Electrex MICO User manual

AKSE S.r.l. via Aldo Moro, 39 - 42100 Reggio Emilia (RE) - Italy - Tel. [phone] Fax. [phone]
MICO MICO-P MICO-485
MICO3 MICO3-P MICO3-485
MICO3-P 2T
English
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)
Instruction
Max 250 VAC
Phase-Neutral
Max 250 VAC
Phase-Neutral
L1
N
L1
N
L3
L2
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
L1
N
P1 P2
S1 S2
L1
N
L3
L2
P1 P2
S1
S2
L1
N
L3
L2
P1 P2
S1 S2
Cut the jumper for disabling set up and reset
1 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"
2 POWER SUPPLY
ATTENTION:
The instrument must have a power supply with voltage ranging from 200÷240 VAC 50/60
Hz using max. cable gauge 2.5 mm2 and attached to the power supply terminals (see Fig.
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.
2.1 CONNECTION OF THE VOLTAGE INPUT
Use cables with max. gauge 2,5 mm2and attach them to the screw terminals for voltage
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.
Rev 03/07
AKSE S.r.l. via Aldo Moro, 39 - 42100 Reggio Emilia (RE) - Italy - Tel. [phone] Fax. [phone]
30 mA T
30 mA T
200 ÷ 240 VAC
200 ÷ 240 VAC
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.
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 and 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 to confirm/exit set
up.
Pressing simultaneously the key and the key the kWh values are zeroed.
The CT ratio prompted by default is 5/5.
Once the instrument has been programmed it is possible to disable the key by
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.
4 TECHNICAL CHARACTERISTICS
Inputs: Voltage: 250V from 20 to 800 Hz
Current: 5 A from 20 to 800 Hz
Input overload: Voltage: max.264 Vrms phase to neutral
Current: max 20 Arms,
Number of scales: 2 current scales
1 voltage scale
Size: Lenghth = 105 mm. (4 DIN modules)
Height = 90 mm.
Depth = 58 mm.
Accuracy: Class 2 according to IEC1036 standards
Weight: 270 g.
IP rating : Instrument = IP20
Front panel = IP40
Temperature range: from -10°C to +40°C
Relative humidity: R.H. max 90%
Condensation: not permitted
Isolation: in accordance with group B VDE 0110 standards
for 250 VACrms operating voltages.
N.B. Do not espose the instrument display to the sunlight.

AKSE S.r.l. via Aldo Moro, 39 - 42100 Reggio Emilia (RE) - Italy - Tel. [phone] Fax. [phone]
MICO MICO-P MICO-485
MICO3 MICO3-P MICO3-485
MICO3-P 2T
5 WIRING DIAGRAM
English
Rev 03/07