DEMAG DRC-MJ D3 User manual

211 338 44
User manual/assembly instructions
DRC-MJ D3 hand-held transmitter
719 IS 975
081019 enGB
43666644.eps

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211 338 44.indd / 081019
Contents
Manufacturer’s address:
Original user manual/assembly instructions
Demag Cranes & Components GmbH
Forststrasse 16
40597 Düsseldorf, Germany
www.demagcranes.com
[email protected]
1 General 4
1.1 Information on DRC-MJ hand-held transmitters 4
1.2 Information on the user manual/assembly instructions 4
1.3 Copyright 4
2 Safety 5
2.1 General 5
2.2 Information on the control system 5
2.3 Intended use 6
2.4 Operating personnel requirements 7
2.5 Personal protection equipment 8
2.6 Spare parts 9
2.7 Regular inspections 9
3 Device selection 10
3.1 DRC-MJ scope of delivery 10
3.2 Available radio receivers 10
3.3 Accessories for DRC-MJ hand-held transmitters 10
3.4 Accessories for crane identification 10
3.5 Casing seal/seal breakage 10
4 Technical data 12
4.1 Dimensions 12
4.2 International postal approval 13
5 Transport, packing, storage 14
5.1 Transport inspection 14
5.2 Packing 14
5.3 Storage 14
6 Design and function 15
6.1 Transmitter/receiver interface 15
6.2 Transmission method 15
6.3 Power supply for DRC-MJ hand-held transmitters 16
6.4 Identification and screen functions 19
7 Putting DRC radio controls into operation for the first time 26
7.1 Safety warnings 26
7.2 Safety instructions for operation 26
7.3 Personnel requirements 27
7.4 Putting into operation 27
7.5 Putting a radio control system into operation with a DRC-MJ D3 hand-held
transmitter 28
7.6 Single-transmitter operation 29
7.7 Configuration of a radio control system for DRC-DR 33
7.8 Releasing a receiver 34
7.9 Multiple transmitter operation 36

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Further documents:
DRC-MP D3 operating instructions 211 270 44 719 IS 975
DRC-DR D3 operating instructions 211 267 44 719 IS 975
8 Using DRC radio controls 42
8.1 Safety warning 42
8.2 Personnel requirements 42
8.3 Check before starting work 43
8.4 Crane operation/Run 44
8.5 Taking the equipment out of service at the end of the shift (standby or
switching off) 48
8.6 Radio control system operating statuses 49
9 Information menu in connection with DRC-DR 51
9.1 Activating the information menu 51
9.2 Selecting the information source 51
9.3 Activating the crab selection screen 51
9.4 Start screen 51
9.5 Navigating in the information menu 51
9.6 Information menu data 52
10 Fault elimination 53
11 Disposal 56
11.1 Personnel requirements 56
11.2 Disposal of the radio control system 56
12 Information 57
12.1 After-sales service 57
P1 Menu for programming the DRC-MJ D3 hand-held transmitter parame-
ters 60
P1.1 Activating the menu 60
P1.2 Further information on the parameters 61
P1.3 Displaying and entering reversal of the direction of the lifting/lowering mo-
tion, parameter code 507 63
P1.4 Activating the electronic gate for the left joystick, parameter code 508 64
P2 FCC and Industry Canadian information 60
P2.1 FCC information 60
P2.2 Industry Canadian information 61

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1 General
You have purchased a Demag product.
This user manual/assembly instructions is designed to provide the owner and
operating personnel with appropriate instructions for safe and correct operation
and for commissioning.
Every individual given the task of transporting, installing, commissioning,
operating, maintaining and repairing our products and additional equipment must
have read and understood
• the user manual/assembly instructions
• the safety regulations and
• the safety instructions in the individual chapters and sections.
The user manual/assembly instructions must be available to operating personnel
at all times in order to prevent operating errors and to ensure smooth and trouble-
free operation of our products.
This user manual/assembly instructions is an integral part of the DRC-MJ D3
hand-held transmitter.
They must be kept available in the immediate vicinity at all times.
DRC-MJ D3 hand-held transmitters may only be operated by personnel who are
fully familiar with the user manual/assembly instructions.
If special designs or additional options are ordered or the latest technical
modifications are incorporated, the actual scope of supply may differ from the data
and information as well as from the illustrations described here.
If you have any questions, please contact the manufacturer.
Any and all content, texts, drawings, images and any other information are
protected within the sense of copyright law.
This user manual/assembly instructions are only intended to be used by people
who work with or on the product.
Any use beyond this is not permitted unless approved by the manufacturer in
writing.
1.1 Information on
DRC-MJ hand-held
transmitters
1.2 Information on the
user manual/assembly
instructions
1.3 Copyright

