Itowa SINDITO User manual

BIDIRECTIONAL LEVEL IT
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USER MANUAL
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USER MANUAL
BIDIRECTIONAL
LEVEL ITW
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BIDIRECTIONAL LEVEL IT
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USER MANUAL
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BIDIRECTIONAL
LEVEL ITW
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USER MANUAL
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SINDITO
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IT IS FORBIDDEN TO FULLY OR PARTIALLY REPRODUCE THIS MANUAL, WITHOUT THE
PRIOR WRITEEN AUTHORISATION FROM SINDITO SL
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IN THE EVENT OF INFRINGEMENT, SINDITO S.L. RESERVES THE RIGHT TO UNDERTAKE THE ACTION
IT DEEMS APPROPRIATE, IN ACCORDANCE WITH THE CURRENT LAW
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SINDITO SL RESERVES THE RIGHT TO MODIFY THIS MANUAL WITHOUT PRIOR NOTIFICATION
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MALITWBIGB REV1
05-07-2017
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Approved by the Engineering Manager: X. Grau
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CONTENTS:
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1. INTRODUCTION 1
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2. GENERAL RULES OF BIDIRECTIONAL LEVEL ITW SET 2
2.1. OPERATION 2
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2.1.1. MASTER/SLAVE DIGITAL LEVEL ITW 2
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2.1.2. MASTER/SLAVE DIGITAL / ANALOG LEVEL ITW 4
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2.2. BIDIRECTIONAL LEVEL ITW 8
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2.2.1. INSTALLATION OF THE EQUIPMENT 8
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2.2.2. CONNECTIONS OF THE EQUIPMENT 8
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2.3. START-UP 13
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3. ANTENNAS 14
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3.1. ANTENNAS POSITIONING 15
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3.1.1. LINK POINT TO POINT 15
3.1.2. LINK BETWEEN VARIOUS POINTS 16
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3.2. CONNECTION DIAGRAM FOR THE ANTENNA WITH THE CABLE COAXIAL CABLE 17
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4. GUIDE OF POSSIBLE PROBLEMS AND SOLUTIONS 18
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5. CHANGE OF FREQUENCY 19
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6. GENERAL SPECIFICATIONS FOR THE BIDIRECTIONAL LEVEL ITW RANGE 21
6.1. GENERAL SPECIFICATIONS 4/4 DIGITAL LEVEL ITW 22
6.2. GENERAL SPECIFICATIONS 8/8 DIGITAL LEVEL ITW 22
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6.3. GENERAL SPECIFICATIONS 4/4 DIGITAL/ANALOG LEVEL ITW 22
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6.4. GENERAL SPECIFICATIONS 8/8 DIGITAL – 4 ANALOG LEVEL ITW 22
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7. EQUIPMENT MAINTENANCE 24
8. RECYCLING 25
8.1 PACKING 25
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1. INTRODUCTION
The manual you have is a guide to install correctly and make the start-up of the
BIDIRECTIONAL LEVEL ITW range. These equipments are specially designed for the
wireless Remote Control and teleprocessing. FM frequency and 2-GFSK codification are
used for the radio transmission. The most advanced technology and the latest generation of
microprocessors have been incorporated in the electronic design, which allows a total safety
of use.
The range of BIDIRECTIONAL LEVEL ITW systems are operating in the UHF band using the
frequencies 406MHz and 411MHz or in the frequency band 869MHz with 500mW (p.r.a.) of
maximum apparent radiated power and 25KHz of channelling (optionally 12.5KHz of
channelling).
The range of BIDIRECTIONAL LEVEL ITW systems is composed by:
•
LEVEL ITW 4/4 of 4 digital signals
• LEVEL ITW 8/8 of 8 digital signals
• LEVEL ITW 4/4 AD of 4 digitals and analog signals
• LEVEL ITW 8/8D-4A of 8 digitals and 4 analog signals
230Vac of power supply and 12Vdc is optional.
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2. GENERAL RULES OF BIDIRECTIONAL LEVEL ITW SYSTEMS
The BIDIRECTIONAL LEVEL ITW systems are composed by the following parts:
• 1 System configured as Master.
• 1 System configured as Slave.
• 2 Antennas
• 1 User’s Manual can be discharged through the website. www.itowa.com
2.1. OPERATION
The general operation of LEVEL ITW are as follows: Every time there is a change of state of
any of the digital inputs of the MASTER equipment, this variation is transmitted wireless to
the SLAVE system to enable/disable the relay output corresponding to that input, that means,
The digital input nº 1 corresponds to the relay output nº 1, the input nº 2 corresponds to
relays output nº 2 and thus till completing all the signals. Once the SLAVE have updated the
state of its outputs is transmitting the state of its inputs to the MASTER System to
enable/disable the relays output corresponding to this input, that means the digital input nº 1
corresponds to the relays output nº 1, the input nº2 with the relay output nº 2 thus till
completing all the signals
MASTER SLAVE
Digital input nº 1 Digital output nº 1
Digital input nº 2 Digital output nº 2
…. ….
Digital input nº N Digital output nº N
Digital output nº 1 Digital input nº 1
Digital output nº 2 Digital input nº 2
…. ….
Digital output nº N Digital input nº N
Analog Output nº 1 Analog input nº 1
Analog Output nº 2 Analog input nº 2
Analog Output nº 3 Analog input nº 3
Analog Output nº 4 Analog input nº 4
In addition to sending the information every time that a change of state occurs in the inputs,
every 5 minutes the MASTER system transmits the state of the inputs to refresh the
information to the SLAVE and check communications. In equipment with analogue signals the
value of these, will be updated in each communication establishment, either by digital input
change or by time refresh.
The SLAVE system does not sent the change of its inputs until is not questioned by the
MASTER system for time or change in its inputs.
2.1.1. MASTER / SLAVE DIGITAL LEVEL ITW
When connecting the MASTER / SLAVE system on the LCD screen will appear a test
consisting in different informative messages sequentially. To pass the different messages
you have to press the green pushbutton.

