Siemens SINAMICS PERFECT HARMONY GH180 Parts list manual

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Advanced Motor Protection for
Variable Speed Operation
Manual
AA
A5E46373908A
Security Information 1
Safety notes 2
Introduction 3
Advanced Motor Protection
Parameters 4
RTD Terminal Connections 5
Advanced Motor Protection
and RTD Protection
Functions 6
Alarms, Faults, and Logging
Messages 7
NXGpro AMP Alarms/Faults,
Protection Variables, and
RTD Status Screens 8
Troubleshooting 9
Spare Parts Data 10
Appendix A
Service and support 11
ESD guidelines A

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
Global Services Information Technology
80200 MÜNCHEN
GERMANY
A5E46373908A
Ⓟ 06/2019 Subject to change
Copyright © Siemens AG 2019.
All rights reserved

Table of contents
1 Security Information......................................................................................................................................9
1.1 Security information .................................................................................................................9
2 Safety notes................................................................................................................................................11
2.1 General Safety Information ....................................................................................................11
2.2 Observing the Five Safety Rules............................................................................................12
2.3 Safety Information and Warnings...........................................................................................13
3 Introduction.................................................................................................................................................15
3.1 Background ...........................................................................................................................15
4 Advanced Motor Protection Parameters.....................................................................................................17
4.1 Standard Protections Block Diagram .....................................................................................17
4.2 Introduction ............................................................................................................................23
4.3 Protection Function Enable Types .........................................................................................26
5 RTD Terminal Connections ........................................................................................................................27
5.1 Installation External Wiring.....................................................................................................27
6 Advanced Motor Protection and RTD Protection Functions .......................................................................29
6.1 Top Level Menu and Submenus ............................................................................................29
6.2 Device 12 - Fixed Pickup Overspeed.....................................................................................31
6.3 Device 12 - Variable Pickup Overspeed ................................................................................33
6.4 Device 14 - Fixed Pickup Underspeed...................................................................................37
6.5 Device 14 - Variable Pickup Underspeed ..............................................................................39
6.6 Device 37 - Fixed Pickup Undercurrent .................................................................................43
6.7 Device 37 - Variable Pickup Undercurrent .............................................................................45
6.8 Device 37P - Fixed Underpower Relay .................................................................................48
6.9 Device 38 - Fixed Bearing Temperature Protective Device ...................................................50
6.10 Device 39 - Mechanical Condition Monitor - Fixed Pickup Torque Pulsation.........................51
6.11 Device 46_2 - Phase-Balance Current - Fixed Pickup Negative Sequence Overcurrent
Delay ......................................................................................................................................54
6.12 Device 48 - Incomplete Sequence Relay Device - Maximum Start Time...............................56
6.13 Device 48 - Incomplete Sequence Relay Device - Maximum Stop Time...............................57
6.14 Device 49T - Machine Thermal Model - Fixed Parameter Thermal Overload........................58
6.15 Device 49T - Machine Thermal Model - Variable Parameter Thermal Overload ...................63
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Manual, AA, A5E46373908A 3

