DEMAG DRC-DR D2 User manual

Operating instructions
DRC-DR D2 radio receiver

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Accompanying documents:
DRC -10 operating instructions 214 920 44 720 IS 975
DRC-J operating instructions 214 975 44 720 IS 975
Contents
Manufacturer Demag Cranes & Components GmbH
P.O. Box 67, D-58286 Wetter
Telephone [phone] · Telefax ([phone]
www.demagcranes.com
1 Foreword 3
1.1 Copyright 3
1.2 Customer service 3
1.3 Liability for Defects 4
1.4 Limitations of liability 4
1.5 Definitions 5
2 Safety instructions 6
2.1 Symbols 6
2.2 Appropriate use 6
2.3 Inappropriate use 8
2.4 Basic information on safety 8
2.5 Safety instructions for installation and disassembly 9
2.6 Safety instructions when first putting the unit into service
after completing installation 9
3 General description 10
3.1 Transmitter/receiver interface 10
3.2 Transmission method 10
4 Technical data 12
5 Fitting the radio receiver card 13
6 Function check after installation 15
6.1 Putting the receiver into operation for the first time 15
7 International postal registration 16
EC conformity declaration 17
Programming parameters of the DRC-DR radio receiver
(For authorized personnel only) 19
1 Menu for programming parameters of the radio receiver 20
1.1 Activating the menu 20
1.2 Displaying the current parameters 21
1.3 Changing between display and entry mode 21
1.4 Entry mode 21
1.5 CAN Baud rate 22
1.6 Setting the node-ID of the radio receiver 22
1.7 Switching on and off the CAN heartbeat function 23
1.8 Changing the crane identification 23
1.9 Displaying the serial number of the radio receiver,
Parameter code 005 25
1.10 Displaying the software version of the radio receiver,
Parameter code 006 25
1.11 Displaying the hardware version of the radio receiver,
Parameter code 007 25
1.12 Frequency hopping 25

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1 Foreword
You have purchased a Demag product/system.
These operating instructions are designed to provide the owner with appropriate
instructions for safe and correct operation and to facilitate maintenance.
Every individual given the task of transporting, installing, commissioning, operat-
ing, maintaining and repairing our products and systems must have read and
understood
•the operating instructions
•the safety regulations and
•the safety instructions in the individual chapters and sections.
The operating instructions must be available to the operating personnel at all times
in order to prevent operating errors and to ensure smooth and trouble-free opera-
tion of our products/systems.
These operating instructions must be treated confidentially. They should only be
used by authorized personnel. They may only be entrusted or made available to
third parties with the prior written consent of Demag.
All documents are protected within the sense of copyright law.
No part of this documentation may be reproduced, utilized or transmitted without
specific prior consent. Infringements are an offence resulting in obligatory compen-
satory damages.
All industrial rights reserved.
Our after-sales service will provide you with all technical information on Demag
products and their systematic application.
Should you have any questions regarding our products, please refer to one of our
after-sales service stations, the relevant representative or the manufacturer.
Kindly quote the serial or order number (see test and inspection booklet, load
capacity plate on the crane) in any correspondence or for spare part orders.
Specifying this data ensures that you receive the correct information or the
required spare parts.
1.1 Copyright
1.2 Customer service

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These operating instructions must be read carefully before installing and putting
the system into operation.
We assume no liability for any damage and malfunctions resulting from failure to
comply with the operating instructions.
Any liability claims for defects must be made by quoting the order number immedi-
ately on detecting the defect.
Any liability claims for defects are void in the event of:
•inappropriate use,
•faulty devices or equipment connected or attached to the system which are not
part of our scope of supplies and services,
•use of non-genuine spare parts and accessories,
•refurbishment or modification of the product unless approved in writing by
Demag.
Wearing parts are not subject to liability for defects.
All technical information, data and instructions for operation contained in these
operating instructions were up-to-date on going to print and are compiled on the
basis of our experience and to the best of our knowledge.
We reserve the right to incorporate technical modifications within the scope
of further development of the system which is the subject of these operating
instructions.
Therefore, no claims can be derived from the information, illustrations and
descriptions contained in these operating instructions.
The descriptions and illustrations contained in this documentation do not neces-
sarily correspond to the scope of delivery or any subsequent spare part delivery,
either; the drawings and illustrations are not to scale.
Only documentation belonging to the actual order is valid.
We assume no liability for damage and malfunctions caused as a result of operat-
ing errors, non-compliance with these operating instructions or inappropriate re-
pairs and maintenance.
We expressly point out that only genuine Demag spare parts and accessories ap-
proved by us may be used. Accordingly, this also applies to other manufacturers‘
parts supplied by us.
For safety reasons, the fitting and use of spare parts or accessories which have
not been approved and unauthorized modification and conversion of the product
are not permitted and exempt us from any liability for damages resulting therefrom.
With the exclusion of any further claims, we are liable for any defects or omissions
on our part in the products or documentation supplied within the scope of the liabil-
ity obligations entered into in the original contract. Any further claims, in particular
any and all claims for damages, are excluded with the exception of legal claims in
accordance with product liability legislation.
1.3 Liability for Defects
1.4 Limitations of liability

