Siemens LOGO! CIM User manual

LOGO! CIM
LOGO! CIM
Operating Manual
10/2021
A5E51250518
-AA
Preface
Application and functions
1
Structure of the device
2
Security
3
Mounting and connecting
the device
4
Web-based configuration
5
Dimension drawing
6
Technical specifications
7
Technical support
A

Siemens AG
Digital Industries
Postfach 48 48
90026 NÜRNBERG
GERMANY
A5E51250518-AA
Ⓟ
09/2021 Subject to change
Copyright © Siemens AG 2021.
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.

LOGO! CIM
Operating Manual, 10/2021, A5E51250518-AA 3
Preface
Purpose of the documentation
This manual describes LOGO! communication interface module (CIM).
This manual supports you during the configuration, installation and operation of the
communication modules.
Product names and abbreviations
•CIM or device
In this document, the term "CIM" or "device" is also used instead of the full product name
"LOGO! CIM“. CIM is the abbreviation for Communication Interface Module.
Use of the device
Please observe notes marked as follows:
Note
A note contains important information on the product described in the documentation, on
the handling of the product or on the section of the documentation to which particular
attention should be paid.
Note
To prevent injury, read the manual before use.
The manual is delivered online, you can download the document from Central technical
support (https://support.industry.siemens.com/cs/ww/en/).
History
Edition
Comment
09/2021
First Edition

LOGO! CIM
4Operating Manual, 10/2021, A5E51250518-AA
Table of contents
Preface................................................................................................................................................... 3
1 Application and functions ..................................................................................................................... 6
1.1 Requirements for use........................................................................................................... 8
1.2 Universal Data Model........................................................................................................... 9
1.3 Accessories........................................................................................................................ 12
1.4 Application example .......................................................................................................... 13
1.4.1 Fill control ......................................................................................................................... 13
2 Structure of the device ........................................................................................................................ 15
2.1 Appearance of the device................................................................................................... 15
2.2 LEDs to display operation................................................................................................... 17
2.3 The "RESET" button ............................................................................................................ 18
2.4 Slots for SIM card and cellular module................................................................................ 18
3 Security................................................................................................................................................ 19
3.1 Security information .......................................................................................................... 19
3.2 Data protection.................................................................................................................. 19
3.3 Important notes on using the device .................................................................................. 20
4 Mounting and connecting the device ................................................................................................. 23
4.1 Mounting the device.......................................................................................................... 23
4.1.1 Mounting position ............................................................................................................. 23
4.1.2 DIN rail mounting .............................................................................................................. 25
4.1.3 Wall-mounting................................................................................................................... 26
4.2 Connecting the device ....................................................................................................... 27
4.2.1 Notes on connecting.......................................................................................................... 27
4.2.2 Connecting the power supply and function earth ............................................................... 28
4.2.3 Connecting the LAN interface ............................................................................................ 30
4.3 Installing expansion modules............................................................................................. 30
4.3.1 Open the device ................................................................................................................ 30
4.3.2 Installing the SMA connector ............................................................................................. 33
4.3.3 Insert the SIM card............................................................................................................. 34
4.3.4 Installing the Cellular module............................................................................................. 36
4.3.5 Connecting the antenna .................................................................................................... 38
5 Web-based configuration .................................................................................................................... 40
5.1 Security recommendations ................................................................................................ 40
5.2 Downloading and installing the certificate.......................................................................... 41
5.2.1 Overview........................................................................................................................... 41
5.2.2 Installing the certificate for Windows ................................................................................. 42

