G. ALARM LIST
751 SPINDLE ALARM DETECTION
This alarm indicates in the NC that an alarm is generated in the
spindle unit of the system with the serial spindle. The alarm is dis-
played in form AL–XX (XX is a number). Refer to (16) Alarms dis-
played on spindle servo unit .The alarm number XX is the number
indicated on the spindle amplifier. The CNC holds this number and
displays on the screen.
752 SPINDLE MODE CHANGE FAULT This alarm is generated if the system does not properly terminate a
mode change. The modes include the rigid tapping and spindle con-
trol modes. The alarm is activated if the spindle control unit does not
respond correctly to the mode change command issued by the NC.
754 SPINDLE ABNORMAL TORQUE
An abnormal load on the first spindle motor was detected.
The details of spindle alarm No. 750 are displayed in the diagnosis display
(No. 409) as shown below.
#6 #5 #4 #3
SHE 0 : The serial communications control unit in the Power Mate i is normal.
1 : The serial communications control unit in the Power Mate i was
detected to have a fault.
S1E 0 : Spindle serial control was started normally.
1 : An error was detected when spindle serial control was started.
SPE 0 : In the spindle serial control, the serial spindle parameters fulfill the
spindle unit startup conditions.
1 : In the spindle serial control, the serial spindle parameters do not fulfill
the spindle unit startup conditions.
14) System alarms
(These alarms cannot be reset with reset key.)
Number Message Contents
900 ROM PARITY A ROM parity alarm condition has occurred in the FROM where the
CNC and servo system programs, macro programs, and C macro
programs are stored. Correct the contents of the flash ROM having
the displayed number.
910 SRAM PARITY : (BYTE 0) This is an SRAM parity error. Clear the memory, or replace the
memory module or base printed
circuit board Subsequently re
911 SRAM PARITY : (BYTE 1)
the parameters and all other data.
912 DRAM PARITY : (BYTE 0) A RAM parity error occurred in the DRAM module. Replace the
DRAM mod le
913 DRAM PARITY : (BYTE 1)
914 DRAM PARITY : (BYTE 2)
915 DRAM PARITY : (BYTE 3)
916 DRAM PARITY : (BYTE 4)
917 DRAM PARITY : (BYTE 5)
918 DRAM PARITY : (BYTE 6)
919 DRAM PARITY : (BYTE 7)
920 SERVO ALARM (1–4 AXIS) Servo alarm (first to fourth axis). A watchdog alarm condition oc-
curred, or a RAM parity error occurred in the axis control card.
Replace the axis control card.
The details of spindle