Chapter 2 Installation & Wiring
2-21
Terminal
Symbol
Terminal Function
Factory Settings (NPN mode)
ON: Connect to DCM
ACM
ACI
internal circuit
ACI circuit
Set-up:
Pr.04.15 ~ Pr.04.18
AFM
Analog output meter
AFM
ACM
0~10V
Max. 2mA
potentiometer
ACM circuit
internal circuit
0 to 10V, 2mA
Impedance: 100k
Ω
Output current
2mA max
Resolution: 8
bits
Range:
0 ~ 10VDC
Function:
Pr.03.03 to Pr.03.04
NOTE: Control signal wiring size: 18 AWG (0.75 mm
2
) with shielded wire.
Analog inputs (AVI, ACI, 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 (0.1
F and above) and ferrite core as indicated in the following diagrams:
C
AVI/ACI
ACM
ferrite core
wind each wires 3 times or more around the core
Digital inputs (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, 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.
