Second Function Rt Signal Reflection Time Selection (Terminal Rt, Pr. 155) - Mitsubishi Electric F700 Instruction Manual

Function assignment of external
terminal and control
3.9.3

Second function RT signal reflection time selection (Terminal RT, Pr. 155)

You can select the second function using the external terminal (RT signal).
Pr.154
You can also set the RT signal operation condition (reflection time).
page 56
Pr.156
page 56
Parameter
Number
RT signal reflection time
155
selection
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 140)
⋅ 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
Second function
connection diagram
Start
Second
function
selection
High speed
Middle speed
⋅ Functions that can be set as second functions
Function
Torque boost
Base Frequency
acceleration time
Deceleration time
Electronic thermal relay function
Stall prevention
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.0, Pr.46 Torque boost
Pr. 3, Pr. 47 Base frequency
Pr. 7, Pr. 8, Pr. 44, Pr. 45 Acceleration and deceleration times
Pr. 9, Pr. 51 Electronic thermal O/L relay
Pr. 22, Pr. 48 Stall prevention operation level
Pr. 178 to Pr.189 (input terminal function selection)
88
Name Initial Value
0
Second acceleration/deceleration time example
Setting value "0"
Inverter
STF(STR)
RT
RH
RM
RT
PC
RH
RM
First Function
Parameter Number
Pr.0
Pr.3
Pr.7
Pr.8
Pr. 9
Pr.22
Refer to page 53
Refer to page 64
Refer to page 78
Refer to page 56
Refer to page 85
Setting Range
This function is immediately made valid
0
with on/off of the RT signal.
The on/off of the RT signal is valid only
during a stop and constant speed
10
operation.(invalid during acceleration/
deceleration)
(initial value) Setting value "10"
Acceleration
time is reflected
Time
RT
RH
RM
Second Function Refer to
Parameter Number Page
Pr.46
Pr.47
Pr.44
Pr.44, Pr.45
Pr.51
Pr.48, Pr.49
Refer to page 74
Description
The setting is reflected
at the next acceleration
53
64
74
74
78
56
Time