Gossen Metrawatt ENERGYMID Operating Instructions

Operating Instructions

!

M16

1948

EBY

8

16

Prototype test certificate

Accuracy class / operating temperature

Pulse output

Type designation (article number)

Energy export / energy import

Nominal voltage
Imin - In (Imax.) / nominal frequency

Warning

Protective insulation

Symbol for system type

Year o f m a n u f a c t u r e

Metrology mark

LED constant

2D code
or
calibration
mark
(feature P9)

EBY

8

16

Serial number

Up key

Enter key

Current/voltage transformer ratio

Anti-reversing for

the registers in both
energy directions

Bidirectional meter

L2

L1

L3

Voltage Voltage

Current Current Current

Voltage

CurrentCurrent Current

N

Voltage

Voltage Voltage

Current Current Current

L3

L2L1 N

Current

CurrentCurrent

Ta ri f f

Connections

W1: LON
W2: M-Bus
W4: TCP/IP
W7: Modbus RTU
V1 ... 9: SØ pulse output

Tb Tn Ta

TCP/IP

R

L

+

24

23/25

U

t

External Voltage Source

Energy type*

Max. 40 V

R

L

24

23/25

U

t

AC/DC

Energy type*

Max. 375 V

~

24 V DC

I = max. 100 mA

I = max. 27 mA

U U

External Voltage Source

Standard pulse duration: 30 ms + 5%, interpulse period: > 30 ms
V7/V8 pulse duration: 130 ms + 5%, interpulse period: > 130 ms

V3 / V4

Main display

(active energy* in kWh or MWh)

Auxiliary display 1 (active power* in kW or MW)

* EM238x transformer meter: CT and VT are taken into account

Auxiliary display 2 (e.g. IN, OUT for import or export)
In case of error: error code alternates with current display

(M2/M3: reactive energy* in kVArh or MVArh)

(M2/M3: reactive energy or power in kVAr(h) or MVAr(h)*)

Power: negative sign for export

Enable Key





ENERGYMID

Electronic Energy Meters
Direct conn. EM2281/EM2289
Transformer conn. EM2381/2387/2389

3-349-868-03

3/6.17

Technical data, dimensional drawings, connector pin
assignments and order information can be found on
the Internet at www.gossenmetrawatt.com under:

> Englisch > Products > Industrial Measurement > Energy
Meters > EM2281 ... EM2389

1Scope of Delivery

1Energy meter
2 Operating instructions (German and English)
1 Calibration certificate (with feature P9 only)

Operating instructions including safety precautions
can be found in each respective language at

www.gossenmetrawatt.com/english/produkte/
em2281-em2389.htm
> Operating Instructions >> GB >> F >> I

2 Safety Precautions – Symbols

– Check the specified nominal voltage on the serial

plate before placing the instrument into service.
– Observe maximum pulse output voltage.
– When wiring the instrument, make sure the connec-

tor cables are not damaged, and that they are volt-

age-free.
– If it can be assumed that safe operation is no longer

possible, the instrument must be immediately

removed from service (disconnect input voltage!).

Safe operation can no longer be relied upon if the

instrument demonstrates visible damage.

The device may not be placed back into operation

until troubleshooting and repair have been per-

formed, and calibration and dielectric strength have

been tested and approved at our factory or an autho-

rized service center.
– Voltage conducting parts may be exposed if the

cover is opened.

If balancing, maintenance or repair of a live open

instrument is required, this may only be carried out by

trained personnel who are familiar with the dangers

involved.
– When connecting measuring current, it is important

to provide for low-ohmic contact and to select an

appropriate conductor diameter.

Meanings of Symbols on the Instrument

DE MTP 17 B 002 MI-003 (EM228x)
DE MTP 16 B 004 MI-003 (EM238x)

Prototype test certificate

Total insulation,
protection class II device

Warning concerning a point of danger
(attention, observe documentation!)

This device may not be disposed of with the
trash. Further information can be accessed on
the Internet at www.gossenmetrawatt.com by
entering the search term “WEEE”.

