Chapter 2 Installation and Wiring|
2-12 Revision July 2008, EG03, SW V1.06
Terminal
Symbol
Terminal Function Factory Settings
+12V/ACM Potentiometer power source +12Vdc 20mA (Variable Resistor: 3~5KΩ)
AI1 Analog voltage/current Input
0~10V/0~1A correspond to 0~Max. operation frequency
Resolution: 10 bits
Function: Pr.04-05 ~ Pr.04-25
AI2 Analog voltage/current Input
0~10V/0~1A correspond to 0~Max. operation frequency
Resolution: 10 bits
Funciton: Pr.04-05 ~ Pr.04-25
AC1/AC2 Analog control signal common Used as common for analog inputs.
NOTE: Control signal wiring size: 18 AWG (0.75 mm
2
) with shielded wire.
Analog inputs (AI1, AI2, AC1, AC2)
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 AC1/AC2 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
AI1/AI2
AC1/AC2
ferrite core
wind each wires 3 times or more around the core
Digital inputs (MI1~MI4, DCM, FWD, REV, EF)
When using contacts or switches to control the digital inputs, please use high quality
components to avoid contact bounce.
Relay outputs (RA1, RB1, RC1)
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.