Table of contents
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Operating Manual, 10/2021, A5E51250518-AA 5
5.2.3 Installing the certificate for Mac OS.................................................................................... 43
5.2.4 Installing the certificate for Linux ....................................................................................... 43
5.3 Accessing web-based configuration from PC....................................................................... 44
5.4 Web pages......................................................................................................................... 46
5.4.1 Layout of CIM .................................................................................................................... 46
5.4.2 LAN settings ...................................................................................................................... 47
5.4.3 Device information ............................................................................................................ 47
5.4.4 Contacts ............................................................................................................................ 48
5.4.5 Data management ............................................................................................................. 49
5.4.5.1 Variables ........................................................................................................................... 49
5.4.5.2 Messages........................................................................................................................... 50
5.4.5.3 Data Binding...................................................................................................................... 52
5.4.6 Protocol Settings................................................................................................................ 55
5.4.6.1 Overview for multi-protocol ............................................................................................... 55
5.4.6.2 S7...................................................................................................................................... 55
5.4.6.3 Modbus TCP....................................................................................................................... 59
5.4.6.4 Modbus RTU ...................................................................................................................... 62
5.4.6.5 RESTful API ........................................................................................................................ 64
5.4.7 Cellular and GNSS .............................................................................................................. 67
5.4.7.1 Cellular status.................................................................................................................... 67
5.4.7.2 Cellular settings................................................................................................................. 68
5.4.7.3 GNSS settings .................................................................................................................... 69
5.4.8 Security ............................................................................................................................. 69
5.4.8.1 Protocol............................................................................................................................. 69
5.4.8.2 Certificates ........................................................................................................................ 70
5.4.9 System settings ................................................................................................................. 73
5.4.9.1 Time settings..................................................................................................................... 73
5.4.9.2 Power on/off SMS .............................................................................................................. 75
5.4.9.3 Change password .............................................................................................................. 75
5.4.9.4 System reset...................................................................................................................... 75
5.4.9.5 System configuration management.................................................................................... 76
5.4.9.6 System upgrade................................................................................................................. 77
6 Dimension drawing ............................................................................................................................. 78
7 Technical specifications....................................................................................................................... 79
7.1 Technical specification ....................................................................................................... 79
7.2 Certificates and approvals .................................................................................................. 80
A Technical support ................................................................................................................................ 87
A.1 Service and support ........................................................................................................... 87
A.2 Troubleshooting ................................................................................................................ 87
Index .................................................................................................................................................... 90

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6Operating Manual, 10/2021, A5E51250518-AA
Application and functions
1
LOGO! CIM provides Internet connection solution for LOGO! BM which has more and more
capabilities to interact with Internet now.
General introduction
Universal Data Model (UDM)
LOGO! BM and Modbus RTU compatible devices can map their process data to UDM. UDM
acts as a data center for LOGO! CIM, and different protocols can exchange data through UDM.
4 ports switch
CIM can work as a LAN switch.
To ensure CIM work stably and efficiently, Siemens recommends that you should connect less
than 10 devices to CIM through Ethernet switch ports.

Application and functions
LOGO! CIM
Operating Manual, 10/2021, A5E51250518-AA 7
General gateway
LOGO! CIM can access the Internet with cellular module and SIM card installed. LOGO! BM or
Modbus RTU compatible devices can access the internet by connecting to LOGO! CIM.
Further functions
The CIM supports the following functions:
•Web-based configuration
A Web-based user interface (Web-based configuration) for the configuration of the CIM.
•Protocol gateway
LOGO! BM and Modbus RTU compatible devices can communicate with LOGO! CIM via
S7/Modbus protocol based on the Universal Data Model (UDM).
Application can access data through RESTful API on LOGO! CIM based on UDM.
•Data management
CIM can perform an action when a configured event is triggered.
–After configured, LOGO! CIM can perform an action, for example, change the data in
UDM, send one or more short messages to one or more contacts.
•Mobile cellular
With the CIM, you can establish a mobile data connection to a mobile cellular network.
•GNSS position
–Display the position information on the web page
–Enable/disable map the position data to UDM
•Time Server
–LOGO! CIM can act as an NTP server to provide time for LOGO! BM or other NTP client.
–LOGO! CIM can enable/disable mapping the time to the Universal Data Model (UDM).
Then the device without NTP can get the time via multi-protocol or RESTful API.
•Power on/off SMS
–CIM can send a power on/off SMS to one defined contact.
Web-based configuration
You can configure the CIM locally using a web-based configuration that can be displayed with
a Web browser. The web-based configuration provides the following functions:
•Configure the LAN of CIM
•Manage the contacts
•Configure variables, messages and data bindings
•Configure the multi-protocol
•Configure the cellular module
•Set the system time and synchronization of the CIM