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1.5 Definitions Owner
Owners (employer, company) are defined as a person who owns such a system
and who uses it appropriately or allows it to be operated by suitable and instructed
persons.
Operating personnel/operator
Operating personnel or operators are defined as persons entrusted by the owner
of the system with the operation of the system.
Specialist personnel
Specialist personnel are defined as persons assigned by the owner of the system
to carry out special tasks such as installation, setting-up, maintenance and fault
elimination.
Qualified electrician
Qualified electricians are defined as persons who, owing to their technical training,
knowledge and experience of electrical installations as well as knowledge of the
relevant standards, codes of practice and regulations, are able to assess the tasks
given to them and to identify and eliminate potential hazards.
Trained person
Trained persons are defined as persons who have been instructed and trained
for the tasks assigned to them and on the possible hazards resulting from incor-
rect handling and who have been informed about the required protective devices,
protective measures, relevant regulations, codes of practice, accident prevention
regulations and operating conditions and who have proven their qualifications.
Experienced technician
Experienced technicians are defined as persons, who, owing to their technical
training and experience, have sufficient knowledge of these systems and are fa-
miliar with the 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 such systems.

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2 Safety instructions
2.1 Symbol description These symbols are used to warn against potential safety hazards or causes of
damage or provide useful information.
Hazard warning
This symbol appears in the operating instructions next to all instructions relating to
safety at work wherever a potential danger to life and limb exists.
Follow these instructions at all times and be particularly vigilant and cautious.
Pass on safety instructions to all persons entrusted with working on the product
including the power supply.
In addition, observe all general safety regulations at all times.
Warning against dangerous electrical voltage
Contact with live parts can result in immediate death. Protective covers (e.g.
covers and enclosures) marked with this sign may only be opened by qualified
electricians. Before opening, all relevant operating, control, feed or other voltages
must be disconnected.
Operating hazard for the installation
This symbol in the operating instructions indicates all warnings which, if not com-
plied with, may result in damage to the product.
The DRC-DR radio receiver is intended to be used as a receiver unit for DRC-10
and DRC-J radio transmitters. The scope of functions is exclusively designed for
wireless remote control of crane installations with Demag DR rope hoists.
Thus for these applications, the cable-connected control equipment (control pen-
dant) can be dispensed with. The operator can position himself as required. He
can freely move loads from a safe distance in line with the local conditions.
DRC-DR radio receivers are exclusively intended for single-transmitter operation;
i.e. there is always a clear assignment to a specific radio transmitter (DRC-10 or
DRC-J).
The transmission method used by Demag is designed for the most robust and
interference-resistant radio transmission between the transmitters and receivers of
the DRC range.
The state-of-the-art transmission method is provided with technical features (e.g.
automatic frequency management, adaptive behaviour) which are intended to en-
sure 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 Demag, it cannot be entirely ex-
cluded that the transmission characteristics of other radio systems are impaired,
in particular devices supplied by other manufacturers that use the same frequency
range, or that the transmission characteristics of the system supplied by Demag
are negatively affected. In such cases, interference or radio connection interrup-
tions may occur, which disrupt the communication and function of a system sup-
plied by Demag or other manufacturers. Such impairment or interference does not
constitute a defect on the part of DRC transmitters and receivers. Demag will only
accept liability for wilful or grossly negligent behaviour on its part.
2.2 Appropriate use

