4.2 Special Operation
4-27
Chapter 4 OPERATION
4.2.3 External run/frequency command
By factory default, the run and frequency commands are sourced from the keypad ( and keys).
This section provides other external command source samples; an external potentiometer (variable
resistor) as a frequency command source and external run switches as run forward/reverse command
sources.
(1) Configure the function codes as listed below.
Table 4.2-2
Function
Code
Name Data Factory default
f 01
Frequency command 1 1: Analog voltage input to terminal [12] 0
f 02
Operation method 1: External digital input signal 2
e 98
Terminal [FWD] function 98: Run forward command "FWD" 98
e 99
Terminal [REV] function 99: Run reverse command "REV" 99
If terminal [FWD] and [REV] are ON (short-circuit), the F02 data cannot be changed. First
turn those terminals OFF and then change the F02 data.
(2) Wire the potentiometer to terminals across [13], [12], and [11].
(3) Connect the run forward switch between terminals [FWD] and [CM] and the run reverse switch
between [REV] and [CM].
(4) To start running the inverter, rotate the potentiometer to give a voltage to terminal [12] and then turn
the run forward or reverse switch ON (short-circuit).
For precautions in wiring, refer to Chapter 2 "INSTALLATION AND WIRING."
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