YASKAWA V7 Technical Manual page 96

5.28 PID CONTROL
E. Feedback Loss Detection
n136: Feedback Loss Detection Selection
Setting Description
0 Feedback loss detection is disabled
1 Feedback loss detection is enabled –
2 Feedback loss detection is enabled –
n137: Feedback Loss Detection Level (PID)
n138: Feedback Loss Detection Delay Time (PID)
When feedback loss detection is enabled (n136 = data "1" or "2"), the drive will detect if the
feedback signal falls below the n137 level for more than the n138 delay time and respond according
to the setting of n136.
F. Multi-Function Input Terminals
n050 thru n056: Multi-function Inputs
By programming data "23" into one of the multi-function input parameters (n050 thru n056), the
corresponding multi-function input terminal (S1 thru S6) will disable the PID control. At the same
time the PID setpoint will become the output frequency and the PID's integrator will reset to zero.
n050 thru n056: Multi-function Inputs
By programming data "24" into one of the multi-function input parameters (n050 thru n056), the
corresponding multi-function input terminal (S1 thru S6) will immediately reset the integrator's value
to zero.
n050 thru n056: Multi-function Inputs
By programming data "25" into one of the multi-function input parameters (n050 thru n056), the
corresponding multi-function input terminal (S1 thru S6) will hold the integrator's output value.
When the contact is closed (on the Multi-Function Input Terminal), whatever value the integrator is
outputting will remain the same until the contact is opened.
Continued
(Term. S1 thru S6)
(Term. S1 thru S6)
(Term. S1 thru S6)
Factory setting: 0
Range: 0 to 2
alarm only (drive continues running)
fault (drive coasts to stop)
Factory setting: 0
Range: 0 to 100 %
Factory setting: 1.0
Range: 0.0 to 25.5
Data 23 : PID Control Off
Data 24 : PID Integral Reset
Data 25 : PID Integral Hold
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