6.16 Device 49RTD - Machine Thermal Overload - Fixed Pickup RTD Protection........................70
6.17 Device 50 - Fixed Pickup Instantaneous Overcurrent Device ...............................................80
6.18 Device 51 - Fixed Inverse Time Overcurrent .........................................................................82
6.18.1 Device 51 - Fixed Inverse Time Overcurrent .........................................................................82
6.18.2 Function 51 IEEE Pickup and Reset .....................................................................................86
6.18.3 Function 51 ANSI Pickup and Reset .....................................................................................93
6.18.4 Function 51 IAC Pickup and Reset .....................................................................................102
6.18.5 Function 51 IEC Pickup and Reset ......................................................................................111
6.18.6 Function 51 I2T Pickup and Reset ......................................................................................119
6.18.7 Function 51 I4T Pickup and Reset ......................................................................................121
6.19 Device 55 - Fixed Pickup Maximum Power Factor ..............................................................124
6.20 Device 55 - Power Factor Relay Device (Fixed minimum power factor)..............................126
6.21 Device 59G - Fixed Pickup Instantaneous Zero Sequence Overvoltage .............................128
6.22 Device 59G - Fixed Pickup Definite Minimum Time Zero Sequence Overvoltage...............130
6.23 Device 66 - Notching or Jogging Device - Starts per Hour ..................................................133
6.24 Device 66 - Notching or Jogging Device - Cold Starts per Hour ..........................................134
6.25 Device 66 - Notching or Jogging Device - Hot Starts per Hour............................................135
6.26 Device 66 - Notching or Jogging Device - Maximum Thermal Capacity Used to Start ........136
6.27 Device 81 - Fixed Pickup Overfrequency.............................................................................137
6.28 Device 81 - Variable Pickup Overfrequency ........................................................................139
6.29 Device 81 - Fixed Pickup Underfrequency...........................................................................143
6.30 Device 81 - Variable Pickup Underfrequency ......................................................................145
6.31 Device 81 - Fixed Pickup High Frequency Rate of Change.................................................149
6.32 Changing RTD Type ............................................................................................................151
6.32.1 Changing RTD Type ............................................................................................................151
7 Alarms, Faults, and Logging Messages ...................................................................................................153
7.1 Alarms, Faults, and Logging Messages ...............................................................................153
8 NXGpro AMP Alarms/Faults, Protection Variables, and RTD Status Screens........................................159
8.1 Viewing Protection Variables ...............................................................................................159
8.1.1 AMP Data Screen ................................................................................................................160
8.1.2 AMP Alarms / Faults ............................................................................................................161
8.1.3 RTD Status Screen ..............................................................................................................164
9 Troubleshooting........................................................................................................................................165
9.1 Troubleshooting ...................................................................................................................165
10 Spare Parts Data .....................................................................................................................................167
10.1 AMP Replaceable Spart Parts List.......................................................................................167
A Appendix...................................................................................................................................................169
A.1 IEEE Device Numbers and Functions..................................................................................169
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4Manual, AA, A5E46373908A

A.2 Abbreviations .......................................................................................................................171
11 Service and support..................................................................................................................................173
11.1 Field Service Operation........................................................................................................173
A ESD guidelines .........................................................................................................................................175
A.1 ESD-sensitive Components .................................................................................................175
Index.........................................................................................................................................................179
Tables
Table 4-1 Pickup Level Settings for Variable Undercurrent Protection Example ........................................20
Table 4-2 Example of per-unit and engineering unit quantities ...................................................................25
Table 6-1 Advanced Motor Protection Menu - Fixed Pickup Over Speed (ID 7181)...................................31
Table 6-2 Advanced Motor Protection Menu - Variable Pickup Over Speed (ID 7189)...............................33
Table 6-3 Advanced Motor Protection Menu - Fixed Pickup Underspeed Device (ID 7217).......................37
Table 6-4 Advanced Motor Protection Menu - Variable Pickup Underspeed (ID 7226) ..............................39
Table 6-5 Advanced Motor Protection Menu - Fixed Pickup Undercurrent Device (ID 7256) .....................43
Table 6-6 Advanced Motor Protection Menu - Variable Pickup Undercurrent Device (ID 7266).................45
Table 6-7 Advanced Motor Protection Menu - Fixed Pickup Underpower Relay (ID 7297) ........................48
Table 6-8 Advanced Motor Protection Menu - Mechanical Condition Monitor - Fixed Pickup Torque
Pulsation (ID 7306)......................................................................................................................51
Table 6-9 Advanced Motor Protection Menu - Phase Balance Current - Fixed Negative Sequence
Over Current (ID 7316)................................................................................................................54
Table 6-10 Advanced Motor Protection Menu - Incomplete Sequence - Maximum Start Time (ID 7325)......56
Table 6-11 Advanced Motor Protection Menu - Incomplete Sequence - Maximum Stop Time (ID 7330)......57
Table 6-12 Advanced Motor Protection Menu - Machine Thermal Model - Fixed Parameter Thermal
Overload (ID 7335)......................................................................................................................58
Table 6-13 Advanced Motor Protection Menu - Machine Thermal Model - Variable Thermal Overload
(ID 7352) .....................................................................................................................................63
Table 6-14 Values of the k-Factor Settings ...................................................................................................69
Table 6-15 RTD Protection Menu - Machine Thermal Overload - Fixed Pickup RTD Protection (ID 7429)......70
Table 6-16 Advanced Motor Protection Menu - Fixed Pickup Instantaneous Overcurrent (ID 7515) ...........80
Table 6-17 Advanced Motor Protection Menu - Fixed Pickup Inverse Time Overcurrent (ID 7533) .............82
Table 6-18 IEEE Curve Data Table...............................................................................................................87
Table 6-19 ANSI Curve Data Table...............................................................................................................94
Table 6-20 IAC Curve Data Table ...............................................................................................................103
Table 6-21 Advanced Motor Protection Menu - Fixed Pickup Maximum Power Factor (ID 7573) ..............124
Table 6-22 Advanced Motor Protection Menu - Fixed Pickup Minimum Power Factor (ID 7582) ...............126
Table 6-23 Advanced Motor Protection Menu - Fixed PickupInstantaneous Zero Sequence
Overvoltage (ID 7563)...............................................................................................................128
Table 6-24 Advanced Motor Protection Menu - Fixed Pickup Instantaneous Overcurrent (ID 7524) .........130
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Manual, AA, A5E46373908A 5

