limits (see page 39)

Bit 0 = 1A, 1=Limit output active.

Bit 1 = 1B

..

Bit 5 = 2C

Control word 2 1. Measured value
Control word x 2. Measured value
Control word x 3. Measured value

.. ..

Control word 28

Diagr. Data transmission with higher protocol

UMG503

SPS

Page 70 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Example: Measured values in integer format

The UMG503 and PLC are set for "Higher protocol".
There is a current transformer of 500A/5A and a voltage
transformer of 400V/400V.
The currents in L1, L2, L3 and the sum of real power
should be transmitted in integer format.

Read out scale
The scale of the measured values depends on the set
current and voltage transformer ratios, which are set at
UMG 503, and must only be read after a change of those
ratios

The scales of the measured values can be found in table

8.
Scale Address

Currents 9100
Power 9102

Within the PLC the output range with control words (4-

5) must be overwritten for the scale and afterwards with
the control word (3) for the request number.
Control word 1 = In- and outputs "0000" (Example)
Control word 2 = In- and outputs "0000" (Example)
Control word 4 = Scale "9100" (Currents)
Control word 5 = Scale "9102" (Power)
Control word 3 = Request number "1" (Example)
Control word 6..32 free

After that, the following scales are available in the input
range of PLC:

Control word Measured value Contents

1 Request number 1
2 Scale, Currents 0 (*1)
3 Scale, Powers 3 (*1000)

4..28 not defined

Read measured values
The measured values in integer format can be found in
table 6. The following addresses can be found in table 6.

Measured value Address

Current L1 8000 A
Current L2 8001 A
Current L3 8002 A
Real power, Sum 8024 W

Control word 1 = In- and outputs "0000" (Example)
Control word 2 = In- and outputs "0000" (Example)
Control word 4 = Measured value address "8000"

(Current in L1)

Control word 5 = Measured value address "8001"

(Current in L2)

Control word 6 = Measured value address "8002"

(Current in L3)

Control word 7 = Measured value address "8024"

(Real power sum.)
Control word 3 = Request number "2" (Example)
Control words 8..32 free

After that the following measured values are available in
the input range of the PLC:

Control word Measured value Contents (Example)

1 Request number 2
2 Current L1 100 (A)
3 Current L2 120 (A)
4 Current L3 140 (A)
5 Real power, Sum. 82800 (W)

6..28 not defined

Page 71= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Example: Measured values in foating point format

The UMG 503 and the PLC are suited for "higher proto­col". A current transformer of 200A/5A and a voltage
transformer of 400V/400V have been set.
Real energy consumption and reactive power inductive
should be transmitted in floating point format and volta­ge in L1, L2 and L3 against earth in integer format.

Read scale
The scale of the measured values depends on the set
current and voltage transformer ratios only und must
only be read after changing those ratios.
The scale for voltage measured values can be found in
table 8.

Scale Address

Voltage 9101

Within the PLC, the output range must be overwritten
with control word 4 for the scales of voltage and with
control word (3) for the request number.
Control word 1 = In- and outputs "0000" (Example)
Control word 2 = In- and outputs "0000" (Example)
Control word 4 = Scale "9101" (Voltage)
Control word 3 = Request number "3" (Example)
Control words 5..32 free

After that, the following scales are available for voltage
in the input range of PLC:

Control word Measured value Contents

1 Request number 3
2 Scale, voltage0 (*1)

3..28 not defined

Read measured values
The measured values in floating point format can be
found in table 1. The following addresses can be read in
table 1:

Measured value Address Contents (Example)

Voltage L1-N 1012 230 (V)
Voltage L2-N 1017 225 (V)
Voltage L3-N 1014 235 (V)
Real energy cons. 2000 60444 (Wh)
React. energy ind. 2020 23501 (varh)

In the PLC the output range must be overwritten with the
control words (4-7) for the measured value addresses
and afterwards with control word (3) for the request
number.
Control word 1 = In- and outputs "0000" (Example)
Control word 2 = In- and outputs "0000" (Example)
Control word 4 = Measured value address "1012"

(Voltage L1-N)

Control word 5 = Measured value address "1013"

(Voltage L2-N)

Control word 6 = Measured value address "1014"

(Voltage L3-N)

Control word 7 = Measured value address "2000"

(Real energy, consumption)
Control word 8..10 = free
Control word 11 = Measured value address"2020"

(Reactive energy ind.)
Control word 12..14 = free
Control word 3 = request number "4" (Example)
Control words 15..32 = free

After that the following measured values are available in
the input range of the PLC:

Control word Measured value Contents (Example)

1 Request number 4
2 Voltage L1-N 230 (V)
3 Voltage L2-N 225 (V)
4 Voltage L3-N 235 (V)

5..8 Real energy cons. 604,44(Wh)

9..12 Reac. energy ind. 235,01(varh)

13..28 not defined

The voltages each are transmitted in one word (2 Byte)
and real and reactive energy each in 4 words (8Byte).
Therefore real and reactive energy need 4 control words
each and the measured value of reactive energy is depo­sited from control word 9.

Page 72 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Create a GSD file

The program PSW 503 belongs to the contents of delive­ry for the device and includes the module "PROFIBUS
configuration". Measured values and in- and outputs can
be selected for transmission to PLC with that module.
As a result of the configuration, a GSD f ile for the PLC
is created.

To bind in a GSD file

The binding of the GSD file in a program is carried out
by the customer. It is very different from application to
application.
Instructions for binding in a UMG 503 in a Siemens SPS
S7 (CPU 315-2DP) can be downloaded from the internet
page "http://www.janitza.de".

GSD file

The GSD file is a f ile specific for the device, in which
the transmission parameters and the kind of measuring
data between PROFIBUS Master and the PROFIBUS
Slave are laid. The PROFIBUS Slave here is the UMG
503 and the PROFIBUS Master is a PLC, for instance.
Depending on the format of the values to be transmitted,
at minimum 7 measured values and at maximum 21
measured values can be transmitted.
If more measured values are required, a GSD file must
be created, that determines a 32 word large output range
and a 28 words large input range. In the output range, the
PLC can deposit the desired measured value addresses
and retrieve the corresponding measured values within
the input range. If the addresses in the output range are
not changed further, the UMG 503 deliveres new measu­red values continuosly to the input range of PLC.
This method of retrieving measuring data is depicted as
"higher protocol" in the description.

Diagr. Two UMG 503 and one PLC at PROFIBUS DP

Protokolle

Standard-Protokoll

Protokollablauf

Der Protokollablauf unterscheidet sich in den Betriebsarten

 Daten an ein Gerät senden,
 Daten von einem Gerät empfangen.

Daten an ein Gerät senden

Zeichenbedeutung Hex-Wert Datenrichtung

PC Gerät
Protokollanfang (76) --->
Geräteadresse (00..FF) --->
Steuerbyte (45) --->
(Echo) <--­Anzahl der Datenbytes
einschließlich Startadr.
(03..0F) --->
(Echo) <--­Startadresse lsb (00..FF) --->
(Echo) <--­Startadresse msb (00..FF) --->
(Echo) <---

1. Datenbyte (00..FF) --->
(Echo) <---

2. Datenbyte (00..FF) --->
(Echo) <--­...
...
n. Datenbyte (00..FF) --->
(Echo) <--­Falls alle Echos
korrekt waren:

Echo o.k. (78) --->

wenn nicht:

Echofehler (7A) --->

Protokollende (79) <---

Daten von einem Gerät empfangen

Zeichenbedeutung Hex-Wert Datenrichtung

PC Gerät

GSD-Datei

PROFIBUS
DP Master

PROFIBUS

DP Slave

PROFIBUS

DP Slave

SPS

UMG503UMG503

Page 73= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Serial interfaces

The UMG503 is available with the serial interfaces RS232, RS485 and Infrared. In the basical edition, at least one
interface RS485 or RS232 is at your disposal. The interfaces can be used at the same time, even with different
protocols. Please note, that not all combinations of interfaces and protocols are allowed.

UMG503 - RS485 - WAGO I/O

UMG503

RS232/RS485

Protocol 6 = Modbus RTU (Master)

Bus coupling (Slave)

WAGO I/O SYSTEM

UMG503 - RS485 - PLC

Protocol 5 = Profibus DP (Slave)

RS485

SPS

UMG503

UMG503

UMG503 - RS232- PC

Direct connection to PC via zero mo­dem cable.

The maximum distance between PC and
UMG503 can be 5m at maximum.

Zero modem cable

RS232

RS232

UMG503

Protocol 2 = Modbus RTU (Slave)

PSWbasic or custo-

mer software

UMG503 - RS485/RS232 - PC

For the connection to PC an interface
converter from RS485 to RS232 must
be used.
The maximum distance for RS485 is
1200m and for RS232 about 5m.

Interface converter

RS485/RS232

RS485

RS232

UMG503

RS232

RS485

PSWbasic or customer

software

Protocol 2 = Modbus RTU (Slave)

UMG503

UMG503 - Modem - PC

RS232

RS232

UMG503

Modem

RxD TxD on

PSWbasic

Protocol 5 = Modem

Modem

RxD TxD on

Page 74 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Tables

Overview

Table 1a Measured values, floating point format
Table 1b Measured values, floating point format
Table 2 Energy, floating point format
Table 3a Time information for minimum and maximum values and system time
Table 3b Time information for minimum and maximum values and summer/winter changeover
Table 4 Averaging time of mean values
Table 5 Internal control word
Table 6a Measured values, integer format
Table 6b Mean values, integer format
Table 6c Maximum values, integer format
Table 6d Minimum values, integer format
Table 7 Energy, integer format
Table 8 Scale of measured values, which are retrieved in integer format.
Table 9 Inputs and outputs
Table 10 EMAX peak values

Data formats

The data are available in the following formats:

char : 1 Byte (0 .. 255)
word : 2 Byte (- 32 768 .. + 32 767)
long : 4 Byte (- 2 147 483 648 .. + 2 147 483 647)
float : 4 Byte (IEEE754)
double: 8 Byte (IEEE754)

The sequence of the bytes is high before low byte.

Page 75= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Table 1a

Measured values in floating point format

Description Index Address(dez) r/w1)Type Unit Comment

DPV1 DPV0/MODB.

Current 64 1000 r meas. val.2)A L1, L2, L3
Voltage N-L 65 1012 r meas. val.2)V L1, L2, L3
Voltage L-L 66 1024 r meas. val.2)V L1-L2, L2-L3, L1-L3
Real power 67 1036 r meas. val.2)W Sign -=Supply, +=Consumption
Apparent power 68 1048 r meas. val.2)VA L1, L2, L3
Reactive power 69 1060 r meas. val.2)var Sign -=cap, +=ind
cos(phi) 70 1072 r meas. val.

2)

Sign -=cap, +=ind
Frequency 71 1084 r meas. val.2)Hz L1, L2, L3
Real power, sum 72 1096 r sum

3)

W Sign -=Supply, +=Consumption

Apparent power, sum 1100 r sum

3)

VA

Reactive power, sum 1104 r sum

3)

var Sign -=cap, +=ind

cos(phi), sum 73 1108 r sum

3)

Sign -=cap, +=ind
Total harmonic distortion _U
Measured value 1112 r float[3] % L1, L2, L3
Maximum value 1115 r float[3] % L1, L2, L3
Total harmonic distortion _I
Measured value 1118 r float[3] % L1, L2, L3

74 1120
Maximum value 1121 r float[3] % L1, L2, L3
Partial harmonics _U
Maximum value 1124 r float[20][3] V Partial harmonics 1-20; L1, L2, L3

75 1132

.. ..

79 1180
Partial harmonics _U
Measured value 1184 r float[20][3] V Partial harmonics 1-20; L1, L2, L3

80 1192

.. ..

84 1240
Partial harmonic _I
Maximum value 1244 r float[20][3] A Partial harmonics 1-20; L1, L2, L3

85 1252

.. ..

89 1300
Partial harmonic _I
Measured value 1304 r float[20][3] A Partial harmonic 1-20; L1, L2, L3

90 1312

.. ..

94 1360
Real power EMAX 1365 r float W Sign -=Supply, +=Consumption

95 1372

96 1384

1)

r/w = read/write

2)

measured value {float: measured value[L1-L3], mean value[L1-L3], lowest value[L1-L3], peak value[L1-L3]}

3)

sum {float: measured value, mean value, lowest value, peak value}

Page 76 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Table 1b

Measured values in floating point format

Description Index Address(dez) r/w1)Type Unit Comment

DPV1 DPV0/MODB.

Total harmonic distortion _U
Mean value 1390 r float[3] % L1, L2, L3
Total harmonic distortion _I
Mean value 1393 r float[3] % L1, L2, L3

97 1396
Partial harmonics _U
Minimum value 1400 r float[20][3] V Partial harmonic 1-20; L1, L2, L3

98 1408

.. ..

102 1456
Partial harmonics _I
Minimum value 1460 r float[20][3] A Partial harmonic 1-20; L1, L2, L3

103 1468

.. ..

107 1516
Partial harmonics _U
Mean value 1520 r float[20][3] V Partial harmonic 1-20; L1, L2, L3

108 1528

.. ..

112 1576
Partial harmonics _I
Mean value 1580 r float[20][3] A Partial harmonic 1-20; L1, L2, L3

113 1588

.. ..

117 1636
Total harmonic distortion _U
Minimum value 1640 r float[3] % L1, L2, L3

Total harmonic distortion _I
Minimum value 1643 r float[3] % L1, L2, L3
Current, N 1646 r float A

118 1648

119 1660
Maximum of current mean value 1663 r float[3] A L1, L2, L3

Page 77= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Table 2

Energy in floating point format

Description Index Address(dez) r/w1)Type Unit Comment

DPV1 DPV0/MODB.

Real energy, Consumption 220 2000 r double[4] Wh Energy, Tariff1, Tariff2, Tariff3, Tariff4

Reactive energy, inductive 221 2010 r double[4] varh Energy, Tariff1, Tariff2, Tariff3, Tariff4

Reactive energy, capacitive 222 2020 r double[4] varh Energy, Tariff1, Tariff2, Tariff3, Tariff4

Real energy, supply 223 2030 r double[4] Wh Energy, Tariff1, Tariff2, Tariff3, Tariff4
Reactive energy
without rev. running stop 224 2040 r double[4] varh Energy, Tariff1, Tariff2, Tariff3, Tariff4
Real energy
without rev. running stop 225 2050 r double[4] Wh Energy, Tariff1, Tariff2, Tariff3, Tariff4

Page 78 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Table 3a

Time information for minimum and maximum values and system time

Description Index Address(dez) Type Comment

DPV1 DPV0/MODB.

System time 230 3000 char System time
Current L1, L2, L3 128 3001 char[2][3] Min. value, Max. value; L1, L2, L3
Voltage N-L 129 3007 char[2][3] Min. value, Max. value; L1, L2, L3
Voltage L-L 130 3013 char[2][3] Min. value, Max. value; L1, L2, L3
Real power 131 3019 char[2][3] Min. value, Max. value; L1, L2, L3
Apparent power 132 3025 char[2][3] Min. value, Max. value; L1, L2, L3
Reactive power 133 3031 char[2][3] Min. value, Max. value; L1, L2, L3
cos(phi) 134 3037 char[2][3] Min. value, Max. value; L1, L2, L3
Frequency 135 3043 char[2][3] Min. value, Max. value; L1, L2, L3
Real power, sum 136 3049 char[2] Min. value, Max. value;
Apparent power, sum 3051 char[2] Min. value, Max. value;
Reactive power, sum 3053 char[2] Min. value, Max. value;
cos(phi), sum 137 3055 char[2] Min. value, Max. value;
Total harmonic distortion _U
Maximum value 3057 char[3] L1, L2, L3
Total harmonic distortion _I
Maximum value 3060 char[3] L1, L2, L3

138 3061
Partial harmonics _U
Maximum value 3063 char[20][3] Partial harmonics 1-20; L1, L2, L3

139 3067

.. ..

148 3121
Partial harmonics _I
Maximum value 3123 char[20][3] Partial harmonics 1-20; L1, L2, L3

149 3127

.. ..

158 3181
free 159 3187
free 3188
free 3189
Real energy, starting time
consumption 3190 char Starting time of energy measurement
Reactive energy, starting time
inductive 3191 char Starting time of energy measurement
Reactive energy, starting time
capacitive 3192 char Starting time of energy measurement
Real energy, starting time
supply 160 3193 char Starting time of energy measurement
Reactive energy, starting time
without reverse running stop 3194 char Starting time of energy measurement
Real energy, starting time
without reverse running stop 3195 char Starting time of energy measurement
free 3196

.. ..

free 3198
free 161 3199

Format of time information: {char: year, month, day, hour, minute, second} Year: 00 .. 99 = 2000 .. 2099

Page 79= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Table 3b

Time information for minimum and maximum values and system time

Description Index Address

(dez)

Type Comment

DPV1 DPV0/MODB.

free 162 3205
Partial harmonics _U
Minimum value 3210 char[20][3] Partial harmonics 1-20; L1, L2, L3

163 3211

.. ..

