Kitagawa MR250RAE13, Instruction Manual

Page: 37 / 50

31
Symptom
⑤：
Table is not clamped or unclamped
Possible causes Corrective actions
Faulty solenoid valve Replace the solenoid valve
Faulty clamp/unclamp confirming device
(pressure switch) Check and replace the clamp/unclamp
confirming device (pressure switch)
Damage or connection failure of working
fluid pipe for clamp Check the piping for connection, and
replace
Supply pressure of working fluid for
clamp is lower than specified value Change to appropriate value according to
the specification
Back pressure acts to the air pressure
exhaust port of solenoid valve, as the air
purge port in the motor case is blocked. Remove the cause that blocks the air
purge port.
Faulty clamp device Stop the use of NC rotary table
immediately.
Please contact the sales agent.
Fault due to damaged NC rotary table or
expired life of components Stop the use of NC rotary table
immediately.
Please contact the sales agent.
Symptom
⑥：
Index accuracy error
Possible causes Corrective actions
The unit is overloaded during rotation Compare NC rotary table specification with
work condition to make improvement
Workpiece is dislocated due to low
clamp torque Compare NC rotary table specification with
cutting condition to make improvement
Zero return position is dislocated due to
faulty zero point shift adjustment Check the zero point and zero point shift
amount
Faulty zero point dog position
adjustment Adjust the zero point dog
Faulty zero return deceleration signal
device Check the zero return deceleration signal
device and replace the proximity switch
Faulty clamp operation
See “Symptom
⑤
”
Inappropriate backlash amount Adjust the backlash
Inappropriate backlash compensation
amount Change the backlash compensation
amount
Worm shaft locking failure in backlash
adjustment Readjust
Fault due to damaged NC rotary table or
expired life of components Stop the use of NC rotary table
immediately.
Please contact the sales agent.