Delta Electronics VFD-F Series manual Analog input terminals ACI1, ACI2, ACM, ACI 1/2, 3-10

VFD-F Series

Terminal Symbols	Terminal Functions	Factory Settings
+10V	Potentiometer power	+10V 20mA
	source
AVI	Analog voltage Input	0 to +10V correspond to Max. operation
		frequency
ACI 1/2	Analog current Input	4 to 20mA correspond to Max. operation
		frequency
AFM 1	Analog frequency	0 to 10V correspond to Max. operation
	/current meter 1	frequency
AFM 2	Analog frequency	4 to 20mA correspond to 2 times of output
	/current meter 2	current
ACM	Analog control signal
	(common)

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

Analog input terminals (ACI1, ACI2, 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:

ACI1/ACI2

C

ACM

ferrite core

wind each wire 3 times or more around the core

Digital inputs (FWD, REV, MI1~MI8, DCM)

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

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