Table 6-25 Advanced Motor Protection Menu - Starts per Hour (ID 7590) ................................................133
Table 6-26 Advanced Motor Protection Menu - Notching or Jogging - Cold Starts per Hour (ID 7593).....134
Table 6-27 Advanced Motor Protection Menu - Hot Starts per Hour (ID 7598)..........................................135
Table 6-28 Motor Protection Menu - Maximum Thermal Capacity Used to Start (ID 7603).......................136
Table 6-29 Advanced Motor Protection Menu - Fixed Pickup Overfrequency (ID 7606).............................137
Table 6-30 Advanced Motor Protection Menu - Variable Pickup Overfrequency (ID 7615) ........................139
Table 6-31 Advanced Motor Protection Menu - Fixed Pickup Underfrequency (ID 7645)...........................143
Table 6-32 Advanced Motor Protection Menu - Variable Pickup Underfrequency (ID 7654) .....................145
Table 6-33 Advanced Motor Protection Menu - Fixed Pickup High Frequency Rate of Change (ID 7684)....149
Table 7-1 Advanced Motor Protection Function Event Log Table.............................................................153
Table 7-2 RTD Protection Function Event Log Table................................................................................156
Figures
Figure 4-1 Generalized Protection Function Block Diagram.........................................................................17
Figure 4-2 Various Pickup and Dropout Time Delay Counter Examples of Operation.................................19
Figure 4-3 Variable Pickup Under Current Graph.........................................................................................21
Figure 4-4 AMP Hardware Block Diagram....................................................................................................24
Figure 5-1 RTD Termination Diagram (for internal and external wiring).......................................................27
Figure 5-2 Internal and External Wiring for Unused RTD Inputs ..................................................................28
Figure 6-1 Overspeed Protection Diagram...................................................................................................32
Figure 6-2 Overspeed Protection Diagram...................................................................................................36
Figure 6-3 Underspeed Protection Diagram.................................................................................................38
Figure 6-4 Underspeed Protection Diagram.................................................................................................42
Figure 6-5 UnderCurrent Protection .............................................................................................................44
Figure 6-6 Undercurrent Protection Diagram................................................................................................47
Figure 6-7 Underpower Protection Diagram.................................................................................................49
Figure 6-8 Per Unit Torque...........................................................................................................................52
Figure 6-9 Mean of Torque Dataset .............................................................................................................52
Figure 6-10 RMS Value of Pulsating Torque..................................................................................................52
Figure 6-11 Torque Pulsation Diagram...........................................................................................................53
Figure 6-12 Negative Sequence Current Diagram .........................................................................................55
Figure 6-13 Thermal Capacity used as determined by Stator Temperature...................................................61
Figure 6-14 Example of Variable Parameter Thermal Overload Protection k-Factor ....................................69
Figure 6-15 Overcurrent Protection Diagram..................................................................................................81
Figure 6-16 User Programmed OverCurrent Trip Curve Example .................................................................85
Figure 6-17 IEEE Pickup Curve Equation.......................................................................................................87
Figure 6-18 IEEE Reset Curve Equation........................................................................................................87
Figure 6-19 IEEE Extremely Inverse Pickup Time..........................................................................................88
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6Manual, AA, A5E46373908A

