Siemens SENTRON PAC3120 User manual

PAC3120 and PAC3220

SENTRON
Power Monitoring Device 7KM
PAC3120 and PAC3220
Equipment Manual
10/2019
L1V30425208F-01
Introduction
1
Description
2
Mounting
3
Connection
4
Commissioning
5
Operator control
6
Parameter assignment
7
Security features
8
Service and maintenance
9
Technical data
10
Dimensional drawings
11
Appendix
A

Siemens AG
Smart Infrastructure
Low Voltage Products
Postfach 10 09 53
93009 REGENSBURG
GERMANY
Ⓟ
10/2019 Subject to change
Copyright © Siemens AG 2019.
All rights reserved
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.

PAC3120 and PAC3220
Equipment Manual, 10/2019, L1V30425208F-01 3
Table of contents
1 Introduction............................................................................................................................................. 7
1.1 Components of the product ......................................................................................................7
1.2 Latest information .....................................................................................................................8
1.3 Technical Support.....................................................................................................................8
1.4 Open Source Software..............................................................................................................8
1.5 Security information..................................................................................................................9
1.6 General safety notes...............................................................................................................10
1.7 Protective mechanisms against manipulation ........................................................................11
2 Description............................................................................................................................................ 13
2.1 Features..................................................................................................................................13
2.2 Measuring inputs.....................................................................................................................17
2.3 Average values and counters .................................................................................................21
2.3.1 Averaging measured values ...................................................................................................21
2.3.2 Acquisition of power demand..................................................................................................22
2.3.3 Energy counters......................................................................................................................22
2.3.4 History of active energy consumption.....................................................................................23
2.3.5 Configurable universal counter...............................................................................................23
2.3.6 Operating hours counter.........................................................................................................23
2.3.7 Limits.......................................................................................................................................23
2.4 Digital inputs and outputs .......................................................................................................26
2.4.1 Digital inputs ...........................................................................................................................26
2.4.2 Digital outputs .........................................................................................................................27
2.5 RS485 interface PAC3120 and PAC3220 only ......................................................................29
2.6 Ethernet interface (PAC3220 only).........................................................................................30
2.7 Slots for expansion modules...................................................................................................32
3 Mounting............................................................................................................................................... 35
3.1 Mounting on the switching panel ............................................................................................37
3.2 Deinstallation ..........................................................................................................................38
4 Connection ........................................................................................................................................... 39
4.1 Safety instructions...................................................................................................................39
4.2 Connections............................................................................................................................42
4.3 Connection examples .............................................................................................................46
4.4 Connecting to the RS485 bus (PAC3120 only) ......................................................................53

Table of contents
4
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5 Commissioning ..................................................................................................................................... 55
5.1 Overview................................................................................................................................ 55
5.2 Applying supply voltage ......................................................................................................... 56
5.3 Parameterizing the device ..................................................................................................... 56
5.3.1 Basic parameters................................................................................................................... 57
5.3.2 Additional settings.................................................................................................................. 58
5.4 Applying the measuring voltage............................................................................................. 58
5.5 Applying the measuring current............................................................................................. 59
5.6 Checking the displayed measured values ............................................................................. 60
6 Operator control.................................................................................................................................... 61
6.1 Device interface ..................................................................................................................... 61
6.1.1 Displays and operator controls .............................................................................................. 61
6.1.2 Special display elements ....................................................................................................... 62
6.1.3 LED ........................................................................................................................................ 63
6.1.4 Menu navigation..................................................................................................................... 65
6.1.4.1 Measured value level............................................................................................................. 65
6.1.4.2 Main menu level..................................................................................................................... 66
6.1.4.3 Setting level............................................................................................................................ 66
6.1.4.4 Editing level............................................................................................................................ 66
6.1.5 Control keys........................................................................................................................... 67
7 Parameter assignment.......................................................................................................................... 69
7.1 Introduction ............................................................................................................................ 69
7.2 Parameterizing via the operator interface.............................................................................. 70
7.2.1 Device information ................................................................................................................. 71
7.2.2 Language............................................................................................................................... 71
7.2.3 Basic parameters................................................................................................................... 72
7.2.4 Date/time................................................................................................................................ 73
7.2.5 Integrated I/Os ....................................................................................................................... 75
7.2.6 Communication...................................................................................................................... 80
7.2.7 Display ................................................................................................................................... 82
7.2.8 Advanced............................................................................................................................... 83
7.2.8.1 Password ............................................................................................................................... 83
7.2.8.2 Write protection...................................................................................................................... 84
7.2.8.3 Resetting................................................................................................................................ 86
8 Security features................................................................................................................................... 87
8.1 Password protection .............................................................................................................. 87
8.2 Hardware write protection...................................................................................................... 89
8.3 Device access control (IP filter) (PAC3220 only)................................................................... 90
8.4 Configuring the Modbus TCP port (PAC3220 only)............................................................... 91

