ABB CSU-2LV, Installation And Maintenance Manual, Page: 11 / 84

ABB
ARC GUARD SYSTEM™ – CSU-2LV/2MV INSTALLATION AND MAINTENANCE GUIDE 11
2.4 Work in safety manner
Safe working methods must be used to prevent injuries.
The safety equipment must not be disengaged, bypassed
or in any other way modified so that the safety effect
ceases.
2.4.1 Handling the CSU-2
The CSU-2 may only be used for the purposes mentioned
in this manual. The CSU-2 was developed, manufactured,
tested and documented in accordance with applicable
safety standards. If you follow the instructions regarding
safety and use as described in this manual, the product
will, in the normal case, neither cause personal injury nor
damage to machinery and equipment.
To avoid malfunctions or damage through improper
handling, follow these instructions during transportation,
installation and maintenance:
• Transport with care. Do not drop, throw, or give the
CSU-2 a strong shock. It can cause breakage or failure.
• Handle with care. Do not drop, throw, or give the CSU-2
a strong shock. It can cause breakage or failure.
• The CSU-2 is installed by authorized personnel only.
• This manual is a part of the CSU-2 and should always
be accessible to personnel working with this product.
• Read and understand the manual thoroughly before
performing any installation or commissioning.
• CSU-2 is constantly sending light to the CSU input at
the Arc Monitor during normal conditions (for safety
and reliability reasons). The light might decrease over
time and should be checked every year by a manual
diagnostic test. See more information in chapter
Maintenance and in HMI functions.
• A log is kept that indicates if the light level had
decreased below a certain level. If so, the CSU-2 should
be replaced within the next 6 months.
• The safety of the system will not be affected if the
CSU-2 is not replaced. However, when the light level
becomes too low then the Arc Monitor will recognize
this as a high current situation. And then the system
functions as if there was a no current condition, that is,
trip on light at optical detectors only.
2.4.2 Storage
Storage in original package requires a temperature
range of between, -25 C° to +70 C° (-13F to + 158F) and a
humidity maximum 95%.
2.4.3 Limitation of liability
The safety information in this manual must not be
considered as a guarantee from ABB that the equipment
cannot cause accidents or injury, even if all the safety
instructions have been observed.
2.5 Security guidelines
2.5.1 Security disclaimer
This product is designed to be connected to and to
communicate information and data via a network
interface. It is your sole responsibility to establish and
maintain any appropriate measures (such as but not
limited to the installation of firewalls, application of
authentication measures, encryption of data, installation
of anti-virus programs, etc.) to protect the product, the
network, its system and the interface against any kind
of security breaches, unauthorized access, interference,
intrusion, leakage and/or theft of data or information.
ABB Ltd and its affiliates are not liable for damages
and/or losses related to such security breaches, any
unauthorized access, interference, intrusion, leakage and/
or theft of data or information.
2.5.2 Risk Mitigation and Secure
Deployment
To prevent equipment to operate in an unsafe or
undesirable manner due to malicious activities the
CSU-2 unit must be positioned in a trusted network,
strictly limited and in a hosted portion of a network or
control system. When a Serial to Ethernet Converter is
used, the user is responsible for creating a defence-in-
depth protection for each network by allocating firewall
solutions to the front of internal trusted networks of
each network by manage firewalls, their configurations
and access rules. For secure remote access, use a
VPN connection with an encryption layer to create a
secure channel over an insecure network. Separate the
management systems and connections to separate
network segments with all necessary cybersecurity
features on and deny all other connectivity mechanisms
from automation systems to restrict unauthorized
access. The user of the product should be aware that the
unsecure nature of the serial Modbus protocol exposes
the communication between the product and the control
system. Authentication and integrity of transmitted
information is not provided by the protocol. The main
security is provided through monitoring the cybersecurity,
topology (asset management) and correct operation of
the data networks using the cybersecurity monitoring
modules and features of the firewalls and managed
switches.
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