Yaskawa Profibus-DP Option Card CM061 - Manual (Page 17)

Installation 1-11
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LED Diagnostics
The following table presents the faults displayed by the LEDs on the communication option, their causes, and solutions.
Table 1.7 – LED Diagnostics
LED Display
PWR COM ERR WD
Content Cause Solutions
Power is not being supplied
from the drive.
• Check the main circuit wiring on the drive.
• Cycle drive power.
OFF OFF OFF OFF Power Off
Power is not being supplied to
the option unit due to poor
option unit connection.
• Turn of the drive power.
• Check the PROFIBUS-DP Option connection to the
2CN connector on the drive
• Cycle drive power.
Solid
Green
OFF
Solid
Red Solid
Red
CPU Error Option unit CPU error.
• Cycle drive power.
• Replace PROFIBUS-DP Option if fault persists.
Solid
Green
OFF
Solid
Red Flashing
Red
Drive Error Error in Drive unit.
• Cycle drive power.
• Replace PROFIBUS-DP Option if fault persists.
• Replace drive if fault persists.
Solid
Green
OFF
Flashing
Red Solid
Green
Com Error
A fault has occurred rendering
communication impossible.
• Check whether the address set in the PROFIBUS-DP
Master differs from the address of the option unit.
• Check that the master is functioning properly.
• Check that the termination resistor is correctly
connected to the communication line.
• Check whether the communication line is correctly
connected (disconnected or poor connection).
• Check that the communication line is separated from
the main power line.
Solid
Green Solid
Green Flashing
Red Solid
Green
Com Error
A fault has occurred rendering
communication impossible. • Check whether the address is duplicated with any other
devices on the PROFIBUS-DP network.
Solid
Green Solid
Green
OFF
Solid
Green
CPU Init Option unit under initialization
• Wait until WD LED is flashing
Solid
Green Solid
Green
OFF
Flashing
Green
Normal
Normal communication
possible.