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2.3.
Connection To Network
(1) Upon completion of the installation procedure, the inverter should be at
rest with the power off. The option unit is mounted in the inverter with
the drop cable connected to the terminal block, but unconnected to the
network trunk cable. Set the node address on the two switches to a
number between 0 and 63. SW1 is the tens digit and SW2 is the ones
digit. Ensure that the number chosen is not already being used by
another station on the network including a master station. Any number
out of the range of 0 to 63 is changed to address 63 by the option unit
software.
Note:
The state of the Node Address switches are sampled once at
power on. Changing the Node Address later on will have no
effect and the software will keep the number read at power on.
Turn power off, readjust the switches, and turn power back on
to change the node address.
(2) It is now safe to apply power to the inverter and run it in PU or external
mode provided that any external inverter control cables not associated
with DeviceNet are installed correctly. If the trunk connector is a
DeviceNet sanctioned pluggable or sealed connector, the connection to
the active network can be made at any time whether inverter power is
on or off. The option unit automatically detects when the connection is
made. If connecting to the network with free wires, power to the
network and inverter should be shut off as a safety measure in case two
or more signal wires are accidentally shorted together.
2.4.
LED Status Indicator
(1) After connecting the drop cable to the trunk cable of the active network,
note the condition of the LED labeled MNS on the cover. The option
unit uses the Combined Module/Network Status LED scheme
proposed in the DeviceNet communications standard. The possible
states of this LED are as follows:
