Bullet point:
1) Confirm whether it is operated under manual operation.
2) Confirm the status of the start indicator on the machine operation panel.
3) Confirm the status display of the CNC.
Causes and solutions
If it is not possible to operate even if it is run manually, check it by referring to "Slow forward (JOG) operation is not possible".
Check whether the correct method is selected based on the "Method Selection Status" displayed on the status of the CNC. In addition, check the "Auto Operation Status" in the same way, so that you can check which state the Auto Run is in: starting, feeding, pausing, or stopping.
When the automatic operation does not start (the start indicator does not illuminate).
In the status display of the CNC under the screen, "**" is displayed
1) The mode selection signal is incorrect.
If the mode selection signal on the machine control panel is not entered correctly, the following display will appear.
MDI: Manual Data Entry (MDI) mode.
MEM: How the memory operates.
rmt: remote control operation mode.
If the signal is not displayed correctly, check the signal in the following way on the PMC signal status screen below.
2) The auto-run start (start-up) signal has not been entered.
The signal changes to "1" when the auto-run start button is pressed, "0" when the button is released, and the auto-run start changes from "1" to "0", so the signal status can be checked on the PMC's signal status screen.
3) Input of an automatic operation pause (feed pause) signal.
If the auto-run pause button has not been pressed, the feed pause signal is considered normal as long as the feed pause signal is "1", so the status of the signal can be checked from the PMC's signal status screen.
When the auto-run is in the process of starting (the start-up indicator is on).
In the status display of the CNC at the bottom of the screen, "strt" is displayed.
1) Confirm the diagnostic data displayed in the CNC No0.
Check the item with "1" displayed on the right side of each item.
Data Type Bittype.
From a～e.of items associated with an autorun. Details are as follows:
a.In place detection (positioning confirmation).
Indicates that the positioning of the corresponding axis (g00) has not yet reached the command position. The following diagnostic data is checked to determine whether the positioning has been completed by checking the position deviation of the servo.
Diagnostic 300 Position Deviation Parameter (no1826) Width in place.
The amount of position deviation is almost close to "0" at the end of the positioning of the axis, and when it becomes within the width of the position set in the parameters, the positioning ends and the next program segment is executed.
b.The feed rate multiplier is at 0%.
For the feed rate specified by the program, the actual feed rate is calculated by the following magnification signal, so the signal status can be checked from the signal status screen of the PMC.
The usual magnification signal.
The status of the magnification signal.
c.Manual feed rate multiplier is 0% (dry run only).
Normally, the manual feed rate multiplier function uses slow advance (JOG), whereas in automatic operation, when the dry-run signal DRN becomes "1", the feed rate based on the magnification value of this signal has been calculated to be valid for the feed rate set by the following parameters.
d.An interlock (prohibition of shaft movement) signal is entered.
There are several types of interlock functions, and the following settings are checked first, depending on which interlock (signal) the machine tool manufacturer uses.
Interlock signals (*it, *csl, *bsl) are entered
The interlock signal (*ITN) of each axis is entered
Indicates that an axis move command is assigned to the axes that are being removed.
This function is only available on the CNC side of the parameter rmbx(no.1005 7)=1. If this function is functional, you can check the following signals on the PMC's signal status screen, and check the axes with "1" displayed.
The shaft removal signal (DTCHN) is entered from the PMC.
In the following parameters on the CNC side, the shaft removal function is active for the corresponding axis.
e.Wait for the spindle speed to reach the input of the signal.
For the spindle speed specified by the program, it indicates that the actual speed has not yet been reached.
Check the status of the signal on the signal status screen of the PMC.
2) Check the following parameters and the signal from PMC only when the positioning (G00) is not operated when it is not operated in a fast movement.
a.Set value for fast traverse speed.
b.Fast-moving magnification signals.
3) When it will not be operated only when the cutting feed (other than G00) is performed.
a.The maximum cutting feed rate of the parameter is set incorrectly.
The cutting feed (other than G00) is clamped to this upper speed.
b.When the feed rate is specified per revolution (mm rev).
The position encoder does not rotate.
Check the connection between the spindle and the position encoder. It may be due to the following defects.
The timing belt is disconnected.
The keys fall off. The connection is loose.
The connector of the signal cable is loose.
Poor position encoder.
c.When it cannot be operated by thread cutting commands.
The position encoder does not rotate.
Check the connection between the spindle and the position encoder.
It may be due to the following defects.
The timing belt is disconnected.
The keys fall off. The connection is loose.
The connector of the signal cable is loose.
Poor position encoder.
The connection to the position encoder is to the spindle amplifier in the case of a series spindle servo;In the case of analog interfaces, connect to the CNC side.
See below for details on the connection.
It is also possible to determine whether the A phase B signal from the position encoder has been read correctly, and the actual rotation speed of the spindle can be observed by observing the display of the screen (position display screen). (However, the parameter dps (no.)3105 2) is not displayed when it is 0. ）
d.The case for the i-Series spindle amplifiers.
A cutting feed segment with a command (f instruction) of 0 specifying the feed speed. Parameter fco(no.When 1404 7) is 1, the command of the feed speed (F command) does not occur even if it is 0 (PS0011) "The cutting speed is 0 (not commanded)".