Itowa MF2 User manual

User manual





MARMF2EN –Rev.1 - 04/2021
EN
N
Receiver MF2


Receiver MF2
USER MANUAL
2























IT’S FORBIDDEN TO FULLY OR PARTIALLY REPRODUCE THIS MANUAL WITHOUT THE
PRIOR WRITTEN AUTHORISATION FROM ITOWA.
IN THE EVENT OF INFRINGEMENT, ITOWA RESERVES THE RIGHT TO TAKE THE
ACTION IT DEEMS NECESSARY IN ACCORDANCE WITH THE CURRENT LAW.
ITOWA RESERVES THE RIGHT TO MODIFY THIS MANUAL WITHOUT PRIOR
NOTIFICATION.

Receiver MF2
USER MANUAL
3

INDEX:
1. INTRODUCTION 4
1.1. VERSIÓN GCFI 4
2. GENERAL RULES FOR THE CORRECT AND SAFE USE OF THE RECEIVER 4
3. DESCRIPTION OF THE RECEIVER 5
3.1. GENERAL DESCRIPTION 5
3.1.1. RECEIVER 16 RELAYS 5
3.1.2. RECEIVER 24 AND 32 RELAYS 6
4. TECHNICAL SPECIFICATIONS 7
4.1. GENERAL FEATURES 7
5. INSTALLATION AND START-UP 9
5.1. INSTALLATION OF THE RECEIVER 9
5.2. CONNECTION 9
5.3. START-UP 12
6. RECEIVER MAINTENANCE 14
7. CHANGE OF THE WORKING FREQUENCY (NOT VALID FOR GCFI VERSIONS) 15
8. ON-SCREEN MESSAGES 16
9. POSSIBLE INCIDENTS AND SOLUTIONS 18
10. RECYCLABILITY 20
10.1. PACKAGING 20

Receiver MF2
USER MANUAL
4

1. INTRODUCTION
The manual you are holding in your hands is a guide to the correct use of the ITOWA MF2 multi-
frequency receiver.
This receiver is specially designed to be remotely controlled, without cables, and to act directly on
electromechanically driven machinery.
The radio signals used are FM frequency modulation and FFSK coding. The electronic design is based
on state-of-the-art technology and the latest generation of microprocessors. This allows total safety in the
use of the radio control.
To prevent unwanted manoeuvres, the receiver is equipped with several safety mechanisms which will be
described in the following chapters. Any auto-detection of anomalies blocks the execution of manoeuvres.
The receiver operates in the UHF band on 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 prescribed in the I-
ETS 300 220 telecommunication standard.
Contact Itowa for other certificates.
1.1. VERSIÓN GCFI
The GCFI (Intelligent Frequency Change Management) version provides the equipment with an intelligent
system enabling it to change to vacant frequencies automatically and at random, thereby avoiding
interferences which could cause continuous downtimes during operation.
ATTENTION!: EVERYTHING RELATED IN THIS MANUAL TO THE CHANGE OF
FREQUENCY AND THE WORKING CHANNEL, IS NOT VALID FOR THE GCFI
VERSION.
2. GENERAL RULES FOR THE CORRECT AND SAFE USE OF THE
RECEIVER
In order to ensure maximum safety when operating the receiver, the operator must follow the rules
described in this manual.
When carrying out any manoeuvre of the machine, the operator must be located in a place where he can
see the manoeuvre he is carrying out at all times. If this is impossible to achieve, he must be in a place
where he can see as much of the manoeuvre as possible, and in hidden places he must use an assistant.
Never carry out a manoeuvre that may have an uncontrolled part.
When the operator has finished his work on the receiver, he must lock the emergency stop (STOP
BUTTON) of the transmitter and must take care not to leave the control of the machine accessible to
unauthorised personnel.

