Nakanishi E3000 Operation Manual page 49

Trouble
When starting the
motor, " E 7 " is
displayed and motor
does not rotate.
An Error Code
occurrs and motor
does not run.
Can not set the
increase or decrease
of the motor rotation
speed.
Can not set the
motor speed to its
maximum allowable
speed.
A blinking dot appears
on Digital Speed
Indicator ⑪ . Cannot
set the desired
rotation speed.
Spindle does not
rotate or rotate
smoothly.
Overheating during
rotation.
Abnormal vibration
or noise during
rotation.
94
Cause
Low air pressure.
An Error has occurred. (Error LED
(ERROR) ⑲ is lit.)
Motor Fixed Speed is set in the
parameter.
Either the required speed value is higher
than the maximum rotation speed of the
motor, or the upper limit of the rotational
speed has been set in parameter
Parameter is
Air Input Monitoring Override is set in
the parameterto ON and the motor's
maximum speed has been limited to
- 1
30 , 000 min (rpm).
Gear Ratio is set to a value other than " 1 . 0 ". Check the setting of Gear Ratio. (Refer to
The spindles bearings have been damaged. Replace the ball bearings.
The motor has been damaged.
Cutting debris has contaminated the ball
bearings, and the ball bearings are
damaged.
The tool shank is bent.
Cutting debris has contaminated the ball
bearings.
The spindle ball bearings have been
damaged.
Adjust to the air pressure 0 . 25 - 0 . 3 MPa
( 36 . 3 - 43 . 5 psi).
Check P 81 " 17 - 3 Resetting System
after Error Codes. Refer to Table 8 ".
Error will not be released until cause of
the error has been removed.
Release parameter
(Refer to P89 " 18 - 4 ③
Motor Speed " section.)
Set the Maximum Rotation Speed to a
value less than the Motor Rotation Speed
set in Parameter
. (Refer to P 89 " 18 - 4 ④
Maximum Motor Speed " section.)
. Check the setting of parameter
(Refer to P 86 " 18 - 3 ⑧
Motor Speed Control Voltage / DC+ 10 V
Signal Method " section.) (Refer to P 91
" 18 - 4 ⑧
Control Voltage / DC+ 10 V Signal Method "
section.)
Check the setting of parameter
(Refer to P91 " 18 - 4 ⑦
Air Input Monitoring Override " section.)
P 66 " 15 - 2 - 1 ( 3 ) Setting Gear Ratio "
section.
(Return to NAKANISHI dealer service.)
Replace the motor.
(Return to NAKANISHI dealer service.)
Replace the ball bearings.
(Return to NAKANISHI dealer service.)
Replace the cutting tool.
Replace the ball bearings.
(Return to NAKANISHI dealer service.)
Inspection / Corrective Active
.
Setting Fixed
.
Selection of Motor Speed
Setting
.
Selection of
.
Selection of