Siemens SIMOTICS DC 1HQ7 Operating instructions

Answers for industry.
SIMOTICS DC
DC motor
Type 1HQ7
Operating Instructions / Installation Instructions
Edition 02/2016

08.02.2016 10:39
V4.00

SIMOTICS DC
DC motor
1HQ7
Operating Instructions
Installation Instructions
Edition 02/2016
Introduction 1
Safety notes 2
Description 3
Preparations for use 4
Assembling 5
Electrical connection 6
Commissioning 7
Operation 8
Maintenance 9
Spare Parts 10
Disposal 11
Service and Support A
Technical data and drawings B
Quality documents C
Checklists D

Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will be
used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to property
damage.
Qualified Personnel
The product/system described in this documentation may be operated only by personnel qualified for the specific
task in accordance with the relevant documentation, in particular its warning notices and safety instructions. Qualified
personnel are those who, based on their training and experience, are capable of identifying risks and avoiding
potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended or
approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and
maintenance are required to ensure that the products operate safely and without any problems. The permissible
ambient conditions must be complied with. The information in the relevant documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication
may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software described.
Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the information in
this publication is reviewed regularly and any necessary corrections are included in subsequent editions.
Siemens AG
Process Industries and Drives
Postfach 48 48
90026 NÜRNBERG
GERMANY
Document order number: A5E33039795A AB
Ⓟ 02/2016 Subject to change
Copyright © Siemens AG 2016.
All rights reserved

Table of contents
1 Introduction.................................................................................................................................................11
1.1 About these instructions.........................................................................................................11
2 Safety notes................................................................................................................................................13
2.1 Information for the nominated person in control of the electrical installation.........................13
2.2 The five safety rules...............................................................................................................13
2.3 Qualified personnel................................................................................................................14
2.4 Safe handling.........................................................................................................................14
2.5 Electrostatic sensitive devices...............................................................................................16
2.6 Electromagnetic compatibility.................................................................................................17
2.7 Interference immunity.............................................................................................................17
2.8 Influence on the line power supply through a strongly irregular torque..................................17
2.9 Electromagnetic fields when operating electrical power engineering installations.................18
3 Description..................................................................................................................................................19
4 Preparations for use...................................................................................................................................23
4.1 Safety-related aspects to consider when configuring the plant..............................................23
4.2 Observing the operating mode...............................................................................................23
4.3 Noise emissions.....................................................................................................................23
4.4 Ensuring cooling.....................................................................................................................24
4.5 Ensuring cooling.....................................................................................................................24
4.6 Interlock circuit for the external fan motor..............................................................................24
4.7 System-inherent frequencies.................................................................................................25
4.8 Torsional loading of the drive train due to faults in the electrical supply................................25
4.9 Transport and storage............................................................................................................25
4.9.1 Transport markings................................................................................................................25
4.9.2 Checking the delivery.............................................................................................................26
4.9.3 Attaching the rotor shipping brace prior to storage................................................................26
4.9.4 Checking the load handling attachments...............................................................................27
4.9.5 Requirements for safe lifting and transporting.......................................................................27
4.9.6 Transporting the machine set.................................................................................................28
4.9.7 Lifting and transporting the machine......................................................................................29
4.9.8 Storage...................................................................................................................................30
4.9.9 Protection against corrosion...................................................................................................33
5 Assembling.................................................................................................................................................35
5.1 Preparations for installation....................................................................................................35
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Operating Instructions 02/2016 5

