Mitsubishi Electric FR-E800, Instruction Manual

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13. (T) Multi-Function Input Terminal Parameters
13.8 Selecting the condition to activate the Second function selection (RT) signal
13.8
Selecting the condition to activate the Second
function selection (RT) signal
The second function can be selected using the RT signal.
• Turning ON the Second function selection (RT) signal enables the second functions. For the RT signal, set "3" in any
parameter from Pr.178 to Pr.189 (Input terminal function selection) to assign the function.
• The following are the examples of the applications of the second functions.
Switching between regular use and emergency use
Switching between heavy load and light load
Changing the acceleration/deceleration time by break point acceleration/deceleration
Switching characteristics of main motor and sub motor
• When the RT signal is ON, second functions are selected. The following table shows the functions which can be changed
to the second function.
*1 The function can be changed by switching the RT signal ON/OFF while the inverter is stopped. If a signal is switched during operation, the
operation method changes after the inverter stops. (
Pr.450 ≠ 9999)
Connection diagram example for the second
function Example of the second acceleration/deceleration time
Function
First function parameter
number
Second function parameter
number
Refer to page
Torque boost Pr.0 Pr.46 426
Base frequency Pr.3 Pr.47 428
Acceleration time Pr.7 Pr.44 196
Deceleration time Pr.8 Pr.44, Pr.45 196
Electronic thermal
O/L relay
Pr.9 Pr.51
238
Free thermal Pr.600 to Pr.604 Pr.692 to Pr.696
Motor permissible load level
*1
Pr.607 Pr.608
Stall prevention Pr.22 Pr.48 256
Applied motor
*1
Pr.71 Pr.450 340
Motor constant
*1
Pr.80 to Pr.84, Pr.90 to
Pr.94, Pr.298, Pr.702,
Pr.706, Pr.707, Pr.711,
Pr.712, Pr.717, Pr.721,
Pr.724, Pr.725, Pr.859,
Pr.1412
Pr.453 to Pr.462, Pr.560,
Pr.738 to Pr.746, Pr.860,
Pr.1413
345 , 355
Speed control gain (Advanced
magnetic flux vector)
*1
Pr.89 Pr.569 102
Offline auto tuning
*1
Pr.96 Pr.463 345 , 355
Online auto tuning
*1
Pr.95 Pr.574 362
Motor control method
*1
Pr.800 Pr.451 97
Speed control gain Pr.820, Pr.821 Pr.830, Pr.831 121
Analog input filter Pr.822, Pr.826 Pr.832, Pr.836 316
Speed detection filter Pr.823 Pr.833 154
Torque control gain Pr.824, Pr.825 Pr.834, Pr.835 149
STF/STR
SD
Inverter
Start
Second function selection
RT
High speed
RH
Middle speed
RM
RT
Output frequency
RH
RM
Acceleration
time is applied
Time