172 3265

Partial harmonics _U
Minimum value 3270 char[20][3] Partial harmonic 1-20; L1, L2, L3

173 3271

.. ..

182 3325
free 183 3331
free 3332
Total harmonic distortion _I
Minimum value 3333 char[3] L1, L2, L3
Current, N 3336 char[2] Minimum value, Maximum value

184 3337
Real power EMAX 3338 char[2] Minimum value, maximum value
Current mean value (L1, L2, L3) 3340 char[2][3] Min. and maximum value; L1, L2, L3
Time changeover 3343 char[2] Summer time, winter time

Format of time information: {char: Year, month, day, hours, minute, second} Year: 00 .. 99 = 2000 .. 2099

Page 80 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Table 4

Averaging times of the mean values.

The averaging times cannot be retrieved via Profibus DP V1.

Description Index Address(dez) Type Comment

DPV1 DPV0/MODB.

Current 4000 char[3] L1, L2, L3
Voltage N-L 4003 char[3] L1, L2, L3
Voltage L-L 4006 char[3] L1-L2, L2-L3, L1-L3
Real power 4009 char[3] L1, L2, L3
Apparent power 4012 char[3] L1, L2, L3
Reactive power 4015 char[3] L1, L2, L3
cos(phi) 4018 char[3] L1, L2, L3
Frequency 4021 char[3] L1, L2, L3
Real power, sum 4024 char
Real power EMAX 4156 char 5=5, 6=10, 7=15, 8=30, 9=60Minutes
Apparent power, sum 4025 char
Reactive power, sum 4026 char
cos(phi), sum 4027 char
Current, N 4028 char
Total harmonic distortion _U 4150 char[3] L1, L2, L3
Total harmonic distortion _I 4153 char[3] L1, L2, L3
Partial harmonics _U 4030 char[20][3] Partial harmonics 1-20; L1, L2, L3
Partial harmonics _I 4090 char[20][3] Partial harmonics 1-20; L1, L2, L3

1)

r/w = read/write

Table 5

Internal control word

Description Address(dez) r/w1)Format Comment

Internal control word 5000 r/w char[17] Byte 0 Only internal use.

Byte 1 Only internal use.

Byte 2 Delete minimum value. (Byte > 0)
Byte 3 Delete maximum value. (Byte > 0)

Byte 4 Only internal use.
Byte 5 Only internal use.

Byte 6 Delete real energy. (Byte > 0)
Byte 7 Delete reactive energy. (Byte > 0)

Byte 8 Only internal use.
Byte 9 Only internal use.
Byte 10 Only internal use.
Byte 11 Only internal use.
Byte 12 Only internal use.
Byte 13 Only internal use.
Byte 14 Only internal use.
Byte 15 Only internal use.
Byte 16 Only internal use.

To change a byte of the "internal control word", the "internal control word" must be read, and the changed word must
be written back to address 5000.

Attention!

If the bytes with the comment "Only internal use" are changed, this may lead to a faulty operation of
UMG 503!



Format of time information: {char: Year, month, day, hour, minute, second} Year: 00 .. 99 = 2000 .. 2099

Page 81= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Table 6a

Measured values in integer format

Measured values Index Address(dez) r/w1) Format Unit Comment

DPV1 DPV0/MODB.

Current 4 8000 r word[3] A L1, L2, L3
Voltage 8003 r word[3] V N-L1, N-L2, N-L3
Voltage 8006 r word[3] V L1-L2, L2-L3, L1-L3
Real power

2)

8009 r word[3] W L1, L2, L3
Apparent power 5 8012 r word[3] VA L1, L2, L3
Reactive power

3)

8015 r word[3] var L1, L2, L3
cos(phi)

3)

8018 r word[3] L1, L2, L3
Frequency 8021 r word[3] Hz L1, L2, L3
Real power, sum

2)

6 8024 r word W
Apparent power, sum 8025 r word VA
Reactive power, sum

3)

8026 r word var

cos(phi), sum

3)

8027 r word
Current, N 8028 r word A Current in neutral conductor
Partial harmonics _U 8030 r word[20][3] V Partial harm. 1-20; L1, L2, L3

7 8036

.. ..

11 8084

Partial harmonics _I 8090 r word[20][3] A Partial harm. 1-20; L1, L2, L3

12 8096

.. ..

16 8144

Total harmonic distortion_U 8150 r word[3]

0

/00 L1, L2, L3

Total harmonic distortion _I 8153 r word[3]

0

/00 L1, L2, L3

Real power EMAX, sum

2)

17 8156 r word W

Table 6b

Mean values in integer format

Mean values Index Address(dez) r/w1)Format Unit Comment
Current 8157 r word[3] A L1, L2, L3
Voltage 8160 r word[3] V N-L1, N-L2, N-L3
Voltage 8163 r word[3] V L1-L2, L2-L3, L1-L3
Real power

2)

8166 r word[3] W L1, L2, L3

18 8168
Apparent power 8169 r word[3] VA L1, L2, L3
Reactive power

3)

8172 r word[3] var L1, L2, L3

cos(phi)

3)

8175 r word[3] L1, L2, L3

Frequency 8178 r word[3] Hz L1, L2, L3

19 8180
Real power, sum

2)

8181 r word W
Apparent power, sum 8182 r word VA
Reactive power, sum

3)

8183 r word var
cos(phi), sum

3)

8184 r word
Current, N 8185 r word A Current in neutral conductor
Partial harmonics _U 8187 r word[20][3] V Partial harm. -20; L1, L2, L3

20 8192

.. ..

