Electrex MICO DELTA User manual

Instruction
English
Rev 01/00
MICO DELTA MICO DELTA-P MICO DELTA-485
MICO DELTA-P 2T
Max 460 VAC
Phase-Phase
L1
L3
L2
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: 460V 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.
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]
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 instructions:
- 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 discon-
nected 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 340÷420 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.
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)
340 ÷ 420 VAC
Cut the jumper for disabling set up and reset
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
L3
L2
P1 P2
S1 S2

5 WIRING DIAGRAM
L1 L1
L1
L3 L3
L3
L2 L2
L2
A+
B-
MICO DELTA-P / MICO DELTA-P 2
T
MICO DELTA-485
MICO DELTA
RS485
P1 P2
S1 S2
P1 P2
S1 S2
P1 P2
S1 S2
OUTPUT
PULSE
ALARM OUTPUT
OFF=T1
ON=T2
123
14 13 12 11
12367
14 13 12 11 89
12 3 67
14 13 12 11 8910
English
Rev 01/00
5/5 500/5
25/5 600/5
40/5 750/5
50/5 800/5
60/5 1000/5
75/5 1200/5
80/5 1250/5
100/5 1500/5
120/5 1600/5
150/5 1800/5
200/5 2000/5
/250 5 2500/5
3200/5
320/5
400/5
4000/5
Selectable CT Ratios
300/5
MICO DELTA MICO DELTA-P MICO DELTA-485
MICO DELTA-P 2T
AKSE S.r.l. via Aldo Moro, 39 - 42100 Reggio Emilia (RE) - Italy - Tel. [phone] Fax. [phone]