Technical Information
LA70 and LA70M Range Limiters
TM70 Radio Remote Controls
www.danfoss.com
Technical Information
LA70 and LA70M Range Limiters TM70 Radio Remote Controls
Revision history Table of revisions
Date Changed Rev
August 2019 Converted to ET Danfoss. 0101
2 | © Danfoss | August 2019 BC310649241051en-000101
Technical Information
LA70 and LA70M Range Limiters TM70 Radio Remote Controls
Contents
Introduction
System Description..........................................................................................................................................................................4
Application Example..................................................................................................................................................................4
Infrared Sensor.................................................................................................................................................................................. 5
LA70 Infrared Transmitter
LA70 Installation............................................................................................................................................................................... 6
LA70 Technical Data........................................................................................................................................................................7
LA70M Infrared Transmitter
LA70M Technical Specifications..................................................................................................................................................8
PC Enclosure Specifications..........................................................................................................................................................9
Covered Working Zone.................................................................................................................................................................. 9
Jumper’s Configuration............................................................................................................................................................... 10
LA70M Installation.........................................................................................................................................................................10
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Technical Information
LA70 and LA70M Range Limiters TM70 Radio Remote Controls
Introduction
System Description
TM70 radio remote control systems can be equipped with a range limitation option for applications
where the operator has to be in a particular place for safety. One example can be on overhead cranes.
When away from the working area, it deactivates the movement controls while maintaining the radio
communication.
The system consists of one or more Infrared transmitters LA70, installed either in fixed positions or on the
controlled machine, oriented in such a way that it covers the targeted working zone. In this case the
remote control transmitter is equipped with a sensor which receives the information coming from the
LA70 transmitter. This information is analyzed by the transmitter and determines if the operator has left
the working area. Consequently, outputs are deactivated.
Application Example
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Technical Information
LA70 and LA70M Range Limiters TM70 Radio Remote Controls
Introduction
Infrared Sensor
The infrared sensor is located in the remote control transmitter and its function is to receive the infrared
information coming from the LA70 transmitter.
Sensor location on the top
The transmitter receives the information from the Infra red transmitter (LA70), and checks its identity. As
soon as the sensor stops receiving the signal coming from the crane, the transmitter LED, which was
green, begins to flash in red, (in case of console box transmitters, the buzzer also beeps), in order to let
the operator know that he has moved away from the working zone. If this situation lasts longer than 5
seconds, all the active commands are cancelled, although communication is maintained with the receiver
(this parameter can be changed on the EEPROM. In this way the main contactor and the selection orders
are maintained.
In order to return to the operating mode, the operator has to move back into the working zone.
Movement orders must be disabled in order to restart movement. Once the transmitter enters the
working area, movement orders will not be ready to be used unless they have gone to neutral position.
This is to make movements start in first speed. If the remote control is provided with a Display, whenever
the transmitter is out of range, the message “Out of Range” will be displayed.
The remote control does have 4 modes of operation defined in the EEPROM:
1. Range Limiter only at start up (Electronic Key): In order to make the transmitter work, it is necessary
that the transmitter is inside the starting zone, defined by the position of the infrared transmitter.
2. Range Limiter only in operation: The transmitter can be started anywhere inside or outside of the
working area, but the movement orders will not work until the transmitter is inside the working zone.
3. Range Limiter at startup and operation: The transmitter in order to work must be inside the working
zone always.
4. Range Limiter only as an output Relay: This functionality makes the transmitter not to show “In range”
or “Out of range” situation in the transmitter itself. It will not mask any order. The information will be
sent to the receiver in order to process the information as an output relay or a condition to the relay
table.
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Technical Information
LA70 and LA70M Range Limiters TM70 Radio Remote Controls
LA70 Infrared Transmitter
This is the element installed on the machine, which generates the infrared modulated radiation with an
identity code, which permits the sensor its identification.
Emission angle in long travel direction is wider than those of cross travel direction. In this way, the
working area covered by a transmitter is similar in shape to an ellipse, whose dimensions depend on the
position of the infra red transmitter over the ground.
Approximately, the diagonals of the ellipse according to the height are the following:
h (m) D (m) ± 63º d (m) ± 40º Emission angle
6 24 10
8 32 13
10 40 17
12 48 20
14 56 23
16 64 26
18 68 29
20 70 32
In cases in which it is believed that the area covered by one transmitter is not enough, slave transmitters
can be installed.
LA70 Installation
Caution
Make sure that the machine is switched off during the assembly operation. Clear the work area and use
security clothing.
Check the power supply and disconnect the power supply to the machine.
Do not forget to connect the earth cable.
Use flame resistant cables for the connections.
Find a suitable place for the installation of the infrared transmitter, away from elements, which could
•
generate intense electrical disturbances and obstacles to the transmission of light.
Choose the correct power supply and connect it.
•
Fit the jumper selector in master position.
•
Select the code programmed in the EEPROM memory of the transmitter. The selected code on the
•
LA70 transmitter has to be the same as the one programmed on the Remote control EEPROM.
