OMRON Sysdrive 3G3HV - Detector Cooling Section

Set Values
• The parameters n086, n087, n088 adjust PID control response.
• Set n086, n087, and n088 to optimum values by operating the mechanical
system. Refer below, PID Adjustments for details.
• Proportional control or integral control will not be performed if n086 or
n087 is set to 0.0 and differential control will not be performed if n088 is
set to 0.00.
n089
PID Offset Adjustment
Setting range –109 to 109 Unit % (Maximum
frequency ratio)
Set Values
n090
Default setting
100
• The parameter n089 adjusts the PID control offset of the Inverter.
• The Inverter adjusts the offset of the voltage used to determine the set
point and the offset of analog input to the FI terminal according to the
value set with n089.
• Set n089 so that the output frequency of the Inverter will be 0 Hz when
the set point and feedback are both zero.
Integral Upper Limit
Setting range 0 to 109 Unit % (Maximum
frequency ratio)
Set Values
n091
Default setting
100
• The upper limit of integral control quotients is set with n090.
• It is usually unnecessary to change the default-set value of n090.
• Set n090 to a small value if the response of the Inverter may damage
the load or allow the motor to go out of control when the load factor of
the motor varies greatly.
• The feedback will not agree with set point if n090 is set to a value that is
too small.
PID Primary Delay Constant
Setting range 0.0 to 2.5 Unit s Default setting
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 Inverter
will be low.
0.0
n092
Feedback Loss Detection Selection
Setting range 0, 1 Unit --- Default setting
Set Values
Set
Description
value
0 Feedback loss is detected.
1 Feedback loss is not detected.
0