Figure 6-20 IEEE Extremely Inverse Reset Time...........................................................................................89
Figure 6-21 IEEE Very Inverse Pickup Time ..................................................................................................90
Figure 6-22 IEEE Very Inverse Reset Time....................................................................................................91
Figure 6-23 IEEE Moderately Inverse Pickup Time........................................................................................92
Figure 6-24 IEEE Moderately Inverse Reset Time .........................................................................................93
Figure 6-25 ANSI Pickup Curve Equation ......................................................................................................94
Figure 6-26 ANSI Reset Curve Equation........................................................................................................94
Figure 6-27 ANSI Extremely Inverse Pickup Time .........................................................................................95
Figure 6-28 ANSI Extremely Inverse Reset Time...........................................................................................96
Figure 6-29 ANSI Very Inverse Pickup Time..................................................................................................97
Figure 6-30 ANSI Very Inverse Reset Time ...................................................................................................98
Figure 6-31 ANSI Inverse Pickup Time ..........................................................................................................99
Figure 6-32 ANSI Inverse Reset Time..........................................................................................................100
Figure 6-33 ANSI Moderately Inverse Pickup Time......................................................................................101
Figure 6-34 ANSI Moderately Inverse Reset Time.......................................................................................102
Figure 6-35 IAC pickup-curve equation ........................................................................................................103
Figure 6-36 IAC Reset Curve Equation ........................................................................................................103
Figure 6-37 IAC Extremely Inverse Pickup Time..........................................................................................104
Figure 6-38 IAC Extremely Inverse Reset Time ...........................................................................................105
Figure 6-39 IAC Very Inverse Pickup Time ..................................................................................................106
Figure 6-40 IAC Very Inverse Reset Time....................................................................................................107
Figure 6-41 IAC Inverse Pickup Time...........................................................................................................108
Figure 6-42 IAC Inverse Reset Time ............................................................................................................109
Figure 6-43 IAC Short Inverse Pickup Time .................................................................................................110
Figure 6-44 IAC Short Inverse Reset Time...................................................................................................111
Figure 6-45 IEC Pickup Curve Equation.......................................................................................................111
Figure 6-46 IEC Reset Curve Equation ........................................................................................................111
Figure 6-47 IEC Inverse Pickup Time...........................................................................................................112
Figure 6-48 IEC Inverse Reset Time ............................................................................................................113
Figure 6-49 IEC Extremely Inverse Pickup Time..........................................................................................114
Figure 6-50 IEC Extremely Inverse Reset Time ...........................................................................................115
Figure 6-51 IEC Short Inverse Pickup Time .................................................................................................116
Figure 6-52 IEC Short Inverse Reset Time...................................................................................................117
Figure 6-53 IEC Very Inverse Pickup Time ..................................................................................................118
Figure 6-54 IEC Very Inverse Reset Time....................................................................................................119
Figure 6-55 I2t Pickup Time Equation ..........................................................................................................119
Figure 6-56 I2t Reset Time Equation............................................................................................................120
Figure 6-57 I2t Inverse Pickup Time.............................................................................................................120
Figure 6-58 I2t Inverse Reset Time ..............................................................................................................121
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Manual, AA, A5E46373908A 7

Figure 6-59 I4t Pickup Time equation...........................................................................................................121
Figure 6-60 I4t Reset Time equation ............................................................................................................122
Figure 6-61 I4t Inverse Pickup......................................................................................................................122
Figure 6-62 I4t Inverse Reset .......................................................................................................................123
Figure 6-63 OverPF Protection Diagram ......................................................................................................125
Figure 6-64 UnderPF Protection Diagram ....................................................................................................127
Figure 6-65 OverZeroSeqVoltage Protection Diagram.................................................................................129
Figure 6-66 OverZeroSeqVoltage Protection Diagram.................................................................................131
Figure 6-67 OverFrequency Protection Diagram..........................................................................................138
Figure 6-68 Overfrequency Protection Diagram...........................................................................................142
Figure 6-69 UnderFrequency Protection Diagram........................................................................................144
Figure 6-70 Underfrequency Protection Diagram.........................................................................................148
Figure 6-71 OverFrequencyRate Protection.................................................................................................150
Figure 8-1 Display Parameters...................................................................................................................159
Figure 8-2 AMP Data Screen......................................................................................................................161
Figure 8-3 AMP Alarms / Faults Screen .....................................................................................................162
Figure 8-4 Output Data IDs ........................................................................................................................163
Figure 8-5 RTD Status Screen ...................................................................................................................164
Figure A-1 ESD Protective Measures .........................................................................................................177
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Advanced Motor Protection for Variable Speed Operation
8Manual, AA, A5E46373908A

