Itowa CTN User manual

USER’S MANUAL
MINI RECEIVER
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ANY REPRODUCTION OF THIS MANUAL IN WHOLE OR IN PART
WITHOUT THE PRIOR WRITTEN PERMISSION OF ITOWA IS
STRICTLY PROHIBITED.
OTHERWISE, ITOWA RESERVES THE RIGHT TO TAKE, IN
ACCORDANCE WITH CURRENT LEGISLATION, THE ACTIONS IT
CONSIDERS APPROPRIATE.
ITOWA RESERVES THE RIGHT TO MODIFY THIS MANUAL WITHOUT
NOTICE.
ITOWA
MAMRGB
REV 0
16-10-2018
Approved by the head of the Engineering Department : JM. Molina

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INDEX
1. INTRODUCTION.......................................................................................................................................1
2. GENERAL INSTRUCTIONS FOR THE CORRECT AND SAFE USE OF THE TRANSMITTER .............2
3. TRANSMITTER DESCRIPTION............................................................................................................... 3
3.1. GENERAL DESCRIPTION.............................................................................................................. 3
3.2. CTN MODEL ................................................................................................................................... 4
3.3. CPH MODEL ................................................................................................................................... 5
4. TECHNICAL FEATURES..........................................................................................................................6
4.1. CTN MODEL ................................................................................................................................... 7
4.2. CPH MODEL ................................................................................................................................... 7
5. INSTALLATION AND START-UP............................................................................................................. 8
5.1. TRANSMITTER INSTALLATION .................................................................................................... 8
5.1.1. CTN MODEL FIXATION ........................................................................................................8
5.1.2. CPH MODEL FIXATION........................................................................................................9
5.2. CONNECTION ...............................................................................................................................10
5.2.1. CTN MODEL CONNECTION................................................................................................10
5.2.2. CPH MODEL CONNECTION ............................................................................................... 11
5.3. POWER SUPPLY...........................................................................................................................12
5.4. START-UP ......................................................................................................................................12
6. MAINTENANCE OF THE TRANSMITTER ..............................................................................................13
7. DISPLAY OF WORKING FREQUENCY (NOT VALID FOR GCFI VERSIONS)...................................... 17
8. POSSIBLE INCIDENTS AND SOLUTIONS ...........................................................................................18
8.1. INSPECTIONS IN CASE OF FAILURE..........................................................................................18
8.1.1. FAULT LOCATION............................................................................................................... 18
8.1.2. INTERFERENCE CHECK (NOT VALID FOR GCFIVERSIONS) ......................................... 18
8.1.3. TRANSMITTER CHECK....................................................................................................... 18
8.2. SUMMARY OF POSSIBLE INCIDENTS AND SOLUTIONS..........................................................19
9. LED DISPLAY........................................................................................................................................21
10. RECYCLING...........................................................................................................................................23
10.1. PACKAGING................................................................................................................................. 23

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1. INTRODUCTION
The manual you have in your hands is a guide to the correct use of the ITOWA multi-frequency
MINI RECEIVER.
This transmitter is specially designed for remote control, without cables, Itowa receivers that
act directly on electromechanical drive machinery.
The radio signals employed use FM frequency modulation and FFSK coding. In the electronic
design, the most advanced technology and the latest generation microprocessors have been
used, which allow total safety of operation.
In order to avoid undesired manoeuvres, the transmitter is equipped with various safety
mechanisms which will be described in the following chapters. Any auto-detection of anomalies
blocks the execution of manoeuvres.
The transmitter works in the UHF band with frequencies between 433.050 and 434.775 MHz
(UN 30 and 32 of the C.N.A.F.), or between 868.000 and 870.000 MHz (UN 39 of the C.N.A.F.)
as stipulated in the telecommunications regulation I-ETS 300 220.
Contact Itowa for other certificates.
GCFI VERSION
The GCFI (Intelligent Frequency Change Management) version is equipped with an intelligent
system that allows you to switch to unoccupied frequencies randomly and automatically,
preventing interference that can cause continuous stops during operation.
NOTE: EVERYTHING RELATED TO THE CHANGE OF FREQUENCY AND WORKING
CHANNEL IN THIS MANUAL IS NOT VALID FOR THIS VERSION OF THE DEVICE.

