YASKAWA VS-626M5 Instruction Manual page 196

Troubleshooting
12
Table 12.2 Inverter Faults (continued)
Fault No. Name
Control cir- Transmission between the Inverter
cuit fault 1 and the Digital Operator cannot be
(operator established until 5 seconds after
transmission supplying power. Built-in memory
error) fault, WDT activated.
Transmission between the Inverter
Control cir-
and the Digital Operator is estab-
cuit fault 2
lished once after supplying power,
(operator
but later transmission fault contin-
transmission
ues for more than 2 seconds. WDT
error)
time exceeded.
YENET1200
After turning control power ON,
communica-
NC machine and YENET1200 com-
tion signal
munication is not established.
delay
Contents Corrective Actions
S Insert the Digital Operator con-
nector again.
S Check the wiring of power sup-
ply signal line of 1CN.
S Replace the control PCB.
S Check the wiring of YE-
NET1200 communication line.
S Check NC machine power sup-
ply.
12 -12
Error Code
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