Mns Led (Operation Status Indication) - Mitsubishi Electric FR-A8ND Instruction Manual

NOTE
• Set the compatible mode switch before switching ON the inverter and do not change the setting while the power is
ON. Otherwise you may get an electric shock.
• Do not turn ON the switch 2 of the compatible mode switch.
1.3

MNS LED (operation status indication)

The MNS LED indicates the operating status of the option unit by its indication status.
Check the position of LED on
LED
Description
indicator
Inverter power OFF
Network power OFF
Cable disconnected
OFF
Own node only on the network
Different baud rate between the
inverter and master
Connection not established
Green
(Cable connection and network
(flickering)
power are normal.)
8
PRE-OPERATION INSTRUCTIONS
page 7.
Supply power to the inverter.
Supply power to the network.
Check for a DeviceNet cable disconnection, connector contact fault, and misplaced
terminating resistor.
Supply power to the master.
Set the same baud rate for the inverter (Pr.346) and master.
Check the node address setting (node address switches and Pr.345) of the inverter.
Set the master to the RUN mode.
Check that the size (number of bytes) of the I/O communication from the master matches
with that set in Pr.346 of the inverter. (For how to check the I/O communication size of the
master, refer to the Instruction Manual of the master device.)
Corrective action