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DANGER
This warning in combination with a symbol and signal word indicates an imme-
diate danger that will result in severe injuries or death if it is not avoided.
– Follow these instructions at all times and be particularly careful and cautious.
WARNING
This warning in combination with a symbol and signal word indicates a poten-
tially dangerous situation that can result in severe injuries or death if it is not
avoided.
– Follow these instructions at all times and be particularly careful and cautious.
CAUTION
This warning in combination with a symbol and signal word indicates a poten-
tially dangerous situation that can result in medium or slight injuries if it is not
avoided.
– Follow these instructions at all times and be particularly careful and cautious.
2 Safety
The “Safety” section provides you with an overview of all important safety aspects
which are necessary for you and for the protection of individuals who work with
and on the product as well as for safe and smooth operation with the product.
Further task-related safety warnings can be found in the descriptive sections on
the individual life-cycle phases of the product.
2.1 General
2.2 Structure and mean-
ing of the instructions
2.2.1 Safety warnings Important safety information and instructions are marked by corresponding
symbols and signal words in this user manual/assembly instructions.
The following symbols and signal words are used for safety warnings to express
the nature of the hazard.
2.2.2 Structure of safety warnings
Every safety warning consists of five elements:
1 Signal word
2 Type and source of hazard
3 Possible consequences and causes
4 How to avoid the hazard
5 Safety signs
51
2
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IMPORTANT.
Operating hazard for the product.
• This symbol indicates information on appropriate use of the product.
• Failure to follow these instructions can result in malfunctions, damage or
pollution of the environment.
NOTE
• This symbol indicates useful information and tips on smooth and efficient
use of the product.
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2.2.3 Further information
DRC-MJ D3 hand-held transmitter are intended to be used as control units and
transmitter stations for DRC-DR and DRC-MP radio receivers. The radio receiver
is only referred to as DRC in the description below and, therefore, stands for both
DRC-DR and DRC-MP receivers. The scope of functions is designed preferably for
wireless control of crane installations, travelling hoist units, chain and rope hoists,
transfer carriages and similar applications.
The operator can position himself as required. He can control loads and
movements from a safe distance. He must always select a location to ensure that
all movements of the load and the crane can be monitored and any hazardous
movement can be switched off in good time. Before starting any crane movement
by actuating the control element, the operator must determine which crane is being
controlled. The DRC-MJ D3 hand-held transmitter screen shows the ID/crane
number of the crane under control. The radio-controlled crane must be identified
by means of the ID/crane number in a way that is clearly visible to the operator.
If required, a signal must be actuated prior to a crane movement for acoustic
control.
DRC transmitters and receivers meet the requirements of the standards and
regulations listed in the EC conformity declaration. The specified EC conformity
declaration is an integral part of the relevant user manual/assembly instructions.
DRC transmitters and receivers do not require any registration or operating
fees, see section 4.2 “International postal approval”. The benefits that this
provides for the user are also utilised by some other manufacturers of devices for
communications and telemetry applications. Consequently, the relevant approved
frequency ranges may be used by many transmitters at the same time, depending
on the time and location.
The state-of-the-art transmission method is provided with technical features
(frequency hopping) which are designed to ensure a minimum of conflicts for radio
operation together with other transmitter and receiver devices which use the same
frequency range.
Despite all of the technical precautions taken by the manufacturer, it cannot be
entirely excluded that the transmission characteristics of other radio systems are
impaired, in particular devices supplied by other manufacturers that use the same
frequency range, or are negatively affected by the transmission characteristics of
the system supplied by the manufacturer.
In such cases, interference or radio connection interruptions may occur, which
disrupt the communication and function of a system supplied by the manufacturer
or other manufacturers. Such impairment or interference does not constitute a
defect on the part of DRC D3 transmitters and receivers.
The manufacturer accepts no liability for wilful or grossly negligent behaviour.
2.3 Intended use

