Optimum drill DX 17E User manual

EN
Operating Manual
Version 1.0
Bench drill
Part no. 3020168

Version 1.0 - 2020-09-042 Translation of original instructions
DX17E
EN
DX17E_GBIVZ.fm
Table of contents
1 Safety
1.1 Rating plate.................................................................................................................................................... 4
1.2 Safety instructions (warning notes)................................................................................................................ 5
1.3 Intended use.................................................................................................................................................. 6
1.4 Reasonably foreseeable misuse.................................................................................................................... 7
1.5 Possible dangers caused by the drilling machine.......................................................................................... 8
1.6 Qualification of personnel.............................................................................................................................. 9
1.7 User positions................................................................................................................................................ 9
1.8 Safety devices ............................................................................................................................................... 9
1.9 Emergency stop button................................................................................................................................ 10
1.10 Master switch............................................................................................................................................... 10
1.11 Drilling table................................................................................................................................................. 10
1.12 Personal protective equipment.................................................................................................................... 10
1.13 Safety during operation................................................................................................................................ 11
1.14 Safety during maintenance.......................................................................................................................... 11
1.15 Disconnecting and securing the drilling machine......................................................................................... 11
1.16 Mechanical maintenance............................................................................................................................. 11
1.17 Electronics................................................................................................................................................... 11
2 Technical specification
2.1 Dimensions.................................................................................................................................................. 13
3 Delivery, interdepartmental transport and unpacking
3.1 Notes on transport, installation and unpacking............................................................................................ 14
3.2 Unpacking the machine............................................................................................................................... 15
3.3 Transport ..................................................................................................................................................... 15
3.4 Anchoring the Drill ....................................................................................................................................... 15
3.5 Installation site requirements....................................................................................................................... 16
3.6 Cleaning of the machine.............................................................................................................................. 17
3.7 First commissioning..................................................................................................................................... 17
3.8 Warming up the machine............................................................................................................................. 17
3.9 Electrical connection.................................................................................................................................... 18
4Operation
4.1 Control and indicating elements .................................................................................................................. 21
4.2 Drill chuck guard.......................................................................................................................................... 22
4.3 Control panel ............................................................................................................................................... 22
4.4 Removing the drill chuck from the MT2 spindle holding fixture ................................................................... 23
4.5 Adjustment of the mechanical drilling depth................................................................................................ 23
4.6 Inspection and maintenance........................................................................................................................ 24
5 Ersatzteile - Spare parts
5.1 Ersatzteilbestellung - Ordering spare parts ................................................................................................. 25
5.2 Hotline Ersatzteile - Spare parts Hotline...................................................................................................... 25
5.3 Service Hotline............................................................................................................................................. 25
5.4 Bohrkopf - Drilling head - Spindelaufnahme MK2 - Spindle seat MT2 ........................................................ 27
5.5 Säule und Bohrtisch - Column and drilling table.......................................................................................... 28
5.6 Schaltplan - Wiring diagram......................................................................................................................... 29
5.7 Ersatzteilliste - Spare parts list .................................................................................................................... 30
6 Appendix
6.1 Copyright ..................................................................................................................................................... 32
6.2 Terminology/Glossary.................................................................................................................................. 32
6.3 Liability claims/warranty............................................................................................................................... 32
6.4 Storage........................................................................................................................................................ 33
6.5 Advice for disposal / Options of reuse:........................................................................................................ 34
6.6 Disposal via municipal collection facilities ................................................................................................... 35
6.7 Product follow-up......................................................................................................................................... 35