Receiver MF2
USER MANUAL
5

3. DESCRIPTION OF THE RECEIVER
3.1. GENERAL DESCRIPTION
The receiver assembly consists of a watertight plastic casing (IP65) inside which the different electronic
systems for the reception of commands and the activation/deactivation of the appropriate relays for each
manoeuvre of the machine are located.
This model of receiver, thanks to its robust design, allows its location in a multitude of applications, both
indoors and outdoors.
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
In the case of the GCFI version, the block diagram is shown in the figure below:
Fig. 3-2. Receiver block diagram (GCFI)
The signal received by the antenna is injected into 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, and then elaborates the pertinent orders to activate the appropriate relay.
In the case of models incorporating the GCFI version, the receiver becomes a transceiver in order to
establish a bidirectional communication with the transmitter.
In the event of malfunctioning of both the hardware and the software, specific circuits are provided in the
control circuit itself to deactivate the receiver's working operations.
For greater safety, all monitoring circuits are duplicated.
3.1.1. RECEIVER 16 RELAYS
Fig. 3-3. receiver 16 relays
UHF
RECEIVER
CONTROL
CIRCUIT
MANOEUVERS
CONTACTORS
RELAY
CIRCUIT
TRANSCEIVER
CONTROL
CIRCUIT
MANOEUVERS
CONTACTORS
RELAY
CIRCUIT

Receiver MF2
USER MANUAL
6

3.1.2. RECEIVER 24 AND 32 RELAYS
Fig. 3-4. receiver 24 and 32 relays

Receiver MF2
USER MANUAL
7

4. TECHNICAL SPECIFICATIONS
4.1. GENERAL FEATURES
System:
MULTI-FREQUENCY
Frequency:
ISM-BAND
Order response time:
<50 ms
Active emergency time:
<50 ms
Passive emergency time:
1600 ms
Range of action:
100 meters
Temperature range:
From -20 to 70 ºC
Frequency bands:
433.050 to 434.775 MHz
868.000 to 870.000 MHz
I-ETS 300 220
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)
Manoeuvres available:
16 RELAYS + 2 SAFETY STOP RELAYS
30 RELAYS + 2 SAFETY STOP RELAYS
With up to 8 analogue outputs (optional)
Max. relay switching
capacity:
Resistive load:
Inductive load (cosØ=0.4):
Maximum operating voltage:
Minimum permissible load:
5 A + 5 A at 250 Vac or 30 Vdc
2 A at 250 Vac or 3 A at 30 Vdc
380 Vac, 125 Vdc
10 mA at 5 Vdc
Number of commutations:
Resistive load:
Inductive load (cosØ=0.4):
106manoeuvres 2 A at 250 Vac or
30 Vdc
106manoeuvres 1,2 A at 250 Vac
or 30 Vdc
Power supply:
(depending on model)
48 Vac / 115 Vac / 230 Vac (-20% +15%) acc. to EN 60047-5-1
24 Vac (-20% +15%) acc. to EN 60047-5-1
48 Vdc (-20% +15%) acc. to EN 60047-5-1
24 Vdc (-20% +15%) acc. to EN 60047-5-1
12 Vdc (-20% +15%) acc. to EN 60047-5-1
Maximum consumption:
16 relays
140 mA (230 Vac)
290 mA (115 Vac)
700 mA (48 Vac)
800 mA (48 Vdc)
1350 mA (24 Vac)
1700 mA (24 Vdc)
3600 mA (12 Vdc)
32 relays
180 mA (230 Vac)
350 mA (115 Vac)
900 mA (48 Vac)
1000 mA (48 Vdc)
1700 mA (24 Vac)
2000 mA (24 Vdc)
4000 mA (12 Vdc)

Receiver MF2
USER MANUAL
8

Fuses:
Emergency Stop maneuver: 8 A
Primary transformer: 1 A / 230V ; 2 A / 115V ; 4 A / 48V
Secondary transformer: 4 A
Connection:
Using a connector to power strips
Dimensions:
Exterior (16 relays):
255 x 200 x 95 mm
Exterior (32 relays):
315 x 235 x 120 mm
Fixing:
Fixing: By bolts
Weight:
16 relays:
2,80 kg
32 relays:
4,20 kg
Protection:
IP 65
Security level:
Category 4 - SIL3 / PLe acc. to EN ISO 13849

