![background image](http://html1.mh-extra.com/html/calpeda/i-mat-11-2tt-b/i-mat-11-2tt-b_operating-instructions-manual_485114027.webp)
GB
I-MAT_Ed2 - Operating Instructions
Page 27 / 136
6.4. Electrical connection
OFF
The electrical connections must be done by
a qualified electrician, in accordance with
the local standards
Follow the safety standards
Execute the ground connection
Follow the indications reported in this
manual
Be careful during electrical connection that
no piece of wire, sheath or foreign objects
fall into the frequency converter.
The supply terminal board, and the motor
terminal board accommodate cables with
maximum section as reported in TABLE
1 paragraph 20.2. In this case wiring tips
should be used.
Wrong connections could tamper the
electronic circuit of the frequency converter.
Before any kind of electrical operation on
the frequency converter, just installed wait
10 minutes.
6.5. Power supply connection
Electrical supply must comply with the description
in section 3.
If the electric control box is connected to an
electric plant with a differential switch (ELCB) or a
Ground Fault Circuit Interrupter (GFCI) as a further
protection, these devices must comply the following
characteristics:
Suitable to control leakage current and, in case of
short pulsed leakage current.
Must operate in case of a fault alternating current,
and in case of fault current with DC content, such
as fault pulse DC current and flat DC current
The electric control box must have installed a
B-type differential switch or GFCI.
These protections must be signed with the
followings symbol.
For the electrical connection of each size , refer to
paragraph 20.2
6.6. IT power grid supply configuration
IT power grid supply, is also known as "isolated
ground supply" because the star point of the power
supply is not related to ground. This kind of power
grid supply is to use an insulation controller that
constantly monitors the galvanic isolation between
ground and the various power devices.
The converter is able to work also with this typology
of power grid supply.
If the frequency inverter is to be used in an IT
mains, the relevant IT mains jumpers (identified in
the pictures at paragraph 20.2 called J...).
Contact with live components
Risk of fatal injury due to electric shock!
- Never remove the centre housing part from the
heat sink.
- Mind the capacitor discharge time.
After switching off the frequency inverter, wait 10
minutes until dangerous voltages have discharged.
6.7. Motor connection
Motor cable must be connected directly to the
output terminal board of the frequency converter.
To comply with the EMC standard a
4-pole shielded cable with external shield
protection must be used.
The motor cable must never run parallel to the
power line of the frequency converter
For the electrical connection of each size , refer to
paragraph 20.2.
6.8. Transducers connection.
A transducer is an analog instrument with an output
signal of 4-20 mA (or different) that continuously
reads a parameter of the system.
For some operating modes it is possible to connect
up to 2 transducers:
Constant pressure mode (the difference of pressure
between delivery pipe and suction pipe)
Proportional pressure mode (the difference of
pressure between delivery pipe and suction pipe)
Constant temperature mode (the difference of
temperature between delivery pipe and suction
pipe)
Night mode (a primary pressure transducer,
or temperature or flow rate, and a secondary
temperature transducer)
Transducer general characteristics Values
Nominal supply voltage
24 VDC
N° of wires
2 or 3 wires
Output signal (current)
0/4 ÷ 20mA
Output signal (voltage)
0-10V
Minimum drivable load resistance 500 Ohm
For the electrical connection of the main pressure
transducer refer to paragraph 20.3 Fig.9 and Fig.10.
For the electrical connection of the secondary
pressure transducer refer to paragraph 20.3 Fig.11
e Fig.12.
Summary of Contents for I-MAT 11.2TT-B
Page 17: ...IT I MAT_Ed2 Istruzioni originali Pagina 17 136 16 Elenco parametri di programmazione...
Page 38: ...GB Page 38 136 I MAT_Ed2 Operating Instructions 16 Parameter table list...
Page 59: ...D I MAT_Ed2 Betriebsanleitung Seite 59 136 16 Verzeichnis Programmierungsparameter...
Page 101: ...E I MAT_Ed2 Instrucciones de uso P gina 101 136 16 Lista par metros de programaci n...
Page 109: ...RU I MAT_Ed2 C 109 136 3 4 3 5 ENTER 3 6 20 3 7 3 8 5 19 30 50 50 30 60 60 0 30 30 0...
Page 110: ...RU C 110 136 I MAT_Ed2 4 4 1 10 4 2 4 3 4 4 5 X 5 1 25 X 6 6 1 i 6 2 20 1 1 6 3 20 1 2...
Page 122: ...RU C 122 136 I MAT_Ed2 16...