YASKAWA Varispeed V7 Instruction Manual page 219

Errors Indicated by the DeviceNet Communications
Indicators
The following table shows the errors indicated by the MS and NS indi-
cators on the Inverter, the likely causes of the errors, and the recom-
mended corrective actions.
Indicator Status
MS
Green
Red
Red
Green
or
Red
218
Meaning
NS
Power
supply
OFF
- Initializing
communi-
cations
- Recover-
able (non-
fatal) error
Irrecover-
able (fatal)
error
Communi-
cations
timeout
Red
Cause
Power is not being
supplied to the
Inverter.
There is an incor-
rect baud rate set-
ting or there is a
MAC ID duplication.
There was a non-fa-
tal error.
A fatal error related
to communications
occurred.
A communications
timeout occurred
with the Master.
Corrective Action
Check the Inverter's
main circuit wiring and
turn ON the power.
Correct the baud rate or
MAC ID setting and turn
ON the Inverter's power
again. Replace the
Inverter if the problem
recurs.
Replace the Inverter if
the problem recurs.
Turn ON the Inverter's
power again. Replace
the Inverter if the prob-
lem recurs.
• Check that the termi-
nators are properly
connected to the
communications
line.
• Check that the com-
munications lines
are properly con-
nected. (Check for
cable damage and
bad connections.)
• Check that the com-
munications lines
are separated from
the main circuit wir-
ing.