Table of contents
PAC3120 and PAC3220
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9 Service and maintenance...................................................................................................................... 93
9.1 Cleaning..................................................................................................................................93
9.2 Firmware update.....................................................................................................................93
9.3 Warranty .................................................................................................................................94
10 Technical data ...................................................................................................................................... 95
10.1 Technical data.........................................................................................................................95
10.2 Labeling ................................................................................................................................106
11 Dimensional drawings......................................................................................................................... 109
A Appendix............................................................................................................................................. 111
A.1 Modbus .................................................................................................................................111
A.1.1 Function codes......................................................................................................................111
A.1.2 Exception codes....................................................................................................................112
A.1.3 Modbus measured variables with the function codes 0x03 and 0x04..................................113
A.1.4 Structure - Digital input status and digital output status with the function codes 0x03
and 0x04 ...............................................................................................................................119
A.1.5 Structure - Device diagnostics and device status with the function codes 0x03 and
0x04 ......................................................................................................................................120
A.1.6 Modbus status parameters with the function code 0x02 ......................................................121
A.1.7 Modbus settings with the function codes 0x03, 0x04 and 0x10 ...........................................123
A.1.8 Modbus communication parameters with the function codes 0x03, 0x04 and 0x10............136
A.1.9 Modbus command parameters.............................................................................................138
A.1.10 MODBUS standard device identification with the function code 0x2B .................................139
A.1.11 Demand value measured variables with Modbus function code 0x14 .................................140
A.1.12 Active energy history with Modbus function code 0x14........................................................147
Index................................................................................................................................................... 155

Table of contents
6
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PAC3120 and PAC3220
Equipment Manual, 10/2019, L1V30425208F-01 7
Introduction
1
1.1 Components of the product
Scope of supply of PAC3120
The PAC3120 package includes:
●One PAC3120 power monitoring device
●Two brackets for panel mounting
●A set of operating instructions for the PAC3120
Scope of supply of PAC3220
The PAC3220 package includes:
●One PAC3220 power monitoring device
●Two brackets for panel mounting
●A set of operating instructions for the PAC3220
Available software
●SENTRON powerconfig software
(https://support.industry.siemens.com/cs/ww/en/view/63452759)
●SENTRON powermanager software
(https://support.industry.siemens.com/cs/document/64850998)
Available accessories
●Compact bracket (7KM9900-0GA00-0AA0)
Accessories available only for the PAC3220
●7KM PROFIBUS DP expansion module
(7KM9300-0AB00-0AA0; 7KM9300-0AB01-0AA0)
●7KM RS485 expansion module
(7KM9300-0AM00-0AA0)
●7KM 4DI/2DO expansion module
(7KM9200-0AB00-0AA0)

