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6 Troubleshooting
CompoNet Communications Unit User’s Manual (I582-E1)
6-2
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Errors on a Communications Line
If the CompoNet Communications Unit cannot continue CompoNet communications due to interruption,
short circuit, reverse connection, node address duplication, superimposed noise, or other cause, a
transmission fault will be detected.
If a transmission fault occurs, the inverter turns ON the fault contact to stop the motor (free run stop).
In this case, check the LED indicator on the CompoNet Communications Unit and take corrective
action.
The CompoNet Communications Unit has the MS and NS LED indicators that indicate the states of the
power supply and communications.
: Lit,
: Flashing,
: Not lit
MS/NS LED Indicators in CompoNet Communications
Indicator
Name
Indication
Operation
State
Description
Corrective Action
Color State
MS
(Module
Status)
Green
Lit
Power ON
CompoNet Communications
Unit is operating normally.
–
Red
Lit
Fatal fault
• Hardware error occurred in
CompoNet Communica-
tions Unit.
• Unsupported inverter ver-
sion is used.
• Cycle inverter's input power
supply.
• Replace CompoNet Communi-
cations Unit.
• Replace the inverter with
another MX2-series, Ver. 1.1 or
later; or RX-series, Ver. 2.0 or
later.
Flashing Minor fault
Recoverable fault
• Node address is changed.
• Illegal Flexible Format con-
figuration
• CompoNet Communica-
tions Unit parameter is out
of range or write-prohibited.
• CompoNet Communica-
tions Unit detected consec-
utive communication errors.
Take the following actions and
cycle the power supply.
• Correct node address configu-
ration.
• Review Flexible Format config-
uration.
• Check and correct Remote I/O
settings and register numbers.
• Take environmental measures
such as noise isolation.
–
Not lit Power
OFF/Reset
• Power is not supplied to
inverter.
• Power is not supplied to
CompoNet Communica-
tions Unit because it is not
properly connected with
inverter.
• Unit is reset.
• Cycle inverter's input power
supply.
• Check CompoNet Communica-
tions Unit connector and turn
on inverter's input power sup-
ply.
• Replace CompoNet Communi-
cations Unit.
• Check and correct inverter's
reset input state or its setting
(C102).
Summary of Contents for 3G3AX-MX2-CRT-E
Page 94: ...3 Network Startup 3 36 CompoNet Communications Unit User s Manual I582 E1...
Page 118: ...4 Remote I O 4 24 CompoNet Communications Unit User s Manual I582 E1...
Page 134: ...5 Message Communications 5 16 CompoNet Communications Unit User s Manual I582 E1...
Page 167: ...I 1 I CompoNet Communications Unit User s Manual I582 E1 Index...
Page 171: ......