NF DP420LS Instruction Manual page 241

9. Troubleshooting
ID Message
69 Polyphase Connection
Updated
70,
71
75 Calibration Data Error SH
77 USB Memory Connected
78 USB Memory
Disconnected
82 Sequence Compile Error
83 Simulation Compile Error
84 System Updated Please
Reboot
85 System Updated Please
Reboot
87 Unbalanced Line Voltage
-200 EXECUTION ERROR
222
Table 9-2 Error Message List (Continued)
Protection type
Message
display only
Icon
display
Message
display only
Message
display only
Message
display only
Message
display only
Message
display only
System Lock
System Lock
System Lock
Message
display only
Cause or Necessary action
A phase configuration is detected that is
different from the previous one.
The power unit or the system has not
been adjusted.
The adjustment data is abnormal.
A USB memory was inserted.
The USB memory eject operation was
performed, and thus the USB memory
can be removed now.
Sequence compilation failed.
Simulation compilation failed.
The firmware was updated.
The firmware was updated.
In the polyphase system, there is a
cabinet with a different power supply
voltage. Use the same power supply
voltage.
The panel operation (or remote
command) could not be executed.
PROGRAMMABLE AC POWER SOURCE