5.1.1 Requirements for installation..................................................................................................35
5.1.2 Insulation resistance and polarization index..........................................................................36
5.1.3 Testing the insulation resistance and polarization index........................................................36
5.1.4 Preparing the mating faces....................................................................................................39
5.2 Lift the machine to where it will be installed, and position it...................................................39
5.2.1 Preconditions for correct alignment and secure attachment .................................................39
5.2.2 Checking the load handling attachments...............................................................................40
5.2.3 Removing the rotor shipping brace........................................................................................40
5.2.4 Removing anti-corrosion protection.......................................................................................41
5.2.5 Mounting the output elements................................................................................................42
5.2.6 Lifting and transporting the machine......................................................................................43
5.2.7 Putting the machine down......................................................................................................45
5.2.8 Drain condensate...................................................................................................................45
5.2.9 Roughly aligning the machine................................................................................................45
5.3 Installing the machine............................................................................................................46
5.3.1 Safety instructions for installation...........................................................................................46
5.3.2 Selecting fixing screws...........................................................................................................47
5.3.3 Preconditions for smooth, vibration-free operation................................................................47
5.3.4 Aligning the machine to the driven machine and attaching it to it (foundation mounting) ......47
5.3.5 Aligning the machine to the driven machine and attaching it to it (flange mounting,
vertical)...................................................................................................................................49
5.3.6 Aligning the machine to the driven machine and mounting (flange, horizontal IM B5)..........49
5.3.7 Mounting the machine............................................................................................................50
5.3.8 Axial and radial forces............................................................................................................50
5.4 Ensuring cooling by means of external fans..........................................................................51
6 Electrical connection...................................................................................................................................53
6.1 Selecting cables.....................................................................................................................53
6.2 Bringing in and routing the cables..........................................................................................53
6.3 Terminal designations............................................................................................................54
6.4 Connecting cables..................................................................................................................54
6.5 Connecting the main circuit....................................................................................................55
6.6 Connecting the grounding conductor.....................................................................................57
6.7 Internal equipotential bonding................................................................................................58
6.8 Connecting the auxiliary circuits.............................................................................................58
6.9 Connecting an external fan motor..........................................................................................60
6.10 Connecting temperature monitoring for the stator winding....................................................60
6.11 Completing connection work..................................................................................................61
7 Commissioning...........................................................................................................................................63
7.1 Preparing for commissioning..................................................................................................63
7.2 Measure the insulation resistance before commissioning......................................................64
7.3 Greasing the roller bearings prior to commissioning..............................................................64
7.4 Minimum radial forces for cylindrical roller bearings..............................................................65
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6Operating Instructions 02/2016

7.5 Commissioning an external fan..............................................................................................66
7.6 Switch on................................................................................................................................67
7.7 Overspeed..............................................................................................................................68
7.8 Switch off................................................................................................................................69
8 Operation....................................................................................................................................................71
8.1 Switching on the machine......................................................................................................72
8.2 Regreasing roller bearings.....................................................................................................73
8.3 Deactivating...........................................................................................................................73
8.4 Switching on again after an emergency switching-off............................................................73
8.5 Stoppages..............................................................................................................................73
8.5.1 Measures in non-operational periods.....................................................................................74
8.5.2 Avoidance of damage to roller bearings during stoppages....................................................75
8.5.3 Measurement of the insulation resistance after an extended stoppage.................................75
8.6 Decommissioning the machine..............................................................................................76
8.7 Re-commissioning the machine.............................................................................................76
8.8 Special operating conditions..................................................................................................76
8.9 Faults ....................................................................................................................................77
8.9.1 Inspections in the event of faults............................................................................................77
8.9.2 Faults in operation..................................................................................................................78
8.9.3 Faults at the external fan........................................................................................................78
8.9.4 Roller bearing faults...............................................................................................................79
8.9.5 Brush faults............................................................................................................................80
8.9.6 Commutator faults..................................................................................................................81
9 Maintenance...............................................................................................................................................83
9.1 Inspection and maintenance..................................................................................................83
9.1.1 Initial inspection......................................................................................................................84
9.1.2 MTTR.....................................................................................................................................86
9.1.3 Main inspection......................................................................................................................86
9.1.4 Regreasing rolling-contact bearings.......................................................................................87
9.1.5 Regreasing intervals and grease types..................................................................................88
9.1.6 Clean the machine.................................................................................................................89
9.1.7 Checking the carbon brushes................................................................................................89
9.1.8 Replacing the carbon brushes...............................................................................................90
9.1.9 Setting the brush rocker and brush holder.............................................................................91
9.1.10 Maintaining the commutator...................................................................................................91
9.1.11 Maintaining terminal boxes....................................................................................................93
9.1.12 Touch up any damaged paintwork.........................................................................................94
9.2 Repair.....................................................................................................................................94
9.2.1 Prepare servicing work...........................................................................................................95
9.2.2 Disassembling the machine...................................................................................................96
9.2.3 Removing rolling-contact bearings.........................................................................................97
9.2.4 Installing the machine............................................................................................................97
9.2.5 Mounting the rolling-contact bearings....................................................................................98
9.2.6 Replacing the speed encoder................................................................................................99
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Operating Instructions 02/2016 7