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2.4 Operating personnel
requirements
2.4.1 Responsibility of the owner Owner
The owner is the person who operates the product for commercial purposes or
lends it to third parties for use/operation. While it is use, the owner bears legal
product responsibility for the protection of individuals who work on or with the
product or any third parties.
The owner is obliged to ensure that the specified health and safety measures
comply with the latest rules and regulations and to observe new regulations over
the entire service life of the product.
Special local conditions or applications can lead to situations which are not
considered in this user manual/assembly instructions. In such cases, the required
safety measures must be defined and implemented by the owner. Necessary
measures may also relate, for example, to the handling of dangerous tools and the
provision/wearing of personal protection equipment. The user manual/assembly
instructions must, if required, be supplemented by the owner with instructions
relating to organisation of work, working procedures, authorised personnel,
supervising and reporting obligations, etc.
Owner’s obligations
The product is used for commercial purposes. Therefore, the owner is subject to
the legal obligations for health and safety at the place of work.
General safety, accident prevention and environmental protection regulations
that apply where the product is in operation must be observed and complied
with in addition to the safety warnings contained in this user manual/assembly
instructions.
The owner must ensure that
• any further working and safety instructions resulting from the risk assessment of
the control system workplaces are specified in operating procedures.
• the user manual/assembly instructions are always kept available in the
immediate vicinity of the product for installation, operating, maintenance and
cleaning personnel.
• personnel are trained in accordance with the work to be performed.
• the product is only operated when in safe and proper working order.
• safety devices are always kept freely accessible and are checked regularly.
• national regulations for use of the product are observed.
• any specified regular checks and inspections are carried out on time and are
documented.
The owner is urged to develop procedures and guidelines for any malfunctions, to
instruct users and to affix these instructions at a suitable place where they can be
easily seen.
A specialist must have the following qualifications:
• Specialist training as well as knowledge and experience
• Must have knowledge of the relevant specialist terms and regulations
• Can assess the tasks given to him or her, identify potential hazards and take
suitable safety measures
2.4.2 Qualification of personnel

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Designation Activities Qualification
Operator • Checks correct operation of the safety devices
• Operates the product
• Has been trained to operate the product
• Has been informed about possible hazards resulting from
inappropriate conduct
Repair personnel • Repairs malfunctions and defects
• Takes the product out of operation
• Is authorised to be present in the entire surroundings of the
machine
• Trained specialist personnel with mechanical or electrical
training
• Has been trained in the repair of the product by the
manufacturer or by a company authorised by the
manufacturer
Service personnel • Performs safety-related modifications or repairs to the product
• Is authorised to be present in the entire surroundings of the
machine
• Trained specialist personnel with mechanical or electrical
training
• Has been trained to service hoists and cranes by the manu-
facturer
Experienced technician • Can judge the safe operating condition of the product • Technical training and experience as well as sufficient knowl-
edge in the field of the product
• Training relating to relevant national industrial safety
regulations, codes of practice, accident prevention
regulations, directives and generally accepted engineering
standards enabling them to judge the safe operating condition
of the product.
2.4.3 Target groups
A Wear a helmet.
B Wear protective clothing.
C Wear safety shoes.
D Wear gloves.
E Wear safety glasses.
F Wear hearing protection.
G Read the documentation.
Whenworkiscarriedoutonorwiththe control system, the following protective equipment is recommended to be worn according to the owner’s hazard assessment:
43649444_xml.eps
ACDB
EG F
2.5 Personal protective
equipment
When work is carried out on or with the product, the following protective equipment
must be worn according to the owner’s risk assessment:
• Safety helmet to be worn by everybody in the danger zone.
• Protective clothing, closely fitting working clothes (low tear strength, no loose
sleeves, no rings or any other jewellery, etc.).
• Safety shoes to protect against heavy falling parts and against slipping.
• Gloves for handling the wire rope.
• Protective glasses in production areas.

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Only genuine Demag spare parts may be used.
2.6 Spare parts
The use of unauthorised spare parts renders null and void any claims for warranty,
service, damages or liability against the manufacturer or his appointed personnel,
dealers and representatives.
The owner of DRC-MJ D3 hand-held transmitters may be obliged to carry out
regular inspections by national industrial safety legislation and regional regulations.
This is regulated by the rules and regulations of the German Social Accident
Insurance (DGUV) in the Federal Republic of Germany, for example. These specify
that
• DRC-MJ D3 hand-held transmitters must be inspected before they are put into
operation and
• DRC-MJ D3 hand-held transmitters must be inspected regularly.
The owner is obliged to ensure that DRC-MJ D3 hand-held transmitters comply
with the latest rules and regulations and to observe new regulations at all times.
If no comparable inspection regulations or requirements apply at the place where
DRC-MJ D3 hand-held transmitters are operated, we recommend compliance with
the above-mentioned regulations.
2.7 Regular inspections
CAUTION.
Defective spare parts
Incorrect or defective spare parts can cause damage, malfunctions or
complete failure of DRC-MJ D3 hand-held transmitters.
Only use genuine spare parts or parts approved by the manufacturer.

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Part no.
DRC-MJ D3 hand-held transmitter 773 760 44
Contents of the complete delivery:
• 1 DRC-MJ D3 hand-held transmitter
• 1 rechargeable battery pack 2,4 V/ReCyKo/2050 mAh 773 499 44
• 1 plug-in charger (rechargeable battery) 110 – 230 V 50/60 Hz 773 438 44
• 1 DRC-MJ D3 hand-held transmitter user manual/assy. instructions 211 338 44
• 1 set of button symbols for DRC-MJ D3 hand-held transmitter 773 465 44
DRC-DR D3 radio receiver 711 333 45
Aerial for DRC-DR D3 receiver for (DR/DMR) 711 445 45
DRC-MP D3 radio receiver 24 V AC/DC – 240 V AC 90/60 Hz 773 794 44
Spare carrying strap, length approx. 22 cm 773 425 33
External charger 773 501 44
To charge a battery pack (773 499 44)
Connection to 230 V supply by multi-norm connector
2,5 hours for full charge, automatic trickle charging
Spare parts set for DRC-MJ D3 hand-held transmitter 773 415 33
Contents:
1 x upper housing cap,
1 x lower housing cap
5 x bridge contacts
Wall bracket 773 688 44
Fixed storage position for DRC hand-held transmitters. Rugged metal design. A
hand-held transmitter can be placed in it with a plug-in charger connected to it.
Coding labels Black background foil 895 639 44
Coding labels 7 segments (yellow) 895 640 44
Large cross-travel direction foil (dimensions: 500 x 200 mm) 895 635 44
Large long-travel direction foil (dimensions: 500 x 200 mm) 895 637 44
Small cross-travel direction foil (dimensions: 100 x 250 mm) 851 525 44
Small long-travel direction foil (dimensions: 100 x 250 mm) 851 526 44
DRC-MJ D3 hand-held transmitters are sealed in the factory.
DRC-MJ D3 hand-held transmitters may only be opened for repair purposes by
authorised parties.
3 Device selection
NOTE
Breaking a casing seal such as this will result in the loss of all warranty rights.
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3.1 DRC-MJ scope of
delivery
3.2 Available radio
receivers
3.3 Accessories for
DRC-MJ hand-held
transmitters
3.4 Accessories for crane
identification
3.5 Casing seal/seal
breakage

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• Mini joystick 1x variable 1 axis
variable control element, mechanical latch at slow speed
1x variable 2 axes
variable control element, mechanical latch at slow speed, control for diagonal
travel motions possible. Can be optionally switched off via electronic gate.
• STOP button 1-stage
• Signal/check button 2-stage
• Button for special functions 1-stage
• LCD, 2-colour, illuminated Graphical, 35 x 25 mm
• LCD, operating temperature -20 °C to 55 °C
Transmitter output (ERP) Max. 20 dBm (100 mW)
Typical range Approx. 100 m
Frequency range 2,4 GHz ISM band (2405 - 2480 MHz)
Type of enclosure IP 55
Weight
DRC-MJ D3 hand-held transmitter with battery 450 g
DRC-MJ D3 hand-held transmitter without battery 395 g
Supply voltage 110 - 230 V, 50/60 Hz
Type AA (LR6), IEC 60086
Capacity 2050 mAh
Service life of battery Approx. 1000 charging cycles
Temperature range
– Quick charging 10 °C to +25 °C
– Charging 0 °C to +45 °C
– Discharging -20 °C to +50 °C
Charging time Approx. 2,5 hours
Weight 55 g
Operation with one battery charge Approx. 60 hours
4 Technical data
Control elements
Screens
Battery charger
NiMH rechargeable battery
4.1 Dimensions DRC-MJ D3 hand-held transmitter
43666544.eps
Radio transmission
Enclosure

