TT-107IU Silicone Keyboard - Technical Documentation
15.05.2012 © E.L.B. Ex-Geraete Bachmann GmbH Page 7
Connection examples for supply by W...-Q
1. Gas areas
More information in the separate W...-Q manual.
Plugging and unplugging inside of hazardous gas areas is allowed because of
sufficiently low inner capacities.
2. Dust areas
USB sockets in dust atmosphere are not allowed, because the contacts are
not dust protected. (Danger of ignition of conductive dust.) But the keyboard
itself may be operated in dust areas:
Please find more connection possibilities in the USB sticks’ data sheets.
3. Order examples:
TT-107IU
Intrinsically safe USB
keyboard with mouse pad
and ca. 2.1 m cable
WR-Q 005 A
Intrinsically safe supply with
50 cm cable, flying leads
and attached USB plug
UClamp1
Connector for WR-Q 005 A
with clamping terminals
for the flying leads
Mounting example:
Safe area
PC
Hazardous area
Intrins. safe
supply
W...-Q
Keyboard TT-107IU
Safe area
PC
Hazardous
dust area
Intrins. safe
supply
W...-Q
Keyboard TT-107IU
