Yaskawa F7 Drive Programming Manual - Manual (Page 109)

Programming 101
Function: Stall Prevention Level
Setting: 8
Stall prevention level allows the analog input to change the stall prevention level during run (L3-06) as a percentage of the set
value. Either the analog input stall prevention level or L3-06 setting, whichever is lower, becomes effective.
Fig. 70 Stall Prevention Level
Function: Reference Lower Limit
Setting: 9
Reference lower limit allows the analog input to adjust the frequency lower limit level as a percentage of maximum output frequency
(E1-04). This works in conjunction with frequency reference lower limit d2-02. Either the analog input reference lower limit level or
d2-02 setting, whichever is greater, becomes effective.
Function: Jump Frequency
Setting: A
Jump Frequency allows the analog input to set a fourth jump frequency level in addition to jump frequency 1, 2, and 3 (d3-01,
d3-02, and d3-03, respectively) as a percentage of maximum output frequency (E1-04).
Function: PID Feedback
Setting: B
Configuring the analog input as PID feedback is a requirement of setting the Drive up for PID operation. The analog input is
the only source for feedback for PID operation though the setpoint can come from a number of different sources. Refer to the
section covering the PID parameters for more information regarding specifying the setpoint source.
Analog input gain and bias for terminals A2 (H3-10 and H3-11) and A3 (H3-06 and H3-07) can be used to configure the
analog input to match the signal from the Feedback Transmitter.
The U1-24 monitor (PID Feedback) can be used to check the PID Feedback level with the digital operator.
Function: PID Set Point
Setting: C
Setting the analog input to PID set point allows the analog input level to be the PID set point as a percentage of maximum
output frequency (E1-04). The frequency reference selected in parameter b1-01 no long becomes the PID set point.
Function: Frequency Bias 2
Setting: D
By setting the analog input to frequency bias 2, a bias signal to the active frequency reference set via A1, A2, or A3.
100%
-10V 10V 0
30%
3V
· Stall Prevention Level (setting: “8”)