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_preface_GB.fm
Preface
Dear customer,
Thank you very much for purchasing a product made by OPTIMUM.
OPTIMUM metal working machines offer a maximum of quality, technically optimum solutions and convince
by an outstanding price performance ratio. Continuous enhancements and product innovations guarantee
state-of-the-art products and safety at any time.
Before commissioning the machine please thoroughly read these operating instructions and get familiar with
the machine. Please also make sure that all persons operating the machine have read and understood the
operating instructions beforehand.
Keep these operating instructions in a safe place nearby the machine.
Information
The operating instructions include indications for safety-relevant and proper installation, operation and main-
tenance of the machine. The continuous observance of all notes included in this manual guarantee the safety
of persons and of the machine.
The manual determines the intended use of the machine and includes all necessary information for its eco-
nomic operation as well as its long service life.
In the paragraph "Maintenance" all maintenance works and functional tests are described which the operator
must perform in regular intervals.
The illustration and information included in the present manual can possibly deviate from the current state of
construction of your machine. Being the manufacturer we are continuously seeking for improvements and
renewal of the products. Therefore, changes might be performed without prior notice. The illustrations of the
machine may be different from the illustrations in these instructions with regard to a few details. However,
this does not have any influence on the operability of the machine.
Therefore, no claims may be derived from the indications and descriptions. Changes and errors are reserved
!
Your suggestion with regard to these operating instructions are an important contribution to optimising our
work which we offer to our customers. For any questions or suggestions for improvement, please do not hesi-
tate to contact our service department.
If you have any further questions after reading these operating instructions and you are not able to
solve your problem with a help of these operating instructions, please contact your specialised
dealer or directly the company OPTIMUM.
Optimum Maschinen Germany GmbH
Dr. Robert-Pfleger-Str. 26
D-96103 Hallstadt
Fax (+49)0951 / 96555 - 888
Email: [e-mail]
Internet: www.optimum-machines.com

Safety
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1 Safety
Glossary of symbols
This part of the operating instructions
explains the meaning and use of the warning notes included in these operating instructions,
defines the intended use of the drilling machine,
points out the dangers that might arise for you or others if these instructions are not
observed,
informs you about how to avoid dangers.
In addition to these operating instructions, please observe
the applicable laws and regulations,
the statutory provisions for accident prevention,
the prohibition, warning and mandatory signs as well as the warning notes on the drilling
machine.
Always keep this documentation close to the drilling machine.
1.1 Rating plate
INFORMATION
If you are unable to rectify an issue using these operating instructions, please contact us for
advice:
Optimum Maschinen Germany GmbH
Dr.-Robert-Pfleger-Str. 26
D-96103 Hallstadt
email: [e-mail]
provides further instructions
calls on you to act
listings
1 kW
230 V ~50Hz
73 kg
NO
Optimum Maschinen
Germany GmbH
Dr.-Robert-Pfleger-Str. 26
D-96103 Hallstadt
Germany
3020168
Year
4.000 min-1
NO
EN Bench drilling machine
FR Perceuse modèle établi
ES Taladro de sobremesa
IT Trapani da banco
CS Stolní vrtaþky
DA Table boremaskine
EL ǻȇǹȆǹȃȅȆǹīȀȅȊ
FI Penkkiporakone
HU Asztali fúrógép
NL Boormachine tafelmodel
PL Wiertarka
PT Engenho de Furarde Bancada
RO Masina de gaurit
RU Станок сверлильный настольный
SK Namizni vrtalni stroj
SV Bänkborrmaskin
TR Sütunlu Matkap
DX 17E

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1.2 Safety instructions (warning notes)
1.2.1 Classification of hazards
We classify the safety warnings into different categories. The table below gives an overview of
the classification of symbols (ideogram) and the warning signs for each specific danger and its
(possible) consequences.
1.2.2 Other pictograms
Symbol Alarm expression Definition / consequence
DANGER! Impending danger that will cause serious injury or death to people.
WARNING! A danger that can cause serious injury or death.
CAUTION!
A danger or unsafe procedure that can cause personal injury or damage
to property.
ATTENTION!
Situation that could cause damage to the drilling machine and product,
as well as other types of damage.
No risk of injury to persons.
Information
Practical tips and other important or useful information and notes.
No dangerous or harmful consequences for people or objects.
In case of specific dangers, we replace the pictogram with
general danger with a warning of injury to hands, hazardous
electrical voltage,
or
rotating parts.
Warning: danger of
slipping! Warning: risk of stumbling! Warning: hot surface! Warning: biological hazard!
Warning: automatic start-
up! Warning: tilting danger! Warning: suspended loads! Caution, danger of
explosive substances!

