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4-3 Inching
4-3 Inching
Inching is used to move an axis by a specified distance and then stop. Basically, inching uses
the same parameters as jogging. (Jogging is described in the previous section.) If you set the
amount of movement in the Inching Width parameter in the Jogging/Inching Setting
parameters, the PCU will perform inching instead of jogging. If you set the Inching Width
parameter to 0, the PCU will perform jogging.
Manual Operation
4
Operating Procedure
The procedure is almost the same as the jogging procedure given in the previous section.
1. Common Parameter Settings
To perform inching, set the Manual Operation Command Memory Area common parameter.
2. EtherCAT Communications Settings
Execute automatic network setup by selecting Network Auto Setup from the Network Menu
on the menu bar.
3. Axis Parameter Settings
Set the axis parameters, such as the inching speed parameters.
4. Data Transfer
Transfer the common parameters and axis parameters to the PCU.
5. Restarting the PCU
Restart the PCU to enable the parameters that were transferred.
6. Place the Servo Drive in operating status and lock the servo.
7. Select the jogging/inching speed.
8. Turn ON the Jogging/Inching Bit to perform inching.
The settings of the common parameters are the same as those for jogging. Refer to Common
Parameter Settings on page 4-2.
Axis Parameter Settings
The axis parameters are also roughly the same as those for jogging. Therefore, this section
describes only the additional parameters that require setting.
1. Click Axis Parameter in the project tree in the PCU Setting Window.
The window for setting the axis parameters will appear.
2. Select JOG/Inching Setting in the Parameter Type Box.
Set the amount of movement per one inching operation in the Inching Width parameter.
Setting Example
This example shows the PCU settings for the following conditions.
ΠOne inching operation turns the motor by 0.5 rotation.
These settings are made as follows:
The encoder resolution is 2,000 pulses. For the Inching Width parameter in step 2 above, set
1,000 pulses to turn the motor by 0.5 rotation. Enter 1000 as the set value.
To enable the new parameter setting, transfer the parameters to the PCU and restart the PCU.
For details, refer to Transferring Parameters and Restarting on page 4-6.
4-9
CJ-series Position Control Unit Operation Manual (CJ1W-NC281/NC481/NC881/NCF81/NC482/NC882)