Receiver MF2
USER MANUAL
9

5. INSTALLATION AND START-UP
5.1. INSTALLATION OF THE RECEIVER
The remote control receiver must be installed in a vertical position, fixed to the machine structure, with the
antenna pointing towards the ground and in a sheltered place to prevent it from being damaged.
It is reminded, in compliance with RD 171/2004 on the Coordination of Business Activities, that you must
guarantee the safety conditions for the maintenance of the machine in question, especially in its
accessibility and transit areas to the points where the operator must carry out his work.
1
ATTENTION: IT IS VERY IMPORTANT TO CLOSE THE COVER OF THE RECEIVER
CORRECTLY IN ORDER TO ENSURE THAT IT’S WATERTIGHT, AS THE ENTRY OF
WATER CAN DAMAGE IT. THE WARRANTY DOES NOT COVER FAULTS RESULTING
FROM IMPROPER CLOSING OF THE COVER.
Whenever the installation permits it, the antenna should be free of metallic shielding to achieve a better
radio link and to avoid communication cuts.
Itowa is not responsible for improper installation.
5.2. CONNECTION
It is recommended to connect the equipment with a standardised multi-cable hose as the one used to
connect the pushbutton panel by cable. This hose should be connected to the equipment at one end,
while the other end should be fitted with a multi-pin connector, identical to the one used by the machine to
interface with a wired keypad. This allows the remote or cable control to be interchanged by simply
connecting or disconnecting the hose.
ATTENTION: THE HORN RELAY MUST NOT BE CONNECTED TO CONTROL ANY
OTHER MANOEUVRE UNLESS OTHERWISE INDICATED.
The conductor of the manoeuvring common must be of suitable diameter, it must not exceed 2.5 mm Ø or
be less than 1.5 mm Ø, nor must two cables of 0.75 mm Ø each be placed. Under no circumstances may
the common control conductor be smaller than the diameter of the control conductors.
ATTENTION: THE CONNECTION MUST BE MADE IN SUCH A WAY THAT WHEN THE
MAIN SWITCH IS SWITCHED OFF, THE RECEIVER IS ALSO SWITCHED OFF.
For further details on the connection, please refer to the relay output sheet supplied with the receiver.
The standard receiver allows internally the selection of three different voltages (230 Vac, 115 Vac, or 48
Vac). For other models, receivers are available with a single voltage supply of 24 Vac/dc or 12 Vdc.
In the model with different supply voltages, the voltage selection is made by connecting a fuse in the
corresponding position.
1
Only applicable in Spain

Receiver MF2
USER MANUAL
10

ATTENTION: VERIFY THAT THE VOLTAGE SELECTION IS AS DESIRED BEFORE
APPLYING VOLTAGE TO THE EQUIPMENT. ALL STANDARD CONFIGURATION
RECEIVERS LEAVE THE FACTORY WITH THE VOLTAGE PRESET AT 230 VAC, BUT
AS A PRECAUTION, IT'S ADVISABLE TO MAKE SURE THAT THE SELECTION IS
CORRECT.
For the power supply connection, a three-wire cable with a cross-section of 0.75 mm2 should be used,
with two wires connected to voltage and the third (green-yellow) to earth.
ATTENTION: AS A SAFETY PRECAUTION, IT'S ESSENTIAL TO ENSURE A GROUND
CONNECTION VIA THE CORRESPONDING PIN ON THE CONNECTOR.
The following figure shows the wiring of the 16-relay receiver model:
Fig. 5-1. Power and relay connections on MF2 receiver with 16 relays.
Relay terminal block
Supply voltage
SELECT
USING THE
FUSE
Power supply
STOP relays