Omron SYSDRIVE 3G3HV SERIES User Manual

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Set Values
• The parameter n091 works as a low-pass filter for the PID control output.
• It is usually not necessary to change the default-set value of n091.
• If
the friction factor of the mechanical system is large and the mechanical system resonates, set n091
to a value larger than the resonance frequency , in which case, however , the PID response of the In -
verter will be low.
n092 Feedback Loss Detection Selection
Setting range 0, 1 Unit --- Default setting 0
Set Values
Set value Description
0 Feedback loss is detected.
1 Feedback loss is not detected.
• By setting n092 to 1, the Inverter determines that the feedback line is disconnected if the Inverter re -
ceives a feedback value that is too low.
• The
Inverter will have PID feedback loss output as multi-function output if the Inverter detects feed -
back loss. Therefore, program a sequence to interrupt the operation of the Inverter.
n093 Feedback Loss Detection Level
Setting range 0 to 100 Unit % (Maximum
frequency ratio)
Default setting 0
n094 Feedback Loss Detection Time
Setting range 0.0 to 25.5 Unit s Default setting 1.0
Set Values
• Set feedback loss detection conditions with n093 and n094.
• Feedback loss will be detected if the Inverter receives feedback values lower than the feedback loss
detection level set with n093 for the time set with n094.
• Set n093 to a value based on the maximum frequency set with n012 as 100%.
H PID Adjustments
D Step Response
The parameter values used by the Inverter to perform PID control can be adjusted according to the step
response of the control object.
1. Step Response Waveform
Take the following steps to measure the step response waveform of the control object.
a) Connect the load in the same way as the connection of the load to the Inverter in normal opera -
tion.
b) Set n084 to 0 so that the Inverter will not perform PID control.
c) Minimize the acceleration time and input step frequency reference.
d) Measure the response waveform of the feedback.
Preparing for Operation Chapter 3

Omron SYSDRIVE 3G3HV SERIES Specifications

General

Brand	Omron
Model	SYSDRIVE 3G3HV SERIES
Category	Inverter
Language	English