Metrology mark
with indication of year (M16) and register
no. of the notified body for module D,
country-specific calibration validity period

Marking with stamp of the federally approved
test laboratory

(for recalibration only)

Tamper-Proof Sealing – Opening the Meter / Repairs
Tamper-Proof Calibration Sealing

with Manufacturer’s Seal

(at the side)
If the manufacturer’s seal is damaged or removed, all

guarantee claims are rendered null and void.
The meter may only be opened by authorized, trained per-

sonnel in order to ensure flawless operation and to assure
that the guarantee is not rendered null and void.
If it can be ascertained that the

meter

has been opened
by unauthorized personnel, no guarantee claims can be
honored by the manufacturer with regard to personal
safety, measuring accuracy, compliance with applicable
safety measures or any consequential damages.

Tamper-proof sealing for the terminal cover may be
attached either to the left or the right of the terminal
cover.

3 Rating Plate Entries

4 Connector Pin Assignments and Wire Gauge

Note: Observe the wiring diagrams in the top and bot-

tom terminal covers.

Connections Direct, EM228X Transformer, EM238X

Current input Solid wire 16 sq. mm

Voltage input

SØ pulse output
Bus output, tariff input
(power utility pulse)

TCP/ IP

Fine wire 25 mm
16 mm2 with wire end ferrule
Tightening torque:
3-4 Nm

N: solid wire 2.5 sq. mm
Tightening torque:
0,4 Nm

Solid wire 2.5 sq. mm
Tightening torque:
0,4 Nm

Solid wire 4 sq. mm

2

Tightening torque:

or



0,5-0,6 Nm

Solid wire 4 sq. mm
Tightening torque:
0,5-0,6 Nm

Solid wire 2.5 sq. mm
Tightening torque:
0,4 Nm

RJ45 (8P8C)

Meas. Inputs, EM228X Direct Meter (top & bottom terminals)

Meas. Inputs, EM238X Transf. Meter (bottom terminals)

Connections (top terminals)

5 Pulse Output – Bus Interfaces

Default setting: active energy
Terminal 23 (S01) import, terminal 25 (S02) export

* Type of energy can also be selected with feature V2, V4.

Pulse Rates V1/V3,

Direct

Transformer

CT x VT = 1 (Q0) 1000
CTxVT=1(Q0)U6/7
CTxVT=1(Q0) U3 1000
CT, VT, progr. (Q1) 1000
CT, VT, progr. (Q1)U6/7
CT, VT, progr. (Q1)U3
CTxVT; CT, VT, fixed

(Q9)

2  10 1000 100 — — 1  1000 pls/kWh

11  100 100 10 — — 0.1  100 pls/kWh

101  1000 10 1 — — 0.01  10 pls/kWh

1001  10,000 1 100 — — 1  1000
10,001  100,000
100,0011,000,000

Underlined values are default values.

V7

fixed

1000 100 — — 1  1000 pls/kWh

1000

1000
1000

f (primary)

0.1 10 — — 0.1  100 pls/MWh

0.01 1 — — 0.01  10 pls/MWh

V8 V9,

[pulses per kWh]

100

1000

100

1000

100

1000

100

1000

100

1000

100

1000

V2/V4, programmable

fixed

U228x

U2381 / U238x
f (secondary)

100 ...

50000 1



20000 1



50000 1



50000 1



20000 1



50000 1



1000
1000
1000
1000
1000
1000

f (primary)








10,000 pls/kWh
10,000 pls/kWh
10,000 pls/kWh
50,000 pls/kWh
50,000 pls/kWh
50,000 pls/kWh

pls/MWh

Repair and Replacement Parts Service
Recalibration

Recalibration can be conducted at any time by our fed­erally approved test laboratory (EBY-8).

GMC-I Service GmbH
Service Center
Thomas-Mann-Str. 20
D-90471 Nuremberg, Germany
Phone [phone]
Fax [phone]
e-mail [e-mail]
www.gmci-service.com

This address is only valid in Germany. Please contact our
representatives or subsidiaries for service in other coun­tries.

Industrial Product Support

If required please contact:

GMC-I Messtechnik GmbH

Industrial Product Support Hotline

Phone [phone]
Fax [phone]
e-mail [e-mail]

Edited in Germany • Subject to change without notice • PDF version available on the Internet

GMC-I Messtechnik GmbH
Südwestpark 15
90449 Nürnberg, Germany
Phone [phone]
Fax [phone]
e-mail [e-mail]
www.gossenmetrawatt.com

6 Display and Control Panel

6.3 Meanings of Symbols at the LCD

6.1 Test LEDs

The

test LEDs

are located above the control keys. The left­hand LED indicates energy export, and the right-hand LED
energy import. LED blinking frequency increases along
with measured power. If all currents are smaller than start­ing current, both LEDs light up continuously.

LED Constant

EM228x: 10,000 pls/kWh (direct meter)
EM238x: 100,000 pls/kWh (transformer meter)

6.2 Resolution, Main Display (large characters) Energy Import

Intern wird mit erhöhter Auflösung gezählt. Hierdurch kann bei
Mehrtarifnutzung das Gesamtregister in der letzten Stelle
einige Digit über der Summe der Einzelregister liegen.

Meter /
Feature

U2281,
U2289

* An additional place to the right of the decimal point is included

** In the case of Q1, the secondary display can be calibrated Q0,

CTxVT

CTxVT

min.

max.

— — 123456.78 23456.789 kWh

Q0

Q9

U238x

Q1 **

for the calibration display in the case of a main display which
can be calibrated (Q0 or Q9). And thus the leading digit is
eliminated in the case of an 8-place display.

for which reason display overflow is based on the secondary display.
The normal display is shifted one place to the left if necessary.

1 1 12345.678 2345.6789 kWh

2 4 12345.678 2345.6789 kWh

5 40 123456.78 3456.7890 kWh

41 400 1234567.8 34567.890 kWh

401 4000 12345678 345678.90 kWh

4001 40000 123456.78 3456.7890 MWh

40001 400000 1234567.8 34567.890 MWh

400001 1000000 12345678 345678.90 MWh

1 4 u12345.67 ** kWh

5 40 u123456.7 ** kWh

41 400 u1234567 ** kWh

401 4000 u12345.67 ** MWh

4001 40000 u123456.7 ** MWh

40001 100000 u1234567 ** MWh

Normal dis­play

Calibration
display *

Unit

u Main display

programmable CT/VT, see section 6.2).
T1 ... T8: active tariff

Display of instantaneous power in 4 quad­rants: positive or negative active power P,
positive or negative reactive power Q.

Correct connection:
Continuous illumination of the phase symbols
where P



Phase failure:

Symbol for affected phase is cleared from the display.

Incorrect phase sequence:

Phase symbols blink in following order: 3 - 2 - 1.

Negative power:

Respective phase symbol blinks.

For bus connection: appears when
the meter transmits a data packet.

Key symbols for parameters configuration
(see next column)

, not calibrated (feature Q1,

0

Key Symbols for Parameters Configuration

for Feature Q1 and V2, V4:

Key and 2nd key bit blanked:
Parameter CT, VT and SØ configurable according
to features, disabling with enable key.

Key displayed with one bit:
Parameter CT, VT and SØ disabled,
change after activating the enable key.

Remaining feature combinations:

Key blanked, 2nd key bit displayed:
parameters CT, VT or SØ (which are or can be cali­brated) are preset at the factory, can be queried in the
display mode, other parameters can be set by the
user.
Key displayed with 2nd bit: parameters which are or
can be calibrated are preset at the factory; other
parameters are disabled with the enable key and
must be reset after clearing disabling.

Values which are preset at the factory are printed addi­tionally on the rating plate.

6.4 LCD Background Illumination

Background illumination is activated each time a key is
activated. Background illumination goes off after about
2 minutes.

Background illumination colors indicate various display
menus:
– White: query menus

– Red: display of firmware version
– Pink: parameters display and setting menu
– Blinking red: in case of error

6.5 Key Operation

Querying Parameter Values

In addition to the LCD test, the UP and ENTER keys also
make it possible to query currently set parameter val­ues, as well as to change parameters for certain fea­tures after first pressing the enable key.

If no keys are pressed for a period of 1 minute, the
meter is returned automatically to its standard display.

Parameters can be changed for the following meters:

Parameters CT and VT for U238x with feature Q1,
Parameter SØ for U228x/U238x with feature V2/V4

Further parameters in accordance with interface descri­tion.

a) Enabling Parameter Changes

The enable key makes it possible to enable or disable
parameter changes. It’s located underneath the top ter­minal cover between terminals 21 and 22 and is acti­vated with a pointed object (e.g. a ballpoint pen).

Pressing the enable key activates the “change parame­ters” operating mode (key off):

Pressing the enable key again disables the “change
parameters” operating mode (key on):

If no keys are pressed for a period of about 2 minutes,
the “change parameters” operating mode is exited auto­matically and disabled (key on).

b) Changing Parameter Values

➭ Briefly press the enabling key as described in point

a) above (this activates the “change parameters”
operating mode).

➭ See the operating overview on the back with regard

to changing the parameters.

➭ Press and hold the ENTER key until the firmware ver-

sion appears (red background).

➭ Press the UP key. The display test appears.

Briefly press and hold the ENTER key in order to dis-
play two further test patterns.

➭ Then repeatedly press the UP key until the parame-

ter to be changed appears at the display.

➭ Briefly press the ENTER key in order to access the

setting menu.

➭ The input cursor blinks at the leftmost entry posi-

tion. Each tine the ENTER key is pressed the cursor
is advanced to the next position to the right. The
value of the blinking digit can be increased by
pressing the UP key. When the rightmost digit is ac­knowledged by pressing the ENTER key, the se­lected value is accepted and SAVinG appears
briefly at auxiliary display 2. If no keys are pressed
for a period of about one minute, the setting menu
is exited.

➭ Press and hold the ENTER key or wait for one minute

in order to change to the normal display.

➭ Press the enable key once again. This disables the

“change parameters” operating mode.
Disabling takes place automatically after 2 minutes.

7 Switching Amongst Tariffs

!!!!!!!!!

!!!

12345. 678

4567

kWh

W

1 n a

Calibration

Firmware

Normal display

Pulse rate

Pulse Duration

U238x with feature Q1

U238x with feature Q1

Feature V2/V4

Feature V2/V4

12345. 678

678

kVArh

VAr

1

n R

CT

VT

112345

.

6

7

8

4567

kWh

W

0 u t a-

12345

.

6

7

8

678

kVArh

VAr

0 u t R-

12345

.

6

7

8

1

2345.

678

kWh

kVArh

1 n

Reactive energy import, total (M2/M3)

1 123

4

2 1

234

W

3 1

234

Active power / phase

1 230.0

2

230

.

4

V

3 230

.

4

Phase voltages

23456.7

8

d 15 13 : 30

kWh

16.10.16

Query load profile

12345

.

6

7

8

1

2345.

678

kWh

kVArh

0 u t

12345

.

6

7

8

1

2345

.

678

kWh

kVArh

t1 : 1 n

12345

.

6

7

8

1

2345

.

678

kWh

kVArh

t1 : 0 u t

Export, total

Active energy import, total

Tariff (T1)

Tariff (T1)

Power displays M1/M3 only

1 1234

2

1234

VAr

3 1234

1 1 234

2

1234

VA

3 1234

1234

1234

VA

VAr

1234

Reactive power / phase

Apparent power / phase

Total power

Mains monitor M1/M3 only

12 400.4

23

400

.

4

V

31 : 400

.

