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Function assignment of external terminal and control
4
PARAMETERS
4.12.3 Condition selection of function validity by second function selection signal (RT)
When the RT signal turns ON, the second function becomes valid.
For the RT signal, set "3" in any of Pr.178 to Pr.184 (input terminal function selection) to assign the function.
The second 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
When the RT signal is ON, the following second function is selected at the same time.
CAUTION
A PM motor is a magnet motor. High-voltage is generated at motor terminals while the motor is running. Do not
touch motor terminals and other parts until the motor stops to prevent an electric shock.
Parameter referred to
Pr.178 to Pr.184 (input terminal function selection) Refer to page 138
You can select the second function using the RT signal.
Second function connection diagram Second acceleration/deceleration time
Function
First Function
Parameter Number
Second Function
Parameter Number
Refer to
Page
Acceleration time Pr.7 Pr.44 125
Deceleration time Pr.8 Pr.44, Pr.45 125
Torque limit Pr.22 Pr.48 111
NOTE
Changing the terminal assignment using Pr.178 to Pr.184 (input terminal function selection) may affect the other functions.
Set parameters after confirming the function of each terminal.
Parameter referred to
Pr.178 to Pr.184 (input terminal function selection) Refer to page 138
STF (STR)
SD
Drive unit
Start
Second function
selection
RT
High speed
RH
Middle speed
RM
RT
Speed
Acceleration time
is reflected
Time
RH
RM