Instruction manual

14 i .LON 100 e3 Hardware Guide
The relay connections are implemented on screw terminals 5 through 8. The
SPST relay contacts are not polarity sensitive, and can be used to switch both AC
and DC loads. The relays require a minimum load of 5V at 5mA in order to avoid
low voltage contact pitting, and should therefore not be used to switch TTL level
signals.
Figure 1.6 shows the relay output screw terminals.
Figure 1.6
i .LON 100 Server Relay Screw Terminals
Table 1.4 lists the enclosure marking for each of the relay
connections.
Table 1.4
i .LON 100 Server Relay Connections
Screw Terminal Enclosure Marking Relay Connection
5 Output 1 Relay output 1
6 Output 1 Relay output 1
7 Output 2 Relay output 2
8 Output 2 Relay output 2
The dry contact relay outputs can be connected to a voltage source and a load.
When an On value is asserted, the circuit will be closed and the voltage source
will drive the load. This is shown in Figure 1.7.