4

Line-to-line voltage

Switching Between Active and Reactive Energy – Display Tests – Calibration Display – Setting Transformer and S0 Interface Parameters Switching Amongst Tariffs, Active and Reactive Energy, as well as Power Displays and Mains Monitor, Optional Display of the Load Profile

1

Total active power (kW) appears at auxiliary display 2

2

Not approved for billing purposes in Switzerland

Measuring Function (Display) Feature

Measured Quantity Accuracy M0 M1 M2

2

M3

2

Active energy (kWh) 1EP1...EP8, EPtot 1%

••••

Reactive energy (kVArh)

EQ1...EQ8, EQtot

2%

—— • •

Star voltage (V) U1N, U2N, U3N0.5% 1 d

—•—•

Delta voltage (V) U12, U23, U13 0.5%  1 d

—•—•

Current per phase (A) I1, I2, I3 0.5% 1 d

—•—•

N conductor current (A) I

N

1%  1 d, typ.

—•—•

Active power (kW) P1, P2, P3, Ptot 1%  1 d

—•—•

Reactive energy (kVAr) Q1, Q2, Q3, Qtot 1% 1 d

—•—•

Apparent power (kVA) S1, S2, S3, Stot 1% 1 d

—•—•

Power factor
(cos phi)

PF1, PF2, PF3,
PFtot

1% 1 d

—•—•

Frequency (Hz) f 0.05%  1 d

—•—•

RMS distortion value THD U1, U2, U3

—•—•

THD I1, I2, I3

—•—•

Blinking cursor

Identifies the current entry position. Position
selection via ENTER.
The value at the cursor position can be
changed with the UP key (upward arrow).

Abbreviations

ct Transformation ratio, current
I

N

N conductor current (calculated)
SØ SØ pulse output
THD Distortion component (for voltage and current)
vt Transformation ratio, voltage

Features

M1 Multifunctional variant:

measurement of U, I, P, Q, S, PF, f, THD, In
M2 Measurement of reactive energy
M3 Multifunctional variant:

measurement of U, I, P, Q, S, PF, f, THD, In, reactive energy
Q1 Programmable transformation ratios
Q2 Fixed transformation ratios
V2/V4 Programmable SØ
V9 Customer-specific SØ rate
W1 ... 7 Bus connections
Z1 Load profile (only possible with bus)

Keys

ENTER key (press briefly)

ENTER key (press and hold)

UP key (press briefly)

long

Pulse source

4 pulse sources for pulse outputs SØ1 and SØ2:

– Active energy import (+) kWh or export – kWh
– Reactive energy import (+) kVAr or export – kVAr

2 states: SØ switch “

C l o s e d” or “0 p e n”

Operating Overview

W

Feature V2/V4

Transformation ratios (EM238x only)

T4, feature W1 ... W7: T5 ... T8

Active energy import

Active energy export

Fixed display and illumination – live values

12345

.

6

7

8

1

2345.678

kWh

kVArh

1 n

Active energy import, total

12345

.

6

7

8

1

2345.678

kWh

kVArh

0 u t

Active energy export, total

Date (DD.MM.YY)

Increment (dt) / time (hh:mm)

Query load profile:

Each time the UP key is pressed, the next older
load profile is displayed along with its date and
time.

2 additional

Display test

Pulse rate

Number of pulses to be
read out per kWh

Pulse duration

Duration of the pulse for the on state or the high
value: at least 30 ms, e.g. 70 ms in case of
processing problems

version

1 .0 0

2345. 6789

1234.5678

kWh

kWh

1234

W

2345. 6789

1234.5678

kWh

kWh

hold

10000

c t

10000

c t

set

1000

u t

1000

u t

set

50 1000

per kWh

50 1000

per kWh

set

50 0.100

sec

50 0.100

sec

set

50 srC1/2

+ / – kWh

50 srC1/2

+ / – kWh

set

SØ pulse output (with W0 only)**

test patterns

8888:88:88

8888:88:88

kWh

kWh

88:88:88

Information for manufacturing

All Tariffs *

Active tariff (here T1)

Reactive energy import, total (M2/M3 only) Reactive energy export, total (M2/M3)

Reactive energy, capacitive (M2/M3 only)
Reactive power, capacitive (M2/M3 only)

Active energy export
Active power export

Reactive energy, inductive (M2/M3 only)
Reactive power, inductive (M2/M3 only)

Active energy import
Active power import

* Max. 4 tariffs with S0 (V1 ... V9),

or 8 tariffs with bus (W1 ... W7)

T1 T1 T1 T1 T1T3 T1T3

T2T4 T2T4

long

** See corresponding interface description for additional menus in case of bus connections (feature W1 ... W7) – set load profile (Z1) can be found underneath query load profile.

