Okuma Alarms Errors

Okuma Alarm-C 3746 External start switch External start switch input was ON all through a cycle.

Okuma Alarm-C 3747 NC start button NC start button input was ON all through a cycle.

Okuma Alarm-C 3748 Door sensor Door sensor failed

Okuma Alarm-C 3730 Coolant flow Coolant flow was suspended longer than the monitor time. Code None->The coolant flow sensor did not turn ON within the coolant flow monitor time (for…

Okuma Alarm-C 3731 Coolant abnormal The humidifier unit was found to be faulty (I/O check NO.40 INPUT bit 8 iEXCHMAL).

Okuma Alarm-C 3738 Mode switch operation prohibited The operation mode switch was changed to another position (SEMI-AUTO or MANUAL) during programmed operation in AUTO mode.

Okuma Alarm-C 3739 Control box air conditioner error The air conditioner inside the control box failed.

Okuma Alarm-C 3740 Air filter clogged The filter switch on the air panel kept OFF for 2 seconds or longer. Code None->The air filter is clogged. 1->The abso scale air…

Okuma Alarm-C 3741 Index chuck oil level The index chuck operating fluid switch kept OFF for a second or longer. Code None ->A low index operating fluid level

Okuma Alarm-C 3754 Mist collector Code 1->The mist collector failed.[Mist collector alarm/]signal kept OFF for a second or longer. 2->The mist collector ON confirmation signal remained OFF for more than…

Okuma Alarm-C 3755 Workpiece conveyor error Lathe with work conveyor interface: Work conveyor normal code is off. Code 1->Some trouble happened in work conveyor. [alarm/]signal kept OFF for two seconds…

Okuma Alarm-C 3756 Unmachined workpiece detection By the unmachined workpiece detection,[NG] signal was OFF.

Okuma Alarm-C 3757 Bar feeder error Code None->An abnormality is detected with the bar feeder.

Okuma Alarm-C 3749 Automatic lubrication system error Some trouble happened in Automatic lubrication system. If “0” is set at MC USER PARAMETER No.1-2 CHUCK:”3. Auto. lubrication system alarm-C” the alarm…

Okuma Alarm-C 3750 Tailstock absolute encoder error [Unit faulty/] signal from tail-stock absolute coder remained OFF longer than 1[s]. An attempt was made to start the NC unit when the…

Okuma Alarm-C 3752 Coolant supply Code None->[coolant flowing] signal was not ON when [coolant supply solenoid] signal was turned off.

Okuma Alarm-C 3769 Side cover open Code None->At the time of NC running, a side cover is not close status. When a side cover is not close status, NC running.

Okuma Alarm-C 3753 Drain tank Both float switches of drain upper bound water level and lower limit water level turned off for 1s or more.

Okuma Alarm-C 3758 Oil mist error Code 1->The oil level in the oil tank is too low. 2->The oil mist air pressure is too low. 3->The oil exhalation confirmation input…

Okuma Alarm-C 3759 Tool monitoring unit error detection Code 1->The tool monitoring unit failed. Tool monitoring unit alarm signal(I/O check NO.56 INPUT bit A iER3)turned ON. Probable Faulty Locations 1)[Code]1->Overload

Okuma Alarm-C 3760 Fan cooling unit pressure Code 1->Fan cooling unit pressure/signal turned than 3s it off.

Okuma Alarm-C 3751 Invalid external tool offset input Code 1->Plus or minus compensation switch is pressed when tool offset compensation function switch is set at off. 2->Plus or minus compensation…

Okuma Alarm-C 3766 Coupling device interlock Code 1->A coupling device is alarm condition.

Okuma Alarm-C 3767 Tailstock holding miss check air Code None->The air circuit for detecting tailstock holding is clogged. The clogging check switch kept ON longer than the preset time.

Okuma Alarm-C 3768 Irregular coolant level Coolant filter Error Code 1->A coolant filter is clogged. Probable Faulty Locations 1)Coolant filter is clogged. or Float SW is Error in coolant sub…

Okuma Alarm-C 3772 Coolant flow The coolant flow was suspended longer than the monitor time. Code None->The coolant flow sensor did not turn ON within the coolant flow monitor time…

Okuma Alarm-C 3762 ACC step time over A step of operation took more than 120[s] during the execution of an ACC sequence. Code XXXXXXXX:The limit switch status for each component…

Okuma Alarm-C 3763 Switch disabled Code 1->A collet chuck effective switch was selected OFF while the finger chuck was clamped.

Okuma Alarm-C 3764 Oil controller unit The hydraulic oil controller or Coolant oil controller unit alarm. Code none->Oil controller alarm/ signal kept OFF.

Okuma Alarm-C 3765 Spindle vibration sensor Code 1->The wire of spindle vibration sensor was broken. Probable Faulty Locations Breaking of wire in the vibration sensor circuit

Okuma Alarm-C 3770 Safety door open Safety door is open. Character-string Machine No. display when FL-net specification.

Okuma Alarm-C 3771 Lube tank motor run time over The lubrication tank motor run time exceeded the lubrication motor ON time limit. Code 1 Probable Faulty Locations 1)Program error Failure…

Okuma Alarm-C 3773 Earthquake detected Feel earthquake by an earthquake monitor.

Okuma Alarm-C 3774 EC circuit breaker The circuit breaker of the EC is tripped. This alarm occurs when a circuit breaker in the EC control circuit is tripped. Check the…

Okuma Alarm-C 3791 Mist air lubrication unit The M spindle mist lubrication unit failed Code 1->The oil mist level normal signal remained OFF for more than 3[s]. 2->The X-/Z-axis oil…