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1.3 Intended use
WARNING!
In the event of improper use of the drilling machine
will endanger personnel,
will endanger the machine and other material property of the operating company,
the correct function of the drilling machine may be affected.
The drilling machine is designed and manufactured to be used in a non-explosive environment.
The drilling machine is designed and manufactured for holes in cold metals or other non flam-
mable materials or that not constitute a health hazard using a rotating filing-stripping tool that
has a number of grooves for collecting the filings.
If the drilling machine is used in any way other than described above, modified without authori-
zation of Optimum Maschinen Germany GmbH, then the geared drill is being used improperly.
We will not be held liable for any damages resulting from any operation which is not in accord-
ance with the intended use.
We expressly point out that the guarantee will expire, if any constructive, technical or proce-
dural changes are not performed by the company Optimum Maschinen Germany GmbH.
It is also part of the intended use that you
observe the limits of the drilling machine,
observe the operating instructions,
the inspection and maintenance instructions are observed.
 Technical specification on page 12
WARNING!
Extremely severe injuries.
It is forbidden to make any modifications or alternations to the operation values of the
drilling machine! They could endanger the personnel and cause damage to the drilling
machine.
INFORMATION
The control and drive components of the bench drill are approved for industrial and commercial
use in industrial supply networks. In these areas, it may be difficult to guarantee electromag-
netic compatibility due to conducted and emitted interference.
Switching on forbidden! Use ear protection! Read the operating
instructions before
commissioning!
Pull out the mains plug!
Wear protective glasses! Wear protective gloves! Wear safety shoes! Wear a protective suit!

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WARNING!
The bench drill is not intended for use in residential buildings, in which the power
supply is provided via a public low voltage supply system. In these areas, it may be
difficult to guarantee electromagnetic compatibility due to conducted and emitted
interference.
1.4 Reasonably foreseeable misuse
Any use other than that specified under "Intended use" or any use beyond that described will be
deemed non-intended use and is not permissible.
Any other use has to be discussed with the manufacturer.
It is only allowed to process metal, cold and non-inflammable materials with the drilling
machine.
In order to avoid misuse, it is necessary to read and understand the operating instructions
before first commissioning.
Operators must be qualified.
1.4.1 Avoiding misuse
Use of suitable cutting tools.
Adapting the speed setting and feed to the material and workpiece.
Clamp workpieces firmly and free of vibration.
WARNING!
Risk of injury caused by flying workpieces. The workpiece is always to be fixed by a
machine vice, jaw chuck or by another appropriate clamping tool such as for the
clamping claws.
Clamp the workpiece in the machine vice. Make sure that the workpiece is firmly clamped in the
machine vice and that the machine vice is firmly clamped onto the machine table.
Use cooling and lubricating agents to increase the durability of the tool and to improve the
surface quality.
Clamp the cutting tools and workpieces on clean clamping surfaces.
When drilling, make sure that
the suitable speed is set depending on the diameter of the drill,
the pressure must only be such that the drill can cut without load,
if there is too much pressure, the drill will wear quickly and may even break or jam in the
borehole. If the drill jams, immediately stop the main motor by pressing the emergency stop
switch,
use commercial cooling/lubricating agents for hard materials, e.g. steel and
generally always back the spindle out of the workpiece while it is still turning.
INFORMATION
The drilling machines with frequency converter for regulating the speed is built according to the
standard EN 61800-3 class C2.
WARNING!
The machine is not intended for use in residential buildings, in which the power supply
is provided via a public low voltage supply system. In these areas, it may be difficult to
guarantee electromagnetic compatibility due to conducted and emitted interference.
Overview of the EMC categories:
Categorie C1

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required limit values Class B Group 1 according to EN 55011
Categorie C2
Required limit values class A Group 1 according to EN 55011, Installation by EMC
expertsand warning: “This is a product of category C2 according to EN 61800-3. This prod-
uct may cause radio interference in a residential area. In this case, it may be necessary for
the operator to take appropriate action.“
Categorie C3
Required limit values class A group 2 according to EN 55011, whereby these limit values
are below those of class A group 1, plus warning: “This type is not suitable for connection to
a public low-voltage network supplying residential buildings. When connecting to a public
low voltage network, radio frequency interference is expected.“
1.5 Possible dangers caused by the drilling machine
The drilling machine was built using state-of-the-art technology.
Nevertheless, there is a residual risk as the drilling machine operates with
at high speeds,
rotating parts,
electrical voltage and currents.
We have used design and safety engineering to minimize the health risk to personnel resulting
from these hazards.
If the drilling machine is used and maintained by personnel who are not duly qualified, there
may be a risk resulting from incorrect or unsuitable maintenance of the geared drill.
INFORMATION
Everyone involved in the assembly, commissioning, operation and maintenance must
be duly qualified
and strictly follow these operating instructions.
In the event of improper use
there may be a risk to personnel,
there may be a risk to the machine and other material values,
the correct function of the drilling machine may be affected.
Always disconnect the drilling machine if cleaning or maintenance work is being carried out, or
is no longer in use.
WARNING!
The drilling machine may only be operated with functional safety devices.
Disconnect the drilling machine immediately, whenever you detect a failure in the safety
devices or when they are not fitted!
This machine
Categorie C1 C2 C3 C4
Environment Residential area Business area
Industrial area Industrial area
Voltage / Current < 1000 V > 1000 V
EMC knowledge no requirement Installation and commissioning by an EMC expert

Safety
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All additional devices installed by the operator must be equipped with the stipulated
safety devices.
This is your responsibility being the operating company!  Safety devices on page 9
1.6 Qualification of personnel
1.6.1 Target group
This manual is addressed to
the operating companies,
the operators,
the maintenance personnel.
Therefore, the warning notes refer to both, operation and maintenance personnel of the drilling
machine.
Lock the main switch. This will prevent it from being used by unauthorized persons.
Obligations of the operating company
train the personnel,
instruct the personnel in regular intervals (at least once a year) on
- all safety regulations relevant to the machine,
- its operation and
- generally accepted engineering standards.
check the personnel‘s knowledge level,
document the training/instruction,
have attendance at the training/instruction confirmed by signature and
check whether the personnel is working in a safety and risk-conscious manner and follow-
ing the operating instructions.
define and document the inspection deadlines for the machine in accordance with § 3 of the
Factory Safety Act and perform an operational risk analysis in accordance with § 6 of the
Work Safety Act.
Obligations of the operator
have obtained a training regarding the handling of the drilling machine,
know the function and mode of action,
before taking the machine in operation
- have read and understood the operating manual,
- be familiar with all safety devices and instructions.
Additional requirements apply for work on the following machine components:
Electrical parts or operating agents: shall only be performed by an electrician or under the
guidance and supervision of an electrician.
1.7 User positions
The operator position is in front of the drilling machine.
1.8 Safety devices
Use the drilling machine only with properly functioning safety devices. Stop the drilling machine
immediately, if a safety device fails or is faulty or becomes ineffective. It is your responsibility!
If a safety device has been activated or has failed, the drilling machine must only be used if you
the cause of the fault has been eliminated,
you have verified that there is no danger to personnel or objects.

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1.9 Emergency stop button
CAUTION!
The drilling spindle keeps turning for a short time even after actuating the emergency
stop push button depending on the preset speed.
1.10 Master switch
WARNING!
Dangerous voltage even if the main switch is switched off.
The areas marked by the pictogram might contain live parts, even if the master switch is
switched off.
In the "0" position, the main switch can be secured against accidental or non-authorised switch-
ing on. The power supply is cut off when the master switch is in the off position.
1.11 Drilling table
Seats for T-slots are attached to the clamping table.
WARNING!
Risk of injury due to workpieces flying off at high speed. Securely fix the workpiece on
the drilling table.
1.12 Personal protective equipment
For some works you need personnel protective equipment as protective equipment. These are
safety helmet,
protective glasses or face guard,
protective gloves,
safety shoes with steel toe caps,
ear protection.
Before starting work make sure that the required personnel protective equipment is available at
the work place.
CAUTION!
Soiled personal protection equipment that may be contaminated may cause illness.
Clean your personal protective equipment
after each use,
regularly once a week.
Personal protective equipment for special works
Protect your face and your eyes: Wear a safety helmet with facial protection when performing
work where your face and eyes are exposed to hazards.
Wear protective gloves when handling pieces with sharp edges.
Wear safety shoes when you assemble, disassemble or transport heavy components.

