Delta VFD450C43S-21 - Page 563

Chapter 12 Descriptions of Parameter SettingsC2000 Plus
12.1-03-18

03-15
AVI Analog Input Filter Time

03-16
ACI Analog Input Filter Time

03-17
AUI Analog Input Filter Time
Default: 0.01
Settings 0.00–20.00 sec.
 Analog signals, such as those entering AVI, ACI and AUI, are commonly affected by interference
that affects the stability of the analog control. Use the Input Noise Filter to create a more stable
system.
 When the time constant setting is too large, the control is stable but the control response is slow.
When the time constant setting is too small, the control response is faster but the control may be
unstable. For optimal setting, adjust the setting based on the control stability or the control
response.

03-18
Analog Input Addition Function
Default: 0
Settings 0: Disabled (AVI, ACI, AUI)
1: Enabled
 When Pr.03-18 = 1:
Example 1: Pr.03-00 = Pr.03-01=1, Frequency command= AVI+ACI
Example 2: Pr.03-00 = Pr.03-01 = Pr.03-02 = 1, Frequency command = AVI+ACI+AUI
Example 3: Pr.03-00 = Pr.03-02=1, Frequency command = AVI+AUI
Example 4: Pr.03-01 = Pr.03-02=1, Frequency command = ACI+AUI
 When Pr.03-18=0 and the analog input selection settings (Pr.03-00, Pr.03-01 and Pr.03-02) are
the same, AVI has priority over ACI and AUI (AVI > ACI > AUI).
03-19
Signal Loss Selection for the Analog Input 4–20 mA
Default: 0
Settings 0: Disabled
1: Continue operation at the last frequency
2: Decelerate to 0 Hz
3: Stop immediately and display ACE
4: Operate with output frequency lower limit (Pr.01-11) and displays ANL
 Determines the treatment when the 4–20 mA signal is lost [AVIc (Pr.03-28 = 2) or ACIc (Pr.03-29
= 0)].
 When Pr.03-28 ≠ 2, the voltage input to AVI terminal is 0–10 V or 0–20 mA, and Pr.03-19 is invalid.