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The number of transmitters that operate without any interference in a given area
depends on the relevant radio solution design of all systems and the selectivity of
each individual system.
If this limit is exceeded continuously or for certain periods, additional technical
measures may be necessary in order to ensure simultaneous and interference-
free operation of the radio systems. Whether and to which extent such measures
are required can only be determined by means of suitable measurements on site
or when the system is put into operation. Demag is not responsible for such addi-
tional technical measures.
Radio remote control systems of the DRC range are exclusively intended for sin-
gle-transmitter operation; i.e. there is always a clear assignment between a spe-
cific transmitter and the corresponding receiver.
Radio remote control systems of the DRC range may only be operated when in
perfect working order by trained personnel in accordance with the relevant safety
and accident prevention regulations. This also includes compliance with operating
and maintenance conditions specified in the operating instructions.
In Germany, the owner of a crane installation with radio control system is responsi-
ble for compliance with accident prevention regulations BGV D6.
For appropriate use, the information in the operating instructions for the receiver
used (DRC-DR/DRC-MP) and the machine/crane installation to be controlled must
be complied with in addition to the information contained in these operating in-
structions (see accompanying documents, page 2).
Serious personal injury or damage to property may occur in the event of:
•unauthorized removal of covers,
•inappropriate use of the product/system,
•incorrect operation,
•insufficient maintenance,
•working on live parts.

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Certain work and practices are prohibited when using the product as they may
involve danger to life and limb and result in lasting damage to the product, e.g.:
•Manipulating electrical equipment
•Connecting the unit to power supply with voltage or frequency other than those
specified on the type plate
•Non-compliance with specified mounting positions
•Non-compliance with the max. permissible operating temperature.
Other inappropriate applications may be caused by non-compliance with the infor-
mation in the operating instructions for the receiver and for the crane installation to
be controlled.
Persons under the influence of drugs, alcohol or medicines which affect reactions
must not install, operate, put into service, maintain, repair or disassemble the
product. Any conversions and modifications to the installation must comply with
the safety requirements. Work on electrical equipment may only be carried out by
specialists in accordance with electrical regulations. In the event of malfunctions,
the product must be shutdown, switched off and the relevant main switches locked
immediately.
Malfunctions must be eliminated immediately.
National accident prevention regulations and codes of practice and general safety
regulations must be observed when operating our products. Important information
and instructions are marked by corresponding symbols. Follow these operating
and safety instructions to avoid personal injury and damage to machinery.
The operating instructions must be kept available at the place where the product is
in use at all times.
They include significant aspects and appropriate excerpts from the relevant guide-
lines, standards and regulations. The owner must instruct his personnel appropri-
ately. If the safety instructions given are not observed in any way, personal injury
or even death can result.
Observe general statutory and other obligatory regulations relating to accident
prevention and environmental protection and basic health and safety requirements
in addition to those included in these operating instructions.
Such requirements may also relate, for example, to the handling of hazardous
materials or the provision/wearing of personal protection equipment.
Comply with these regulations and general accident regulations relevant for the
place at which the product is used and follow the instructions therein when working
with the product.
The product may still constitute a danger to life and limb if it is not installed, oper-
ated, maintained or used appropriately by personnel which have not been trained
or specially instructed.
The safety instructions must, if required, be supplemented by the owner with in-
structions and information (e.g. factory regulations) relating to organization of work,
working procedures, operating personnel, etc. Supervising and reporting obliga-
tions as well as special operating conditions must also be taken into consideration.
Supervising and reporting obligations as well as special operating conditions must
also be taken into consideration.
2.4 Basic information on
safety
2.3 Inappropriate use