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 Display the Model and Type of set.
 Equipment code and Frequency band
 Equipment code and Work channel
 Status of inputs (4 or 8 depending on model).
The change of inputs status is not refreshed automatically on the message showed
on LCD screen. To refresh the information on the screen, you must do a new
sequence of display.
 Status of relays that corresponds to the inputs of SLAVE system (4 or 8 depending on
model). The change of inputs and outputs status is not refreshed automatically on
the message showed on LCD screen. To refresh the information on the screen, you
must do a new sequence of display.
 ERROR messages
o COMMUNICATION FAIL.
2.1.2. MASTER / SLAVE DIGITAL/ANALOG LEVEL ITW
When connecting the MASTER / SLAVE system on the LCD screen will appear a test
consisting in different informative messages sequentially. To pass the different messages
you have to press the green pushbutton.

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When the device is connected the following messages appear:
 Display the Model and Type of set.
 Equipment code and Frequency band
 Equipment code and Work channel
 Status of the digital inputs
The status change of the inputs is not automatically refreshed in the LCD message if
it is already on the screen. To refresh the information a new display sequence must
be performed.
 Value of the analogical inputs
The value of the inputs is not automatically refreshed in the LCD message if it is
already on the screen. To refresh the information a new display sequence must be
performed.
 Status of the relays
The status change of the outputs is not automatically refreshed in the LCD message
if it is already on the screen. To refresh the information a new display sequence
must be performed.

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 Value of the analogical outputs
The value of the outputs is not automatically refreshed in the LCD message if it is
already on the screen. To refresh the information a new display sequence must be
performed
 ERROR messages:
o ANALOGICAL INPUT OR OUTPUT NOT CONNECTED OR BELOW RANGE
An analogical input or output not connected or below the set range is
displayed as "-0%"
o ANALOGICAL INPUT OR OUTPUT ABOVE RANGE
An analogical input or output with a value over the set maximum is displayed
as "+ 100%". As security, the circuit of control of the system limits the discrete
value of the signal to the maximum value established.
o BROKEN CABLE
When a broken wire is detected in one of the outputs.
o COMMUNICATION FAILURE

