Instruction manual

102
NETWORK VARIABLES
6.8.22 Event driven detection width (network input config SNVT_lev_percent
nciInvEvtDuty)
You can set the event driven detection width (varying width) of the monitor-related output network
variables.
A 100% value that will be the basis of the detection width varies with the network variables.
This setting can reduce traffic jams caused by occurrence of many send events due to consecutive value
changes.
⋅ Data acceptance timing........... At network variable receive (nv_update_occurs event)
Data Name Initial Value Range Increments
nciInvEvtDuty
0%
0.000% to 163.830% 0.005%/bit
Parameter Name
0.00 to 163.83% 0.01%
392 Event driven detection width
REMARKS
• Control can not be exercised at less than the minimum frequency resolution (0.01Hz) of the inverter.
• The value stored in the inverter is rounded up. For example, 1.005% is rounded up to 1.010%.
• When the inverter operation status has changed, e.g. from a stop to startup or from running to a stop, the monitor
value is output even when the value is within the event driven detection width.
(Example) when the output frequency monitor and Pr. 392 Event driven detection width = "100%",
Pr. 390 % setting reference frequency = "60Hz" (set frequency)
As the monitor is output once at starting from the stop status, the starting monitor output is 0.5Hz when the
starting frequency is set to 0.5Hz. Therefore, the second monitor output is equal to or more than "0.5Hz+60Hz
(Pr. 390 setting × Pr. 392 setting)" = "60.5Hz". (This is not the monitor output when the frequency reaches 60Hz.
Use the SU signal to detect output frequency, etc.)