Application and functions
1.1 Requirements for use
LOGO! CIM
8Operating Manual, 10/2021, A5E51250518-AA
•Configure the security functions
•Maintenance functions such as firmware update, device restart and factory reset
•Set the power on/off SMS for CIM
For more detailed information, refer to Web-based configuration (Page 40).
1.1 Requirements for use
Requirements for operation
•Cellular module (mini PCIe)
To operate the CIM in its entirety, you require a cellular module that is compatible to CIM
and the standard of the cellular network you are using. For more information, refer to the
section Slots for SIM card and cellular module (Page 18).
•Antenna and cables
Only use antennas from the accessories program for the CIM. For more information, refer
to the section Antennas (Page 38).
–Antenna for cellular
To access the cellular network, you require an antenna that is adapted to the standard
of the cellular network you are using.
–Antenna for GNSS
If you want to use GNSS, you require a suitable GNSS antenna.
•Mobile data contract with SIM card
To use the mobile data communication via the WAN interface of the CIM, you require a
contract with a suitable cellular network operator.
For more information on the contract and SIM card see below.
•Cellular network
To be able to use the cellular interface, there must be a cellular network within the reach
of the CIM.
•Data contract
For the following data services, you require a data contract with your mobile operator:
NTP, Cloud, HTTPS via cellular network
Power supply
You require a voltage source with a voltage between 12 VDC and 24 VDC that provides
adequate voltage or current. For more information, refer to the section Technical
specifications (Page 79).

Application and functions
1.2 Universal Data Model
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Operating Manual, 10/2021, A5E51250518-AA 9
SIM card
You require a SIM card of your mobile cellular operator.
Recommendations
Note the following recommendations for the cellular contract or for the SIM card:
•Where possible sign a cellular contract with a provider that makes all required functions
available.
To send SMS messages, the SIM card must be enabled this function and have a phone
number.
•Where possible sign a fixed cellular contract and do not use prepaid cards. A flat rate for
SMS and data can be recommended.
If, however, you want to use a prepaid card note the following:
–If your credit has been used up, the CIM does not send an automatic warning.
–You can query your current credit with your provider.
•Where possible, use a standard SIM card without an adapter.
•If the SIM card has been assigned a PIN code, you need to enter the PIN code in the page
"Cellular & GNSS -->Cellular status" of web-based configuration.
•The following access data for the cellular network must be present:
–Access Point Name (APN)
–Dial Number
For more information, refer to the section Cellular settings (Page 68).
Compatible cards
The card receptacle of the CIM for the SIM card is compatible with the following card formats:
•Mini SIM card, 25 x 15 mm (ISO/IEC 7810 ID-000)
1.2 Universal Data Model
“Universal Data Model (UDM)” allows compatible PLC devices map their process data to UDM
even if they use different communication protocols. UDM acts as a data center for LOGO!
CIM, and different protocols can exchange data through UDM.
Note
UDM uses Little Endian to store its multi-byte type data.

