Delta Electronics VFD-M Series, User Manual

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Chapter 4 Parameters
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Revision May 2008, ME14, SW V3.04 4-79
Pr. 122
PID Frequency Output Command limit
Settings 00 to 110 % Factory Setting: 100
This parameter sets a limit of the PID Command frequency. If this parameter is set to 20%,
then the maximum output frequency for the PID operation will be (20% x Pr.03).
Pr. 123
Feedback Signal Detection Time
Unit: 0.1sec
Factory Setting: 60.0
Settings 0.1 to 3600 sec
0.0 disable
This parameter defines the detection time for the loss of a feedback analog signal. The drive
will follow the operating procedure programmed in Pr.124 if the feedback signal is lost for more
than the time set in Pr.123.
Pr. 124
Feedback Signal Fault Treatment
Factory Setting: 00
Settings 00 Warning and RAMP to stop
01 Warning and keep operating
This parameter selects the operation of the drive upon a loss of the PID feedback signal.
Pr. 125
Source of PID Set point
Settings 0.00 to 400.0Hz Factory Setting: 0.00
This parameter is used in conjunction with Pr.115 (04) to input a set point in Hz.
Pr. 126
PID Offset Level
Settings 1.0 to 50.0 % Factory Setting: 10.0
This parameter is used to set the offset between set point and feedback.
Pr. 127
Detection Time of PID Offset
Settings 0.1 to 300.0 sec Factory Setting: 5.0
This parameter is used to set the detection time of PID offset.
Pr. 128
Minimum Reference Value
Unit: 0.1V
Settings 0.0 to 10.0 V Factory Setting: 0.0
This parameter is used to set the AVI input voltage that corresponds to minimum frequency.