Security Information 1
1.1 Security information
Siemens provides products and solutions with industrial security functions that support the
secure operation of plants, systems, machines and networks.
In order to protect plants, systems, machines and networks against cyber threats, it is
necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial
security concept. Siemens’ products and solutions constitute one element of such a concept.
Customers are responsible for preventing unauthorized access to their plants, systems,
machines and networks. Such systems, machines and components should only be connected
to an enterprise network or the internet if and to the extent such a connection is necessary and
only when appropriate security measures (e.g. firewalls and/or network segmentation) are in
place.
For additional information on industrial security measures that may be implemented, please
visit
https://www.siemens.com/industrialsecurity.
Siemens’ products and solutions undergo continuous development to make them more secure.
Siemens strongly recommends that product updates are applied as soon as they are available
and that the latest product versions are used. Use of product versions that are no longer
supported, and failure to apply the latest updates may increase customer’s exposure to cyber
threats.
To stay informed about product updates, subscribe to the Siemens Industrial Security RSS
Feed under
https://www.siemens.com/industrialsecurity.
Advanced Motor Protection for Variable Speed Operation
Manual, AA, A5E46373908A 9

Security Information
1.1 Security information
Advanced Motor Protection for Variable Speed Operation
10 Manual, AA, A5E46373908A

Safety notes 2
2.1 General Safety Information
Proper Use
SINAMICS Perfect Harmony™ GH180 medium voltage drives must always be installed in
closed electrical operating areas. The drive is connected to the industrial network via a circuit-
breaker or contactor that is electrically connected to the VFD control to enable the drive
protection features.
The specific transport conditions must be observed when the equipment is transported. The
equipment shall be assembled/installed and the separate cabinet units connected properly by
cable and/or busbar in accordance with the assembly/installation instructions. The relevant
instructions regarding correct storage, EMC-compliant installation, cabling, shielding and
grounding and an adequate auxiliary power supply must be strictly observed. Fault-free
operation is also dependent on careful operation and maintenance.
The power sections are designed for variable-speed drives use with synchronous and
asynchronous motors. Operating modes, overload conditions, load cycles, and ambient
conditions different to those described in this document are allowed only by special
arrangement with the manufacturer.
Commissioning should only be carried out by trained service personnel in accordance with the
commissioning instructions.
System components such as circuit-breaker, transformer, cables, cooling unit, motor, speed
sensors, etc., must be matched to VFD operation. System configuration may only be carried out
by an experienced system integrator.
Advanced Motor Protection for Variable Speed Operation
Manual, AA, A5E46373908A 11

2.2 Observing the Five Safety Rules
There are five safety rules that must always be observed to assure not only personal safety, but
to prevent material damage as well. Always obey safety-related labels located on the product
itself and always read and understand each safety precaution prior to operating or working on
the drive.
The five safety rules:
1. Disconnect the power applied to the system.
2. Protect against reapplication of power.
3. Make sure that the equipment is de-energized.
4. Apply grounding (earthing) means.
5. Cover or enclose adjacent components to secure all forms of hazardous energy.
DANGER
Danger Due to High Voltages
High voltages cause death or serious injury if the safety instructions are not observed or if the
equipment is handled incorrectly.
Potentially fatal voltages occur when this equipment is in operation which can remain present
even after the VFD is switched off.
Ensure that only qualified and trained personnel carry out work on the equipment.
Follow the five safety rules during each stage of the work.
Safety notes
2.2 Observing the Five Safety Rules
Advanced Motor Protection for Variable Speed Operation
12 Manual, AA, A5E46373908A

