Analog Input Terminals (Avi, Aci, Aui, Acm); Digital Inputs (Fwd, Rev, Mi1~Mi6, Dcm); Digital Outputs (Mo1, Mo2, Mcm) - Delta Electronics AC Motor Drive VFD-VE Series User Manual

Chapter 2 Installation and Wiring|
Terminal
Symbol
Analog output meter
AFM
Analog control signal
ACM
(common)
*Control signal wiring size: 18 AWG (0.75 mm

Analog input terminals (AVI, ACI, AUI, ACM)

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 ACM can bring improvement.
If the analog input signals are affected by noise from the AC motor drive, please connect
a capacitor and ferrite core as indicated in the following diagrams:

Digital inputs (FWD, REV, MI1~MI6, DCM)

When using contacts or switches to control the digital inputs, please use high quality
components to avoid contact bounce.

Digital outputs (MO1, MO2, MCM)

Make sure to connect the digital outputs to the right polarity, see wiring diagrams.
When connecting a relay to the digital outputs, connect a surge absorber or fly-back diode
across the coil and check the polarity.
2-14
Terminal Function
AFM
0~20mA
ACM
C
ferrite core
wind each wires 3 times or more around the core
Factory Settings (SINK)
ON: Connect to DCM
Impedance: 18.5kΩ (voltage output)
1.1mΩ (current output)
Output current 20mA max
Resolution: max. frequency corresponds to
0-10V
Range: 0 ~ 10V/0 ~ 20mA
Function: Pr.03-18
Switch: AFM switch, factory setting is 0-
10V
Common for AVI, ACI, AUI, AFM
2
) with shielded wire.
AVI/ACI/AUI
ACM
Revision August 2008, 03VE, SW V2.04