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2.2. BIDIRECTIONAL LEVEL ITW
The function of the MASTER equipment is to manage the communication with the SLAVE. This
equipment is establishing the initial communication. When connecting the first time the
equipment is transmitting the state of the digital inputs and refreshing the state of its outputs
activating/ deactivating the corresponding relays, depending on the state of the inputs in the
SLAVE equipment.
The installation and connection of MASTER and SLAVE equipments are identical.
When you connect the power for first time to the equipments, the incidence relay is activated
(FE) and the following message is displayed “COMMUNICATION FAILURE” in the LCD screen.
When the communication is established between both equipments, this relays is disconnected
due there are not incidences. In case of communication failure, voltage fault, etc. the
equipments will disconnect the relays that were activated and the incidence relay (FE) will be
activated and the corresponding message is appearing on the LCD display.
NOTICE: IF WE ARE GIVING POWER FIRST AT THE SLAVE EQUIPMENT, THE
INCIDENCE RELAY WILL BE CONNECTED IN THE SYSTEM INDICATING THE
FAILURE ON COMMUNICATION, WHILE THE MASTER IS NO CONNECTED TO
THE VOLTAGE
2.2.1. INSTALLATION OF THE EQUIPMENT
NOTICE: BEFORE ANY HANDLING, CHECK THAT THE EQUIPMENT IS NOT
CONNECTED TO THE NET NOR HAS ANY VOLTAGE, OTHERWISE MUST BE
DISCONNECTED.
The equipment is designed to get an easy and quick installation.
It is recommended to install the equipment in a place protected from the inclemency of the
weather, as well as to put it in a fix place. To facilitate this operation we are supplying the
equipment with some holes that allow fixing it to a wall or at any other element with screws
and studs.
2.2.2. CONNECTIONS OF THE EQUIPMENT
NOTICE: WHEN RAISING THE TOP, BE SPECIALLY CAREFUL WITH THE
CONNECTION HOSE OF THE MOTHER BOARD TO THE DISPLAY CIRCUIT
(LEDS OR LCD SCREEN)
The outputs of the elements and / or measuring instruments must be connected to the
transmitter inputs, such as: buoys, alarms, magneto thermal jumps, stop / start confirmation,
etc.
To facilitate the connection of these signals to the circuitry of the equipment, there are various
terminals for this purpose, also in the following pages are attached the wiring diagrams of the
equipments.
The control elements of the pumps or machinery are connected with the receiver through the
relays outputs.

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POWER SUPPLY Connection

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INPUT Connection
For models with analogical inputs, the value of the analogical inputs is configured on the
factory with one of the following ranges: 0-20mA / 4-20mA / 0-5V / 0-10V, but depending on the
model it can be changed through the jumpers of the following table.
Input
Input type Analog 1 Analog 2 Analog 3 Analog 4
0 - 10Vcc -- -- -- --
0 - 5Vcc J5 J6 J7 J8
0 – 20mA J1 – J5 J2 – J6 J3 – J7 J4 – J8

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OUTPUT Connection
For models with analogical outputs, the value of the analog outputs is factory set to one of the
following ranges: 0-20mA / 4-20mA / 0-5V / 0-10V.
2.3. START-UP
After connecting all the elements (buoys, flow meters, control boxes of pumps, etc.) and
further verification including the antenna, we will give voltage to the equipment. It is
recommended to give voltage first to the receiver and after to the transmitter.
It must be checked that every one of the signals from the transmitter is received correctly,
that the appropriate relays and led are activated on the receiver
NOTICE: CAUTION THE EQUIPMENT MUST NOT BE STARTED WITHOUT THE
CORRESPONDING ANTENNAS DULY CONNECTED.
THE ANTENNA CABLE MUST BE 50 Ω OF IMPEDANCE. THE USE OF THE
RG-213 ANTENNA CABLE IS RECOMMENDED
THE ANTENNA CABLE MUST HAVE THE END WELDED WITH TIN TO THE
END OF THE ANTENNA CONNECTOR
THE MESH OF THE ANTENNA CABLE MUST HAVE CONTACT WITH THE
ANTENNA CONNECTOR HOUSING
CHECK THAT THE ANTENNA CABLE HAS CONTINUITY EXTREME TO
EXTREME AT LEVEL OF END AND MASS AND THERE IS NOT SHORT-
CIRCUITS BETWEEN THE END AND THE HOUSING OF THE CONNECTOR
OF THE ANTENNA.

