| Alarm | Message | Meaning |
Check Item |
| SV 000 | Tachogenerator Disconnect | M Series Servo - Check the connection to the motor - Remove wires from terminals 5,6,7,8 - measure between 5 and 7 or 6 and 8 should read a short. Check for tach feedback at check terminals CH2 and CH3. | AC Servo - Check the connection to the motor - Remove wires from terminals 5,6,7 - measure between each of the wires, they should all read the approx same and should be low resistance |
| SV 001 | Motor Overload | M Series Servo - Reset overload, Check the servo transformer thermostat | AC Servo - Check the thermostat on the servo transformer and the heat fin |
| SV 002 | Velocity Unit Breaker Off | M Series Servo - Turn off power and reset breaker | Alarm message not displayed for AC Servo |
| SV 003 | Excess Current in Servo | M Series Servo - Disconnect servo motor and check for short to ground. Check for short circuit on transistors. Bad servo drive board | AC Servo - Disconnect servo motor and check for short to ground. Check for short circuit on transistors. Bad servo drive board |
| SV 004 | Excess Voltage in Servo | M Series Servo - Check input voltage. Check servo motor for short circuit. Replace servo control pcb | AC Servo - Check input voltage. Check servo motor for short circuit. Replace servo control pcb |
| SV 005 | Excess Discharge Current | M Series Servo - Discharge transistor or pcb is defective | AC Servo - Discharge transistor or pcb is defective |
| SV 006 | Velocity Unit Power to Low | M Series Servo - Incoming power is to low. Check voltage on pins 1 and 2, and 2 and 3 on CNC2 for 19 volts ac. Replace pcb | AC Servo - Incoming power is to low. Check voltage on pins 1 and 2, and 2 and 3 on CNC2 for 19 volts ac. Replace pcb. Check 5v fuse. |
| SV 008 | Excess Error (Stop) | Check parameters 1828 - 1830. Check incoming voltage. Master board may be bad. | Check parameters 1828 - 1830. Check incoming voltage. Master board may be bad. |
| SV 009 | Excess Error (Moving) | Check parameters 1828 - 1830. Check incoming voltage. Master board may be bad.Check for mechanical bind. | Check parameters 1828 - 1830. Check incoming voltage. Master board may be bad.Check for mechanical bind. |
| SV 010 | Excess Drift Compensation | Check connections to motor. Check if parameter 1834 exceeds 500. Master board may be bad | Check connections to motor. Check if parameter 1834 exceeds 500. Master board may be bad |
| SV 011 | LSI Overflow | Check parameters 1826,1825,1820,1816. Pulse coder may be defective. Master board may be defective. | Check parameters 1826,1825,1820,1816. Pulse coder may be defective. Master board may be defective. |
| SV 012 | Motion Value Overflow | Check CMR parameter or feedrate setting failure | Check CMR parameter or feedrate setting failure |
| SV 013 | Improper V-Ready Off | M Series Servo - Check for a 100vac between terminals 3 and 4. Check fuse breaker is not tripped | AC Servo - Check for a 100vac between terminals 3 and 4. Check fuse breaker is not tripped |
| SV 014 | Improper V-Ready On | Velocity control ready signal VRDY was turned on when the position control ready signal PRDY is turned off | Velocity control ready signal VRDY was turned on when the position control ready signal PRDY is turned off |
| SV 015 | Pulse Coder Disconnect | Broken cable to Pulse Coder. Bad pulse coder. Master board may be defective. | Broken cable to Pulse Coder. Bad pulse coder. Master board may be defective. |
| SV 017 | ILL Position Control LSI | A position control LSI fault was detected | A position control LSI fault was detected |
