Mitsubishi Electric FR-A820-00046 Instruction Manual page 838

(G) Control parameters
Switching applied load selection with a terminal (Pr. 14 = "4, 5")
● It is possible to switch between for constant-torque load and for lift with RT signal or X17 signal.
● To input the X17 signal, set "17" in any of Pr. 178 to Pr. 189 (input terminal function selection) to
assign the function.
● Switching with RT signal will become disabled when X17 signal is assigned.
Pr. 14 setting
Tab. 5-303: Load selection by terminal
NOTES The RT signal is assigned to the terminal RT in the initial status. Set "3" in any of Pr. 178 to Pr. 189
(input terminal function selection) to assign the RT signal to another terminal.
Changing the terminal assignment using Pr. 178 to Pr. 189 may affect other functions. Set parame-
ters after confirming the function of each terminal.
Pr. 14 will become enabled at the time of V/F control.
Other second functions will become enabled when the RT signal is ON.
Parameters referred to
Pr. 0
Pr. 3
Pr. 178 to Pr. 182
5 - 658
RT (X17) signal
ON
4
OFF
ON
5
OFF
Torque boost
Base frequency
(input terminal function selection)
Output characteristics
For constant-torque load (same as setting value "0")
For lift, boost at reverse rotation 0% (same as setting value "2")
For constant-torque load (same as setting value "0")
For lift, boost at forward rotation 0% (same as setting value "3")
Parameters
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