FHF ExResistTel IP2, Operating Instructions Manual

Page: 10 / 30

Page 10 Manual ExResistTel IP2
The preinstalled cable connection between terminal no. 5 and internal earth
connecting bolt of the metal plate is security relevant and must not be interrupted.
Caution
The air and the creepage distance at the terminals must not be reduced by the kind
of connection of the wires at these connection terminals.
1.4.6 Configuration Plug Connector
The 6 pin configuration plug connector must not be connected.
1.4.7 Intrinsically Safe Headset
Terminal no.: 1, 2, 3, 4
U
o
= 16.4 V
I
o
= 220 mA
P
o
= 450 mW
C
o
= 424 nF
L
o
/R
o
= 78 µH/Ω
The headset type MT53H79B-56 according NEMKO 02ATEX059X respects the
necessary connection requirements and can be used. The connection with other
headsets must be checked according the respective installation rules. The standard
IEC/EN 60079-25 must be respected.
1.4.8 Internal and External Earth and Potential Equalisation
Connecting Bolt PA
For this connection cables with a transversal section of 4 mm² to 6 mm² can be
used.
1.4.9 Voltaic Isolation
The supply DC, the supply PoE, the LAN interface and the intrinsically safe headset
are safety voltaic separated up a voltage of 250 V
eff
.