Introduction
1.2 Latest information
8
PAC3120 and PAC3220
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●7KM I(N), I(Diff) expansion module, analog
(7KM9200-0AD00-0AA0)
●7KM Switched Ethernet PROFINET expansion module
(7KM9300-0AE02-0AA0)
1.2 Latest information
Up-to-the-minute information
You can find further support on the Internet (http://www.siemens.com/lowvoltage/technical-
assistance).
1.3 Technical Support
You can find further support on the Internet at:
Technical Support (http://www.siemens.com/lowvoltage/technical-support)
1.4 Open Source Software
This product, solution or service ("Product") contains third-party software components.
These components are Open Source Software licensed under a license approved by the
Open Source Initiative (www.opensource.org (http://www.opensource.org)) or similar
licenses as determined by SIEMENS ("OSS") and/or commercial or freeware software
components. With respect to the OSS components, the applicable OSS license conditions
prevail over any other terms and conditions covering the Product. The OSS portions of this
Product are provided royalty-free and can be used at no charge.
If SIEMENS has combined or linked certain components of the Product with/to OSS
components licensed under the GNU LGPL version 2 or later as per the definition of the
applicable license, and if use of the corresponding object file is not unrestricted ("LGPL
Licensed Module", whereas the LGPL Licensed Module and the components that the LGPL
Licensed Module is combined with or linked to is the "Combined Product"), the following
additional rights apply, if the relevant LGPL license criteria are met: (i) you are entitled to
modify the Combined Product for your own use, including but not limited to the right to
modify the Combined Product to relink modified versions of the LGPL Licensed Module, and
(ii) you may reverse-engineer the Combined Product, but only to debug your modifications.
The modification right does not include the right to distribute such modifications and you
shall maintain in confidence any information resulting from such reverse-engineering of a
Combined Product.
Certain OSS licenses require SIEMENS to make source code available, for example, the
GNU General Public License, the GNU Lesser General Public License and the Mozilla Public
License. If such licenses are applicable and this Product is not shipped with the required
source code, a copy of this source code can be obtained by anyone in receipt of this

Introduction
1.5 Security information
PAC3120 and PAC3220
Equipment Manual, 10/2019, L1V30425208F-01 9
information during the period required by the applicable OSS licenses by contacting the
following address:
Siemens AG
Smart Infrastructure
Low Voltage Products
Technical Support
Postfach 10 09 53
93009 Regensburg
Germany
www.siemens.com/lowvoltage/support-request
(https://support.industry.siemens.com/cs/us/en/ps)
Keyword: Open Source Request (please specify Product name and version, if applicable)
SIEMENS may charge a handling fee of up to 5 EUR to fulfil the request.
Warranty regarding further use of the Open Source Software
SIEMENS' warranty obligations are set forth in your agreement with SIEMENS. SIEMENS
does not provide any warranty or technical support for this Product or any OSS components
contained in it if they are modified or used in any manner not specified by SIEMENS. The
license conditions may contain disclaimers that apply between you and the respective
licensor. For the avoidance of doubt, SIEMENS does not make any warranty commitment on
behalf of or binding upon any third-party licensor. The Open Source Software used in the
product and the license agreements concerning this software can be found in the
Readme_OSS.
1.5 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 keep up to date with all the latest product updates, subscribe to the Siemens Industrial
Security RSS Feed at (https://www.siemens.com/industrialsecurity).

Introduction
1.6 General safety notes
10
PAC3120 and PAC3220
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1.6 General safety notes
DANGER
Hazardous voltage.
Will cause death, serious personal injury, or equipment damage.
Turn off and lock out all power supplying this equipment before working on this device.
WARNING
Impairment of protection as a result of improper use.
Unsuitable or improper use and opening or manipulating the device may cause death,
serious personal injury, equipment damage or device failure.
The effectiveness of the protective systems integrated in the device may be undermined if it
is not used in the proper way.
The device may be used only for the applications described in the catalog and the
associated technical documentation.
Note
These operatin
g instructions do not purport to cover all details or variations in equipment, or
to provide for every possible contingency in c
onnection with installation, operation, or
maintenance. Should additional information be desired, or should particular problems
arise
that are not discussed in enough detail in the operating instructions, please contact
Technical Support (
https://www.siemens.com/lowvoltage/technical-support) for the
information
you require.
Safety-related symbols on the device
Symbol
Meaning
(1) Risk of electric shock
(2) General warning symbol
(3) Electrical installation and maintenance by qualified personnel only

Introduction
1.7 Protective mechanisms against manipulation
PAC3120 and PAC3220
Equipment Manual, 10/2019, L1V30425208F-01 11
See also
Applying supply voltage (Page 56)
Applying the measuring voltage (Page 58)
Applying the measuring current (Page 59)
1.7 Protective mechanisms against manipulation
Note
Risk of manipulation
Several protective mechanisms can be activated in the device.
In order to reduce the risk of manipulation
occurring on the device, it is recommended that
the protective mechanisms available in the device are activated:
•
Password protection, to protect device against unintentional adjustment of parameters.
•
Hardware write protection, to effectively prevent changes to the device parameters
without physical access to the device.
For further information, please refer to chapter Parameterizing via the operator interface
(Page 70).

