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44
Network Control and Monitoring
Add network power – Many devices such as sensors and relays can be powered directly
from the network. However, inverters generally use much more power and a higher input
voltage than a network could provide. As demonstrated by the installation powerup test,
L100DN Series inverters need only the AC input power for stand-alone operation. For
network monitoring or control, you must also supply external +24V network power to
the DeviceNet connector. The inverter has internal optical isolation from the network,
and draws negligible network power as a result. DeviceNet specifications support up to
8A per network segment.
NOTE: Class II NEC Code limits the current for any network segment to 4A. DeviceNet
thick type cable is limited to 8A; thin type cable is limited to 3A.
Add a +24VDC supply to the network as shown below. It is not necessary to power it for
this step; later steps will provide powerup instructions..
DeviceNet Supply
Alternatively, you can use the auxiliary network power connector as shown below (left).
The inverter internally connects the two connectors to pass through network power.
Internal
connections
24VDC
+
–
Bus supply +
CANbus High
Drain
CANbus Low
Bus supply –
Bus supply +
Auxiliary network
power connector
L 3
2
1
P24 CM2 12 11
(Red)
(White)
(Bare)
(Blue)
(Black)
Bus supply –
L 3
2
1
P24 CM2 12 11
DeviceNet network
connector
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