24 8240

Partial harmonics _I 8247 r word[20][3] A Partial harm. 1-20; L1, L2, L3

25 8252

.. ..

29 8300

Total harmonic distortion _U 8307 r word[3]

0

/00 L1, L2, L3

Total harmonic distortion _I 8310 r word[3]

0

/00 L1, L2, L3

1)

r/w = read/write

2)

Sign - = Supply, + = Consumption

3)

Sign - = cap, + = ind

Page 82 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Table 6c

Maximum values in integer format

Maximum values Index Address(dez) r/w1) Format Unit Comment

Current 8314 r word[3] A L1, L2, L3
Voltage 8317 r word[3] V N-L1, N-L2, N-L3
Voltage 8320 r word[3] V L1-L2, L2-L3, L1-L3
Real power

2)

8323 r word[3] W L1, L2, L3
Apparent power 8326 r word[3] VA L1, L2, L3
Reactive power

3)

8329 r word[3] var L1, L2, L3
cos(phi)

3)

8332 r word[3] L1, L2, L3
Frequency 8335 r word[3] Hz L1, L2, L3
Real power, sum

2)

8338 r word W
Apparent power, sum 8339 r word VA
Reactive power, sum

3)

8340 r word var
cos(phi), sum

3)

8341 r word
Current, N 8342 r word A Current in neutral conductor
Partial harmonics _U 8344 r word[20][3] V Partial harm. 1-20; L1, L2, L3
Partial harmonics _I 8404 r word[20][3] A Partial harm. 1-20; L1, L2, L3
Total harmonic distortion _U 8464 r word[3]

0

/00 L1, L2, L3

Total harmonic distortion _I 8467 r word[3]

0

/00 L1, L2, L3

Real power EMAX, sum

2)

8470 r word W
Current mean value 8663 r word[3] A L1, L2, L3

Table 6d

Minimum values in integer format

Minimum values Index Address(dez) r/w1) Format Unit Comment

Current 8471 r word[3] A L1, L2, L3
Voltage 8474 r word[3] V N-L1, N-L2, N-L3
Voltage 8477 r word[3] V L1-L2, L2-L3, L1-L3
Real power

2)

8480 r word[3] W L1, L2, L3
Apparent power 8483 r word[3] VA L1, L2, L3
Reactive power

3)

8486 r word[3] var L1, L2, L3
cos(phi)

3)

8489 r word[3] L1, L2, L3
Frequency 8492 r word[3] Hz L1, L2, L3
Real power, sum

2)

8495 r word W
Apparent power, sum 8496 r word VA
Reactive power, sum

3)

8497 r word var
cos(phi), sum

3)

8498 r word
Current, N 8499 r word A Current in neutral conductor
Partial harmonics _U 8501 r word[20][3] V Partial harm. 1-20; L1, L2, L3
Partial harmonics _I 8561 r word[20][3] A Partial harm. 1-20; L1, L2, L3
Total harmonic distortion _U 8621 r word[3]

0

/00 L1, L2, L3

Total harmonic distortion _I 8624 r word[3]

0

/00 L1, L2, L3

Real power EMAX, sum

2)

8627 r word W

1)

r/w = read/write

2)

Sign - = Supply, + = Consumption

3)

Sign - = cap, + = ind

Page 83= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Table 7

Energy in integer format

Energy Index Address(dez) r/w1)Format Unit Comment

Real energy, consumption 9000 r long Wh Scale see address 9102

Real energy, supply 9001 r long Wh Scale see address 9102

Real energy without rev. running stop 9002 r long Wh Scale see address 9102

Reactive energy, capacitive 9003 r long varh Scale see address 9102

Reactive energy, inductive 9004 r long varh Scale see address 9102
React. energy without rev. running stop 9005 r long varh Scale see address 9102

1)
r/w = read/write

Page 84 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

In UMG503 almost all measured values are available in
floating point format (Table 2). For the transmission of
measured values, the floating format values are changed
into integer formats by UMG 503, such as char, int and
word (Table 4).
In order not to lose a digit after decimal point, the
transmitted value is scaled. The transmission value is
calculated as follows:

Measured value = Transmission value * Factor

The scales of the measured values are calculated from
UMG 503 out of current and voltage transformer ratio.
Here the minimum definition of the transmitted value of
0,1% is strived for.

The scales of the UMG 503 can be retrieved under the
following addresses:

Example: Scale

Transmitted value UMG 503 = 2301
Programmed scale = -1
Which voltage is measured by the UMG 503?

From the scale table, you can read the factor =/10 for
scale=-1:

Measured value = Transmitted value * Factor
Measured value = 2301 * 1/10
Measured value = 230,1V

The measured voltage is 230,1V.

Measured values Index Address

dez

r/w

1)

Format Possible scale

Current 200 9100 r word -3 .. 6
Voltage 201 9101 r word -3 .. 6
Power 202 9102 r word -3 .. 6
cos(phi) 203 9103 r word -3
Frequency 204 9104 r word -2
THD 205 9105 r word -3

10 scale factors are at your disposal:
Scale Factor

-3 /1000

-2 /100

-1 /10
0* 1
1* 10
2 * 100
3 * 1 000
4 * 10 000
5 * 100 000
6 * 1000 000

The scale of energy is fixed by the scale of power

1)

r/w = read/write

Table 8

Scale of measured values, which can be retrieved in integer format.

Page 85= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Table 9

In and outputs

A remote Bit is assigned to each in- or output, that can be controlled externally. If this remote Bit=0, the in- or output
is controlled by the UMG 503 only. If the remote Bit=1, the in- or output is controlled externally.