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2.5 Safety instructions
for installation and
disassembly
2.6 Safety instructions
when first putting the
unit into service after
completing installation
Personnel assigned to working with the product must have read the operating
instructions and the safety instructions.
All activities relating to the product which are not described in the operating instruc-
tions may only be carried out by specifically trained specialist personnel.
The owner must ensure that personnel work in a safety and hazard-conscious
manner in compliance with the operating instructions.
The owner must ensure that product is only operated when in proper working order
and that all relevant safety requirements and regulations are complied with.
The product must be taken out of service immediately if functional defects or
irregularities are detected.
In the event of a stoppage (e.g. if defects regarding safe and reliable operation are
detected, in emergency situations, in the event of operating malfunctions, for main-
tenance purposes, if damage is detected or after finishing work), the operator/ex-
perienced technician must carry out all prescribed safety measures or observe that
they are automatically carried out.
Personal protective clothing must be worn as necessary or as required by regula-
tions. Personnel must not wear loose clothing, jewellery including rings or long hair
loose. Injury may occur, for example, by being caught or drawn into the mecha-
nism.
All safety and hazard warnings on the product, its access routes and mains con-
nection switches must be preserved completely and in legible condition.
Modifications, additions to and conversions of the product which might impair
safety in any way must not be carried out without the approval of Demag.
Safety devices must not be rendered inoperative.
Only genuine Demag spare parts may be used. Observe prescribed deadlines or
those specified in the operating instructions for routine checks/inspections.
•Installation and disassembly work may only be performed by experienced
technicians.
•Installation and disassembly work must be co-ordinated by the person carrying
out the work and the owner within the scope of their responsibility.
•The assembly zone must be made safe.
•The installation must be isolated in accordance with the relevant electrical
regulations.
•Customer-specific regulations must be observed.
•Only appropriate, tested and calibrated tools may be used.
•The working and/or danger zone must be made safe.
•The commands for controlling the motion drives are disabled in the DRC-DR
radio receiver until a radio transmitter has been clearly assigned and specified
by means of the relevant initialisation dialogues and the crane ID. See radio
transmitter operating instructions (DRC-10 or DRC-J).
•In the course of putting the product into service, it may be necessary to render
safety devices or features inoperative when carrying out adjustments or function
checks.
•When putting the machine into service, it may be necessary to perform work in
the danger zone, therefore, it must be ensured that only appropriately trained
personnel are employed for this work.

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The DRC-DR radio receiver can either be used with a DRC-10 hand-held transmit-
ter or with a DRC-J joystick control system.
3 General description
The DRC-DR radio receiver is designed as plug-in PCB that can be fitted in the
electrical equipment cover of the DR rope hoist. The radio receiver communicates
with the electrical equipment of the rope hoist via a CAN interface. For use of the
DRC-DR radio receiver, the DR rope hoist must be provided with a Demag rope
hoist control system.
Radio remote control systems of the DRC range are exclusively intended for
single-transmitter operation; i.e. there is always a clear assignment between a
specific transmitter and its corresponding radio receiver.
The so-called ISM band (433 MHz) is used for transmitting the radio signals
between transmitter and receiver. Witin the ISM band 30 frequencies are used
alternately in a defined sequence (so-called frequency hopping). A random-check
generator detemines the sequence of the frequencies when radio transmission is
started. In order to increase transmission reliability, the information is transmitted
several times. This method in connection with frequency hopping provides for a
very high immunity to interference.
Frequency hopping is used for the first time with Demag DRC radio control system
types D1-FH and D2. In the case of the D1 type, the frequency of the radio signal
is not changed during a transmission cycle.
A decisive advantage of the frequency hopping transmission is that existing in-
formation contents are transmitted on several physical channels. This redundant
radio transmission 1) provides for an exceptionally high insensitivity of radio
transmission against other transmitters or electromagnetic interference.
Radio receiver
DRC-DR
Hand-held transmitter
DRC-10
Joystick control system
DRC J
3.1 Transmitter/receiver
interface
3.2 Transmission method
1) Certain information contents are transmitted on up to 5 different frequencies. Only if (theoretically) all
frequencies used were occupied or disturbed by other radio systems, communication would be inter-
rupted.

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3.2.1 Downwards compatibility of
DRC-10 D2 transmitters
For combining DRC-10 D2 transmitters with D1 type receivers
DRC-DR, part no. 719,441 45
DRC-MP, part no. 773 432 44
these transmitters must be programmed for operation at a fixed frequency (chapter
„Programming parameters of the DRC-10 handheld transmitter“, section 1.6).
The table below shows an overview of the possible combinations
3.2.2 Compatibility
D1, D1 FH and D2
Design
Product
Part no.:
Receiver
D1
DRC-MP
773 432 44
D1
DRC-DR
719 441 45
D1 FH
DRC-Mp
773 584 44
D1 FH
DRC-DR
719 436 45
D2
DRC-DR
719 439 45
Transmitter
D1 DRC-10
773 431 44 OK OK not compatible
not
compatible
not
compatible
D1 DRC-J
773 460 44 OK OK not compatible
not
compatible
not
compatible
D1 FH DRC-10
773 581 44
Fixed
frequency
Fixed
frequency OK OK OK
D1 FH DRC-J
773 583 44
Fixed
frequency
Fixed
frequency OK OK OK
D2 DRC-10
773 591 44
Fixed
frequency
Fixed
frequency OK OK OK
Explanation:
D1 without frequency hopping
D1 FH with frequency hopping
D2 with frequency hopping and, if required, with extended functions
Transmitters and receiver with frequency hopping can be identified by the part no.
on the rating plate.
Additionally transmitters with frequency hopping have a different symbol for the
signal strength in the display.
3.2.3 Frequency hopping feature
Transmitter without frequency hopping Transmitter with frequency hopping
NOID ???
NOID
42718244.eps
42718344.eps

