Operating Instructions KBDi-USB Keyboards
Safety information
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R. STAHL HMI Systems GmbH / OI_KBDi_USB_en_V_01_00_07.docx / 28.09.2021
10.4 Safety information for operation
Operate the keyboard only if it is clean and undamaged. If the keyboard is in any way
damaged, do not touch it to avoid injury. In the case of any damage that may compromise
ingress protection (e.g. cracks, holes or broken components) the keyboard must be taken
out of commission immediately. Before the device is recommissioned the damaged
components must be replaced.
If you want to use the device in category 1D/2D/3D or EPL Da/Db/Dc, dust deposits of a
thickness exceeding 5 mm must be removed and you have to ensure that no high-energy
loading mechanisms at the operating surface of the keyboard (e.g. pneumatic particle
transport) occur during operation. The keyboard may not be used in environments where
propagating brush discharges may occur.
In case of non-compliance or contravention of the above explosion-protection is no longer
guaranteed and all warranty claims shall be null and void.
10.5 Special conditions
Equipotential bonding must be established for the external intrinsically safe circuits of the
accessories to be connected, e.g. display, keyboard or pointer device.
