Delta Electronics AC Motor Drive VFD007S23A User Manual page 39

Chapter 2 Installation and Wiring|VFD-S Series
Terminal
Symbol
Analog voltage Input
(AVI/ACI)
AVI
Control signal wiring size: 18 AWG (0.75 mm
Analog input terminals (AVI, GND)
Analog input signals are easily affected by external noise. Use shielded wiring and keep
it as short as possible (<20m) with proper grounding. If the noise is inductive, connecting
the shield to terminal GND can bring improvement.
If the analog input signals are affected by noise from the AC motor drive, please connect
a capacitor (0.1
Digital inputs (M0~M5, GND)
When using contacts or switches to control the digital inputs, please use high quality
components to avoid contact bounce.
2-26
Terminal Function
μ
F and above) and ferrite core as indicated in the following diagrams:
wind each wires 3 times or more around the core
Factory Settings (NPN mode)
ON: Connect to GND
0~+10V/4-20mA corresponds to 0-max.
operation frequency (Pr.01-00)
PID feedback signal
AVI input impedance: 100kohm
ACI input impedance: 250kohm
AVI
+10V
ACI
J1
AVI
GND
AVI
ACI
ACI
J1
GND
2
) with shielded wire.
AVI
C
GND
ferrite core
AVI circuit
Internal Circuit
ACI circuit
Internal Circuit
Revision August 2006, SE08, SW V2.61