Description Address Format r/w

1)

Comment

Inputs 0048 word[3]

r/w Bit 0 Change over summer time (Winter=0, Summer=1)
r/w Bit 1 Remote, change over summer time
r/w Bit 2 Relay output 2
r/w Bit 3 Remote Bit, Relay output 2
r/w Bit 4 Relay output 1
r/w Bit 5 Remote Bit, Relay output 1

Bit 6..15 Free

r/w Bit 0 Remote Bit, Tariffs
r Bit 1 Synchronize of the internal clock

Bit 2..3 Free
r/w Bit 4 Reset of real power EMAX
r/w Bit 5 Remote Bit, Reset of real power EMAX

Bit 6..15 Free

r Bit 0..1 Tariff real energy consumption
r Bit 2..3 Tariff reactive energy Ind.
r Bit 4..5 Tariff reactive energy cap.

Bit 6..15 Free

Outputs 0032 word[3]

r Bit 0 Measuring range of voltage in L1 exceeded
r Bit 1 Measuring range of voltage in L2 exceeded
r Bit 2 Measuring range of voltage in L3 exceeded
r Bit 3 Measuring range of voltage in L1 underscored
r Bit 4 Measuring range of voltage in L2 underscored
r Bit 5 Measuring range of voltage in L3 underscored

Bit 6..15 Free

r Bit 0 Measuring range of current in L1 exceeded
r Bit 1 Measuring range of current in L2 exceeded
r Bit 2 Measuring range of current in L3 exceeded
r Bit 3 Measuring range of current in L1 underscored
r Bit 4 Measuring range of current in L2 underscored
r Bit 5 Measuring range of current in L3 underscored

Bit 6..15 Free

r Bit 0..2 Watchdogcounter
r Bit 3 Auxiliary input

Bit 4..15 Free

1)

r/w = read/write

Page 86 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Table 10

EMAX-Peak values

Description Address(dez) r/w1)Type Comment

Real power EMAX

Peak value 16000 r float [Tariff] [Month] Measured value in Watt

Date

Year 16500 r char [Month] The month of the year, in which...
Day 16600 r char [Tariff] [Monat] The day of the month, in which the

peak value appeared

Time

Hour 16700 r char [Tariff] [Month]
Minute 16800 r char [Tariff] [Month]

Year = 0 .. 99 00 .. 99 = 2000 .. 2099
Tariff = 0 .. 4 0 = T00, 1 = T01, ..
Month = 0 .. 11 0 = January, 1 = February, ..

For each month, a peak value is saved for each tariff. After one year, this peak value will be overwritten.

1)

r/w = read/write

Page 87= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Page 88 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

PSWbasic

The programming and reading out software PSWbasic
always belongs to the extent of delivery of the UMG 503.
The software can be installed on PCs with the operating
systems WIN98,WIN98ME, NT4.0 or WIN2000, and
offers the following possibilities:

- Configuration of the measured value indications,

- Read out the ring buffer,

- Create a GSD file,

- Configure the UMG503.

Functions

Configure measured value indications

Only a part of all possible measured values is indicated
in the producers presettings. This part of the program
makes possible:

- Read out the actual configuration of the measured
value indications of the UMG 503.

- Load the configuration of the measured value indications
from PC.

- Destine the kind and sequence of the measured values.

- Transmit the configuration of the measured value
indications to the UMG 503.

- Save the configuration of the measured value indications
on PC.

Memory

The memory of the UMG 503 is divided into three areas:

the event memory,
the minimum and maximum memory and

the ring buffer.
Only the contents of the minimum and maximum memo­ry can be read out directly at the UMG 503. The event
memory and the ring buffer must be read out by PC.

Required hard and software

Software

A PC with Windows® 98/2000/NT4 is required for
running the Software PSWbasic. Please note, that the
used Windows version should be the latest issue. When
this manual was printed, the following issues were actual:

- Windows® 98

- Windows® 98ME

- Windows® NT4.0 mit Service-Pack3

- Windows® 2000
The service packs contain corrections of Windows faults.
They can be obtained from Microsoft or downloaded
from Microsoft™-Side in the internet.

Hardware

- PC Pentium 100MHz or higher

- 16 MByte RAM(for Windos® NT 32MByte)

- About 5MB free memory on harddisk for the program

PSWbasic

- Color monitor with a solution of 640x480 or 800x600
dots and 265 colours.

- 1MB PCI graphic board.

- The PSWbasic must be installed on harddisk.

- CD-ROM drive.

- Parallel printer interface.

- Modem and/or serial interface (Com1/2..).

Page 89= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Create GSD file

Devices with PROFIBUS protocol need a GSD file. The
GSD file is a f ile which is specific for the device, in
which the transmission parameters, the kind of measure­ment data are agreed between the PROFIBUS master
and the PROFIBUS Slave.
With this module, measured values and inputs and out­puts can be selected for transmission to the PLC.
As a result of the configuration, a GSD f ile is created for
the PLC and programming data are generated for the
UMG 503. The programming data for the UMG 503 are
deposited as a text at the beginning of the GSD file. The
programming data must be entered in the UMG 503
under "input buffer", "output buffer" und "User-Parame­ter-buffer".

Configuration of UMG 503

A simple configuration of the UMG 503 can be carried
out directly at the device via the three keys and display. A
configuration of the UMG 503 from PC is possible with
the option "Configuration of UMG 503". Configurations
can be saved and printed out at PC.
Additionally, an expanded configuration of the ring buf­fer is possible. The selection of six memory areas makes
possible a better usage of the ring buffer. Each memory
area can be assigned to one mean value. The recording is
done either within or out of the destined area, which is
limited by two selectable limits.
Only those mean values are saved in the ring buffer,
which are within the memory area.

