C.5 Bypass Operations by BACnet
The bypass operations that can be performed by BACnet communication depend on parameter settings. This section explains
the functions that can be used and related parameter settings.
u
Observing the Bypass Operation
A controller can perform the following actions with BACnet communications at any time regardless of parameter settings:
• Observe bypass and drive status and control terminal status from a controller
• Read and write parameters
• Set and reset faults
• Set multi-function inputs.
Note:
Input settings from the input terminals S
o
and from BACnet communications are both linked by a logical OR operation.
u
Controlling the Bypass
Select an external reference and adjust the parameters in
accordingly to start and stop the drive or set the frequency
reference using BACnet communications.
Table C.1 Setting Parameters for Drive Control from BACnet
Reference Source
Parameter
Name
Required Setting
External Reference 1
Z1-07
Frequency Reference Select
2
Z1-08
Run Command Select
2
Refer to Z1-07: Speed Reference Select on page 196
Refer to Z1-08: Run Command Select on page 197
for details on
external reference parameter selections.
C.5 Bypass Operations by BACnet
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YASKAWA ELECTRIC SIEP YAIZ1B 01E YASKAWA AC Drive – Z1000 Bypass Technical Manual
