Condition Selection Of Function Validity By The Second Function Selection Signal (Rt) And Third Function Selection Signal (X9) (Rt Signal, X9 Signal, Pr. 155); Condition Selection Of Function Validity By The Second Function Selection Signal (Rt) And - Mitsubishi Electric FR-B-750 to 75K Instruction Manual

Function assignment of external terminal and control

4.11.3 Condition selection of function validity by the second function selection signal (RT) and

third function selection signal (X9) (RT signal, X9 signal, Pr. 155)
You can select the second (third) function using the RT(X9) signal.
You can also set the condition (reflection conditon) where the second function and third function become valid.
Parameter
Name
Number
RT signal function validity
155
condition selection
⋅ When the RT signal turns on, the second function becomes valid.
⋅ When the X9 signal turns on, the third function becomes valid.
For the X9 signal, set "9" in any of Pr. 178 to Pr. 189 (input terminal function selection) to assign the function.
⋅ The second (third) function has the following applications.
(a)Switching between normal use and emergency use
(b)Switching between heavy load and light load
(c)Changing of acceleration/deceleration time by broken line acceleration/deceleration
(d)Switching of characteristic between main motor and sub motor
Second function
connection diagram
Inverter
Start
STF(STR)
Second
function
selection
RH
High speed
RM
Middle speed
SD
⋅ Functions that can be set as second and third functions
Function
Acceleration time
Deceleration time
Stall prevention
REMARKS
⋅ The RT signal is assigned to the RT terminal in the initial setting. By setting "3" in any of Pr. 178 to Pr. 189 (input terminal function
selection), the RT signal can be assigned to the other terminal.
CAUTION
⋅ When the RT (X9) signal is on, the other functions such as the second (third) are also selected.
⋅ Changing the terminal assignment using Pr. 178 to Pr. 189 (input terminal function selection) may affect the other functions. Please
make setting after confirming the function of each terminal.
♦ Parameters referred to ♦
Pr. 178 to Pr.189 (input terminal function selection)
122
Initial Value
0
Second acceleration/deceleration time example
Setting value "0"
RT
RT
RH
RM
First Function
Parameter Number
Pr. 7
Pr. 8
Pr. 22
Refer to page 118
Setting Range
Second (third) function is immediately made valid with on
0
of the RT(X9) signal.
Second (third) function is valid only during the RT (X9)
10 signal is on and constant speed operation. (invalid during
acceleration/deceleration)
(initial value)
Acceleration
time is reflected
Time
Second Function
Parameter Number
Pr. 44
Pr. 44, Pr. 45
Pr. 48, Pr. 49
Description
Third Function Refer to
Parameter Number Page
Pr. 110
Pr. 110, Pr. 111
Pr. 114, Pr. 115
88
88
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