Page 90 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

WAGO I/O SYSTEM

A simple expansion of the inputs and outputs of the
UMG 503 is possible with the WAGO I/O SYSTEM. The
UMG 503 is connected to the bus coupling via an interface
cable. The Modbus RTU protocol is used for
transmission of data. Function clamps such as analogue
outputs, and digital inputs and outputs can be connected
to the bus coupling.

Function clamps

Function clamps, which can be used with the WAGO
Modbus coupling:
Digital inputs

750-400 2-chanel digital input 24V; 3,0ms

750-405 2-chanel digital input 230V AC

750-415 4-chanel digital input 24V AC/DC
Digital outputs

750-501 2 outputs, 24V, 0,5A

750-502 2 outputs, 24V, 2A

750-504 4 outputs,

750-516 4 outputs, 24V

750-519 4 outputs, 5V

750-509 2 outputs, 230V, Solid State

750-512 2 NO, Relay, potential bound.

750-513 2 NO, Relay, potential free

750-514 2 Change over switch, Relay, po­tential free

750-517 2 Change over switch, Relay,

potential free

Analogue outputs

750-550 2-chanel analogue output 0-10V

750-552 2-chanel analogue output 0-20mA

750-554 2-chanel analogue output 4-20mA

750-556 2-chanel analogue output +-10V

As the Siemens data format is not supported by the UMG
503, the function clamps

750-580 0-10V and

750-584 4-20mA
cannot be used.

Attention!

Please not the corresponding installation instructions for
the WAGO I/O SYSTEM.

Installation instructions

The connection of the UMG 503 to the bus coupling can
be carried out via RS232 or RS485 interface. The WAGO
Bus coupling has always the address 1.
For operation with the WAGO bus coupling, protocol
number "06" must be set at the UMG 503 (Modbus RTU
Master). Please note, that protocol "06" cannot be
operated on both interfaces of the UMG 503 at the same
time.
All existing analogue function modules must be pro­grammed at the UMG 503. Only the last clamp of the
analogue module does not have to be programmed.
The analogue clamps must be plugged to the bus coupling
at first, and the digital clamps afterwards.

UMG503
(Master)

Bus coupling
(Slave)

Function
terminals

Interface cable

WAGO I/O SYSTEM

Page 91= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Description Transmission Possible

mode Baud rates

750-312 RS485 9600, 19200
750-315 RS485 9600, 19200, 38400, 115200
750-314 RS232 9600, 19200
750-316 RS232 9600, 19200, 38400

If the UMG 503 is connected to the bus coupling via
RS232 interface, a "1 to 1 cable" must be used.
Connections via RS485 interface are carried out
according to the diagram below.

Bus coupling

The UMG503 can communicate with maximal

6 analogue outputs,
6 digital outputs and

3 digital inputs
via WAGO Bus coupling at maximum. The following
bus couplings can operate with UMG503 with the same
transmission mode and Modbus RTU protocol.

WAGO-Bus coupling

RS485 interface (2-wire)

UMG503
RS485 Interface (2-wire)

Diagr: Connection between UMG 503 and WAGO-Bus coupling via RS485 (2-wire)

1
2
3 TXD/RXD
4
5 GND

6
7

8 TXD/RXD inverted
9

Schnittstellen­kabel

UMG 503

Page 92 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Indicating range and accuracy

Quantity Indicating range Measuring range for Measuring

Scale factor=1 accuracy

Voltage

L-N 0,0V .. 999,9 MV 50 .. 500 V ±0,2% rng

L-L 0,0V .. 999,9 MV 80 .. 870 V ±0,2% rng
Current 0,000 .. 9999 A 0,005 .. 5 A ±0,2% rng
Current in N 0,000 .. 9999 A 0,060 .. 15 A ±0,6% rng
Frequency (of voltage) 45,00 .. 65,00 Hz 45,00 .. 65,00 Hz ±0,1% rng
Power

Real power, consump. 0,00W .. 9999 MW 0,05 W .. 2,5 kW ±0,5% rng

Real power, supply -0,00W .. -999 MW 0,05 W .. 2,5 kW ±0,5% rng

Apparent power 0,00VA .. 9999 MVA 0,05 VA .. 2,5 kVA ±0,5% rng

Reactive power 0,00VAr.. 9999 MVAr 0,05 kvar .. 2,5 kvar ±0,5% rng
Energy (max. 10 digits)

Real energy,

without rev. running stop 0,0 Wh .. 9999 GWh 0,05 Ws .. 9999 MWh

1)

Real energy, consump. 0,0 Wh .. 9999 GWh 0,05 Ws .. 9999 MWh

1)

Real energy, supply 0,0 Wh .. 9999 GWh 0,05 Ws .. 9999 MWh

1)

Reactive energy 0,0 vars .. 9999 Gvarh 0,05 vars .. 9999 Mvarh

1)

Total harmonic content THD(f)

Current 0,0 .. 100 % 0,0 .. 100 % ±0,5% rng

Voltage 0,0 .. 100 % 0,0 .. 100 % ±0,5% rng
Partial harmonic content

Current (1. - 20.) 0,000 .. 9999 A 0,005 A .. 5A (1A) ±0,5% rng

Voltage (1. - 20.) 0,0V .. 99,99 kV 0,000 V .. 9999 V ±0,5% rng
cos(Phi) 0,00ind .. 1,00 .. 0,00cap. 0,00ind .. 1,00 .. 0,00cap.

2)

The specifications presuppose the following conditions:

Yearly calibration

Warm up 10 minutes

Ambient temperature of 18 .. 28°C.
In the range of -10..18°C and 28..55°C an additional error of ±0,2% Mv per K must be considered.