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1.13 Safety during operation
WARNING!
Before switching on the drilling machine make sure that there are
no dangers generated for persons,
no objects are damaged.
Avoid any unsafe work methods:
Make sure that your operation does not create a safety hazard.
The rules specified in these operating instructions must be observed during assembly,
operation, maintenance and repair.
Do not work on the drilling machine if your concentration is reduced, for example, because
you are taking medication.
Observe the accident prevention regulations issued by your Employers Liability Insurance
Association or other supervisory authorities applicable to your company.
Inform the supervisor about all hazards or faults.
Stay on the drilling machine until the machine completely stopped moving.
Use the specified personal protective equipment. Ensure you wear close-fitting clothing
and, if necessary, a hairnet.
Do not use protective gloves when drilling.
1.14 Safety during maintenance
Inform the operators in good time of any maintenance and repair works.
Report all safety relevant changes and performance details of the drilling machine or their oper-
ational behavior. Any changes must be documented, the operating instructions updated and
machine operators instructed accordingly.
1.15 Disconnecting and securing the drilling machine
Switch off the drill with the main switch and lock it so it cannot be activated by unauthorised per-
sonnel or switched on by accident.
The main switch can be locked by removing the shift lever.
All machine parts as well as all dangerous voltages are switched off. Excepted are only the
positions which are marked with the adjoining pictogram.
1.16 Mechanical maintenance
Reinstall all protection and safety devices after any maintenance work once the work has been
completed.This includes:
covers,
safety instructions and warning signs,
grounding cables.
Check if they are working properly!
1.17 Electronics
Have the machine and/or the electric equipment checked regularly. Immediately eliminate all
defects such as loose connections, defective wires, etc.
Specify the inspection intervals for the machine in accordance with § 3 of the Industrial Safety
Regulation, document these and carry out an operational hazard analysis in accordance with §
6 of the Industrial Safety and Health Act.  Electrical connection on page 18

Technical specification
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2 Technical specification
The following information represents the dimensions and indications of weight and the manu-
facturer‘s approved machine data for following stated machines.
CAUTION!
The machine operator should use hearing protection.
INFORMATION
This numerical value was measured on a new machine under the operating conditions specified
by the manufacturer. The noise behaviour of the machine might change depending on the age
and wear of the machine. Furthermore, the noise emission also depends on production engi-
neering factors, e.g. speed, material and clamping conditions.
Electrical connection
230 V / 1 Ph ~50 Hz
Setting the basic frequency to 60Hz, see Sinamics V20 operating instructions
Drive motor power
1 kW
Drilling capacity
Drilling capacity in steel (S235JR) Ø 16 mm
Continuous drilling capacity in steel
(S235JR) Ø 13 mm
Spindle seat
MT2
Spindle stroke
60 mm
Dimensions
 Dimensions on page 12
Machine weight
73 kg
Spindle speeds
infinitely variable 50 - 4000 min-1
Emissions
Maximum sound pressure level at 1 m
distance from the machine and 1.60 m
above the ground.
72 dB(A) on no load running
Ambient conditions Temperature
Temperature 5 ~ 35 °C
Relative humidity 25 - 80%

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2.1 Dimensions
A-A B-B
AA
BB
910
120
50
P
16
100
14 24
100
10 18
475
235
60P
425
280
290
290
290
235
481
385
70-31570

