Chapter 2 Installation and Wiring
VFD-EL-W
2-10
Terminal Symbol
Terminal Function Defaults (NPN mode) ON: Connect to DCM
RC Multi-function Relay Common
1.5A (N.O.) / 0.5A (N.C.) 240 V
AC
1.5A (N.O.) / 0.5A (N.C.) 24 V
DC
Refer to Pr.03.00 for programming
+10V Potentiometer Power Supply +10 V
DC
3 mA (Variable resistor 3–5 kΩ)
AVI
Analog Voltage Input
+10V
AVI circuit
Impedance: 47 kΩ
Resolution: 10 bits
Range: 0–10 V
DC
/4–20 mA =
0–maximum output frequency (Pr.01.00)
Selection: Pr.02.00, Pr.02.09, Pr.10.00
Setting: Pr.04.14–Pr.04.17
ACM Analog Control Signal (Common) Common for AVI
Control signal wiring size: 18 AWG (0.75 mm
2
) with shielded wire.
Analog inputs (AVI, ACM)
Analog input signals are easily affected by external noise. Use shielded wiring and keep it as short as
possible (<20 m) with proper grounding. If the noise is inductive, connecting the shield to the ACM terminal
can cause improvement.
If the analog input signals are affected by noise from the AC motor drive, connect a capacitor (0.1
F and
above) and a ferrite core as shown in the following diagrams:
C
Wind each wire three times or more around the core
Digital inputs (MI1, MI2, MI3, DCM)
When using contacts or switches to control the digital inputs, use high-quality components to avoid contact
bounce.
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