FR-A5ND
DeviceNet
Communications Option Unit
15
4.1.2
External operation mode
Control of the VFD is by external signals connected to the VFDs terminal
block.
4.1.3
Network (computer link) operation mode
Control of the VFD is via commands from a DeviceNet master. However, FR-
A5ND-specific parameters 338 and 339 can be used to select external con-
trol for forward/reverse/stop and output frequency setting.
4.2
Operation Mode Selection
The following chart describes the required actions to change the operation
mode.
For all other mode changes, please consult FR-A500(L) Instruction Manual.
The following conditions must also be met before a mode change can be
effected:
· VFD is stopped
· Forward and reverse commands are off
Parameter 340 allows selection of network operation mode on power up and
after a drive reset.
Mode change
Required action
External operation
→
PU
operation
Press PU key on parameter
unit
PU operation
→
external
operation
Press EXT key on parameter
unit
External operation
→
network
operation
DeviceNet connection is
allocated
Network operation
→
external
operation
All DeviceNet connections are
released