2-19
Communications method Pin 1 setting
RS-422 Set to ON
RS-485 Set to ON only if the Unit is the end Slave.
120-W termination resistance (1/2 W)
Pin 1
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.
Parametersettingsarerequiredtogetherwith theselectionofthefrequencyreference
input method.
Frequency reference input
method
Pin 2 setting Frequency reference
selection (parameter n004)
Voltage input (default
setting)
V (OFF) Set value 2
Current input I (ON) Set value 3 or 4
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.
Design Chapter 2
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