9.2.6.1 Speed sensor with conical hub..............................................................................................99
9.2.6.2 Speed sensor for overhung mounting..................................................................................100
9.2.6.3 Speed sensor for construction type IM B5...........................................................................102
10 Spare Parts...............................................................................................................................................105
10.1 Ordering data.......................................................................................................................105
10.2 Ordering spare parts via the Internet...................................................................................106
10.3 Using commercially available spare parts............................................................................106
10.4 Stator and rotor....................................................................................................................107
10.5 Rolling-contact bearing........................................................................................................108
10.5.1 Rolling-contact bearing for 1G.7, 1H.7, shaft heights 355 to 450, drive end........................108
10.5.2 Rolling-contact bearing for 1G.7, 1H.7, shaft heights 355 to 450 with one shaft extension,
non-drive end.......................................................................................................................110
10.5.3 Rolling-contact bearing for 1G.7, 1H.7, shaft heights 355 to 450 with two shaft
extensions, non-drive end....................................................................................................111
10.5.4 Rolling-contact bearing seal 1G.6, 1H.6, 1G.7, 1H.7...........................................................112
10.6 Terminal boxes.....................................................................................................................113
10.6.1 1XB7720 main terminal box.................................................................................................113
10.6.2 Auxiliary terminal box...........................................................................................................114
10.7 Speed sensor.......................................................................................................................115
10.7.1 Shaft heights 180 to 630......................................................................................................115
10.7.1.1 Speed sensor with conical hub............................................................................................115
10.7.1.2 Speed sensor for overhung mounting..................................................................................116
10.7.1.3 Speed sensor for construction type IM B5...........................................................................117
11 Disposal....................................................................................................................................................119
11.1 Introduction..........................................................................................................................119
11.2 RoHS - restricting the use of certain hazardous substances...............................................119
11.3 Country-specific legislation..................................................................................................119
11.4 Dismantling the machine......................................................................................................119
11.5 Disposal of components.......................................................................................................120
A Service and Support.................................................................................................................................121
B Technical data and drawings....................................................................................................................123
B.1 Tightening torques for screw and bolt connections..............................................................123
C Quality documents....................................................................................................................................125
D Checklists.................................................................................................................................................127
D.1 Switching on.........................................................................................................................128
D.2 Commissioning.....................................................................................................................129
D.3 Inspection at standstill..........................................................................................................130
D.4 Inspection when the motor is running..................................................................................131
Index.........................................................................................................................................................133
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SIMOTICS DC 1HQ7
8Operating Instructions 02/2016

