YASKAWA SI-P3 Installation Manual page 45

Keypad Display
Cause
Communication wiring is faulty.
An existing short circuit or
communications disconnection
Programming error on the master
side.
Communication circuitry is
damaged.
Termination resistor of the
MEMOBUS/Modbus
communications is not enabled.
YASKAWA ELECTRIC TOBP C730600 82B YASKAWA AC Drive Option SI-P3 Installation Manual
Serial communication transmission error
CALL
Communication is not established.
• Check for wiring errors.
• Correct the wiring.
Check disconnected cables and short circuits and repair
as needed.
Check communications at start-up and correct
programming errors.
• Perform a self-diagnostics check
• If the problem continues, replace either the control
board or the entire drive. For instructions on
replacing the control board, contact Yaskawa or your
nearest sales representative.
Set DIP switch S2 to the ON position to enable the
termination resistor on a drive located at the end of a
network line.
Minor Fault Name
Possible Solution
8 Troubleshooting
Minor Fault
(H2- = 10)
YES
45