Delivery, interdepartmental transport and unpacking
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3 Delivery, interdepartmental transport and unpacking
CAUTION!
Injuries caused by parts falling over or off a forklift, pallet truck or transport vehicle. Only
use means of transport that can carry the total weight and are suitable for it.
3.1 Notes on transport, installation and unpacking
Improper transport of individual devices and minor machines, unsecured devices and minor
machines stacked on top of each other or next to each other in packed or already unpacked
condition is accident-prone and can cause damage or malfunctions for which we do not grant
any liability or guarantee.
Transport the scope of delivery secured against shifting or tilting with a sufficiently dimen-
sioned industrial truck to the installation site.
3.1.1 General risks during internal transport
CAUTION: DANGER OF TIPPING!
The device may be lifted unsecured by a maximum of 2cm.
Employees must be outside the danger zone, the reach of loads. Warn employees and, if
necessary, advise employees of the hazard.
Act responsibly during transport and always consider the consequences. Refrain from daring
and risky actions.
Gradients and descents (e.g. driveways, ramps and the like) are particularly dangerous. If such
passages are unavoidable, special caution is required.
Before starting the transport check the transport route for possible danger points, unevenness
and disturbances as well as for sufficient strength and load capacity.
Danger points, unevenness and disturbance points must be inspected before transport. The
removal of danger spots, disturbances and unevenness at the time of transport by other
employees leads to considerable dangers.
Careful planning of internal transport is therefore essential.

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3.2 Unpacking the machine
Transport the drilling machine in its packing crate near its final installation location with a lift
truck before unpacking it. If the packaging shows signs of possible transport damage, take the
necessary precautions not to damage the machine when unpacking it. If any damage is discov-
ered, the carrier and/or shipper must be notified immediately to be able to initiate the neces-
sary steps for a claim.
Inspect the machine completely and carefully, making sure that all materials, such as shipping
documents, manuals and accessories supplied with the machine have been received.
3.3 Transport
The machine can be transported with forklifts or lift trucks. The commonly accepted and local
regulations regarding machine transport apply.
WARNING!
Severe or fatal injuries may occur if parts of the machine tumble or fall down from the
forklift truck or from the transport vehicle. Follow the instructions and information on the
transport box. Note the total weight of the drilling machine. Use only transport and load
suspension devices that can support the total weight of the drilling machine.
WARNING!
The use of unstable lifting and load suspension equipment that might break under load
can cause severe injuries or even death. Check that the lifting and load suspension gear
has sufficient load capacity and that it is in perfect condition. Fasten the loads properly.
Never walk under suspended loads!
3.4 Anchoring the Drill
DANGER!
Danger of crushing and overturning. The drilling machine must be installed by several
people.
Weight 73 kg
Check that the drilling machine foundation is horizontal with a spirit level.
Check that the foundation has sufficient load-bearing capacity and rigidity.
Anchor the machine base or the optional machine base onto the floor before positioning the
machine on it.
3.4.1 Centre of Gravity with an Optional Machine Base
CAUTION!
In order to provide the necessary stability of the machine, the machine must be
connected securely to its base. The machine base itself must be fastened firmly to the
floor.

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Img.3-1: Example with Machine Base 335 3000
3.5 Installation site requirements
Organize the work area around the drill according to local safety regulations. The work area for
operation, maintenance and repair must not be restrictive.
INFORMATION
In order to attain good functionality and a high processing accuracy as well as a long service life
of the machine, the place of installation should fulfil certain criteria.
Schwerpunkt - Centre of gravity
(257)
850
(1107)
120
50
P
16
100
14 24
280
290
2 x fastening bore