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2. GENERAL INSTRUCTIONS FOR THE CORRECT AND
SAFE USE OF THE RECEIVER
For maximum safety in the operation of the receiver, the operator must follow the rules described in
this manual.
When carrying out any maneuver of the machine, the operator must be located in a place where he
has vision at all times of the maneuver he is carrying out. If this is impossible to achieve, the
operator must be in a place that allows him to see the maximum possible maneuver and in hidden
places he must use a signaler. Never carry out a maneuver that may have an uncontrolled part.
When the operator finishes his work with the receiver, he must lock the emergency stop (STOP
BUTTON) of the transmitter and must be careful not to leave the control of the machine accessible
to unauthorized personnel.

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3. RECEIVER DESCRIPTION
3.1. GENERAL DESCRIPTION
The receiving unit consists of a box inside which are the different electronic systems for the
reception of commands and the activation/deactivation of the relays required for each machine
manoeuvre.
The receiver assembly can be divided into three blocks (Fig. 3.1.), UHF receiver, control circuit and
relay circuit.
Fig. 3.1. Receiver block diagram
The following diagram is for GCFI versión:
Fig. 3.2. Receiver Block Diagram (GCFI)
The signal captured by the antenna is injected to the receiver, which supplies the microprocessor
with a low frequency signal in FFSK code. The control module is in charge of checking that the
information received is free of errors, then elaborating the pertinent commands to activate the
opportune relay.
For GCFI models, the transmitter becomes a transceiver in order to establish two-way
communication with the transmitter.
TRANSCEIVER
CIRCUIT
CONTROL
RELAY
TO MANEUVER
CONTACTORS
RELAY
TO MANEUVER
CONTACTORS
UHF
RECEIVER
CIRCUIT
CONTROL

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In the event of malfunction of both hardware and software, specific circuits are provided in the same
circuit control that deactivates the working manoeuvres of the receiver.
For extra security, all surveillance circuits are doubled.
3.2. CTN MODEL
This is a watertight assembly (IP65 protection) made of a highly resistant plastic material. It
contains the control and connection electronics of the transmitter.
This transmitter model, thanks to its robust design, allows its location in many situations, both
indoors and outdoors.
Figure 3.3. CTN model view

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3.3. CPH MODEL
This is a non-watertight assembly (IP50 protection) designed mainly for a location in an
electrical cabinet or similar, protected from external agents and from humidity and dirt.
The mounting system of the transmitter, standard DIN-35 rail, does not require any adaptation
process, simply place it on the rail and apply light pressure.
The connection terminal block is located in an easily accessible position for connecting the
transmitter.
Figure 3.4. CPH model view

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4. TECHNICAL FEATURES
System:
MULTIFREQUENCY
Frequency:
ISM-BAND
Number of orders:
Up to 40 (optional 56)
Possibility of incorrect operation:
10
-18
Hamming Distance:
≥6
Number of programmable codes:
16777216
Order response time:
<50 ms
Emergency active time:
<50 ms
Emergency passive time:
1900 ms
Range of action:
90 meters
Temperature range:
From -20 to 70 ºC
Frequency Bands:
UHF UN 30 from C.N.A.F. (434.050 to 434.775 MHz)
UHF UN 32 from C.N.A.F. (433.050 to 434.775 MHz)*
UHF UN 39 from C.N.A.F. (868.000 to 870.000 MHz)
I-ETS 300 220 (433.075 to 434.750 MHz)
Sensitivity:
0,3 µV
Image frequency rejection:
> 65 dB (TBD in GCFI versions)
Intermodulation protection:
> 65 dB (TBD in GCFI versions)
Rejection of the adjacent channel:
> 65 dB (TBD in GCFI versions)
* Frequency band only applicable in some countries

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Max. Switching
capacity of relays
Resistive load: 5 A to 250 Vacor 30Vdc
Inductive load load (cosØ=0.4): 2 A to 250 Vac or 30Vdc
Power supply:
230 Vac (-20% + 15%) according to EN 60047-5-1
115Vac (-20% + 15%) according to EN 60047-5-1
48 Vac (-20% + 15%) according to EN 60047-5-1
24 Vac (-20% + 15%) according to EN 60047-5-1
24 Vdc (-20% + 15%) according to EN60047-5-1
12 Vdc (-20% + 15%) according to EN60047-5-1
Max. Consumption
30 mA (230 Vac)
70 mA (115Vac)
150 mA (48 Vac)
200 mA (24Vac)
140 mA (24Vdc)
170 mA (12Vdc)
Fuses:
Emergency Stop Manoeuvre 3 A

