Connection To Network 9 - Mitsubishi Electric DeviceNet FR-E5ND Instruction Manual

2.4 Connection to Network
At this point the option unit should be installed in the inverter, the address switches properly set, the cable constructed and
the connector connected to the option unit through the option data port.
Do not connect cable to the network until told to do so.
!
1. Check that the inverter power is off.
2. Make sure that a terminating resistor is installed across each end (CAN(+) and CAN(-)) of the trunk cable, as shown in the
following diagram.
These resistors must meet the following requirements:
a) R = 121 ohms
b) 1 % metal film
c) 0.25 Watts
3. Connect the cable to the network as follows:
a) 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 is on or off. The option unit automatically detects when the connection is
completed.
b) If connecting to the network with free wires, power to the network and inverter should be shut off as a safety precaution
in case two or more signal wires are accidentally shorted together.
4. Check that all connections are completed and all necessary wires not associated with DeviceNet are connected to the
inverter unit as needed.
5. It is now safe to apply power to the inverter and run it in the PU or external mode.
CAUTION
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9
INSTALLATION