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4.2 International postal
approval
DRC D3 transmitters and radio receivers in the standard delivery form can be
operated without any registration or operating fee in the following countries:
Countries Frequency range
Austria
2,4-GHz ISM band
Belgium
Bulgaria
China
Croatia
Cyprus
Czech Republic
Denmark
Estonia
Finland
France
Germany
Greece
Hungary
Iceland
India
Ireland
Italy
Latvia
Liechtenstein
Lithuania
Luxembourg
Malta
Netherlands
Norway
Poland
Portugal
Romania
Slovakia
Slovenia
Spain
Sweden
Switzerland
United Kingdom (England,
Scotland, Wales, Northern Ireland)
United States of America (USA)

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5 Transport, packing, storage
5.1 Transport inspection
5.2 Packing
5.3 Storage
• Check that the delivery is complete and check it for any transport damage
immediately on receipt.
• If any transport damage is visible from the outside, only accept the delivery on
condition. Note the scope of damage in the shipping documents/delivery note of
the forwarding company and lodge a claim.
• Lodge a claim for any defects that are not immediately detected as soon as
they are discovered, since claims for damages may only be asserted within the
relevant claim notification periods.
If no agreement has been made on the return of the packing material, separate the
materials according to type and size and make them available for further use or
recycling.
Environmental protection:
• Always dispose of packing materials in an environmentally compatible way and
according to locally applicable disposal regulations.
• If required, utilise the services of a recycling company.
Until they are installed, DRC radio controls and their accessories must be kept
closed and may only be stored under the following conditions:
• Do not store outdoors.
• Store in dry and dust-free places, relative air humidity: max. 80%.
• Do not expose to aggressive media.
• Protect against direct sunlight.
• Avoid mechanical vibrations.
• Storage temperature: -25 to +55 °C.
• Avoid strong temperature fluctuations (condensation).
• Check the general condition of all parts of the packing at regular intervals. If
required, refresh or renew rust protection.
• If stored in a damp location, the DRC radio control system must be packed tight
and protected against corrosion (use desiccant).

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6 Design and function
Demag DRC D3 radio control systems are designed for the wireless control of
hoist units and cranes. They are the man/machine interface for manually controlled
crane installations. The relevant EU directives and standards are complied with for
this application.
A DRC D3 radio control system consists of one or more transmitters as well as at
least one or more receivers.
This user manual/assembly instructions refers to DRC-MJ D3 hand-held
transmitters in combination with matching DRC radio receivers.
• The Demag DRC-DR radio receiver is a PCB that is designed to be installed
in the electric equipment cover of a DR or DMR hoist unit. The interface of this
receiver component to the crane control system is the CAN safety bus and the
power supply via the DR/DMR electric equipment.
The DRC-DR radio receiver is only suitable for operation with a DR/DMR hoist
unit.
• The Demag DRC-MP radio receiver is a complete unit with its own enclosure
and power supply from the control voltage network of the crane installation.
Relay contacts for the individual control commands and the emergency-stop
circuit form the interface of this unit to the crane control system. An additional
semiconductor output with pulse width modulation is provided for variable-
speed crane drives.
DRC-MP radio receivers can be used for a wide range of applications.
Demag DRC radio receivers are equipped for bi-directional radio transmission and
transmit information to the DRC-MJ D3 hand-held transmitter. This increases the
safety and reliability of the radio system. Status information for the crane control
system and the receiver is shown on the screen of the DRC-MJ D3 hand-held
transmitter.
Frequencies in the so-called 2,4 Ghz ISM band are used for transmission of radio
signals between transmitters and receivers.
The proprietary radio transmission method used meets the most demanding
requirements in terms of transmitter density and co-existence with other equipment
that operates in the 2,4 GHz ISM band.
The radio transmission method combines various transmission mechanisms:
A frequency-hopping system ensures that radio transmission is robust and
highly resistant to interference – an adaptive characteristic (LBT) combined with
this enables interference with neighbouring radio applications to be effectively
eliminated.
6.1 Transmitter/receiver
interface
6.2 Transmission method

