Modify the number of tools. See parameter No. Modify the setting value. Set again. Modify the parameter setting value. The canned cycle mode G81 to G89 is set. The thread cutting mode is set. The C—axis is under synchronous, composite, or superimposed control. The specified axis command P contains an illegal value.
Correct the program so that the serial spindle synchronous control mode is released in advance. This occurs when the response to switch to the spindle control unit side with regard to the switching command from the NC is incorrect. Correct the program, or consult the PMC ladder diagram to find the reason the signal is not turned on.
Modify the custom macro. M is executed in the DNC operation. Alternatively, the execution of an M command was attempted during DNC operation. Any of the following alarms occurred in the operation with the simple synchronization control. Execute a correct operation.
Perform reference position return only when bit 0 of parameter is 0. Searched for during synchronous and mixed control command. During hobbing synchronization, a command to bring the C—axis under synchronous, composite, or superimposed control is made. Modify the program or the parameter. Or the R command value is negative. Therefore, the pulses cannot be corrected with one distribution. Change the conditions, such as feed rates along axes and torque limit, and try again.
Refer to diagnosis No. For details, refer to diagnosis No. Execute G08P0, to cancel advance control mode, before executing these G05 commands.
Alternatively, I, J, or K was not specified. Alternatively, I, J, K, or P was not specified. Alternatively, I, J, or P was not specified. Alternatively, I, J, P, or Q was not specified. Alternatively, P was not specified. Alternatively, R or Q was not specified. A V macro was specified although the processing to store a macro was not in progress. A U macro number and V macro number do not correspond with each other.
An attempt was made to store 15 or more macros in the storage area for macros of number 90 to Although G98K0 was specified, the G74 command was issued. Although G98K0 was specified, the Q value for the G73 command was not 1 or 2.
In the tracing mode, an attempt was made to make a switch to the punching mode. The specified rotation speed ratio thus cannot be maintained. A parameter for program restart is invalid. Alternatively, 0 was specified in Q for the B—axis. This alarm is issued in the following cases;1. I, J, or K is missing from a G68 command block missing coordinate rotation option. I, J, and K are 0 in a G68 command block. R is missing from a G68 command block. COMP The parameter settings for straightness compensation contain an error.
Possible causes are as follows;1. A parameter for a movement axis or compensation axis contains an axis number which is not used. More than pitch error compensation points exist between the negative and positive end points. Compensation point numbers for straightness compensation are not assigned in the correct order. No straightness compensation point exists between the pitch error compensation points at the negative and positive ends.
The compensation value for each compensation point is too large or too small. Alternatively, a command for setting the length of the major axis to 0 has been specified for circular threading. Parameter No. The axis set in parameter No. The linear and rotation axes cannot be controlled by the CNC. The value set in parameter No. Address I, J, or K is not specified. The value of address I, J, or K is 0. A value that does not allow exponential interpolation is specified.
For example, a negative value is specified in In. Function category: Workpiece thickness measurement Alarm details The position counter was not preset before the start of workpiece thickness measurement.
This alarm is issued in the following cases; 1 An attempt has been made to start measurement without first establishing the origin. Modify the setting of parameter No. The axis along which the tool is moved is not specified. More than one axis is specified as the axis along which the tool is moved. Alternatively, two or more G codes in the same group have been specified in a single block. A command was specified for the index table indexing axis in look— ahead control mode multi blocks are read in advance.
No knot is specified. The knot specification has an error. The number of axes exceeds the limits. Monotone increasing of knots is not observed. Perform axis setting on the FSSB setting screen. The optical cable may be defective, or there may be an error in connection to the amplifier or another module.
Check the optical cable and the connection status. This restart operation cannot be performed. G05 leaning control terminates at the same time. In look—achead control mode multi blocks are read in advance , the simple synchronous axis selection signal changes. Set the parameter correctly.
If detach operation is performed in HPCC mode, this alarm is issued after the currently executed block terminates. Correct the parameter. Check the memory card. Check whether the memory card is write—protected or defective. Check whether the memory card space is insufficient and whether the memory card was removed during data transfer. COMP There is an inclination compensation parameter setting error. The relationship in magnitude among the inclination compensation point numbers is incorrect.
The amount of compensation per compensation point is too large or too small. Bit 2 of parameter No. Position the machine at the reference position manually, then perform manual reference position return.
Supplementary: Automatic setting sets bit 2 of parameter No. Cause: A memory problem occurred during memory initialization. The floppy disk may be defective, or the head may be dirty.
Alternatively, the Handy File is defective. This alarm is issued when flexible synchronization is turned on. Alternatively, the axis number of the slave axis is smaller than that of the master axis. Check the ladder and M codes. The synchronous master axis or slave axis is the EGB axis. The synchronous master axis or slave axis is the chopping axis. Depending on the setting of bit 4 of parameter No. This message reminds the operator to reset the data. If this alarm is issued, reset all the tool offset data.
Operating the machine without resetting the data will result in a malfunction. The touch panel is kept pressed. The touch panel was pressed when power was turned on. Remove the above causes, and turn on the power again. This alarm is issued when either of the following is found;1. Two axes having adjacent servo axis numbers parameter No. After this alarm is issued, make a manual reference position return. If an axis that is not the spline axis is specified in spline interpolation mode, this alarm is issued.
The spline axis is the axis specified in a block containing G For smooth interpolation, the axis specified in G5. For example, in three—dimensional tool compensation mode using an offset vector of which components are the X—, Y—, and Z—axes, when two—axis spline interpolation is performed with the two spline axes set to the X— and Y—axes, a movement along the Z—axis occurs, resulting in this alarm. Alternatively, in three—dimensional circular interpolation mode, a code that cannot be specified is specified.
The G code command block of the canned cycle does not specify the Z point of the drilling axis. When there is a parallel axis with the drilling axis, the parallel axis is also specified at the same time. In the interference check evade function of cutter compensation, a further interference occurs for an already created interference evade vector.
Once this operation is performed, the alarm will not be issued at the next restart. The cause is one of the following;1 The ratio of the deceleration rate to the acceleration rate is below the limit.
Refer to diagnosis display No. Refer to procedure of trouble shooting. Check that the servo interface module and servo amp are connected. Due to an NC or servo system fault in the reference position return, there is the possibility that reference position return could not be executed correctly. Try again from the manual reference position return. Alternatively, abnormal spindle motor load has been detected in Cs mode. This error usually occurs as the result of an improperly set parameters.
This error occurs as the result of improperly set CMR. Leave a Reply Cancel reply Your email address will not be published. The U. How Does a Relay Work? Contact Us sales mroelectric. Cary, North Carolina United States. TV alarm The number of characters in a block is odd. Data exceeding the maximum allowable number of digits was input.
The address was not followed by the appropriate data but was followed by another address or EOB code. An unusable G code or G code corresponding to the function not provided is specified.
Feedrate was not commanded to a cutting feed or the feedrate was inadequate. In variable lead threading, the lead incremental and decremental outputted by address K exceed the maximum command value or a command such that the lead becomes a negative value is given. M Series;An attempt was made to move the machine along the axes, but the number of the axes exceeded the specified number of axes controlled simultaneously.
In circular interpolation G02 or G03 , difference of the distance between the start point and the center of an arc and that between the end point and the center of the arc exceeded the value specified in parameter No. An axis not included in the selected plane by using G17, G18, G19 was commanded in circular interpolation.
When circular interpolation is specified, neither R specifying an arc radius , nor I, J, and K specifying the distance from a start point to the center is specified. In circular interpolation by radius designation, negative value was commanded for address R. Can't get the machine to release the alarm. Even after completely shutting it down. Any ideas? You won't find that in a Fanuc book because it is an alarm generated by the machine tool builders software.
If your machine toll builder provided a maintenance manual it might be in there. Most likely you have a tripped thermal overload on one of the contactors in the electrical cabinet.
Press all the reset buttons on the overloads and you'll probably hear one do a little click. Then you should not get the alarm when you turn on the power. You'll then need to figure out what caused it to overload. Second relay over clicked a bit when I punched it. That got rid of the alarm. It attracts the plunger that trips the circuit. These MCCB trips at current 3 to 5 times its rated current with tripping time of 0. It must not be used in places having normal low surges.
It will frequently trip even in normal conditions. They are used for resistive loads and other resistive elements. Such MCCB trips at current surges 5 to 10 times its rated current with tripping time of 0. As they can tolerate higher surges than type B, they are used for small inductive loads such as small motors, transformers and electromagnets used in industries.
They can tolerate the highest surges; therefore, they are used for highly inductive loads having very high inrush current such as large electrical motors in industries. They are used for inductive loads such as motors with high inrush current. They are used for sensitive semiconductor-based medical or other expensive equipment that is vulnerable to low current surges. The MCCB testing is crucial to see if it is operating as it is supposed to, using the following tests.
Insulation Resistance Test: This test shows the level of insulation between the supply, load and between individual phases. In order to perform this test, the MCCB is disconnected and the measurement is taken. Contact Resistance Test: This test shows the resistance between the main contacts. It is also known as the millivolt drop test. The MCCB is supposed to carry current even if the voltage is very low.
In order to do that, it needs to have very low contact resistance thus having a very low voltage drop. They must be performed last as these tests heat up the MCCB. Thermal Protection Test: This test shows protection against overload conditions. An overcurrent almost 3 to 4 times the rated current is used to simulate a thermal test. If it does not trip, then it cannot provide thermal protection. Magnetic Protection Test: This test simulates the protection against short circuit or fault current.
A solenoid is used to generate the necessary magnetic field for tripping the breaker. A very high current spike is used for a short period of time. The MCCB is a reliable electrical protection device that requires very little maintenance as it is enclosed in a molded casing and cannot be opened. However, periodic maintenance is required to ensure reliable protection by performing the tests mentioned above as well as visual inspection and cleaning, etc.
Since MCCB can handle very high currents, they are used for heavy-duty applications such as in industries. Related Posts:. This Post has been published by WWW. Your email address will not be published. Notify me of follow-up comments by email. Notify me of new posts by email. Table of Contents. Electrical Technology 0 8 minutes read. Show More.
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