Chapter 2 Installation and Wiring|VFD-B Series

Terminal

Symbol

Terminal Function

Factory Settings (SINK)

ON: Connect to DCM

AFM

Analog output meter

ACM circuit

AFM

0~10V

potentiometer

Max. 2mA

internal circuit ACM

0 to 10V, 2mA

Impedance:

Output current

Resolution:

Range:

Function:

470Ω

2mA max

8 bits

0 ~ 10VDC

Pr.03-05

ACM

Analog control signal

(common)

Common for AVI, ACI, AUI, AFM

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:

C

ferrite core

AV I / A CI / A U I

ACM

wind each wires 3 times or more around the core

Digital inputs (FWD, REV, JOG, EF, TRG, 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, MO3, 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.

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Revision July 2008, BE16, SW V4.08 & V5.00