Application and functions
1.2 Universal Data Model
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10 Operating Manual, 10/2021, A5E51250518-AA
I, Q, M, V constructed a data model to simulate the process image in PLC.
Naming rule for the UDM address: address type + short data type + start address. No byte
alignment, for example, VW3 means the word consist of Byte 3 and Byte 4 in area V.
The UDM address is case insensitive.
Data type
(Short data
type)
Length Value range I
（512
Bytes）
Q
（512
Bytes）
M
（512
Bytes）
V
(W: 896 Bytes
R: 1024 Bytes)
bool (x)
1 bit
0 ~ 1
0.0-511.7
0.0-511.7
0.0-511.7
0.0-895.7
0.0-
1023.7
byte (b)
8 bit
0 ~ FF
0-511
0-511
0-511
0-895
0-1023
word (w)
16 bit
0 ~ FFFF
0-510
0-510
0-510
0-894
0-1022
double-word
(dw)
32 bit
0 ~ FFFFFFFF
0-508
0-508
0-508
0-892
0-1020
long-word (lw)
64 bit
0 ~ FFFFFFFFFFFFFFFF
0-504
0-504
0-504
0-888
0-1016
short-int (si)
8 bit
-128 ~127
0-511
0-511
0-511
0-895
0-1023
int (i)
16 bit
-32768 ~ 32767
0-510
0-510
0-510
0-894
0-1022
double-int (di)
32 bit
-2147483648 ~ 2147483647
0-508
0-508
0-508
0-892
0-1020
long-int (li)
64 bit
-9223372036854775808 ~
9223372036854775807
0-504
0-504
0-504
0-888
0-1016
Real (r)
32 bit
-3.4E38 ~ +3.4E38
0-508
0-508
0-508
0-892
0-1020
long-real (lr)
64 bit
-1.797E308 ~ +1.797E308
0-504
0-504
0-504
0-888
0-1016
short-unsigned
(su)
8 bit
0 ~ 255
0-511
0-511
0-511
0-895
0-1023
unsigned (u)
16 bit
0 ~ 65535
0-510
0-510
0-510
0-894
0-1022
double -
unsigned (du)
32 bit
0 ~ 4294967295
0-508
0-508
0-508
0-892
0-1020
long-unsigned
(lu)
64 bit
0 ~
18446744073709551615
0-504
0-504
0-504
0-888
0-1016

Application and functions
1.2 Universal Data Model
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Operating Manual, 10/2021, A5E51250518-AA 11
System variable
SV (System variable) is used to save some system data, such as, position, time, power state,
mini PCIe module information and so on.
Item Type Size Ad-
dress
comments Sample for Restful Inter-
face
Time
valid flag
bool
1 bit
896.0
Valid flag for the time value
/pi/rest/vx896.0
UNIX
timestamp
double un-
signed
4 bytes
897
Current time, seconds since 1970-1-1
00:00:00
Unit: second
/pi/rest/vdu897
year
unsigned
2 bytes
901
Current data, year
/pi/rest/vu901
month
short unsigned
1 bytes
903
Current data, month
/pi/rest/vsu903
day
short unsigned
1 bytes
904
Current data, month day
/pi/rest/vsu904
hour
short unsigned
1 bytes
905
Current time, hour
/pi/rest/vsu905
minute
short unsigned
1 bytes
906
Current time, minute
/pi/rest/vsu906
second
short unsigned
1 bytes
907
Current time, second
/pi/rest/vsu907
Position
valid flag
bool
1 bit
916.0
Valid flag for all the position value
/pi/rest/vx916.0
latitude
short int
1 byte
917
1: N; -1: S
/pi/rest/vsi917
short unsigned
1 byte
918
Latitude's degree
Unit: degree
/pi/rest/vsu918
short unsigned
1 byte
919
Latitude's minute
Unit: minute
/pi/rest/vsu919
short unsigned
1 byte
920
Latitude's second
Unit: second
/pi/rest/vsu920
real
4 bytes
921
Latitude's degree in float format
Unit: degree
/pi/rest/vr921
longitude
short int
1 byte
925
1: E; -1: W
/pi/rest/vsi925
short unsigned
1 byte
926
Longitude's degree
Unit: degree
/pi/rest/vsu926
short unsigned
1 byte
927
Longitude's minute
Unit: minute
/pi/rest/vsu927
short unsigned
1 byte
928
Longitude's second
Unit: second
/pi/rest/vsu928
real
4 bytes
929
Longitude's degree in float format
Unit: degree
/pi/rest/vr929

