Omron SYSDRIVE 3G3MV User Manual page 42

Design
Communications method
RS-422
RS-485
D Selecting Frequency Reference Input Method
·By using pin 2 of SW2, voltage input or current input can be selected as the input
method for frequency reference. The default setting is for voltage input.
Parameter settings are required together with the selection of the frequency reference
input method.
Frequency reference input
method
Voltage input (default
setting)
Current input
Note Do not set pin 2 to ON for current input while voltage input is ON, otherwise the
resistor in the input circuit may burn out.
Set to ON
Set to ON only if the Unit is the end Slave.
120-W termination resistance (1/2 W)
Pin 1
Pin 2 setting
V (OFF)
I (ON)
Chapter 2
Pin 1 setting
Frequency reference
selection (parameter n004)
Set value 2
Set value 3 or 4
2-19