Yaskawa Varispeed 626M5 - Manual (Page 196)

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