152
Selection of operation mode and operation location
(8) Switchover mode (setting "6")
While continuing operation, you can switch among the PU operation, External operation and Network operation (NET
operation).
(9) PU operation interlock (setting "7")
The PU operation interlock function is designed to forcibly change the operation mode to the External operation mode
when the PU operation interlock signal (X12) input turns OFF.
This function prevents the drive unit from being inoperative by the external command if the mode is accidentally left
unswitched from PU operation mode.
Set "7" (PU operation interlock) in Pr. 79.
For the terminal used for X12 signal (PU operation interlock signal) input, set "12" to any of Pr. 178 to Pr. 182 (input terminal
function selection) to assign the function. (Refer to page 100 for Pr. 178 to Pr. 182.)
When the X12 signal is not assigned while MRS signal is assigned, function of the MRS signal switches from output stop
to PU operation interlock signal.
<Function/operation changed by switching ON/OFF the X12 (MRS) signal>
Operation Mode Switching Switching Operation/Operating Status
External operation PU operation
Select the PU operation mode with the operation panel or parameter unit.
Rotation direction is the same as that of External operation.
The speed set with the potentiometer (speed command) or like is used unchanged. (Note that
the setting will disappear when power is switched OFF or the drive unit is reset.)
External operation NET operation
Send the mode change command to the Network operation mode through communication.
Rotation direction is the same as that of External operation.
The value set with the setting potentiometer (speed command) or like is used unchanged. (Note
that the setting will disappear when power is switched OFF or the drive unit is reset.)
PU operation External operation
Press the external operation key of the operation panel or parameter unit.
The rotation direction is determined by the input signal of the External operation.
The set speed is determined by the external speed command signal.
PU operation NET operation
Send the mode change command to the Network operation mode through communication.
Rotation direction and set speed are the same as those of PU operation.
NET operation External operation
Send the mode change command to the External operation mode through communication.
The rotation direction is determined by the input signal of the External operation.
The set speed is determined by the external speed command signal.
NET operation PU operation
Select the PU operation mode with the operation panel or parameter unit.
The rotation direction and speed command in the Network operation mode are used unchanged.
X12 (MRS)
Signal
Function/Operation
Operation Mode Parameter Write
ON
Operation mode (External, PU, NET) switching
enabled
Output stop during External operation
Parameter write enabled (depending on Pr. 77 Parameter
write selection and each parameter write conditions
(Refer to page 52 for the parameter list))
OFF
Forcibly switched to External operation mode
External operation allowed
Switching between the PU and Network operation
mode is enabled
Parameter write disabled with exception of Pr. 79
Operating Condition
X12 (MRS) Signal
Operation
Mode
Operating Status
Switching to PU,
NET Operation
Mode
Operation
Mode
Status
PU/NET
During
stop
ON OFF ∗1
External ∗2
If external operation speed setting and start
signal are entered, operation is performed in
that status.
Not allowed
Running ON OFF ∗1 Not allowed
External
During
stop
OFF ON
External ∗2
During stop
Allowed
ON OFF Not allowed
Running
OFF ON During operation output stop Not allowed
ON OFF Output stop operation Not allowed
∗1 The operation mode switches to the External operation mode independently of whether the start signal (STF, STR) is ON or OFF. Therefore, the
motor is run in External operation mode when the X12 (MRS) signal is turned OFF with either of STF and STR ON.
∗2 At fault occurrence, pressing
of the operation panel resets the drive unit.
