2
nd
Operation Mode
2
nd
Operation Mode is commonly refered to as Hand-Off-Auto switching or Local-Off-Remote
switching. The inverter can be operated (Start/Stop and Reference frequency) with two types of
operating modes and switch between them as required. The first Start/Stop source and Reference
Frequency source are set with parameters drv and Frq in the Operations group. The second
Start/Stop source and Reference Frequency source are set with parameters bA.04 and bA.05. A
digital input terminal set to 2nd Source will provide the switching input. Set the reference
frequency after switching between operating modes as the inverter will run at the selected
reference frequency.
Select one of the digital input terminals (P1~P5) and set the corresponding parameter (In.65 ~
In.69) to 15 (2nd Source). When the digital input is open (or off), parameters drv and Frq operate
the inverter (start/stop and speed). When the input is closed (or on), parameters bA.04 and bA.05
operate the inverter (start/stop and speed).
Frequency reference
source
Px terminal setting
options
2nd Operation Mode Setting Details
Set one of P1~P5 to 15 (2
nd
Source).
bA.04
Cmd 2nd Src
bA.05
Freq 2nd Src
Select a 2
nd
Start/Stop source (bA.04) and a 2
nd
Reference Frequency
source (bA.05). When the digital input is closed (or on), parameters
bA.04 and bA.05 operate the inverter.
The 2nd command source settings cannot be changed while
operating with the 1st command source (Main Source).
• Before switching operating modes using 2
nd
source, check the 2nd command source
(Start/Stop input). The operating state will change if the Start/Stop input is closed (On).
Before switching, ensure that the 2nd command source is correctly set.
• Depending on the parameter settings, the inverter may stop operating when you
switch the command modes.
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