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3.3 Operation
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3.3 Operation
The operation modes will be explained as follow. Also parameter definitions for specific
DeviceNet parameters are described.
3.3.1 Operation modes
PU operation mode
Control of the inverter is from the parameter unit (PU).
DeviceNet operation mode
Control of the inverter is via commands from a DeviceNet master.
Operation mode selection
The following conditions must be met before a mode change can be effected:
!
Inverter is stopped.
!
Forward and reverse commands are off.
3.3.2 Functions available in the operation modes
The functions of the inverter depend upon the operation mode. The following chart
indicates the available commands according to the inverter operation mode.
Operation mode
Control type Command type
DeviceNet PU
Operation command Yes No
Output frequency setting Yes No
Monitor Yes Yes
Parameter write
Yes (Note 2)
(while stopped)
No
(Note 2)
Parameter read Yes Yes
DeviceNet
Inverter reset Yes (Note 1) No
Operation command No No
Output frequency setting No No
External
terminals
Inverter reset Yes Yes
Note: 1. The inverter cannot be reset if a communication error occurs.
2. As set in Pr. 77
3. When the parameter unit (FR-PU04) is used, the external terminals are used
for control of the inverter. The inverter does not have terminals for direct
control of operation commands or frequency setting.
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