Appendix C
Operating Instructions KB2 Keyboards
R. STAHL HMI Systems GmbH / OI_Keyboard_KB2_en_V_01_00_02.docx / 07.03.2022
Page 45 of 68
18 Appendix C
18.1 Proof of intrinsic safety
Proof of intrinsic safety for connection of KB2 keyboards with HMI devices with platforms MANTA
(ET-/MT-xx7) and SHARK (ET-/MT-xx8).
18.1.1
General information
Proof of intrinsic safety is given on the basis of the IEC/EN 60079-14 and the standards referred
to therein. In particular, we refer to Chapter 12 "Additional requirements for type of protection i -
intrinsic safety" in IEC/EN 60079-14.
Proof has been produced on the basis of the Certificate of Conformity according to
IEC/EN 60079- 0 and IEC/EN 60079-11 or the EC Type Examination Certificate according to the
2014/34/EU directive and the comparison of the safety-relevant data listed therein.
The following Type Examination Certificates were used:
Device
Type Examination Certificate
ET-xx7
— BVS 11 ATEX E 102 X
MT-xx7
— BVS 12 ATEX E 033 X
ET-xx8
—
BVS 14 ATEX E 134 X
MT-xx8
—
KB2 keyboards and assemblies
—
BVS 20 ATEX E 078 X
BVS 20 ATEX E 079 X
BVS 20 ATEX E 106 X
BVS 20 ATEX E 107 X
The relevant test body has listed
all
conditions applicable to intrinsic safety in the type
examination certificates.
For example, if a type examination certificate for a specific device only lists the applicable voltage
(Ui), this means that intrinsic safety is guaranteed for connections if the associated power supply
device does not exceed this voltage level (Uo is smaller than / equal to Ui).
Other output parameters defined in the test certificate of the power supply device (e.g. Io, Po) are
irrelevant to intrinsic safety concerns.
The data listed in this document
DO NOT
absolve the installers / operators of each
system from their duty and responsibility to observe the applicable statutory
requirements, directives and regulations. In any case, the associated due diligence
remains the responsibility of the installer and / or the operator !