2.3 Safety Information and Warnings
DANGER
Hazardous Voltage!
●Always follow the proper lock-out/tag-out procedures before beginning any maintenance
or troubleshooting work on the VFD.
●Always follow standard safety precautions and local codes during installation of external
wiring. The installation must follow wiring practices and insulation systems as specified in
IEC 61800-5-1.
●Hazardous voltages may still exist within the VFD cabinets even when the disconnect
switch is open (off) and the supply power is shut off.
●Only qualified individuals should install, operate, troubleshoot, and maintain this VFD. A
qualified individual is "a person, who is familiar with the construction and operation of the
equipment and the hazards involved."
●Always work with one hand, wear electrical safety gloves, wear insulated electrical hazard
rated safety shoes, and safety goggles. Also, always work with another person present.
●Always use extreme caution when handling or measuring components that are inside the
enclosure. Be careful to prevent meter leads from shorting together or from touching other
terminals.
●Use only instrumentation (e.g., meters, oscilloscopes, etc.) intended for high voltage
measurements (that is, isolation is provided inside the instrument, not provided by isolating
the chassis ground of the instrument).
●Never assume that switching off the input disconnector will remove all voltage from internal
components. Voltage is still present on the terminals of the input disconnector. Also, there
may be voltages present that are applied from other external sources.
●Never touch anything within the VFD cabinets until verifying that it is neither thermally hot
nor electrically alive.
●Never remove safety shields (marked with a HIGH VOLTAGE sign) or attempt to measure
points beneath the shields.
●Never operate the VFD with cabinet doors open. The only exception is the control cabinet.
●Never connect any grounded (i.e., non-isolated) meters or oscilloscopes to the system.
●Never connect or disconnect any meters, wiring, or printed circuit boards while the VFD is
energized.
●Never defeat the instrument’s grounding.
● When a system is configured with VFD bypass switchgear (e.g. contactors between line
and motor, and VFD and motor), these switches should be interlocked so that the line
voltage is never applied to the VFD output if the medium voltage input is removed from the
VFD.
● When a system is configured with VFD pre-charge, medium voltage is present on the
primary side of the input transformer and upstream device even though the MV contactor
is not closed.
Safety notes
2.3 Safety Information and Warnings
Advanced Motor Protection for Variable Speed Operation
Manual, AA, A5E46373908A 13

WARNING
Potential Arc Hazard
● Arcing can result in damage to property, serious injury and even death.
● The equipment has not been tested and rated for arc flash protection.
● Avoiding arc hazard risks is dependent upon proper installation and maintenance.
● Incorrectly applied equipment, incorrectly selected, connected or unconnected cables, or
the presence of foreign materials can cause arcing in the equipment.
● Follow all applicable precautionary rules and guidelines as used in working with medium
voltage equipment.
● The equipment may be used only:
– for the applications defined as suitable in the technical description.
– in combination with equipment and components supplied by other manufacturers which
have been approved and recommended by Siemens.
● Always follow the facility / installation site rules / guidelines for Personal Protectiive
Equipment (PPE) based on the Arc Flash study of that facility.
Additional safety precautions and warnings appear throughout this manual. These important
messages should be followed to reduce the risk of personal injury or equipment damage.
WARNING
Obey Rules to Avoid Risk of Death
●Always comply with local codes and requirements if disposal of failed components is
necessary.
●Always ensure the use of an even and flat truck bed to transport the VFD system. Before
unloading, be sure that the concrete pad is level for storage and permanent positioning.
●Always confirm proper tonnage ratings of cranes, cables, and hooks when lifting the VFD
system. Dropping the cabinet or lowering it too quickly could damage the unit.
●Never disconnect control power while medium voltage is energized. This could cause
severe system overheating and/or damage.
●Never store flammable material in, on, or near the drive enclosure. This includes
equipment drawings and manuals.
●Never use fork trucks to lift cabinets that are not equipped with lifting tubes. Be sure that
the fork truck tines fit the lifting tubes properly and are the appropriate length.
Safety notes
2.3 Safety Information and Warnings
Advanced Motor Protection for Variable Speed Operation
14 Manual, AA, A5E46373908A

Introduction 3
3.1 Background
Unlike other motor protection management relays, the SINAMICS Advanced Motor Protection
(AMP) is fully integrated into the drive itself, requiring no installation or mounting. Protection
variables and RTD data used by the AMP are tested to ensure that the AMP is functioning
properly and is ready for parameter setting before leaving the factory. To assure motor and
process protection, it is necessary to define protection settings in such a way as to prevent
motor and process damage, which can occur in various manners and conditions.
Today industrial equipment is designed to be operated for 20 years or longer. Medium voltage
motors are exposed to environmental and mechanical stresses that, over time, could lead to
motor degradation and malfunction. The monitoring and protection of such medium voltage
motors is an essential element in the overall industrial process protection. These protection
schemes are needed to avoid financial losses caused by unexpected process downtown.
Medium voltage motors are operated either directly on line (DOL) or through variable frequency
drives (VFDs). Thus, they require protection from the following conditions:
● input line events
● high temperatures, insulation and bearing failures
● conditions created by a change in a load
– overload
– underload
– imbalance
– jamming
The advanced motor protection algorithms described in this manual can be used to protect
systems from such events. In addition, some features can also be configured to detect and
protect against undesirable process conditions.
The following chapters provide an overview of the function itself, followed by the function as
implemented in the GH180 drive.
Advanced Motor Protection for Variable Speed Operation
Manual, AA, A5E46373908A 15

