Mitsubishi Electric FR-D720 K Series Instruction Manual page 178

Selection of operation mode and operation location
NOTE
 If the X12 (MRS) signal is ON, the operation mode cannot be switched to the PU operation mode when the start signal
(STF, STR) is ON.
 When the MRS signal is used as the PU interlock signal, the MRS signal serves as the normal MRS function (output
stop) by turning ON the MRS signal and then changing the Pr. 79 value to other than "7" in the PU operation mode. As
soon as "7" is set to Pr. 79, the MRS signal acts as the PU interlock signal.
 When the MRS signal is used as the PU interlock signal, the logic of the signal is as set in Pr. 17. When Pr. 17 = "2",
read ON as OFF and OFF as ON in the above explanation.
 Changing the terminal assignment using Pr. 178 to Pr. 182 (input terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
(10) Switching of operation mode by external signal (X16 signal)
When External operation and operation from the operation panel are used together, use of the PU-External operation
switching signal (X16) allows switching between the PU operation mode and External operation mode during a stop
(during a motor stop, start command OFF).
When Pr. 79 = any of "0, 6, 7", the operation mode can be switched between the PU operation mode and External
operation mode. (Pr. 79 = "6" At Switchover mode, operation mode can be changed during operation)
For the terminal used for X16 signal input, set "16" to any of Pr. 178 to Pr. 182 (input terminal function selection) to assign the
function.
Pr. 79 X16 Signal State Operation Mode
ON (External)
Setting
External operation
0 (initial value)
1
2
3, 4 External/PU combined operation mode
External operation
6
X12 (MRS) External operation
ON
7
X12 (MRS)
OFF
REMARKS
 The operation mode status changes depending on the setting of Pr. 340 Communication startup mode selection and the ON/OFF
status of the X65 and X66 signals. (For details, refer to page 175.)
 The priorities of Pr. 79, Pr. 340 and signals are Pr. 79  X12  X66  X65  X16  Pr. 340.
NOTE
 Changing the terminal assignment using Pr. 178 to Pr. 182 (input terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
174
OFF (PU)
PU operation mode
mode
PU operation mode
External operation mode
PU operation mode
mode
PU operation mode
mode
External operation mode
Can be switched to External, PU or NET operation mode
Fixed to PU operation mode
Fixed to External operation mode (can be switched to NET operation
mode)
External/PU combined mode fixed
Switching among the External, PU, and NET operation mode is
enabled while running.
Can be switched to External, PU or NET operation mode (output stop
in External operation mode)
Fixed to External operation mode (forcibly switched to External
operation mode)
Remarks