Yaskawa AC Drive Z1000 AC Drive HVAC Fan - Manual (Page 292)

D.5 Drive Operations by N2
The drive operations that can be performed by N2 communication depend on drive parameter settings. This section explains
the functions that can be used and related parameter settings.
u Observing the Drive Operation
A controller can perform the following actions with N2 communications at any time regardless of parameter settings (except
for H5-oo parameters):
• Observe drive status and drive 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 So and from N2 communications are both linked by a logical OR operation.
u Controlling the Drive
Select an external reference and adjust the parameters in Table B.1 accordingly to start and stop the drive or set the frequency
reference using N2 communications.
Table D.1 Setting Parameters for Drive Control from N2
Reference Source Parameter Name Required Setting
External Reference 1
b1-01 Frequency Reference Selection 1 2
b1-02 Run Command Selection 1 2
External Reference 2
b1-15 Frequency Reference Selection 2 2
b1-16 Run Command Selection 2 2
Refer to the User Manual for details on external reference parameter selections.
n Drive Functions
Each of the following functions must be enabled during start-up of the drive:
Start and Stop the Drive
Set the Run Forward Command (BO 1) to run the drive in the forward direction. Set the Run Reverse Command (BO 2) to
run the drive in the reverse direction. Run/Stop Monitor (BI 1) shows the current run status of the drive. Forward/Reverse
Monitor (BI 2) shows the current direction.
NOTICE: Damage to Equipment. Improper drive direction may damage HVAC equipment if parameter b1-04, Reverse Enable, is set to 0
(Enable).
Lock the Drive Panel
Locking the panel prevents the user from using the HAND and OFF keys locally at the drive panel. Panel Lock (BO 10) can
be commanded to lock and unlock the panel.
Digital Inputs
Multi-Function Input S3 (BO 5) through Multi-Function Input S7 (BO 9) are physical digital inputs on the drive. They can be
set either by external devices, such as limit or pressure switches, or by the network. Their function depends on how the drive
has been programmed. Refer to the User Manual section on Multi-Function Inputs (H1-03 through H1-07) for detailed
information on the use and programming of the multi-function inputs. The multi-function input status can be monitored through
Multi-Function Input 1 Monitor (BI 14) through Multi-Function Input 5 Monitor (BI 19). The Multi-Function Input # Monitor
state is the logical OR of the serial command value (BO 5 through BO 9) and the state of the external connection.
Note: The multi-function inputs can be set by both external devices or over the network. Use caution when connecting the multi-function inputs
to external devices to ensure correct system operation.
Digital Outputs
Multi-Function Output 1 (BI 10) through Multi-Function Output 3 (BI 12) are physical digital outputs on the drive. Their
function depends on how the drive has been programmed. Refer to the User Manual section on Multi-Function Outputs (H2-01
through H2-03) for detailed information on the use and programming of the multi-function outputs.
D.5 Drive Operations by N2
292 YASKAWA ELECTRIC SIEP YAIZ1U 03A YASKAWA AC Drive – Z1000 Programming Manual