Delta Electronics AC Motor Drive VFD-EL - Manual (Page 149)

Chapter 4 Parameters|
4-106 Revision August 2008, 2ELE, V1.02
P
10.02
I
10.03
D
10.04
10.05
10.10
10.07
10.06
10.01
+
-
+
+
+
Setpoint
Input Freq.
Gain
PID
feedback
Integral
gain
l imi t
Output
Freq .
Limit
Digital
fi lter
Freq .
Co mman d
10.20 Treatment of the Erroneous PID Feedback Level
Factory Setting: 0
Settings 0 Keep operating
1 Coast to stop
2 Ramp to stop
3 Ramp to stop and restart after time set in Pr.10.21
In PID control mode, it will act according to Pr.10.20 when erroneous PID feedback level
occurs.
10.21 Restart Delay Time after Erroneous PID Deviation Level Unit: 1
Settings 1 to 9999 sec Factory Setting: 60
10.22 Set Point Deviation Level Unit: 1
Settings 0 to 100% Factory Setting: 0
10.23 Detection Time of Set Point Deviation Level Unit: 1
Settings 1 to 9999 sec Factory Setting: 10
When the deviation is less than Pr.10.22 (in the range of PID set point to Pr.10.22 X PID set
point) for a time exceeding the setting of Pr.10.23, the AC motor drive will decelerate to stop to
be constant pressure status (This deceleration time is the setting of Pr.01.12). The system will
be ready when the deviation is within the range of PID set point to Pr.10.22 X PID set point
during deceleration.