Mitsubishi Electric F700 User Manual

104
Function assignment of external
terminal and control
4.10.3 Condition selection of function validity by the second function selection signal
(RT) (RT signal, Pr. 155)
⋅ When the RT signal turns on, the second function becomes valid.
⋅ 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
(d)Switching of characteristic between main motor and sub motor
⋅ Functions that can be set as second functions
You can select the second function using the external terminal (RT signal).
You can also set the RT signal operation condition (reflection time).
Parameter
Number
Name Initial Value Setting Range Description
155
RT signal function validity
condition selection
0
0
Second function is immediately made valid with on of
the RT signal.
10
Second function is valid only during the RT siganl is
on and constant speed operation.
(invalid during acceleration/deceleration)
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 156)
Second function
connection diagram
Second acceleration/deceleration time example
Function
First Function
Parameter Number
Second Function
Parameter Number
Refer to
Page
Torque boost Pr. 0 Pr. 46 70
Base Frequency Pr. 3 Pr. 47 80
Acceleration time Pr. 7 Pr. 44 91
Deceleration time Pr. 8 Pr. 44, Pr. 45 91
Electronic thermal relay function Pr. 9 Pr. 51 95
Stall prevention Pr. 22 Pr. 48, Pr. 49 73
Output frequency detection Pr. 42(Pr. 43) Pr. 50 111
REMARKS
⋅ The RT signal is assigned to the RT terminal in the initial setting. By setting "3" to 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 signal is on, the other functions such as the second acceleration/deceleration time 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 101
STF(STR)
Inverter
Start
Second
function
selection
RT
High speed
RH
Middle speed
RM
SD
(initial value)
RT
Output frequency
Setting value "0"
RH
RM
Acceleration
time is reflected
Time

Mitsubishi Electric F700 Specifications

General

Brand	Mitsubishi Electric
Model	F700
Category	Inverter
Language	English