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Technical Information
LA70 and LA70M Range Limiters TM70 Radio Remote Controls
LA70 Infrared Transmitter
In cases in which the area covered by a transmitter is not enough, more LA70 transmitters can be
connected in series, programmed as slave with the jumper. In this case the code is transmitted
synchronously by the slave transmitter.
Caution
The communication connection between transmitters must be done with shielded wires.
LA70 Technical Data
LA70 Infrared Transmitter
Power supply Operating temperature Protection
48, 115, 230 Vac ± 10%; 50/60 Hz –20 ºC to +65 ºC IP55
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Technical Information
LA70 and LA70M Range Limiters TM70 Radio Remote Controls
LA70M Infrared Transmitter
The new LA70M range limiter is a modular and more compact re-styling of the LA70 range limiter.
References and descriptions of the modules and slave (expansions) connection cable.
LA70M AC / LA70M DC LA70M EX
LA70M Technical Specifications
LA70M AC and LA70M DC
AC DC
Power Supply
Power Supply Fuse
Maximum power consumption
Operating temperature range
IP ingress protection rating
Maximum range
External connection
I8 Jumper
I3 Jumper
Module LED Status
Fast assembly
External dimensions (mm)
48/115/230 VAC ± 20% 50/60Hz 8 – 35 V
0.63 A / 250 V 2 A / 250 V
20 VA
–20 ºC to +70 ºC
IP67
50 meters
M12 connector: 5 poles (female)
ON/OFF load resistor terminal
ID selector code / ID codes: “2” to “F” Hex
Hardware OK – green blinking / ERROR – switched off
Using magnets (standard configuration)
80 x 160 x 65 (Length x Width x Height)
DC
LA70M EX Slave Transmitter
DC power supply
Operating temperature range
IP ingress protection rating
Maximum range
External connections
Maximum number of expansions
LA70M XX / LA70M EX connection cable
LED signaling
Fast assembly
External dimensions (mm)
Provided by the Master module
–20 ºC to +70 ºC
IP67
50 meters
2 x M12 connectors: 5 poles (male / female)
2 (for each Master module)
10 meters M12 (male / female) supplied as spare part
Hardware OK – green blinking / ERROR – switched off
Using magnets (standard configuration)
82 x 80 x 65 (Length x Width x Height)
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Technical Information
LA70 and LA70M Range Limiters TM70 Radio Remote Controls
LA70M Infrared Transmitter
PC Enclosure Specifications
Material Base color Cover Temperature
Body: Polycarbonate
Gasket: Polyurethane Stainless steel screws Continuous: –40 to +80 ºC
Rating
Ingress Protection
Impact Resistance
Electrical Insulation
Halogen free
UV resistance
Flammability rating
Glow Wire Test
NEMA Class
RAL 7035
IP67 EN 60529
IK07 EN 62262
Totally insulated
SI / DIN-VDE 0472 Part 815
UL 508
UL 746 C 5: UL 94 5V
IEC (695-2-1) 960 ºC
NEMA 1, 4, 4X, 12, 13
Clear transparent color Short term: –40 to +120 ºC
Covered Working Zone
The covered working zone can be circular (standard configuration) or elliptical (if required as an option,
opening the LEDs about ±20º among them in one direction -> D) for each LA70M or LA70M Ex module.
Infrared emission for a circular covered zone (D=d) all LEDs in parallel assembly mode:
h (m) D (m) ± 63º d (m) ± 40º Emission angle
6 2 2
8 3 3
10 4 4
12 4 4
14 5 5
16 6 6
18 6 6
20-35 7 7
Infrared emission for an elliptical covered zone (D≠d) all LEDs in wide assembly mode:
h (m) D (m) ± 63º d (m) ± 40º Emission angle
6 7 2
8 9 3
10 12 4
12 14 4
14 16 5
16 18 6
18 21 6
20 23 7
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Technical Information
LA70 and LA70M Range Limiters TM70 Radio Remote Controls
LA70M Infrared Transmitter
Jumper’s Configuration
Jumper’s configuration and ID selector for the Master modules.
I3 ID selector; allowed range: 2 —.9, A —.F -> 14 positions
I2 NON available functionality (“Normal” position by default)
LA70M Installation
Caution
Make sure that the machine is switched off during the assembly operation. Clear the work area and use
security clothing.
Check the power supply and disconnect the power supply to the machine.
Do not forget to connect the earth cable. Use only cables supplied by the manufacturer for the
connections between the master and the slave modules (or expansions).
Find a suitable place for the installation of the infrared transmitter, away from elements, which could
•
generate intense electrical disturbances and obstacles to the transmission of light.
Choose the correct power supply and connect it.
•
Fit the jumper selector in master position.
•
Select the code programmed in the EEPROM memory of the transmitter.
•
Make sure to put the protection cork supplied with the master module in the last expansion module
•
installed.
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Technical Information
LA70 and LA70M Range Limiters TM70 Radio Remote Controls
LA70M Infrared Transmitter
Maximum number of expansions = 2 (for each Master module)
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Danfoss
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