Troubleshooting; Drive-Side Error Codes; Fault - YASKAWA SI-N3 Installation Manual

8 Troubleshooting

Instance Byte
2
3
Instance Byte
0
71
DeviceNet
1
Extended
Speed
2
Control
3
8 Troubleshooting
◆

Drive-Side Error Codes

Drive-side error codes appear on the drive keypad.
errors and possible corrective actions. Refer to the drive Technical Manual for additional
error codes that may appear on the drive keypad.
■

Fault

Both bUS [Option Communication Error] and EF0 [Option Card External Fault] can
appear as a fault. When a fault occurs, the keypad ALM LED stays lit. When an alarm
occurs, the ALM LED flashes.
If communication stops while the drive is running, use these questions as a guide to help
remove the fault:
• Is the option properly installed?
• Is the communication line properly connected to the option? Is it loose?
• Is the PLC program working? Is the controller/PLC CPU stopped?
• Did a momentary power loss interrupt communications?
Code Name
Option
bUS
Communication Error
54
Bit 7 Bit 6
Bit 7 Bit 6
At Speed Ref from Ctrl from
Net
The drive did not receive a
signal from the controller.
The communications cable
wiring is incorrect.
An existing short circuit or
communications disconnection
Bit 5 Bit 4 Bit 3
Speed Actual (Low Byte)
Speed Actual (High Byte)
Bit 5 Bit 4 Bit 3
Running
Ready
Net 2 (REV)
State
Speed Actual (Low Byte)
Speed Actual (High Byte)
Fault on page 54
Causes
• Check for wiring errors.
• Correct the wiring.
Check disconnected cables and short
circuits and repair as needed
YASKAWA TOEP C730600 84A DeviceNet Installation Manual
Bit 2 Bit 1
Bit 2 Bit 1
Running
Warning
1 (FWD)
lists causes of the
Possible Solutions
Bit 0
Bit 0
Fault