Q0: CT = VT = 1
Q1: Programmable CT, VT
Q9: Fixed CT, VT (default)

CT x VT  1 million

T1T3

T1T3

T1

T1

pf1 : 1

.

00

2

: 1. 00

3 : 1

.

00

Power factor / phase

pf : 1

.

00

50.00 H

z

Power factor

T1

T1

T1

T1

T1

T1

1 1

.

234

2

1. 234

A

3 1

.

234

1n1.234 A

50.00 hz

kW

dv1 : 0.120

2

: 0. 042

3 : 0

.

050

THD U1, U2, U3

d11 : 0

.

476

2

: 0. 120

3 : 0

.

092

THD I1, I2, I3

T1

T1

T1

T1

T1

T1

Phase currents

Line frequency

4-wire only4-wire only

4-wire only4-wire only4-wire only4-wire only

Active Tariff (here T1)

3/4-wire

2-wire

1234

1234

VA

VAr

1234

Apparent/reactive/active power

W

pf : 1

.

00

50.00 H

z

Power factor

T1

T1

123.4

1

.

234

V

A

50.00 H

z

Voltage/current/frequency

dv : 0

.

028

d1

: 0. 082

THD U, I

T1

T1

12345

.

6

7

8

1

2345

.

678

kWh

kVArh

t 2 : 1 n

12345

.

6

7

8

1

2345

.

678

kWh

kVArh

t 2 : 0 u t

Tariff (T2)

Tariff (T2)

T1

T1

12345

.

6

7

8

1

2345

.

678

kWh

kVArh

t 3 : 1 n

12345

.

6

7

8

1

2345

.

678

kWh

kVArh

t 3 : 0 u t

Tariff (T3)

Tariff (T3)

T1

T1

12345

.

6

7

8

1

234567

kWh

W

1 n a

1 5

dt dt

set

Load profile feature Z1 only, (only with bus feature: W1 ... W7)

2/3/4-wire

long

long

version

1

.

0 0

Set load profile

Normal display

Set demand integration period:

Increment dt can be set
with the UP key to 1, 2, 3, 4,
5, 10, 15, 30 or 60 minutes.
Integration takes place syn­chronous to clock time.

Setting menu, increment

T1 T1



1 5











T1

T1

T1

Query load profile, see above

long

12345

.

6

7

8

1

2345.

678

kWh

kVArh

t1 : 1 n

Reactive energy (M2/M3)

12345

.

6

7

8

1

2345.

678

kWh

kVArh

t1 : 0 u t

12345

.

6

7

8

1

2345

.

678

kWh

kVArh

t 2 : 1 n

12345

.

6

7

8

1

2345

.

678

kWh

kVArh

t 2 : 0 u t

Tar iff (T1)

Active energy

Tar iff (T2)

Tar iff (T2)

Feature W1 ... W7: T5 ... T8

T1

T1

T1

T1

12345

.

6

7

8

1

2345

.

678

kWh

kVArh

t 3 : 1 n

12345

.

6

7

8

1

2345

.

678

kWh

kVArh

t 3 : 0 u t

Tar iff (T3)

Tar iff (T3)

T1

T1

12345

.

6

7

8

1

2345

.

678

kWh

kVArh

t 4 : 1 n

12345

.

6

7

8

1

2345

.