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3. ANTENNAS
It is recommended to install the antenna in a place with good visibility and free of obstacles
that can obstruct the correct emission/reception of the signal. If necessary some masts or
turrets has to be installed.
The transmitter and receiver antennas has to be faced each other
According with the data given by the customer, it is chosen the most appropriated antenna to
cover the indicated distances of link and the orographic characteristics of the zone.
The main characteristics of the antennas supplied with the system are the following:
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DIRECTIONAL ANTENNAS
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MODEL
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GAIN (dB.)
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Nº ELEMENTS
YTD-3 (406-412MHz) 5 3
YTD-5 (406-412MHz) 8 5
YTD-10 (406-412MHz) 12 10
YTD-3 (869MHz) 5 3
YTD-5 (869MHz) 8 5
YTD-12 (869MHz) 14 12
Table 3.1.
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OMNIDIRECTIONAL ANTENNAS
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MODEL
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GAIN (dB.)
TMB/N3 (406-412MHz) 3
TMB/N6 (406-412MHz) 6
ROD YTM 5/8 (Only for receiving) 0
TMB/N6 (869MHz) 6
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Table 3.2.

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3.1. ANTENNAS POSITIONING
3.1.1. LINK POINT TO POINT
TRANSMITTER – TANKS
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3.1.2. LINK BETWEEN VARIOUS POINTS

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3.2. CONNECTION DIAGRAM OF THE ANTENNA WITH THE COAXIAL
CABLE RG-213

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4. GUIDE OF POSSIBLE PROBLEMS AND SOLUTIONS
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PROBLEM
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LED INCIDENCE ON /
LCD MESSAGE “COMMUNICATION FAILURE”
REASON The antenna connectors are badly installed(communicated or short-
circuited, see page 10)
SOLUTION Check the joining of the connectors with coaxial cable
REASON Connector N female chassis broken in the inside part of the system
SOLUTION Request ITOWA a new connector
REASON Interferences or frequency matching with other systems
SOLUTION Make the change of frequency channel
REASON Misguided antennas
SOLUTION Put the antennas in a new direction
REASON Antennas not suitable for this link
SOLUTION Consult ITOWA about the most suitable antennas for this link.
Table 4.1
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PROBLEM
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NO POWER OR NOTHING WORKS
REASON Failure in power connections
SOLUTION Check supply voltages
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Table 4.2
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PROBLEM
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NOT RESPOND ANY RELAY OF THE RECEIVER
REASON Poor connection or operation of the measuring equipments (buoys,
floats, sensors, etc.)
SOLUTION Check the connections of the measuring equipments with the
transmitter inputs.
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Table 4.3

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5. CHANGE OF FREQUENCY
In case that the system does not link correctly due to the interferences in the programmed
frequency band, the working channel can be changed manually.
NOTICE: THE CHANGE OF WORKING CHANNEL MUST BE DONE IN THE
TRANSMITTER AND IN THE RECEIVER.
YOU MUST MAKE SURE TO ASSIGN THE CORRECT FREQUENCY BAND
ACCORDING TO THE RADIO MODEL OF YOUR SYSTEM.
The change of frequency can be done indistinctly, when the system is working or without
power.
It is recommended to start the change of frequency on the receiver system and after on the
transmitter. In case that the systems were working, the change will be done after 10 seconds
approximately.
To make the change you must open the system and to log into the changing frequency
control board.

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FREQUENCY BAND:
The change of the frequency band is done through the configuration of a jumper, as you can
see in below picture.
Be sure that the frequency band is the one that corresponds to the model of system you are
handling, BAND -869 MHz / 406 MHz / 411 MHz If you select band 869MHz for a system
manufactured to work at 406-411 MHz band or vice versa the system WON’T work.
WORKING CHANNEL:
The change of the working channel is done through a rotary switch of 10 positions (0/9). Each
position has assigned a definite working channel, as you can find in the below configuration
table.
Table 5.1
Be aware to assign the same frequency band and cannel to the transmitter and to the
received.
Remember if you have a system in the 406-411MHz band, installed in Spain, you must
Apply for a licence to the DGTel and once assigned the frequency and working
channel, legally, you cannot modify it.