Used abbreviations:
rng = of measuring range
rdg = of measured value
ind = inductive
kap = capacitive

1)

The measuring accuracy corresponds to the measuring accuracy of power.

2)

If the measured apparent power in the range of 1% .. 100% of measuring range, cos(phi) is displayed with an

accuracy of ±1% of 1.000.

Attention!

The inaccuracy of the compressed memory data

is max. ±0,4% rng.



Page 93= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Technical Data

Ambient conditions

Overvoltage class : CATIII
Pollution degree : 2
Operating temperature : -10°C .. +50°C
Storage temperature : -20°C .. +60°C
humidity class : 15% to 95%

(without dew)

Operating altitude : 0 .. 2000m over NN

Auxiliary voltage Uh : see type plate

Range 1 (Standard) : 85 .. 265V AC

80 .. 370V DC

Range 2 (Option) : 40 .. 115V AC

55 .. 165V DC

Range 3 (Option) : 15 .. 55V AC

20 .. 80V DC
Fuse : 4A up to 10 A
Power consumption : max. 9VA

Measuring inputs

Rated pulse voltage : 6kV
Signal frequency : 45Hz .. 1200Hz

Current measurement

Power consumption : ca. 0,2 VA
Rated current for ../5A(1A) : 5A(1A)

Min. working current : 5mA
Limiting current : 5,3A (sinus shape)
Overload : 180A for 2 sec.

Voltage measurement

max. 500VAC against ground
Power consumption : ca. 0,1 VA
Maximum prefuse : M2A
Measuring range L-N : 50 .. 500V AC

2,3 .. 23V AC (option)

Measuring range L-L : 90 .. 870V AC

4 .. 40V AC (option)

Frequency of fundamental : 45Hz .. 65Hz

Protection class

Front :IP50 acc. IEC60529
Front with seal (Option) :IP65 acc. IEC60529
Back side :IP20 acc. IEC60529
Plug screw connection :IP20 acc. IEC60529

Measurement

Mode : True (RMS)
Measuring rate : 2 measurements/sec.
Actualization

Display : 1 time per second
Analogue output : < 500ms
Relay outputs : < 500ms

Auxiliary input (Option)

Current consumption : ca. 2,5mA .. 10mA

Analogue output (Option)

Definition : 12Bit
Load : max. 500Ohm
External auxiliary voltage :20V.. 27VDC/50mA
Reaction time : 1,5 seconds

Pulse output (Option)

S0 interface according to DIN 43864
Switching frequency : max. 10Hz
Switching current : max. 30mA
External auxiliary voltage : 20V .. 30VDC

Relay outputs (Option)

Switching voltage : max. 250VAC
Switching power : max. 1000W
Reaction time : 500ms

Weight : 1kg
Location : any
Operating height : 0 .. 2000m over NN
Accuracy of the internal clock : +- 1 minute/month

Interference resistance (industrial areas)

: EN55082-2:1995
: IEC61000-4-3,10V/m
: IEC61000-4-4, 2kV
: IEC61000-4-2, 8kV

Spurious radiation (residential areas)

: EN55011 10.1997

Safety guidelines : EN61010-1:2001

: IEC61010-1:2001

Protection class : I (device with protective wire)

Testing voltages
Voltage measuring inputs against Housing, RS232 and RS485 : 3250V AC
Relay outputs, auxiliary input and current measuring inputs against Housing, RS232 and RS485 : 2200V AC

Page 94 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

The grey marked connections are available as options.
All dimensions are given in mm.

Design for panel mounting

Back side

Side view

Design for DIN Rail Mounting (Option)

Back side

Diagr. Feeding wires for a DIN Rail mounted UMG 503

Side view

Page 95= Key 1 = Key 2 = Key 3 = Maximum or consumption = Minimum or supply

Connection example

The grey marked terminals are not available for all types of UMG 503.

RS485

RS232

Relaisausgänge

Relay Outputs

K1 K2

Hilfsein-

gang

Auxiliary

Input

Hilfsspan-

nung

Auxiliary

Voltage

Messung

Measurement

L-L 90 .. 870VAC

L-N 50..500VAC

0,005A .. 5A

4 - DTR

3 - TXD

7 - RTS

2 - RXD

8 - CTS

5 - GND

27 26 25 24 23 22 21 20 19 18 14 15 16 17 10 11 12 13

max. 5m

Aus

Off

1 2 3 4

L1

PE

N

L3

L2

230/400V

50Hz

../5(1)A

../5(1)A

../5(1)A

k l

k l

k l

4-

10A

2A

L1 L2 L3 N

L1 N

PE

Verbraucher

Consumer

Ohne Abschlusswiderstand

Without Line Terminator

Mit Abschlusswiderstand

With Line Terminator

max.

1000m

RS485

RS232

Com

PC

Aus

Off

Ein

On

Ein

On

A B

Impuls-

ausgang

Pulse

Output

Ausgang

Output

0/4 .. 20mA

5 6 7

8 9

10160205

1,5k

24V

20..30VDC

+5V GND

UMG503

Page 96 = Key 1 = Key 2 = Key 3= Maximum or consumption = Minimum or supply.

Brief instructions

Select programming menu.
Select current transformer.
Select number.
Change number.
Move decimal point.
Save and measured value
indication.

Primary current
Secondary current

Primary voltage
Secondary voltage

Select programming menu
Confirm selection.
Select voltage transformer.
Select number.
Change number.
Move decimal point.
Save and measured value
indication.

2 x
1 x

2 Sek.

2 x
1 x
1 x

2 Sek.

Current transformer

Votage transformer

V

V

VT

CONF

A

A

CT

CONF