Introduction
3.1 Background
Advanced Motor Protection for Variable Speed Operation
16 Manual, AA, A5E46373908A

Advanced Motor Protection Parameters 4
4.1 Standard Protections Block Diagram
Time Protections Standard Block Diagram
A standard block diagram is used for many definite time protections. The Motor Protection
Relay function design for various time protections is shown in the figure Generalized Protection
Function Block Diagram.
Low Pass
Filter
Protec!on Variable
(Voltage, Current,
etc.)
Pickup
Level
>
<
Σ
+
-
1=pickup
0=dropout
Enable (1)
Disable (0)
Time
Constant
Pickup
Time Delay
(Counter)
Dropout
Time Delay
(Counter)
Count
Enable
Zero
>=
>=
Output
Output
Pickup
Time Delay
Dropout
Time Delay
Count
Enable
Trip or Alarm
Output
Reset
Reset
Over/
Under
Select
Low Pass
Filter
Time
Constant
Reset
1-(Dropout
Level)
Latch Control
1 = latched
Zero
Pickup
Timed
Out
Dropout
Timed
Out
Figure 4-1 Generalized Protection Function Block Diagram
Note
Refer to the appendix of this manual and IEEE C37.2 to obtain further information about device
numbers and functions.
Advanced Motor Protection for Variable Speed Operation
Manual, AA, A5E46373908A 17

The functions that operate in accordance with the standard architecture are:
● Device 12 - Fixed pickup overspeed
● Device 12 - Variable pickup overspeed
● Device 14 - Fixed pickup underspeed
● Device 14 - Variable pickup underspeed
● Device 37 - Fixed pickup undercurrent
● Device 37 - Variable pickup undercurrent
● Device 37P - Fixed pickup underpower
● Device 39 - Mechanical condition monitor - Fixed pickup torque pulsation
● Device 46_2 - Phase-balance current - Fixed pickup negative sequence overcurrent
● Device 49RTD - Machine thermal overload - Fixed pickup RTD protection
● Device 50 - Fixed pickup instantaneous overcurrent
● Device 51 - Fixed pickup inverse time overcurrent
● Device 55 - Fixed pickup maximum power factor
● Device 55 - Fixed pickup minimum power factor
● Device 59G - Fixed pickup definite minimum time zero sequence overvoltage
● Device 81 - Fixed pickup overfrequency
● Device 81 - Variable pickup overfrequency
● Device 81 - Fixed pickup underfrequency
● Device 81 - Fixed pickup high frequency rate of change
The standard block compares a protection variable to a reference which is referred to in the
block diagram as the pickup level. To illustrate, for the fixed underspeed protection, the
reference would be motor speed, and the pickup level would be the Fixed Underspeed Pickup
Level (7218).
The comparator can be configured to make the block an "over" function (a trip or alarm can be
generated when the protection variable is higher than the pickup level) or an "under" function
(a trip or alarm can be generated when the protection variable is lower than the pickup level).
Adjustable low pass filtering is accomplished on both the protection variable and the pickup
level prior to the variables being applied to the greater than or less than comparator function.
A true state (logic one) at the output of the comparator indicates that a pickup is occurring and
that a trip or alarm may result. The pickup condition modifies the threshold of the comparator
with a programmable amount of hysteresis to avoid excessive toggling due to noise in the
reference or protection variable. The amount of hysteresis is determined as a percentage of the
pickup level by the adjustable parameter referred to as the dropout level.
The block uses two counters to control the generation of an alarm or trip output. The output can
be used as a trip signal or as an alarm signal where the alarm can be set to a latched mode or
an unlatched mode. The two counters are the pickup time delay counter and the dropout time
delay counter. The pickup time delay counter is used to delay the time between a pickup and
the generation of a trip or alarm signal. The pickup time delay is a programmable parameter that
can be adjusted over a range that depends on the particular protection variable being used.The
Advanced Motor Protection Parameters
4.1 Standard Protections Block Diagram
Advanced Motor Protection for Variable Speed Operation
18 Manual, AA, A5E46373908A