Mitsubishi FR-A800

(T) Multi-Function Input Terminal Parameters
434
PARAMETERS
5.12.10 Selecting operation condition of the second
function selection signal (RT) and the third
function selection signal (X9)
• Turning ON the Second function selection (RT) signal enables the second functions.
• Turning ON the Third function selection (X9) enables the third functions. For the X9 signal, set "9" in Pr.178 to 189 (input
terminal function selection) to assign the function.
• The following table lists application examples of the second (third) functions.
- Switching between regular use and emergency use
- Switching between heavy load and light load
- Change the acceleration/deceleration time by break point acceleration/deceleration
- Switching characteristics of main motor and sub motor
Second (third) function can be selected by the RT (X9) signal.
Operating condition (validity condition) for second (third) function can be also set.
Pr. Name Initial value Setting range Description
155
T730
RT signal function validity
condition selection
0
0
Second (third) function is immediately enabled
with ON of RT (X9) signal.
10
Second (third) function will be enabled while RT
(X9) signal is ON and running in constant speed.
(Disabled while accelerating or decelerating)
Connection diagram for second
function selection
Example of second
acceleration/deceleration time
STF/STR
SD
Inverter
Start
Second function selection
RT
High speed
RH
Middle speed
RM
(initial value)
RT
Output frequency
Setting value "0"
RH
RM
Acceleration
time is applied
Time