Tables
Table 3-1 Insulation classes........................................................................................................................20
Table 3-2 Machine design ..........................................................................................................................21
Table 3-3 Data on the rating plate..............................................................................................................22
Table 4-1 Tightening torques for the shaft screw on the rotor shipping brace............................................29
Table 5-1 Stator winding insulation resistance at 40° C..............................................................................37
Table 5-2 Permissible deviations for aligning the machine with flexible coupling.......................................48
Table 6-1 Terminal designations in example B1.........................................................................................54
Table 6-2 Terminal box connection data.....................................................................................................55
Table 6-3 Tightening torque of screws with cable lugs................................................................................57
Table 6-4 Tightening torque of screws with ground terminals.....................................................................58
Table 7-1 Minimum radial forces.................................................................................................................66
Table 8-1 Vibration magnitude as a function of vibration frequency............................................................73
Table 8-2 Faults in operation.......................................................................................................................78
Table 8-3 Cooling system faults ...............................................................................................................78
Table 8-4 Roller bearing faults ...............................................................................................................79
Table 8-5 Brush faults.................................................................................................................................80
Table 8-6 Commutator faults.......................................................................................................................81
Table 9-1 MTTR in fault-free operation ......................................................................................................86
Table 9-2 Suitable greases for rolling-contact bearings (down to -20 °C)...................................................88
Table 9-3 Commutator overhaul – minimum permissible diameter.............................................................92
Table 9-4 Recommended torques for tightening the shaft journal...............................................................99
Table 9-5 Recommended torques for tightening the shaft journal.............................................................101
Table 9-6 Recommended torques for tightening the coupling...................................................................102
Table 9-7 Tightening torques for mounting couplings...............................................................................103
Table 10-1 Spare parts stator and rotor 1G.7, 1H.7, shaft heights 355 to 450...........................................107
Table 10-2 Spare parts rolling-contact bearing for 1H.7, 1G.7....................................................................108
Table 10-3 Spare parts rolling-contact bearing for 1G.7. 1H.7 with one shaft extension............................110
Table 10-4 Spare parts rolling-contact bearing for 1G.7. 1H.7 with two shaft extensions...........................111
Table 10-5 Spare parts sealing for rolling-contact bearing for 1H.6, 1G.6..................................................112
Table 10-6 Spare parts terminal box 1XB7720...........................................................................................113
Table 10-7 Spare parts auxiliary terminal box.............................................................................................114
Table 10-8 Spare parts speed sensor with conical hub for shaft heights 180 to 630..................................115
Table 10-9 Spare parts speed sensor for overhung mounting for shaft heights 180 to 630.......................116
Table 10-10 Spare parts speed sensor for construction type IM B5 for shaft heights 180 to 630.................117
Table B-1 Tightening torques for screw/bolt connections with a tolerance of ±10%.................................123
Table D-1 Items to check during switch-on................................................................................................128
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Operating Instructions 02/2016 9

Table D-2 Items to check during commissioning.......................................................................................129
Table D-3 Items to inspect when machine is at standstill..........................................................................130
Table D-4 Items to inspect when the motor is running...............................................................................131
Images
Image 3-1 Block diagram of motor type 1HQ...............................................................................................19
Image 3-2 Schematic rating plate.................................................................................................................21
Image 4-1 Rotor shipping brace without coupling (1) and with coupling (2). ...............................................29
Image 5-1 Balancing type on the drive-end side..........................................................................................42
Image 5-2 Schematic diagram: Aligning the machine to the driven machine...............................................48
Image 6-1 Connection of main terminals with cable lug...............................................................................56
Image 6-2 Connection of auxiliary terminals with cable lug..........................................................................56
Image 6-3 Connection without cable lugs.....................................................................................................56
Image 7-1 External fan with cover sheet ①.................................................................................................67
Image 9-1 Adjusting the brush rocker: fixed part (1), brush rocker (2).........................................................91
Image 9-2 Reworking the slots.....................................................................................................................93
Image 9-3 Final work on the commutator after skimming.............................................................................93
Image 9-4 Speed sensor assembly ...........................................................................................................100
Image 9-5 Speed sensor assembly ...........................................................................................................101
Image 9-6 Speed encoder mounting..........................................................................................................103
Image 10-1 Side view stator and rotor 1G.7, 1H.7.......................................................................................107
Image 10-2 Rolling-contact bearing for 1H.7, 1G.7......................................................................................108
Image 10-3 Rolling-contact bearing for 1G.7. 1H.7 with one shaft extension..............................................110
Image 10-4 Rolling-contact bearing for 1G.7. 1H.7 with two shaft extensions.............................................111
Image 10-5 Sealing for rolling-contact bearing for 1H.6, 1G.6.....................................................................112
Image 10-6 Main terminal box 1XB7720 .....................................................................................................113
Image 10-7 Cable entry plate 1XB7720.......................................................................................................113
Image 10-8 Auxiliary terminal box................................................................................................................114
Image 10-9 Speed sensor with conical hub for shaft heights 180 to 630.....................................................115
Image 10-10 Speed sensor for overhung mounting for shaft heights 180 to 630..........................................116
Image 10-11 Speed sensor for construction type IM B5 for shaft heights 180 to 630....................................117
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SIMOTICS DC 1HQ7
10 Operating Instructions 02/2016

