MEDC Ex ResistTel IP2 - Manual (Page 16)

Page 16 Manual ExResistTel IP2
If the Ethernet interface of the VoIP telephone is configured to the auto or auto-mdi
mode, the Rx and Tx pairs can be exchanged, because the telephone recognizes in
these cases receive and transmit automatically.
2.1.8 External Power Supply Connection
An external power supply can be connected to the terminals 16 (+) and 17 (-). The
external voltage DC 24 … 48 V will be necessary.
If an external power supply is in use, the LAN connection must not be connected to
PoE.
2.1.9 Relay Connection
The telephone has two relays with each a single switch at its proposal.
18 / 21
20 / 23
Figure 5: Terminal Assignment Relays of the Explosion proof VoIP
Telephone ExResistTel IP2 (Exposition: Relay not active)
terminal description
18 (relay 1) base contact relay 1
19 (relay 1) not used
20 (relay 1) switching contact relay 1
21 (relay 2) base contact relay 2
22 (relay 2) not used
23 (relay 2) switching contact relay 2
Table 2: Terminals of the Relays of the Explosion proof VoIP Telephone
ExResistTel IP2
The terminals of the relays are below a cover to be protected against random