Safety instructions

The following safety instructions must be followed during installation and working with networks and the software.

Explosion protection

Device modification CX2900-0107 is mandatory for operation of the embedded PC in hazardous areas, zone 2/22. The device modification entails the modification and relocation of the device label and a factory-fitted retainer bracket for mechanically securing the connectors.

Tighten the screws of the DVI plugs and, if present, also the screws of the fieldbus plugs, in order to prevent the plugs slipping out. Only use RJ45 plugs with an intact latching lug. Use cable ties to secure the USB and RJ45 plugs to the retainer brackets.

The CXxxxx-N020 optional interface (audio interface) may not be used in hazardous areas.

The embedded PC must be installed in a housing, which ensures protection rating IP54 for gas according to EN 60079-15. A housing with protection rating IP54 is required for non-conductive dust. IP6X is required for conductive dust according to EN 60079-31.

Observe the temperature at the cable entry points into the housing. If the temperature during nominal operation is higher than 70 °C at the entry points or higher than 80 °C at the wire branching points, cables must be selected that are designed for these high temperatures and operation in hazardous areas.

Maintain the prescribed ambient temperature during operation. The permissible ambient temperature range during operation is -25 °C ... +60 °C.

Take measures to prevent the rated operating voltage exceeding 119 V through short-term interference voltages.

Switch off the power supply and ensure that no explosive atmosphere occurs when:

• bus terminals are connected or removed,
• the embedded PC is wired or cables are connected,
• the front flap is opened,
• the CFast card, MicroSD card or battery is replaced.

Mounting

• Never work on live equipment. Always switch off the power supply for the device before installation, troubleshooting or maintenance. Protect the device against unintentional switching on.
• Observe the relevant accident prevention regulations for your machine (e.g. the BGV A 3, electrical systems and equipment).
• Ensure standard-compliant connection and avoid risks to personnel. Ensure that data and supply cables are laid in a standard-compliant manner and ensure correct connection.
• Observe the relevant EMC guidelines for your application.
• Avoid polarity reversal of the data and supply cables, as this may cause damage to the equipment.
• The devices contain electronic components, which may be destroyed by electrostatic discharge when touched. Observe the safety precautions against electrostatic discharge according to DIN EN 61340-5-1/-3.

Working with networks

• Restrict access to all devices to an authorized circle of persons.
• Change the default passwords to reduce the risk of unauthorized access.
• Protect the devices with a firewall.
• Apply the IT security precautions according to IEC 62443, in order to limit access to and control of devices and networks.

Working with the software

• The sensitivity of a PC against malicious software increases with the number of installed and active software.
• Uninstall or disable unnecessary software.

Further information on the safe handling of networks and software can be found in the Beckhoff Information System:
http://infosys.beckhoff.com