Electrex MICO Instructions

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The MICO range of products are manufactured by Akse S.r.l. in compliance

with EMC 89/336/EEC regulations and in accordance with the following

standards: EMISSIONS = EN 50081-1 1992; IMMUNITY= EN 50082-1

1992 (light industry)

SAFETY

This instrument was manufactured and tested in compliance with class 2 IEC 1010 and

VDE 411 standards, in accordance with group B VDE 0110 standards for operating voltages

up to 250 VACrms phase to neutral. To maintain this condition and to ensure safe operation,

the user must comply with the indications and markings contained in the following instruc-

tions:

- when the instrument is received, before beginning installation, check that it is still intact and

no damage was incurred during the transport;

- before mounting, ensure that the operating voltage and mains voltage set are the same and

then proceed with the installation;

- the power supply does not require an earth connection;

- a 30 mA T fuse should be installed in the power supply circuit to the instrument;

- maintenance and/or repairs must be carried on only by qualified, authorized personnel;

- if there is ever the suspicion that safe use is no longer possible, the instrument must be

disconnected and precautions must be taken against accidental use;

- operation is no longer safe when:

1) there are clearly visible damages;

2) the instrument no longer functions;

3) after a prolonged storage in unfavorable conditions;

4) after serious damages incurred during transport.

1.1

OPERATOR SAFETY

Read these pages carefully before installing and utilizing the instrument.

The instrument descibed in this user manual is intended for use by properly trained staff only.

Maintenance and/or repairs must be carried out by authorized personnel only. For proper,

safe use of the instrument and for maintenance and/or repair, it is essential that the persons

instructed to carry out these procedures follow normal safety precautions.

1.2

SYMBOLS

This symbol means: "Read the instructions"

POWER SUPPLY

The instrument must have a power supply with voltage ranging from 200÷240 VAC 50/60

Hz using max. cable gauge 2.5 mm

below). The instrument power supply does not need an earth connection. The instrument

requires the installation of an external 30 m AT type fuse in the power supply circuit.

30 mA T

200 ÷ 240 VAC

2.1 CONNECTION OF THE VOLTAGE INPUT

Use cables with max. gauge 2,5 mm

output. The following drawings show how to connect the screw terminals to the phases. Refer

to the detailed wiring diagram to make the correct connection of the voltage input depending

on the selected instrument on the plant it is installed into.

Max 250 VAC

Phase-Neutral

AKSE

S.r.l. via Aldo Moro, 39 - 42100 Reggio Emilia (RE) - Italy - Tel. +39.0522.924244

Instruction

ATTENTION:

and attached to the power supply terminals (see Fig.

30 mA T

200 ÷ 240 VAC

and attach them to the screw terminals for voltage

L 1

L 2

L 3

Max 250 VAC

Phase-Neutral

MICO

MICO-P

MICO3

MICO3-P

MICO3-P 2T

2.2 CONNECTION OF THE CURRENT INPUT

The instruments are equipped with terminals for connection of the current signal inputs.

Connect cables as indicated in the following diagrams.

The P1 and P2 indications identify the current correct direction.

P 1

P 2

L 1

S 2

S 1

L 2

L 3

N.B. The secondary CT must always short circuit when it is not connected to the

instrument to avoid damages and risks to the operator.

3 INSTRUMENT PROGRAMMING

The writing "WAIT" appears when the instrument is powered. After a few seconds the power

measurement will be displayed (the LED on the key is lighted).

The programming key

is located at the bottom left corner of the front panel.

To enter into programming mode, press simultaneously the key

On the display the CT selection will appear.

Pressing the key

the available CT ratio is selected (see diagram in the following

page)

Once the selection has been operated, press the programming key

up.

Pressing simultaneously the key

The CT ratio prompted by default is 5/5.

Once the instrument has been programmed it is possible to disable the key

cutting the jumper placed under the terminal cover relative to the current inputs.

To remove the terminal cover it is necessary to lever with a screwdriver in the middle of it. The

jumper is, facing the instrument, located to the right of the current inputs. Once the jumper is

cut it will not be possible to reset the kWh counter and to change the CT ratio.

To enable again the programming functions, it is necessary to restore the jumper.

Cut the jumper for disabling set up and reset

4 TECHNICAL CHARACTERISTICS

Inputs:

Input overload:

Number of scales:

Size:

Accuracy:

Weight:

IP rating :

Temperature range:

Relative humidity:

Condensation:

Isolation:

N.B. Do not espose the instrument display to the sunlight.

Rev 03/07

MICO-485

English

MICO3-485

P 1

P 2

L 1

S 2

S 1

L 2

L 3

N.B.:

In case the CT connection is

accidentally reversed, the instrument

provides an automatic compensation and,

hence, inputs will be correct.

Above feature applies to reversed voltage

connection too.

It is, however, absolutely essential to follow

the sequence of the phases

between

voltage and current

and the key

to confirm/exit set

and the key

the kWh values are zeroed.

Voltage: 250V from 20 to 800 Hz

Current: 5 A from 20 to 800 Hz

Voltage: max.264 Vrms phase to neutral

Current: max 20 Arms,

2 current scales

1 voltage scale

Lenghth

= 105 mm. (4 DIN modules)

Height

= 90 mm.

Depth

= 58 mm.

Class 2 according to IEC1036 standards

270 g.

Instrument = IP20

Front panel

= IP40

from -10°C to +40°C

R.H. max 90%

not permitted

in accordance with group B VDE 0110 standards

for 250 VACrms operating voltages.

Fax. +39.0522.924245