Hitachi WJ200 Series

3−18
TIP: The deadband feature is useful in applications that requires a very stable output
frequency but use an analog input for the speed reference. Example application: A
grinding machine uses a remote potmeter for operator speed input. After a setting
change, the grinder maintains a very stable speed to deliver a uniform finished surface.
EzSQ Related Settings
The WJ200 series inverter has capability to execute EzSQ program like SJ700 series
inverters. Parameters A017 is for the EzSQ performance. Please refer to the EzSQ
section for the detailed explanation.
Noise spikes
Speed increase given
A
nalog input
16-sample avg.
0
+0.1
-0.1
Threshold exceeded
Deadband
New deadband
0
+0.1
-0.1
Output freq.
reference
Hz
Small step change
t
A016=31