Delta Electronics VFD-VE Series manual Afm, Acm, Analog input terminals AVI, ACI, AUI, ACM

Chapter 2 Installation and Wiring

Terminal	Terminal Function		Factory Settings (SINK)
Symbol				ON: Connect to DCM
	Analog output meter	Impedance:		18.5kΩ (voltage output)
				1.1mΩ (current output)
		Output current		20mA max
AFM		Resolution:		max. frequency corresponds to
				0-10V
	AFM	Range:		0 ~ 10V/0 ~ 20mA
		Function:		Pr.03-18
	0~20mA
		Switch:		AFM switch, factory setting is 0-
	ACM
				10V
ACM	Analog control signal	Common for AVI, ACI, AUI, AFM
	(common)

*Control signal wiring size: 18 AWG (0.75 mm2) 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:

AVI/ACI/AUI

C

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.

2-14 Revision August 2008, 03VE, SW V2.04