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Please observe the following points:
The machine must only be installed and operated in a dry and well-ventilated place.
Avoid places near machines generating chips or dust.
The installation site must be free from vibrations also at a distance of presses, planing
machines, etc.
The substructure must be suitable for the drilling machine. Ensure that the floor has suffi-
cient load bearing capacity and is level.
The ground must be prepared in a way that potential coolants cannot penetrate the floor.
Any parts sticking out such as stops, handles, etc. have to be secured by measures taken
by the customer if necessary in order to avoid endangering persons.
Provide sufficient space for the personnel preparing and operating the machine and trans-
porting the material.
Also make sure the machine is accessible for setting and maintenance works.
3.6 Cleaning of the machine
CAUTION!
Do not use compressed air to clean the machine.
Your new drill must be completely cleaned after it is unpacked to ensure that all moving parts
and sliding surfaces are not damaged when the machine is operated. Each unit leaves the fac-
tory with all exposed parts and sliding surfaces suitably greased to avoid oxidation during the
time that elapses before it is placed into operation. Wipe all metallic surfaces with a clean cot-
ton cloth. Clean the plastic parts with cleaning agents suitable for plastic.
3.7 First commissioning
WARNING!
First commissioning may only take place after proper installation.
There is a danger to persons and equipment, if the first commissioning of the drilling
machine is carried out by inexperienced personnel. We do not accept any liability for
damages caused by incorrectly performed commissioning.
3.8 Warming up the machine
ATTENTION!
If the drilling machine and in particular the drilling spindle is immediately operated at
maximum load when it is cold it may result in damages.
INFORMATION
To ensure a long service life of your drilling machine, we recommend that you do not exceed a
maximum rotation speed of 500 rpm during the first hour of operation. If the machine is cold,
e.g. directly after having transported the machine, it should be warmed up at a spindle speed of
only 500 1/min for the first 30 minutes.

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3.9 Electrical connection
The machine is installed and ready to operate. Please verify if the type of current, voltage and
protection fuse correspond to the values specified. A protective earth ground wire connection
must be available. Main Fuse 16A. Due to the design, the leakage current is greater than 3,5
mA. We ask for due attention while executing machine tests within the framework of industrial
safety guidelines.
The earth leakage current of the SINAMICS V20 inverter may exceed 3.5 mA AC. Due to this, a
fixed earth connection is required and the minimum size of the protective earth conductor shall
comply with the local safety regulations for high leakage current equipment.
The SINAMICS V20 inverter has been designed to be protected by fuses; however, as the
inverter can cause a DC current in the protective earthing conductor, if a Residual Current
Device (RCD) is to be used upstream in the supply, observe the following:
The SINAMICS V20 single phase AC 230 V inverters (filtered or unfiltered) can be oper-
ated on a type A1) 30 mA or type B(k) 30 mA RCD.
To use a type A RCD, the regulations in this FAQ must be followed: Siemens Web site
(http://support.automation.siemens.com/WW/view/en/49232264)
ATTENTION!
Residual currents may already be present at your mains connection, or in the later course of
time further residual currents from other devices may be added, which will then cause the
residual current circuit breaker in conjunction with the SINAMICS V20 to trip. The 30mA
residual current circuit breaker possibly used at your mains connection is then no longer
sufficient or is already insufficient when the machine is installed.
In this case it is only possible to use an RCD with 300mA at your mains connection. Whether
then the RCD for personal protection with 30mA may be used against a 300mA RCD for fire
protection alone, must be clarified by you with your network supplier, or your building insurance,
or one of your electricians on site.
Basically, 30mA RCDs are to be found on a normal household connection, which must not be
replaced by 300mA RCDs.
Industrial buildings usually have an RCD for fire protection with 300mA.
INFORMATION
The following pages contain general information on the operation of frequency inverters.

