54
YASKAWA
TOEP C730600 84A DeviceNet Installation Manual
Instance
Byte
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
2
Speed Actual (Low Byte)
3
Speed Actual (High Byte)
Instance
Byte
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
71
DeviceNet
Extended
Speed
Control
0
At Speed
Ref from
Net
Ctrl from
Net
Ready
Running
2 (REV)
Running
1 (FWD)
Warning
Fault
1
State
2
Speed Actual (Low Byte)
3
Speed Actual (High Byte)
8
Troubleshooting
◆
Drive-Side Error Codes
Drive-side error codes appear on the drive keypad.
lists causes of the
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
Causes
Possible Solutions
bUS
Option
Communication Error
The drive did not receive a
signal from the controller.
The communications cable
wiring is incorrect.
•
Check for wiring errors.
•
Correct the wiring.
An existing short circuit or
communications disconnection
Check disconnected cables and short
circuits and repair as needed