678

kWh

kVArh

t 4 : 0 u t

Tar iff (T4)

Tar iff (T4)

T1

T1

T2T4

T2T4

Q1: secondary calibrated

Tariff (T1)

N current (4-wire only)

Return to
main menu

display

1.8.1

3.8.1

2.8.1

4.8.1

1.8.2

3.8.2

2.8.2

4.8.2

1.8.3

3.8.3

2.8.3

4.8.3

1.8.4

3.8.4

2.8.4

4.8.4

OBIS

1.8.1

3.8.1

2.8.1

4.8.1

1.8.2

3.8.2

2.8.2

4.8.2

1.8.3

3.8.3

2.8.3

4.8.3

1.8.0

3.8.0

2.8.0

4.8.0

Hardware Controlled

Tariff Input Tb Ta

Tariff 1 0 0

Tariff 2 0 1

Tariff 3 1 0

Tariff 4 1 1

Tariff inputs Ta and Tb are each connected with refer­ence to Tn.

Level 0: < 12 V
Level 1: > 45 V (max. 265 V permissible!)

Software Controlled (not included in MID scope of approval)

In the case of meters with bus (featureW1 … W7), four
further tariffs can be selected (software controlled).

8 Overview of Bus Systems

–

LON-Bus (feature W1)
– M-Bus (feature W2)
– Modbus TCP (feature W4)
– Modbus RTU (feature W7)

Interface descriptions for energy meters with bus connection
can be found on the Internet at www.gossenmetrawatt.com.

9 Error Messages – Reset

Display

If an error occurs, the respective error code and active
energy or instantaneous power are displayed alter­nately.

Error Code Meaning Cause / Remedy

0L0volt
0VHi1

0 VHi 2

0 VHi3

1Hi1

1Hi2

1Hi3

0SYnc
0C0m

EnErgY

0cALib
0

LOVoLt error

In case of LOVoLt error (phase voltages too low), back­ground illumination, and if applicable the bus connec­tion, are deactivated. The load profile (featureZ1) cannot
be viewed as long as the error is pending.

Phase voltage < 75% Check connection
Maximum value for U1

exceeded
Maximum value for U2

exceeded
Maximum value for U3

exceeded
Maximum value for I1

exceeded
Maximum value for I2

exceeded
Maximum value for I3

exceeded
Frequency measuring

error
Interface error

Meter defective
Balancing required
DC offset too high

AnALog

Check connection

Check connection

Check connection

Check connection

Check connection

Check connection

Meter connected to direct
voltage

Check connection

Send device to
repair service

10 Repair and Recalibration

Note for Test Laboratories
Direct measuring meter: Testing is only possible with

source which supply currents superimposed on volt­ages.

Calibration Display

Display of energy values with increased resolution can
be selected for testing or calibration purposes.

➭ Press and hold the ENTER key once to this end. The

firmware version is displayed with a red back­ground.

➭ Press the UP key twice. The calibration display ap-

pears with a pink background.

See section 6.2 with regard to resolution depending on
type and feature.

Recalibration can be conducted at any time by our fed­erally approved test laboratory (EB-8) (see repair and
service address on the back of the folder).
Calibration capability is valid for 8 years in Germany.

11 Manufacturer’s Guarantee

The energy meters are guaranteed for a period of 3
years after shipment. The manufacturer’s guarantee
covers materials and workmanship. Damages resulting
from use for any other than the intended purpose or
operating errors, as well as any and all consequential
damages, are excluded.

12 Ambient Conditions

Operating temperature range –25 ... +55 °C

Storage temperature range –25 ... +70 °C

Relative humidity < 75% annual average

Elevation to 2000 m

Deployment Indoors

mechanical classification M1

electromagnetical classification E2

Protection (built-in device) front panel: IP 51

Protection terminal area IP20

13 Return and Environmentally Sound Disposal

The instrument is a category 9 product (monitoring and
control instrument) in accordance with ElektroG (Ger­man electrical and electronic device law). This device is
subject to the RoHS directive. Furthermore, we make
reference to the fact that the current status in this
regard can be accessed on the Internet at www.gos­senmetrawatt.com by entering the search term WEEE.

We identify our electrical and electronic
devices in accordance with WEEE 2012/19/EU
and ElektroG using the symbol shown at the
right per DIN EN 50419.
These devices may not be disposed of with the trash.
Please contact our service department regarding the
return of old devices.

14 Declaration of Conformity, U228x Direct conn. Meter 15 Declaration of Conformity, U238x Transformer Meter