Introduction 1
1.1 About these instructions
These instructions describe the machine and explain how to handle it, from initial delivery to
final disposal of the equipment. Keep these instructions for later use.
Read these operating instructions before you handle the machine and follow the instructions
to become familiar with its design and operating principles and thus ensure safe, problem-free
machine operation and long service life.
Please contact the Service Center (Page 121) if you have any suggestions on how to improve
this document.
Text format features
The warning notice system is explained on the rear of the inside front. Always follow the safety
instructions and notices in these instructions.
In addition to the safety-related warning notices which you must read, you will find the text in
these instructions is formatted in the following way:
1. Handling instructions are always formatted as a numbered list. Always perform the steps
in the order given.
● Lists are formatted as bulleted lists.
– Lists on the second level are hyphenated.
Note
A Note is an important item of information about the product, handling of the product or the
relevant section of the document. Notes provide you with help or further suggestions/ideas.
SIMOTICS DC 1HQ7
Operating Instructions 02/2016 11

Introduction
1.1 About these instructions
SIMOTICS DC 1HQ7
12 Operating Instructions 02/2016

Safety notes 2
2.1 Information for the nominated person in control of the electrical
installation
This electric machine has been designed and built in accordance with the specifications
contained in Directive 2006/95/EC up to April 19, 2016 - and from April 20, 2016 according to
Directive 2014/35/EU ("Low-Voltage Directive") and is intended for use in industrial plants.
Please observe the country-specific regulations when using the electric machine outside the
European Community. Follow the local and industry-specific safety and setup regulations.
The persons responsible for the plant must ensure the following:
● Planning and configuration work and all work carried out on and with the machine is only
to be done by qualified personnel.
● The operating instructions must always be available for all work.
● The technical data as well as the specifications relating to the permissible installation,
connection, ambient and operating conditions are taken into account at all times.
● The specific setup and safety regulations as well as regulations on the use of personal
protective equipment are observed.
Note
Use the services and support provided by the appropriate Service Center (Page 121) for
planning, installation, commissioning, and servicing work.
You will find safety instructions in the individual sections of this document. Follow the safety
instructions for your own safety, to protect other people and to avoid damage to property.
Observe the following safety instructions for all activities on and with the machine.
2.2 The five safety rules
For your own personal safety and to prevent material damage when carrying out any work,
always observe the safety-relevant instructions and the following five safety rules according
to EN 50110‑1 "Working in a voltage-free state". Apply the five safety rules in the sequence
stated before starting work.
Five safety rules
1. Disconnect the system.
Also disconnect the auxiliary circuits, for example, anti-condensation heating.
2. Secure against reconnection.
3. Verify absence of operating voltage.
SIMOTICS DC 1HQ7
Operating Instructions 02/2016 13

