Delta Electronics AC Motor Drive VFD-VE Series - Manual (Page 37)

Chapter 2 Installation and Wiring|
2-14 Revision August 2008, 03VE, SW V2.04
Terminal
Symbol
Terminal Function
Factory Settings (SINK)
ON: Connect to DCM
AFM
Analog output meter
AFM
ACM
0~20mA
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
ACM
Analog control signal
(common)
Common for AVI, ACI, AUI, AFM
*Control signal wiring size: 18 AWG (0.75 mm 2 ) with shielded wire.
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:
C
AVI/ACI/AUI
ACM
ferrite core
wind each wires 3 times or more around the core
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.