Application and functions
1.3 Accessories
LOGO! CIM
12 Operating Manual, 10/2021, A5E51250518-AA
1.3 Accessories
This chapter contains the scope of accessories valid at the time these operating instructions
were written. The following accessories are not included in the scope of delivery and can be
ordered separately.
Name
Description
Order number
Extended cable
Flexible connecting
cable preassembled
SIMATIC NET N-
Connect/SM male/male
1 m long
6XV1875-5LH10
2 m long
6XV1875-5LH20
5 m long
6XV1875-5LH50
Antenna
Antenna ANT 895-6ML, active GNSS antenna
6GK5895-6ML00-0AA0
Cylinder shaped antenna ANT 896-4ME for
GSM (2G), UMTS (3G) and LTE (4G), ANT896-
4ME
6GK5896-4ME00-0AA0
IRC antenna ANT 896-4MA for GSM (2G),
UMTS (3G) and LTE (4G),ANT896- 4MA
6GK5896-4MA00- 0AA3
Cellular module (mini-
PCIe card)
Telit LE910C1-EU LTE CAT-1 mPCIe
Telit LE910C1-AP LTE CAT-1 mPCIe
Telit LE910C1-NF LTE CAT-1 mPCIe
SIM7600G-H LTE CAT-4 mPCIe
*
* SIM7600G-H LTE CAT-4 mPCIe is not certified to be used in hazardous locations.

Application and functions
1.4 Application example
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Operating Manual, 10/2021, A5E51250518-AA 13
1.4 Application example
1.4.1 Fill control
Requirements for a fill system
This example illustrates a fill system. We want to monitor and control the whole system
anywhere through a web browser. We want to be informed with short message if the liquid
level is abnormal.
Setup
We need a CIM to connect the onsite devices. The onsite devices can be LOGO! BM or Modbus
RTU devices.

Application and functions
1.4 Application example
LOGO! CIM
14 Operating Manual, 10/2021, A5E51250518-AA
LWE project on AWS Could
For how to create and deploy a LWE project on AWS Cloud, refer to "LOGO! Web Editor Online
Help".
Set the CIM
Requirements
•Antenna (Page 38), SMA connector (Page 33), cellular module (Page 36) and SIM card
(Page 34) is installed.
Procedure
1. Downloading and installing the certificate (Page 41).
2. Accessing web-based configuration from PC (Page 44).
3. Configure the Cellular and GNSS (Page 67).
4. Configure the connection (Page 55) of CIM to the onsite device as you need.
5. Create a variable (Page 49) for the liquid level.
6. Create a contact (Page 48) for receiving the short message.
7. Create a message (Page 50) for informing the abnormal liquid level.
8. Bind the event (Page 52) "abnormal liquid level" with an action "send message".
Set the onsite device
To setup the communication from CIM and the onsite device, refer to the documentation for
onsite device and do the settings accordingly.

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Structure of the device
2
2.1 Appearance of the device
Front view
①
RESET button
②
X80 (L+, M, FE) Power supply connector
③
LED
④
FE terminal for shield cable
⑤
X20 (FE, A, B, C, D, E) Mutiplex serial interface
Top view
①
Holes for RF antenna

Structure of the device
2.1 Appearance of the device
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16 Operating Manual, 10/2021, A5E51250518-AA
Rear view
①
Mounting slides
②
Mounting interlock for DIN rail
Bottom view
①
4 × RJ45 Ethernet 10/100 Mbps

Structure of the device
2.2 LEDs to display operation
LOGO! CIM
Operating Manual, 10/2021, A5E51250518-AA 17
2.2 LEDs to display operation
The LEDs on the CIM provide information about the operating status of the device.
Meaning of the LEDs
LED
Status
Meaning
System diag-
nose (DIAG)
On
The LED light is green when CIM is in RUN mode.
On
CIM is booting or waiting for firmware update.
Flash
CIM is updating firmware.
On
Firmware is crashed.
Red flashing
CIM is powered by capacitor.
LAN (P1, P2, P3,
P4)
Flash
Port is receiving or sending data across Ethernet.
On
Port is already connected to Ethernet.
Off
No connection to Ethernet.
mPCIe
Off
The cellular module is not detected.
Flash
The cellular module is initializing or registering.
On
The cellular module has initialized and registered successfully.
Flash
The cellular module is receiving/sending data.

