Use; Intended Use; Improper Use; Intended Use Of The Exta3 Keyboard - Pepperl+Fuchs EXTA3 Series Manual

EXTA3* Keyboard
Safety
1.8

Use

1.8.1

Intended Use

The device is only approved for appropriate and intended use. Ignoring these instructions will
void any warranty and absolve the manufacturer from any liability.
The device must only be operated in the specified ambient temperature range and at the
specified relative humidity without condensation.
When using stranded conductors, crimp wire end ferrules on the conductor ends.
1.8.2

Improper Use

Protection of the personnel and the plant is not ensured if the device is not used according to its
intended use.
1.9

Intended Use of the EXTA3 Keyboard

EXTA3 is a PC keyboard with an optional operating element for mouse functions (capacitive or
resistive touch pad, mechanical and optical trackball mouse, joystick). The keyboard has USB
interfaces for intended use in hazardous areas, Class I/Division 2, Class II, Division 2, and
ATEX Zone 2 and Zone 22 areas according to ATEX Directive 2014/34/EU and IECEx. The
USB interfaces of the keyboard and the operating element for mouse functions are separate,
intrinsically safe circuits. Both intrinsically safe circuits are routed to the outside via one or two
separate connection cables. The connection cable corresponds to type "B" in accordance with
IEC 60079-14, Section 12.2.2.8. The cable must be secured and protected effectively against
damage. The EXTA3 keyboard must not be installed in locations where corrosive media are
used.
To prevent discharges, the keyboard may only be installed in areas with a low risk of strong
electrostatic charges caused by dust. To prevent electrostatic charge, foils must not cover or be
stuck onto the keyboard.
The keyboard must not be exposed to direct sunlight.
When connecting keyboard EXTA3 to a VisuNet RM/PC, ensure that the USB connection is not
changed during operation. The keyboard cable must be connected when it is in a de-energized
state.
If circuits with type of protection Ex i are operated with non-intrinsically safe circuits, they must
no longer be used as circuits with type of protection Ex i.
Standalone applications require an I.S. barrier based on the Entity concept. Pepperl+Fuchs'
model number for this I.S. barrier is SK-PC-D2-UU1-10-HS.
1.10

Symbols Used

Safety-Relevant Symbols
Danger!
This symbol indicates an imminent danger.
Non-observance will result in personal injury or death.
Warning!
This symbol indicates a possible fault or danger.
Non-observance may cause personal injury or serious property damage.
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