Silicone Keyboard TT-108 - Technical Documentation
19.03.2014 © E.L.B. Ex-Geräte Bachmann GmbH Page 4
IP codes
The marking may be IP66, IP68 and IP69k simultaneously, see certificate
sections (12) and (15), which means, that there are no different keyboard
versions for special IP codes. Meanings of the codes:
IP6...:
Dust proof, complete contact protection
IP...6:
Tall seas / strong water beam
IP...8:
Total immersion, for TT-108: 1 hour at 1 m below water surface
IP...9k:
Water beam from 4 directions with >80 bar und 80°C
Wall thickness is generally more than 5 mm, but much less around the keys
and the lamps. Even hardly visible damages may decrease the IP protection
here and make the dust protection become invalid. Please watch these areas.
Special Conditions ("X"):
Intrinsically Safe Supply and Data Transmission
TT-108 must be supplied by an Ex i interface with isolated (from the mains)
power and data lines, according to the above mentioned data for hazardous
areas. This is also valid for the dust protected version. We recommend TW-
100D for interface installation in the safe area or TW-100Dm for installation
inside of hazardous areas.
No plugging and unplugging inside of hazardous areas
because of possible discharging of hidden capacities.
Cleaning
Please clean the keyboard with a damp cloth or a soft brush. Cleaning only
outside of hazardous areas because of possible charging of the cleaning tool !
4
Electrical and Mechanical Data
-
Dimensions:
390 x 151 x 22 mm
-
Weight:
1280 g
-
Cable length: approx. 2 m
Signals und numbers
of the PS/2 plug
2
1(Data)
4 (VCC)
3(GND)
6
5(Clock)
Signals and
numbers of the
"Combicon" type
input plug of
Ex i interface
TW-100D
1
=
V
C
C
2
=
G
N
D
3
=
D
a
ta
4
=
C
lo
c
k
Summary of Contents for TT-108
Page 1: ...B EX GER TE 19 3 2013 TT 108 Technical Documentation...
Page 7: ......
Page 8: ......
Page 9: ......