| SV 018 | Unfit DSOG Frequency | Check connection to resolver. Check gain and phase shift. Position detector is bad. Inductosyn/Resolver pcb is bad. | Check connection to resolver. Check gain and phase shift. Position detector is bad. Inductosyn/Resolver pcb is bad. |
| SV 019 | Unfit Pulse of Pulse Coder | An error was detected in the feedback pulse from the pulse coder | An error was detected in the feedback pulse from the pulse coder |
| SV 020 | Unfit Phase Shift Value | Check connection to resolver. Check gain and phase shift. Position detector is bad. Inductosyn/ Resolver pcb is bad. | Check connection to resolver. Check gain and phase shift. Position detector is bad. Inductosyn/Resolver pcb is bad. |
| SV 021 | Unfit Pulse Coder 1 Rev On | The one revolution signal from the pulse coder was turned on at an abnormal position. | The one revolution signal from the pulse coder was turned on at an abnormal position. |
| SV 022 | Pulse Coder 1 Rev Missing | The one revolution signal from the pulse coder was not turned on within the allowable time | The one revolution signal from the pulse coder was not turned on within the allowable tme |
| SV 023 | SV Overload | Servomotor was overloaded | Servomotor was overloaded |
| SV 025 | V Ready On | Velocity control ready signal VRDY was turned on instead of being turned off when the servo control was turned on. | Velocity control ready signal VRDY was turned on instead of being turned off when the servo control was turned on. |
| SV 026 | Illegal Axis Arrange | Parameter #1023 for the servo axis arrangement was not set properly | Parameter #1023 for the servo axis arrangment was not set properly |
| SV 030 | Emergency Stop | Emergency stop was applied | Emergency stop was applied |
| OT 001 | "+" Overtravel (Soft 1) | ||
| OT 002 | "-" Overtravel (Soft 1) | ||
| OT 003 | "+" Overtravel (Soft 2) | ||
| OT 004 | "-" Overtravel (Soft 2) | ||
| OT 005 | "+"Overtravel (Soft 3) | ||
| OT 006 | "-" Overtravel (Soft 3) | ||
| OT 007 | "+" Overtravel (Hard) | ||
| OT 008 | "-" Overtravel (Hard) | ||
| OT 021 | "+" Overtravel (Pre-Check) | ||
| OT 022 | "-" Overtravel (Pre-Check) | ||
| OT 100 | Spindle Alarm | Spindle motor alarm signal turned on | |
| OT 101 | Spindle Motor Overheat | Spindle motor is overheated. Check Fan on spindle mo | |
| OT 102 | Excess Velocity Error | A deviation is excessive between commanded and actual velocity of spindle motor. Transistor module bad. Spindle motor feedback sensor bad. | |
| OT 103 | Fuse F7 Blown | Check Fuse F7. Check transistor modules | |
| OT 104 | Fuse F1,F2, or F3 Blown | Check Fuse F1,F2, and F3 | |
| OT 105 | Fuse AF2 or AF3 Blown | Check AF2 and AF3. Defective PCB | |
| OT 106 | Excess Velocity (Analog) | Spindle motor speed exceeded the max rating. | |
| OT 107 | Excess Velocity (Digital) | Spindle motor speed exceeded the max rating. | |
| OT 108 | Voltage (+24V) Too High | Check 24Volts, Check voltage selector switch | |
| OT 109 | Power Semiconductor Overload | Power semiconductor overheat Check Fan on spindle drive | |
| OT 110 | Voltage (+15V) Too Low | Check 15V test pin on spindle board. Check Fuses. Replace spindle Board | |
| OT 111 | Voltage Excess (DC Link) | The voltage on the DC Link is to high. Check incoming voltage. | |
| OT 112 | Current Excess (DC Link) | High current. Check motor for short. Check transistors. | |
| OT 113 | CPU Error | Replace spindle board | |
| OT 114 | Rom Error | Eprom Chips defective. Replace spindle board. | |
| OT 115 | Option Alarm | Auxiliary alarm for spindle motor. | |
| OT 116 | Disconnection Pulse Coder | Bad Pulse Coder. Broken Cable. |