Phoenix Contact 2700290, User Manual, Page: 17 / 154

Mounting and installation
8089_en_03 PHOENIX CONTACT
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2.2.2 Signal contact
The switch has a floating signal contact. An error is indicated when the contact is opened.
Figure 2-5 Basic circuit diagram for the signal contact
The indicated error states are configured in web-based management or via SNMP. For a list
of error states that can be configured, please refer to Section ““Diagnostics, Alarm Contact”
Menu” on page 44.
2.2.3 Assignment of the RJ45 Ethernet connectors
In the event of a non-redundant voltage supply, the switch indicates the voltage supply
failure by opening the signal contact. This error message can be prevented by connecting
the supply voltage to both terminal blocks in parallel, as shown in Figure 2-3, or by deac-
tivating redundant power supply monitoring in web-based management or via SNMP.
Table 2-1 Pin assignment of RJ45 connectors
Pin number 10Base-T / 10 Mbps 100Base-T / 100 Mbps
1 TD+ (transmit) TD+ (transmit)
2 TD- (transmit) TD- (transmit)
3 RD+ (receive) RD+ (receive)
4 - -
5 - -
6 RD- (receive) RD- (receive)
7 - -
8 - -
R1 R2
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