Stahl MT 7 Series, Руководство по эксплуатации

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Operating Instructions MT-xx7 Safety information
Page 26 of 44
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R. STAHL HMI Systems GmbH / OI_MT_xx7_en_V_01_02_14.docx / 06.12.2019
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A tick close to the X10 terminal indicates the voltage type (AC / DC). For the 24 VDC
types the cable cross-sections depend on the cable length of the voltage supply cable, as
follows:
Cable length in metres (ft) Cable cross-section in mm² (AWG)
max. 55 m (180 ft) 1.5 mm² (AWG16)
max. 90 m (295 ft) 2.5 mm² (AWG14)
max. 150 m (492 ft) 4 mm² (AWG12)
max. 225 m (738 ft) 6 mm² (AWG10)
max. 375 m (1230 ft) 10 mm² (AWG8)
max. 600 m (1968 ft) 16 mm² (AWG6)
If the cable's cross section is greater than the maximum possible for the terminals, the
cable needs to be routed according to regulations via a smaller cable cross section before
being inserted into the connection box (possibly using the Ex e terminal box).

If the intrinsically safe interfaces of an intrinsically safe device or a partially intrinsically
safe device are or have been connected to a not intrinsically safe circuit, the certification
ceases to apply and the device may no longer be operated as an intrinsically safe device.
After the device has been operated as intrinsically safe with a low level of protection (e.g.
an Ex ia device at an Ex ib interface), it may no longer be operated in applications for a
higher level of protection (e.g. ia).

If the device is being used in a dust atmosphere and must be replaced, the device or the
enclosure in which it is mounted must be disconnected from the mains first and then,
according to regulations, be left to cool down. Before opening the device or its enclosure
and whilst they are open, the environment must be kept dust-free so that no dust can
intrude into the inside of the enclosure. When mounting new components please ensure
that all seals are undamaged and fit tightly.

Before starting up the device you must ensure that it has been installed according to
regulations and that neither the device nor its cables are damaged.
The audio Interface (X105) can handle high voltage up to 100 V. For
installation and wiring the national standards must be observed and
a properly insulation needed to prevent a hazard.
10.2.1 Only for HMI devices with DVI3

The USB interfaces of the MT-6x7-DVI3 devices are only certified for the connection of
keyboards and pointer units from R. STAHL HMI Systems GmbH.
ATTENTION