Okuma Alarms Errors

Okuma Alarm-C 3777 Air blow flow The air blow flow was suspended longer than the monitor time. Code None->The air blow flow sensor did not turn ON within the air…

Okuma Alarm-C 3778 M axis cooling fan overload Code None->The overload of the MA axis cooling fan is tripped.

Okuma Alarm-C 3784 Fire extinguish unit power OFF Code None->Fire extinguish unit is power OFF.

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

Okuma Alarm-C 3792 Chucking miss Code None->The chucking error detection pressure switch is not actuated although a workpiece is clamped in the chuck. Or the workpiece is not clamped in…

Okuma Alarm-C 3793 Coolant level low The coolant level is low. The float switch within coolant tank turned OFF the coolant level normal signal. Code 1->The coolant level normal signal…

Okuma Alarm-C 3780 Touch setter unit error Code None->Touch setter unit illegal signal kept OFF for a second or longer ,when touch setter was retract position.

Okuma Alarm-C 3781 EC overload The overload relay of the EC is tripped. This alarm occurs when any of the coolant motor etc.is overheated or a problem with them is…

Okuma Alarm-C 3782 Sensor contact signal error Code 1->When the tool breakage detection ON command was given, the Sensor signal input had been ON.

Okuma Alarm-C 3783 ATC interlock Code 1->In the case of matrix magazine, when the MGA axis movement command was issured, the carriage pot was not in down end position. 2->In…

Okuma Alarm-C 3788 AAC system condition A step of operation took more than 120 [s] during the execution of an AAC sequence. Code XYZZ X = None:The input condition is…

Okuma Alarm-C 3789 Air dryer unit error An error has occurred in the air dryer unit. Code 1->The air dryer unit unusual signal remained ON for more than 1[s].

Okuma Alarm-C 3790 Ext. program select parity check When selecting a program according to the external device command, the NC conducted a parity check as specified by the parameter (machine…

Okuma Alarm-C 3794 Power source unit overload The circuit breaker for lighting inside the EC power unit is tripped. Probable Faulty Locations Lighting cable is either shorted or connected to…

Okuma Alarm-C 3779 APC system conditions During execution of the APC cycle, APC input information does not match the APC sequence advance conditions. (indicated in the APC input logic chart)…

Okuma Alarm-C 3843 Safety fence open Code 1->In Coupling ON, it became the condition that a safety fence is not close.

Okuma Alarm-C 3785 Spindle lubrication unit Error was caused on spindle lubrication unit. Code 1->The spindle lubrication filter is clogged. The clogged spindle lubrication filter/ signal kept OFF for 2…

Okuma Alarm-C 3844 Invalid loader grease lubrication input Code 1->Loader grease lubrication flow-1 input signal has never been ON. 2->Loader grease lubrication flow-2 input signal has never been ON. 3->Conveyor…

Okuma Alarm-C 3786 Chip flush-out motor overload The chip flush-out motor is tripped. Code 1->Chip flush-out ON confirmation signal remained OFF for more than 3[s] while chip flush-out motor ON.

Okuma Alarm-C 3845 Coolant level lower limit Coolant is running short. Code 1->The lowlevel signal has been OFF for 1[s] or more. The input which shows a state of a…

Okuma Alarm-C 3787 M-axis unit command mismatch The operation command output to the VAC and the operation command status output from the VAC remained unmatched for more than 2[s]. Code…

Okuma Alarm-C 3846 M/C panel at interfering position Code 1->The machine operation panel is not at the retract position.

Okuma Alarm-C 3847 Invalid limit/proximity switch The limit/proximity switch status did not change to indicate the completion of an operation within the preset time. Code 1->The upper door open limit…

Okuma Alarm-C 3848 Anti-gouge unit faulty The anti-gouge unit alarm switch kept OFF for 2 seconds or longer.

Okuma Alarm-C 3853 Invalid loader limit/proximity switch Code 1->The input signals of Loader hand-A open and close confirmation remained ON longer than 2[S]. 2->The input signals of Loader hand-B open…

Okuma Alarm-C 3795 Hydraulic oil unit Code 1->Hydraulic oil filter was clogged. 2->Hydraulic oil cooling filter was clogged. 3->The temperature of hydraulic oil unit was unusual. 4->Hydraulic oil cooling fan…

Okuma Alarm-C 3796 RSS unit battery error Code 1-> Battery Normal signal of front chuck Clamp pressure confirmation RSS unit is OFF. 2-> Battery Normal signal of front chuck hook…

Okuma Alarm-C 3797 RSS unit communication error Code 1->Communication Normal signal of front chuck Clamp pressure confirmation RSS unit is OFF. 2->Communication Normal signal of front chuck hook position confirmation…

Okuma Alarm-C 3798 Unloader interlock Code 1->The unloader cycle command was not finished within the unloader cycle monitor time. 2->The unloader failed in gripping during the unloader cycle.

Okuma Alarm-C 3800 Transfer data error Incorrect data was transferred from the host. Code 1->Tailsstock tool length data is incorrect as the BCD data.

Okuma Alarm-C 3851 Tool counter faulty Code 1->Tool counter 1 failed. 2->Tool counter 2 failed.

Okuma Alarm-C 3852 Tail stock chuck position Tail stock chuck is not steady position,when tail stock is retract position.

Okuma Alarm-C 3874 Sub chip conveyor error Code 1->The sub chip conveyor failed. The sub chip conveyor alarm signal kept OFF for a second or longer.

Okuma Alarm-C 3849 Tool counter full count A tool counter has counted up. Reset the tool counter. Code 1->Tool counter 1 has counted up. 2->Tool counter 2 has counted up….

Okuma Alarm-C 3850 External alarm An external alarm has occured (external alarm C/ signal is turned off). Code NON->A problem has occurred with an external device. (for loader interface types)…