Introduction
1.7 Protective mechanisms against manipulation
12
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PAC3120 and PAC3220
Equipment Manual, 10/2019, L1V30425208F-01 13
Description
2
2.1 Features
Area of application
These are power monitoring devices for measuring the basic electrical variables in low-
voltage power distribution. They are capable of single-phase, two-phase, or three-phase
measurement and can be used in two, three or four-wire TN, TT, and IT systems.
The power monitoring devices are designed for panel mounting. It is also possible to mount
them on a standard rail using the standard rail support brackets available as an option.
The power monitoring devices are suitable for installation in residential and industrial
environments.
Thanks to their large measuring voltage range, the devices can be directly connected in any
low-voltage system up to a rated voltage UL-N of 400 V. They can also be employed in
conjunction with voltage transformers to take measurements in medium- or high-voltage
systems.
x / 1 A or x / 5 A current transformers can be used to measure current.
The power monitoring devices have a large, graphical LC display on which all measured
variables are clearly visible. The four function keys combined with the multi-language
plaintext displays make intuitive user guidance possible. The experienced operator can also
use direct navigation for quicker selection of the desired display menu.
The power monitoring devices have a range of useful monitoring, diagnostics and service
functions, a two-tariff active energy and reactive energy counter, a universal counter, and an
operating hours counter for monitoring the running time of connected loads.
PAC3120
The PAC3120 can be configured via the integrated RS485 interface. Measured data can be
exported for further processing.
The PAC3120 features:
●Two digital inputs
●Two digital outputs
The parameters can be set either directly on the power monitoring device or via powerconfig
via the RS485 interface.

Description
2.1 Features
14
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PAC3220
The PAC3220 has two identical Ethernet interfaces with integral switch. These can be used
to connect other Ethernet nodes to the network.
Two identical expansion module interfaces allow the connection of a further two optionally
available expansion modules. Expansion modules can be used to connect the power
monitoring device to another bus system or to expand its range of functions.
The PAC3220 features:
●Two digital inputs
●Two digital outputs
An optional expansion module can be installed to increase the available number of inputs
and outputs.
The parameters can be set either directly on the power monitoring device or via the
communication interface.
Measurement
●Measurement of all relevant electrical variables in an AC system
●Measurement of minimum and maximum values of all measured variables
●Averaging of all measured values directly on the device in two stages, which are
independent of each other and freely configurable (aggregation)
Counters and power demand
●A number of energy counters capture active energy, reactive energy, apparent energy for
off-peak and on-peak, import and export.
●Calculation and storage of the average value for active power and reactive power from
the last demand period to allow simple generation of load profiles using software.
Programmable demand period from 1 to 60 mins.
●Daily energy counter for active energy for each day of the preceding two months.
●Monthly energy counter for active energy for each month of the preceding two years.
●Configurable universal counter for counting limit violations and status changes at the
digital input or output, or for indicating the active energy or reactive energy of a
connected pulse encoder.
●Operating hours counter for monitoring the runtime of a connected load.
Display and operator control
●LC display
●Four control keys with variable function assignment
●LED with variable function assignment

Description
2.1 Features
PAC3120 and PAC3220
Equipment Manual, 10/2019, L1V30425208F-01 15
Software support
●SENTRON powerconfig, version 3.13 or higher
●SENTRON powermanager, version 3.6 or higher
Interfaces
PAC3120
●RS485 interface
●Two multifunctional integral passive digital inputs
●Two multifunctional integral digital outputs
PAC3220
●Two identical Ethernet interfaces
●Two multifunctional integral digital inputs
●Two multifunctional integral digital outputs
●Two slots for operating optional expansion modules1)
●RS485 (when a 7KM RS485 expansion module is used)
●PROFIBUS (when a 7KM PROFIBUS DP expansion module is used)
●Two optional modules, each with four active digital inputs and two digital outputs (when
4DI/2DO expansion modules are used)
1) The SENTRON PAC3220 supports two expansion modules. One of these may be a
communication module (e.g. 7KM Switched Ethernet PROFINET, 7KM PROFIBUS DP or
7KM RS485).
Memory
●Device parameter settings are permanently stored in the device memory.
●Extreme values (maximum or minimum) are permanently stored in the internal device
memory.
Values can be reset via SENTRON powerconfig, Modbus command or directly on the device
via the menu.
Behavior in the case of power failure and power restore
After a power failure, the device starts back at zero with the calculation of the power demand
of the total active power and total reactive power.

