For your safety
CX51x0
9
Version: 1.9
2.2
Staff qualification
All operations involving Beckhoff software and hardware may only be carried out by qualified personnel with
knowledge of control and automation engineering. The qualified personnel must have knowledge of the
administration of the Embedded PC and the associated network.
All interventions must be carried out with knowledge of control programming, and the qualified personnel
must be familiar with the current standards and guidelines for the automation environment.
2.3
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 potentially explosive
atmospheres, 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.
WARNING
Operation without device modification
Without the CX2900-0107 device modification, the USB plug connectors may slip out of the
USB ports due to vibration, which may trigger a deflagration or explosion.
The Embedded PC must only be used with the device modification, and the USB plug con-
nectors must be secured to the retainer brackets with cable ties.
Tighten the screws of the DVI plug connector and, if present, also the screws of the fieldbus plug connectors,
in order to prevent the plug connectors slipping out. Only use RJ45 connectors with an intact latch. Use
cable ties to secure the USB plug connectors and RJ45 connectors to the retainer brackets.
The CXxxxx-N020 optional interface (audio interface) may not be used in potentially explosive atmospheres.
The Embedded PC must be installed in a housing, which ensures protection class IP54 for gas according to
EN 60079-15. A housing with protection class 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 potentially explosive
atmospheres.
Maintain the prescribed ambient temperature during operation. The permissible ambient temperature lies
within the range from 0 °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).
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