226
Function assignment of external terminal and control
4.15.3
Condition selection of function validity by the second function selection signal (RT) and
third function selection signal (X9) (RT signal, X9 signal, Pr. 155)
⋅ 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
⋅ Functions that can be set as second and third functions
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
Number
Name Initial Value Setting Range Description
155
RT signal function validity
condition selection
0
0
Second (third) function is immediately made valid with on
of the RT(X9) signal.
10
Second (third) function is valid only during the RT (X9)
signal is on and constant speed operation. (invalid during
acceleration/deceleration)
Second function
connection diagram
Second acceleration/deceleration time example
Function
First Function
Parameter Number
Second Function
Parameter Number
Third Function
Parameter Number
Refer to
Page
Torque boost Pr. 0 Pr. 46 Pr. 112 138
Base frequency Pr. 3 Pr. 47 Pr. 113 153
Acceleration time Pr. 7 Pr. 44 Pr. 110 167
Deceleration time Pr. 8 Pr. 44, Pr. 45 Pr. 110, Pr. 111 167
Electronic thermal relay
function
Pr. 9 Pr. 51 ⎯ 175
Stall prevention Pr. 22 Pr. 48, Pr. 49 Pr. 114, Pr. 115 144
Applied motor Pr. 71 Pr. 450 ⎯ 179
Motor constant
Pr. 80 to Pr. 84, Pr. 89,
Pr. 90 to Pr. 94, Pr. 96, Pr. 859
Pr. 453 to Pr. 457, Pr. 569,
Pr. 458 to Pr. 462, Pr. 463, Pr. 860
⎯ 181
Online auto tuning
selection
Pr. 95 Pr. 574 ⎯ 191
Motor control method Pr. 800 Pr. 451 ⎯ 87
Speed control gain Pr. 820, Pr. 821 Pr. 830, Pr. 831 ⎯ 99
Analog input filter Pr. 822, Pr. 826 Pr. 832, Pr. 836 ⎯ 280
Speed detection filter Pr. 823 Pr. 833 ⎯ 136
Torque control gain Pr. 824, Pr. 825 Pr. 834, Pr. 835 ⎯ 122
Torque detection filter Pr. 827 Pr. 837 ⎯ 136
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) Refer to page 222
STF(STR)
Inverter
Start
Second
function
selection
RT
High speed
RH
Middle speed
RM
PC
(initial value)
RT
Output frequency
Setting value "0"
RH
RM
Acceleration
time is reflected
Time
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