Description
2.1 Features
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Security
●Hardware write protection
●Password protection
●Device access control (IP filter) (PAC3220 only)
●Configurable Modbus TCP port (PAC3220 only)
●DHCP protocol included (PAC3220 only)
●SNTP protocol included (PAC3220 only)
●Lead seals can be attached
Using "Password protection" and "Hardware write protection", you can protect against write
access to the device settings. The protection takes effect in case of the following actions:
●Modify parameters in device
●Reset maximum
●Reset minimum
●Reset counter
●Reset device
●Reset device to factory defaults
●Reset password
●Update firmware on device
The data can be read without any restrictions.
Note
Activation of the hardware write protection
When the power monitoring device is connected to a network, it is recommended th
at the
hardware write protection is activated.

Description
2.2 Measuring inputs
PAC3120 and PAC3220
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2.2 Measuring inputs
Current measurement
NOTICE
AC current measurement only
The devices are not suitable for measuring direct current.
The devices are designed for:
●Measuring current of 1 A or 5 A for connecting standard current transformers. Each
current measuring input can take a continuous load of 10 A. Surge withstand capability is
possible for currents up to 100 A and a duration of 1 s.
Voltage measurement
NOTICE
AC voltage measurement only
The devices are not suitable for measuring DC voltage.
The devices are designed for:
●Direct measurement on the system or using voltage transformers. The measuring voltage
inputs of the devices measure directly via protective impedances. External voltage
transformers are required to measure higher voltages than the permissible rated input
voltages.
●Measuring voltage up to 400 V (347 V for UL) for all devices.
Connection types
Five connection types have been provided for connecting the devices in two-wire, three-wire
or four-wire systems with balanced or unbalanced load.
Table 2- 1 Available connection types
Short code
Connection type
3P4W
3 phases, 4 conductors
3P3W
3 phases, 3 conductors
3P4WB
3 phases, 4 conductors, balanced load
3P3WB
3 phases, 3 conductors, balanced load
1P2W
Single-phase AC
The input circuit of the device must correspond to one of the connection types listed. Select
the suitable connection type for the purpose.

Description
2.2 Measuring inputs
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Connection examples can be found in chapter Connection (Page 39).
NOTICE
The wrong system connection can cause irreparable damage to the devices.
Before connecting the device, make sure that the local power supply conditions match the
specifications on the rating plate.
The short code of the connection type must be entered in the device settings at startup. You
can find the instructions for parameterizing the connection type in chapter Commissioning
(Page 55).
Displaying the measured variables depending on the connection type
The table below shows which measured values can be represented depending on the
connection type.
Table 2- 2 Display of measured variables depending on the connection type
Measured variable
Connection type
3P4W
3P3W
3P4WB
3P3WB
1P2W
Voltage L1
✓
–
✓
–
✓
Voltage L2
✓
–
–
–
–
Voltage L3
✓
–
–
–
–
Voltage L1-L2
✓
✓
–
✓
–
Voltage L2-L3
✓
✓
–
✓
–
Voltage L3-L1
✓
✓
–
✓
–
Current L1
✓
✓
✓
✓
✓
Current L2
✓
✓
–
✓
–
Current L3
✓
✓
–
✓
–
Apparent power L1
✓
–
✓
–
✓
Apparent power L2 ✓– – – –
Apparent power L3
✓
–
–
–
–
Total apparent power ✓✓✓✓✓
Active power L1
✓
–
✓
–
✓
Active power L2
✓
–
–
–
–
Active power L3
✓
–
–
–
–
Total active power
✓
✓
✓
✓
✓
Reactive power L1 (VAR1)
✓
–
✓
–
✓
Reactive power L2 (VAR1)
✓
–
–
–
–
Reactive power L3 (VAR1)
✓
–
–
–
–
Total reactive power (VAR1)
✓
✓
✓
✓
✓
Power factor PF L1
✓
–
✓
–
✓
Power factor PF L2
✓
–
–
–
–
Power factor PF L3
✓
–
–
–
–