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3.9.1 Regulated drives in connection with residual current devices
Speed-controlled drives are one of the standard equipment in machine and plant construction
and perform various tasks. Compared to a simple motor, the electronic rectifiers or converters
require some special features for the necessary safety measures for electrical safety. Depend-
ing on the application, the use of a fault current protection device, differential current monitor-
ing or insulation monitoring can make more sense.
For electrical safety, DIN VDE 0100-410 (VDE 0100 part 410): 1997-01 "Erection of heavy cur-
rent installations up to 1000V" is a basic standard. It describes both, the admissible net forms
and the necessary protective measures against dangerous body currents. Based on this stand-
ard DIN EN 50178 (VDE 0160): 1998-04 "Equipping of heavy current systems with electronic
equipment" specifies the protective measures to be applied to controlled drives in more detail. It
calls for: "In the case of electronic equipment, the protection of persons against dangerous
body currents must be carried out in such a way that a single fault does not cause any danger."
Regulated drives with residual current devices
The TN-S system is the most common network form for the operation of controlled drives. This
is done, among other things, for EMV reasons and to avoid vagabonding currents. In accord-
ance with DIN VDE 0100-410 (VDE 0100-410): 1997-01, fault current protective devices
(ELCB) can be used as a protective measure against dangerous body currents. According to
DIN VDE 0100-482 (VDE 0100 part 482): 2003-06 "Electrical installations of buildings", cables
and wiring systems in fire-endangered plants must be protected by ELCBs with a rated differen-
tial current of 300 mA. According to IEC 60755, ELCBs differ in the type of fault currents they
can detect. In conjunction with electronic devices currents with DC components may occur.
3.9.2 Protection from Dangerous Shock Currents, use of ELCBs
To achieve increased safety in all installation systems, and in power supply ranges for which
the installation provisions stipulate or recommend the ELCB devices.
Measure for “Protection from Dangerous Shock Currents”, as regulated in DIN VDE 0100 Part
410. All measures are to be mentioned:
Protection from indirect contact – as protection against fault by shutting down in the event of
inadmissibly high contact voltage by short circuit shock on the operating resource.
Protection from direct contact – as additional protection by shutting down in the event of
contact with a live conductor. Dangerous shock currents are shut down within the shortest
possible time, if the rated fault current of the circuit breaker is 30 mA (e.g. Domestic
environment), for a personal protection system 10 mA (e.g Bathroom).
Fire prevention – Prevention of the origination of electrically-ignited fires if the rated fault
current of the circuit breaker is 300 mA. Operating premises at risk of fire to VdS 2033:
2002-02 300 mA (e.g. Factory halls).
3.9.3 Current in the protective earth conductor - Leakage current
With EMC filters in frequency converters, the leakage current is always greater than 3.5 mA
due to physics. Some types of frequency converters also achieve a leakage current of up to
300mA.
Therefore, a fixed earth connection is required and the minimum cross section of the protective
earthing conductor must conform to local safety regulations for devices with high leakage cur-
rent. This is achieved by providing a permanent fixed earthing connection with two independ-
ent conductors, each having a cross section the same as the power supply cord or greater.
Preferably, machines with frequency converters are therefore to be permanently connected to a
terminal box, otherwise an additional fixed earth connection is required, which is not routed
over the plug, and must correspond to at least the cross-section of the cable in the plug.
Since a direct current may be caused by the frequency converter in the protective earthing con-
ductor, if an upstream residual current device (ELCB / RCD) is required in the network, the fol-
lowing guidelines must be followed:

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To avoid an operating fault, you need an AC/DC-sensitive ELCB. Be absolutely sure
which leakage current security is necessary for dangerous body currents, as regulated
in DIN VDE 0100 part 410, at your mains connection.
3.9.4 When the ELCB triggers
Pulse current - sensitive ELCB type A
ELCB type A independent of rated voltage, for triggering when changing fault
currents and pulsing DC fault currents.
AC/DC - sensitive ELCB type B
ELCBs of series type B also accept the detection of smooth AC fault
currents as well as the detection of fault current shapes of type A; they
are therefore suitable for all the circuits mentioned. ELCBs of this series therefore detect all
types of fault current according to the triggering characteristic B, i.e. both smooth DC fault
currents and also all AC fault currents of all frequencies and mixed frequencies up to 1 MHz
are detected and switched off reliably in the event of a fault.
Alternating current - sensitive ELCBs of type AC (only alternating current) are
unsuitable for frequency converters. Alternating current - sensitive ELCBs of type
AC are not customarily used and are no longer permitted in Germany.
Type B must be used with 3-phase converters.
When using an external EMC filter, to avoid false error shutdowns, a time delay of at least 50
ms is required. The leakage current can exceed the threshold trigger value for an error shut-
down if the phases are not switched on at the same time.