4. Ground and short-circuit.
5. Provide protection against adjacent live parts.
To energize the system, apply the measures in reverse order.
2.3 Qualified personnel
All work at the machine must be carried out by qualified personnel only. For the purpose of
this documentation, qualified personnel is taken to mean people who fulfill the following
requirements:
● Through appropriate training and experience, they are able to recognize and avoid risks
and potential dangers in their particular field of activity.
● They have been instructed to carry out work on the machine by the appropriate person
responsible.
2.4 Safe handling
Workplace safety depends on the attentiveness, care, and common sense of the personnel
who install, operate, and maintain the machine. In addition to the safety measures cited, as a
matter of principle, the use of caution is necessary when you are near the machine. Always
pay attention to your safety.
Also observe the following to prevent accidents:
● General safety regulations applicable in the country where the machine is deployed.
● Manufacturer-specific and application-specific regulations
● Special agreements made with the operator
● Separate safety instructions supplied with the machine
● Safety symbols and instructions on the machine and its packaging
WARNING
Live parts
Electric machines contain live parts.
Fatal or severe injuries and substantial material damage can occur if the covers are removed
or if the machine is not handled, operated, or maintained properly.
● Always observe the “five safety rules" (Page 13) when carrying out any work on the
machine.
● Only remove the covers using the methods described by these operating instructions.
● Operate the machine properly.
● Regularly and correctly maintain the machine.
Safety notes
2.4 Safe handling
SIMOTICS DC 1HQ7
14 Operating Instructions 02/2016

WARNING
Rotating parts
Electric machines contain dangerous rotating parts.
Fatal or severe injuries and substantial material damage can occur if the covers are removed
or if the machine is not handled, operated, or maintained properly.
● Only remove the covers using the methods described by these operating instructions.
● Operate the machine properly.
● Regularly and correctly maintain the machine.
● Secure free-standing shaft ends and other rotating parts such as couplings, belt pulleys
etc. against touch.
WARNING
Hot surfaces
Electric machines have hot surfaces. Do not touch these surfaces. They could cause burns.
● Allow the machine to cool before starting work on the machine.
● Only remove the covers using the methods described by these operating instructions.
● Operate the machine properly.
CAUTION
Hazardous substances
Chemical substances required for the setup, operation and maintenance of machines can
present a health risk.
Poisoning, skin damage, cauterization of the respiratory tract, and other health damage may
result.
● Read the information in these operating instructions and the product information supplied
by the manufacturer.
● Observe the relevant safety regulations and wear the personal protective equipment
specified.
CAUTION
Flammable substances
Chemical substances required for the setup, operation and maintenance of machines may
be flammable.
Burns and other damage to health and material may result.
● Read the information in these operating instructions and the product information supplied
by the manufacturer.
● Observe the relevant safety regulations and wear the personal protective equipment
specified.
Safety notes
2.4 Safe handling
SIMOTICS DC 1HQ7
Operating Instructions 02/2016 15

WARNING
Noise emissions
During operation, the machine's noise emission levels can exceed those permitted at the
workplace, which can cause hearing damage.
Take steps to reduce noise, such as introducing covers and protective insulation or adopting
hearing protection measures, so that the machine can be operated safely within your system.
2.5 Electrostatic sensitive devices
ESD protective measures
NOTICE
Electrostatic discharge
Electronic modules contain components that can be destroyed by electrostatic discharge.
These modules can be easily destroyed by improper handling.
To protect equipment against damage, follow the instructions given below.
● Only touch electronic modules if you absolutely have to work on them.
● The body of the person concerned must have been electrostatically discharged and
grounded immediately before any electronic modules are touched.
● Electronic modules should not be brought into contact with electrically insulating materials,
such as:
– Plastic film
– Plastic parts
– Insulating table supports
– Clothing made of synthetic fibers
● Always place electrostatic sensitive devices on conductive bases.
● Always pack, store and transport electronic modules or components in conductive
packaging, such as:
– Metallized plastic or metal containers
– Conductive foam material
– Domestic aluminum foil
Safety notes
2.5 Electrostatic sensitive devices
SIMOTICS DC 1HQ7
16 Operating Instructions 02/2016

