9 Troubleshooting
YASKAWA ELECTRIC
TOBP C730600 59B V1000 Option SI-EM3/V Installation Manual
45
n
Minor Faults and Alarms
n
Option Fault Monitors U6-98 and U6-99
The option can declare error/warning conditions via drive monitor parameters on the drive
digital operator as shown in
Table 15 Option Fault Monitor Descriptions
Keypad Display
Minor Fault Name
CALL
Serial communication transmission error
Communication is not established.
Cause
Possible Solutions
Minor Fault
(H2-
= 10)
Communication wiring is
faulty.
• Check for wiring errors.
• Correct the wiring.
YES
An existing short circuit
or communications
disconnection
Check disconnected cables and short circuits and repair as needed.
Programming error on the
master side.
Check communications at start-up and correct programming errors.
Communication circuitry
is damaged.
• 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.
Termination resistor of
the MEMOBUS/Modbus
communications is not
enabled.
Set DIP switch S2 to the ON position to enable the termination resistor
on a drive located at the end of a network line.
Fault
Condition
Fault
Declared
Status Value
(U6-98/U6-99)
Description
No Fault
n/a
0
No faults
Force Fault
EF0
3
Network sent a message to force this node to the fault state
Network Link
Down
BUS ERROR
1200
No network link to the option
Connection
Time-out
BUS ERROR
1201
The control connection timer (F7-16) timed out
Duplicate IP
Address
BUS ERROR
1202
This node and at least one other node have the same IP address
Default MAC
Address
None
1203
Factory default MAC Address programmed into the option.
Contact a Yaskawa representative or the nearest Yaskawa sales
office for details.