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Output CAN bus
LED indicators for Power on
Radio transmitter/receiverl (HF) available
Data telegrams decoded without error
Type of enclosure IP 55 integrated in rope hoist controls
Ambient temperature – 20° to + 70° C.
Weight of radio receiver 60 g
Supply voltage +5 V DC (from the rope hoist controls)
4 Technical data
DRC-DR radio receiver/PCB

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5 Fitting the radio receiver card
To install the radio receiver card, proceed as follows:
•Before starting any installation work, disconnect system from the power supply.
•Install the radio receiver card in the appropriate slot
•Fix the radio receiver card in the electrical equipment cover by means of the two
screws
Slide the radio receiver card into the
appropriate slot
42354344.eps
42354444.eps
42354544.eps

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•Connecting the flat cable from the radio receiver to the controller card of the
rope hoist control system
•With the above steps, installation of the radio receiver card has been complet-
ed. Before the system is put into operation again, make sure that other control
components such as, for example, the DSE-8R or DSE-10R control pendant
with cable, have been disconnected from the system. Otherwise, no clear as-
signment of the control units is possible.
42354644.eps
42354844.eps
42354744.eps

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6 Function check after installation
A general function check of the radio receiver is possible by means of the light
diodes on the radio receiver card.
•The yellow LED flashes, when the receiver is supplied with current and no
DRC-10 hand-held transmitter or DRC-J joystick control system has been
assigned yet. In addition, a red LED flashes, when radio telegrams of DRC-10
or DRC-J radio transmitters that have not been assigned are received.
•The green LED flashes, when the receiver is supplied with current and radio
telegrams of an assigned DRC-10 or DRC-J radio transmitter are received.
When the DRC-10 or DRC-J radio transmitter is in Stop mode, the flashing
sequence is approx. 5/sec.
When the DRC-10 or DRC-J radio transmitter is in Run mode, the flashing
sequence changes to rapid 10/sec.Further function checks are only possible
by operation of a corresponding radio transmitter (DRC -10 or DRC J). For this
purpose, please use the relevant operating instructions of the respective DRC-10
or DRC-J radio transmitter and of the crane installation (see accompanying
documents, page 2).
You will also find relevant instructions for eliminating possible faults of a radio con-
trol system in the operating instructions of the DRC-10 or DRC-J radio transmitter
and the crane installation.
When delivered, the DRC-DR radio receiver has crane identification “NOID”.
All crane movements are blocked. This block is removed when the unit is put into
operation by a valid crane identification (other than NOID) being assigned to the
receiver.
The radio receiver can be put into operation by means of the relevant radio trans-
mitter (DCR-10 or DRC-J). The procedure for putting the radio remote control
system into operation is described in detail in the operating instructions of the
transmitter.
Operating instructions required in addition:
Radio transmitter Part no.
DRC-10 hand-held transmitter 214 920 44
DRC-J transmitter operating instructions 214 975 44.
6.1 Putting the receiver
into operation for the
first time