The necessary ESD protective measures for electrostatic sensitive devices are illustrated once
again in the following drawings:
(1) Sitting (2) Standing (3) Standing/sitting
a = conductive floor surface b = ESD table c = ESD shoes
d = ESD overall e = ESD wristband f = cabinet ground connection
2.6 Electromagnetic compatibility
This machine is designed in accordance with IEC/EN 60034 and, when used as prescribed, it
satisfies the requirements of European Directive 2004/108/EC - from April 20, 2016 of the
European directive 2014/30/EU on Electromagnetic Compatibility.
2.7 Interference immunity
The machine fulfills the requirements regarding interference immunity in conformity with IEC/
EN 61000‑6‑2.
On machines with integrated sensors (e.g. PTC thermistors), the manufacturer of the overall
system must himself ensure sufficient interference immunity by selecting suitable sensor signal
leads and evaluation units.
2.8 Influence on the line power supply through a strongly irregular torque
A strongly irregular torque, for example with the drive of a reciprocating motor, forces a non-
sinusoidal motor current. The emerging harmonics can have an impermissible influence on
the line power supply via the connection lines.
Safety notes
2.8 Influence on the line power supply through a strongly irregular torque
SIMOTICS DC 1HQ7
Operating Instructions 02/2016 17

2.9 Electromagnetic fields when operating electrical power engineering
installations
WARNING
Interference to electronic devices caused by electrical power equipment
Electrical power equipment generate electric fields during operation. Potentially lethal
malfunctions can occur in medical implants, e.g. pacemakers, in the vicinity of electrical power
equipment. Data may be lost on magnetic or electronic data carriers.
● It is forbidden for people with pacemakers to enter the vicinity of the machine.
● Protect the personnel working in the plant by taking appropriate measures, such as
erecting identifying markings, safety barriers and warning signs and giving safety talks.
● Observe the nationally applicable health and safety regulations.
● Do not carry any magnetic or electronic data media.
Safety notes
2.9 Electromagnetic fields when operating electrical power engineering installations
SIMOTICS DC 1HQ7
18 Operating Instructions 02/2016

Description 3
Applications
DC machine of the 1HQ7... series are implemented with open-circuit or closed-circuit cooling
with a laminated stator yoke.
They are designed for a wide range of drive and energy conversion applications and comply
with the harmonized standards of series IEC / EN 60034 (VDE 0530).
WARNING
Risk of explosion
This machine is not designed for use in hazardous areas. An explosion can occur if the
machine is operated in these areas. This can result in death, serious injury or material damage.
Never operate this machine in hazardous areas.
Schematic diagram
Image 3-1 Block diagram of motor type 1HQ...
SIMOTICS DC 1HQ7
Operating Instructions 02/2016 19

Cooling
The forced-ventilated motor is cooled by a built-on air-to-air heat exchanger (cooling method
IC A06 A66).
Design
The machine has no housing, but is designed with a fully laminated stator yoke which allows
a rate of current change of up to 250 IN/sec.
Insulation system
The high-quality DURIGNIT® 2000 insulation system means that the motors are suitable for
use in both tropical humidity and industrial environments. You will find the insulation classes
in the following table.
Table 3-1 Insulation classes
Series Insulation class
1GG5
155 (F)
1GH5
1HS5
1HQ5
1GG6, 1GG7
180 (H)
1GH6, 1GH7
1HS6, 1HS7
1HQ6, 1HQ7
Degree of protection
The machine complies with the IP54 degree of protection.
Ambient conditions
Unless otherwise specified, the rated powers apply for continuous operation at a coolant
temperature of ≤ 40 °C and an installation altitude of up to 1000 m above sea level. Please
note any data to the contrary on the rating plate. Operating conditions must comply with the
specifications on the rating plate.
Description
SIMOTICS DC 1HQ7
20 Operating Instructions 02/2016