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4.1. CTN MODEL
Connection:
Via 26-pin Itowa connector
Dimensions:
190 x 83 x 165mm.
Weight:
With fixation: 800gr.
Fixation:
By bolts, DIN rail or magnetic (optional)
Protection:
IP65
4.2. CPH MODEL
Connection:
Via accessible terminal block
Dimensions:
125 x 100 x 125 mm.
Weight:
475 gr.
Fixation:
DIN rail
Protection:
IP50
7

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5. INSTALLATION AND START-UP
5.1. INSTALLATION OF RECEIVER
The receiver should be located in an accessible area so that it can be easily handled.
*It is recalled, in compliance with RD 171/2004 of Coordination of Business Activities, that you
must guarantee the safety conditions for the maintenance of the machine in issue, especially in
its accessibility and transit areas to the points where the operator must perform his work.
In applications with external antennas, the antenna should be free of metal shields in order to
achieve a better radio link and avoid communication cuts.
5.1.1. CTN MODEL FIXATION
Optional fixation
Figure 5.1. CTN model fixing
The magnetic fixation should be placed on a metal surface with a MINIMUM THICKNESS OF 4
MM and where the two magnets make flat contact with the surface.
* ONLY APPLICABLE IN SPAIN
Standard Fixation

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ATTENTION! : ONCE INSTALLED, CHECK THAT THE UNIT IS FIRMLY ANCHORED
AND DOES NOT SLIDE.
Because of the magnetic force of the magnets, to uninstall the device make lever with a flat
screwdriver between the metal structure of the machine and the magnetic fixation.
5.1.2. CPH MODEL FIXATION
Figure 5.2. CPH model fixation
The fixation of this model of device will be performed by means of a standard 35 mm DIN rail (EN
50022, BS 5584, DIN 46277-3).

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5.2. CONNECTION
It is recommended to connect the receiver with a standard multi-cable hose. This hose will be
connected to the receiver at one end through the Itowa terminal strip supplied for the CTN
model or to the terminal block for the CPH model, while at the other end a multi-pin connector
will be placed, identical to the one used by the machine to interconnect with its conventional
button panel.
5.2.1. CTN MODEL CONNECTION
Figure 5.3. CTN model connection

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5.2.2. CPH MODEL CONNECTION
Figure 5.4. CPH model connection

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5.3. POWER SUPPLY
ATTENTION!: THE CONNECTION MUST BE MADE IN A WAY THAT DEACTIVATING
THE GENERAL SWITCH ALSO DEACTIVATES THE RECEIVER.
ATTENTION!: AS A SAFETY MEASURE, IT IS ESSENTIAL TO ENSURE A
GROUND CONNECTION USING THE CORRESPONDING PIN ON
THE CONNECTOR.
Itowa is not responsible for improper installation.
5.4. START-UP
Once the receiver has been installed, when the main switch of the machine is activated, the LEDs of the
receiver unit will light up as a test.
When starting up the transmitter, the receiver will start working by activating the stop and start relays (if
any) and the general contactor will be interlocked. From this moment on, the activation of any manoeuvre
in the transmitter will lead to the activation of the corresponding relay in the receiver. This selected relay
will remain active as long as the manoeuvre remains active in the transmitter.

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6. MAINTENANCE OF THE RECEIVER
The receiver you have purchased is made of top quality materials that ensure perfect operation and
functionality. Like any other machine or device, this receiver requires a few basic attentions that
should be satisfied. In order to increase the useful life of your receiver as much as possible, and to
avoid unnecessary repair costs, we strongly recommend you to follow the following conservation
and maintenance tips:
•Use the mounting accessories properly and adjust them in a way that the use of the receiver
is comfortable and safe.
•Avoid unnecessary impacts.
•It is advisable not to leave the receiver unnecessarily exposed to the sunlight.
ATTENTION! ORIGINAL SPARE PARTS MUST BE USED FOR ANY REPAIR AND
UNDER NO CONCEPT SHOULD THE SECURITY CHARACTERISTICS
OF THE RECEIVER BE ALTERED.
For the maintenance of the receiver, the following parts must be checked:
•The connection between the receiver and the machine's electrical system.
•The correct operation of the active and passive safety circuits.
•The correct operation of all the LEDs through the start-up test.
•Correct closing of the receiver cover and packing gland (Model CTN).
•The firm subjection of the whole assembly.
•If you have an external antenna, check that the connection is clean and free of rust.
In order to check the functioning of the active safety, it will be enough to activate the EMERGENCY
STOP on the transmitter while it’s running. The general contactor must fall immediately.
To check the function of the passive safety, disconnect the power supply or battery of the
transmitter. The general contactor should fall out after no more than 1.9 seconds.