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7 International postal registration
Countries Frequency range
Australia 433-MHz ISM band
Belgium 433-MHz ISM band
Denmark 433-MHz ISM band
UK 433-MHz ISM band
Estonia 433-MHz ISM band
Finland 433-MHz ISM band
France 433-MHz ISM band
Greece 433-MHz ISM band
Holland 433-MHz ISM band
Ireland 433-MHz ISM band
Iceland 433-MHz ISM band
Italy 433-MHz ISM band
Croatia 433-MHz ISM band
Norway 433-MHz ISM band
New Zeeland 433-MHz ISM band
Poland 433-MHz ISM band
Portugal 433-MHz ISM band
Switzerland 433-MHz ISM band
Slovakia 433-MHz ISM band
Slovania 433-MHz ISM band
Spain 433-MHz ISM band
Sweden 433-MHz ISM band
Czech Republic 433-MHz ISM band
Germany 433-MHz ISM band
Hungary 433-MHz ISM band
Austria 433-MHz ISM band
In the following countries, transmitters and radio receivers of the DRC-10 D2 range
in the standard delivery form (part no.: 773 591 44) can be operated without any
registration or operating fee:
On request, the relevant approvals and/or certificates are available.
Operation in the following countries requires special approvals (e.g. import license)
Russia, Singapore, South Africa, Corea
Please contact the manufacturer, if use of the product is planned in the countries
mentioned above.

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# = Modifications compared
to previous issue
Class. no.
715 IS 975
205 330 44
Normung DCC
ppa. Gersemsky ppa. Hoffmann
Technik Handling Technology BU Handling Technology
Page 11 page(s)
EN
Issue 0107
Ident. no.
EC conformity declaration
Demag radio control system
in accordance with EC directive 89/336/EEC, Appendix I, 73/23/EEC,
Appendix III and 99/5/EC
Reproduction in whole or in part only with prior consent of Demag Cranes & Components GmbH, D-58286 Wetter Subject to change. Not liable for errors or omissions.
#
1) 1) Application of CE symbol in accordance with EC Low Voltage Directive 2006/95/EC:
RC-10 1998; RC-J 2000; DRC-10 2004; DRC-J 2004; DRC MP 2005; DRC-DR 2005; DRC-DC 2006.
#
#
#
#
Hereby we,
Demag Cranes & Components GmbH
declare that the product
Demag radio control system RC-10, RC-J,
DRC-10, DRC-J,
DRC-MP, DRC-DR, DRC-DC 1)
of serial design is in conformity with the provisions of following relevant regulations:
EC EMC directive 89/336/EEC
amended by 92/31/EEC and 93/68/EEC
EC Low voltage Directive 2006/95/EC
EC radio and TTE directive 99/ 5/EG
Applied harmonised standards:
EN 954-1 Safety related parts of control systems
EN 13557 Control elements and control positions
EN 50178 Electronic equipment for use in electrical power
installations and their assembly into electrical power
installations
EN 60204-32 Electrical equipment, requirements for hoists
EN 60529 Types of enclosure (IP code)
EN 61000-6-2 Electromagnetic compatibility – Immunity for industrial
environments
EN 61000-6-4 Electromagnetic compatibility – Emission standard for
industrial environments
EN 300220-3 Electromagnetic compatibility and Radio spectrum
Matters (ERM); Short Range Devices (SRD)
Wetter, 16 January 2007
Place and date of issue

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Operating instructions
Programming parameters of DRC-DR radio receiver
(For authorized personnel only)

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The radio receiver parameter programming menu is used by specially trained
personnel for programming parameters of the radio control system. The following
information of the radio control system can be displayed and four of the settings
can be changed using this menu:
Code Information
001 Transmission speed (Baud rate) of the radio receiver on the CAN
bus
002 Node-ID of the radio receiver
003 Switching on and off the CAN heartbeat function
004 Entry of the crane identification
005 Display of the serial number of the radio receiver
006 Display of the software version of the radio receiver
007 Display of the hardware version of the radio receiver
Note:
Parameters 001 to 003 only refer to radio receivers with CAN interface and are
only effective for these. Parameters 001 to 003 are set in the factory and must not
be changed without prior agreement.
Attention: Changes to the parameters of the radio receiver may impair functioning
of the hoist unit.
DRC-10:
•Actuate and hold down the Stop key
•Actuate the Lower key
•Actuate the Right key twice
•Actuate the Lower key again and hold it down for approx. 5 seconds
•Release the Lower key again
•Release the Stop key
DRC-J:
•Lock the Stop key
•Actuate display key ↓
•Actuate display key ↓twice
•Actuate display key ↓again and hold it down for approx. 5 seconds
•Release display key ↓again
Every change to the „Radio control parameter programming“ menu is signalled to
the crane control system.
1 Menu for programming parameters of the radio receiver
1.1 Activating the menu