Structure of the device
2.3 The "RESET" button
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18 Operating Manual, 10/2021, A5E51250518-AA
2.3 The "RESET" button
The RESET button allows you to recovery the module to a factory default setting.
Operator input
Function
Keep pressing for longer than 10 seconds
Recovery the module to a default status
2.4 Slots for SIM card and cellular module
Both slots are behind the top housing.
Slot for the SIM card
Compatible cards
Mini SIM card, 25 x 15 mm (ISO/IEC 7810 ID-000)
Inserting the SIM card is described in the section Insert the SIM card (Page 34).
Slot for the cellular module
Compatible cellular modules:
GSM/GPRS
UTMS
LTE
Telit LE910C1-EU LTE CAT-1 mPCIe
Y
Y
Y
Telit LE910C1-AP LTE CAT-1 mPCIe
Y
Y
Telit LE910C1-NF LTE CAT-1 mPCIe
Y
Y
SIM7600G-H LTE CAT-4 mPCIe*
Y
Y
Y
*SIM7600G-H LTE CAT-4 mPCIe is not certified to be used in hazardous locations.
Card errors / diagnostics
Card errors are indicated by the "mPCIe" LED.
Inserting the card
Inserting the SIM card is described in the section Installing the Cellular module (Page 36).

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Operating Manual, 10/2021, A5E51250518-AA 19
Security
3
3.1 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 customers' exposure to
cyber threats.
To stay informed about product updates, subscribe to the Siemens Industrial Security RSS
Feed visit (https://www.siemens.com/industrialsecurity).
3.2 Data protection
Siemens observes the data protection guidelines, especially the requirements regarding data
minimization (privacy by design). This means the following for this SIMATIC product: The
product does not process / save any personal information, but only technical functional data
(e.g. time stamps). If the user links this data to other data (e.g. shift plans) or if the user saves
personal information on the same medium (e.g. hard disk) and therefore creates a personal
reference in the process, the user has to ensure meeting the guidelines regarding data
protection.

Security
3.3 Important notes on using the device
LOGO! CIM
20 Operating Manual, 10/2021, A5E51250518-AA
3.3 Important notes on using the device
The following safety notices must be adhered to when setting up and operating the device
and during all associated work such as installation, connecting up or replacing devices.
NOTICE
Open Equipment
When the device is used in the area of Industrial Control Equipment in accordance with
UL61010-2-201, the device is classified as "Open equipment".
Open equipment must be installed within an enclosure which protects you from hazards,
including mechanical hazards, electrical shock and spread of fire.
Note
Cleaning CIM
Requirement: The supply voltages on the CIM is switched off.
If you need to clean the devices, use dry ESD cleaning cloths (observing the ESD protective
measures).
Overvoltage protection
NOTICE
Protection of the external power supply
If power is supplied to the module or station over longer power cables or networks, the
coupling in of strong electromagnetic pulses onto the power supply cables is possible. This
can be caused, for example by lightning strikes or switching of higher loads.
The connector of the external power supply is not protected from strong electromagnetic
pulses. To protect it, an external overvoltage protection module is necessary. The
requirements of EN61000-4-5, surge immunity tests on power supply lines, are met only
when a suitable protective element is used. A suitable device is, for example, the Dehn
Blitzductor BVT AVD 24, article number 918 422 or a comparable protective element.
Notices on use in hazardous areas
Note
•
The equipment shall only be used in an area of pollution degree 2, as defined in IEC/EN
60664-1.
•
The equipment shall be installed in an enclosure that provides a minimum ingress
protection of IP 54 in accordance with IEC/EN 60079-0.
•
Transient protection shall be provided that is set at a level not exceeding 140 % of the
peak rated voltage value at the supply terminals to the equipment.