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DRC-MJ D3 hand-held transmitters are supplied with power by the rechargeable
battery pack included in the scope of delivery or by two size AA (LR6) NiMh
rechargeable batteries. The batteries must be charged in good time with the
appropriate plug-in charger. The ambient temperature must be between +10° C
and +45° C for the charging process.
The battery capacity is shown on the screen of the DRC-MJ D3 hand-held
transmitter. The charging status of the battery corresponds to the dark surface of
the battery icon.
For a new battery, the full battery icon represents a useful operating period of
approx. 60 hours for DRC-MJ D3 hand-held transmitters when they are switched
on.
If only a residual charge is shown, connect the DRC-MJ D3 hand-held transmitter
to the charger at the next opportunity. If the battery icon is empty, the DRC-MJ D3
hand-held transmitter must be immediately connected to the charger.
The operating time that can be achieved by a DRC-MJ D3 hand-held transmitter
with one battery charge depends on the operating mode of the DRC-MJ D3 hand-
held transmitter, the ambient temperature and the age of the batteries.
Approx. 60 hours of operation can be achieved with one battery charge if a
DRC-MJ D3 hand-held transmitter is continuously switched on.
The following measures reduce power consumption:
• Change to Standby during breaks in operation (see section 8.5 on page 47).
• Switch the transmitter off (see section 8.5 on page 47).
Further measures to reduce power consumption include switching off the
background illumination and the vibration alarm (see section P1.2 on page 60).
When this battery icon is displayed, charge the batteries immediately
using the plug-in charger included in the supply.
If the batteries are not charged immediately, the battery icon will start to flash and
the DRC-MJ D3 hand-held transmitter will switch off after a few seconds. A low
battery capacity is also indicated by the vibration alarm.
Quick charging of the batteries with the DRC-MJ D3 hand-held transmitter is only
possible at ambient temperatures from +10 °C to +45 °C. If the temperature is
higher or lower than this range, the charging process is aborted and the system
automatically switches over to trickle charging.
6.3 Power supply for
DRC-MJ hand-held
transmitters
6.3.1 Display of available battery
capacity
6.3.2 Charging the batteries
Charging socket
43666844.eps 43666744.eps
LED
IMPORTANT
The rechargeable batteries integrated in the DRC-MJ D3 hand-held transmitter
must only be charged with the original plug-in charger unit. The use of other
charger units can result in permanent damage to the DRC-MJ D3 hand-held
transmitter.
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Plug-in charger
110-230 V 50/60 Hz

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211 338 44.indd / 081019
The charging process is monitored and controlled by the electronics in the
DRC-MJ D3 hand-held transmitter. Partly discharged batteries can also be
charged.
To charge the batteries, proceed as follows:
– Plug the charger unit into a power socket.
– Plug the connecting cable into the charger socket of the DRC-MJ D3 hand-held
transmitter.
The icon will appear on the screen.
The red LED flashes at 2 Hz.
The DRC-MJ D3 hand-held transmitter generates an acoustic signal.
The hand-held transmitter will be charged.
The DRC-MJ D3 hand-held transmitter changes to standby mode. The crane
cannot be operated.
The charging process comprises quick charging and trickle charging modes.
Quick charging: This process takes approx. 2 hours if the battery is empty, it
charges the battery to a charge level of approx. 100%.
Trickle charging: At the end of the quick-charging phase, the system switches
over to trickle charging mode with a lower charging current
so that the DRC-MJ D3 hand-held transmitter can remain
connected to the charger for any period of time. This also
indicated by an acoustic signal.
Icon when the charging process has been completed. The
red LED goes out.
Icon to show there is no battery fitted.
Icon for battery errors.
This icon appears if a battery problem occurs, e.g.:
• batteries are defective,
• batteries are too old,
• attempt to charge non-rechargeable batteries.
Defective batteries must be replaced by new ones (see section 6.3.3)
43649444_xml.eps
ACDB
EG F
Important
To ensure sufficient charging of empty batteries, the DRC-MJ D3 hand-held
transmitter must be connected to the charger for at least 2 hours. The full
battery icon is not sufficient after the charger plug is disconnected, as this icon
already appears after a only brief period of charging.
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211 338 44.indd / 081019
NOTE
If primary cells are used in the DRC-MJ D3 hand-held transmitter, it must not
be connected to the charger to avoid any damage caused by overheating
during the attempt to charge them.
i
In exceptional situations, if no charged batteries are available, the DRC-MJ D3
hand-held transmitter can be operated with two size AA (LR6) 1,5 V primary cells
to EN/IEC 60086. We recommend the use of Duracell and Varta brand alkaline
batteries. Primary cells cannot be recharged.
Observe local legal regulations for the correct disposal of old batteries and
rechargeable batteries.
Old batteries and rechargeable batteries must be given to regional recycling
systems or can be returned to us at no cost. They must never be disposed of with
domestic refuse.
6.3.3 Replacing the batteries The rechargeable batteries in the DRC-MJ D3 hand-held transmitter age as a
result of charging/discharging cycles and continuously lose their charge capacity.
We recommend that the rechargeable batteries be replaced after a year, at the
latest. Rechargeable batteries must be immediately replaced if the relevant icon for
a battery failure is displayed.
The NiMh rechargeable batteries supplied with the DRC-MJ D3 hand-held
transmitter have been specifically selected for the requirements of this radio
control system. The electric and mechanical features of the DRC-MJ D3 hand-held
transmitter and rechargeable batteries have been matched to fulfil all requirements
for smooth, safe and reliable operation.
For replacement, use rechargeable battery pack, part no. 773 499 44.
The use of non-approved rechargeable batteries can result in DRC-MJ D3 hand-
held transmitter operating malfunctions or lasting damage to the charger and the
DRC-MJ D3 hand-held transmitter.
When replacing the rechargeable batteries, check the contacts in the battery
compartment for sufficient contact pressure. New rechargeable batteries must fit
tightly between the contact surfaces.

