Mitsubishi Electric FR-A800 Series Instruction Manual page 527

The condition to activate the second or third function can be also set.
Pr.
RT signal function
155
validity condition
T730
selection
• Turning ON the Second function selection (RT) signal enables the second functions.
• Turning ON the Third function selection (X9) signal enables the third functions. For the X9 signal, set "9" in any of Pr.178
to 189 (Input terminal function selection) to assign the function.
• The following are the examples of the applications of the second (third) functions.
Switching between regular use and emergency use
Switching between heavy load and light load
Changing the acceleration/deceleration time by break point acceleration/deceleration
Switching characteristics of main motor and sub motor
Connection diagram example for the second function
Start
Second function selection
High speed
Middle speed
526
5. PARAMETERS
5.12 (T) Multi-function input terminal parameters
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Name Initial value
0
Inverter
STF/STR
RT
RH
RM
SD
search engine
Setting range
The second function is immediately enabled when the
0 RT signal is turned ON, and the third function is immediately
enabled when the X9 signal is turned ON.
The function cannot be changed to the second or third function
during acceleration/deceleration. When the signal is turned ON
10
during acceleration/deceleration, the function is changed after
the acceleration/deceleration is finished.
Example of the second acceleration/deceleration time
Setting value "0"
RT
RH
RM
Description
(initial value)
Acceleration
time is applied
Time