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6.4 Identification and
screen functions
6.4.1 DRC-MJ D3 hand-held
transmitter
The LED in the DRC-MJ D3 hand-held transmitter indicates the operating status of
the hand-held transmitter:
LED Operating status
Off Hand-held transmitter is switched off or in Standby mode
Red continuously on Hand-held transmitter is in Stop mode
Flashing green Hand-held transmitter is in Run mode
Flashing red Hand-held transmitter is in quick charging mode
Screen
LED Charging socket on the side of the housing
STOP button
43666844.eps
Joystick for long and cross-travel motions
2 function keys
Horn
43666944.eps
Yellow symbol
against black
background
Black symbol
against yellow
background
Button symbols
Joystick lifting/lowering motion

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NOTE
Solvents, benzene, degreaser, etc. can damage the button material.
i
All buttons on the DRC-MJ D3 hand-held transmitter are provided with the
corresponding foil symbols as standard.
If requested by the owner, other symbols can be applied to the radio control
system.
The owner then has to remove the existing symbols and apply the required
symbols. Note that the functions of the individual buttons are pre-defined when the
radio control system is used in connection with a DR/DMR hoist unit.
To replace the symbols, proceed as follows:
• The buttons must be free of adhesive, dust and grease. Clean, as required, with
spirit or alcohol.
6.4.2 with LED screen
42055744.eps
42694944.eps
K564
0005
DRC-MP radio receiver screen
Battery capacity Crane ID Radio signal strength
1st main row with
large icon or numerical
display
Selected crab(s)
2nd main row with alpha-
numerical display
The DRC-MJ D3 hand-held transmitter has a screen. All important data that are
needed for operation of the crane to be controlled are shown on the screen.
The number of information items displayed varies depending on the type of radio
receiver. The scope of display functions includes the general displays which are
available for both DRC radio receiver types. Additional information can only be
used with DRC-DR radio receivers.
At temperatures below 0 °C, the contrast of the LCD screen is reduced and it takes
longer for the characters to change.
– Remove the symbol required for the relevant function from the symbol sheet.
Attach the adhesive symbols to the relevant function key. (See the button
designation diagram on page 19 for hoist unit functions)

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Crane ID K564
The crane ID shows the crane to which the DRC-MJ D3 hand-held transmitter has
been assigned. The crane ID is saved in the DRC radio receiver and can only be
entered via the DRC-MJ D3 hand-held transmitter.
Display of selected crab(s)
The screen to show the selected crabs is only active if there are two crabs and
both can be operated with one radio control system.
Symbol Meaning
I Crab 1 is selected
II Crab 2 is selected
I+II Crabs 1 and 2 are selected
6.4.2.1General display
Symbol Meaning
Full signal strength
50% of the maximum range between DRC-MJ D3 hand-held
transmitter and DRC radio receiver reached
Weak signal: if the distance between the DRC-MJ D3 hand-held
transmitter and the DRC radio receiver increases any further, the
radio signal could be interrupted
Signal strength icon
43667044.eps
Display of radio signal strength