Protect Function - Nakanishi E2280 Operation Manual

17. PROTECT FUNCTION

17 - 1 WARNING FUNCTION
CAUTION
When the Warning LED (WARNING) ㉓ on the CONTROLLER blinks, conditions exist that could result
in dangerous operation.
Check operating conditions and continue to use only after correcting the problem.
Always check the CONTROLLER, motor spindle and the condition of the cooling air prior to use. This will help
prevent system errors that will result in non - operational conditions.
(1) The WARNING LED (WARNING) ㉓ will blink.
(2) The Warning Code (listed in Table. 8) will be displayed on the Digital Speed Indicator ⑬ .
(3) A Warning Signal is output to the " WARNING (PIN No. 20 : WARNING) " of Input / Output Connector.
In Warning state, the motor will not stop automatically.
Table. 8
Warning Code Warning Function
A0 Motor Cord
A1 Low Air Pressure
A2 CONTROLLER Overheat
A3 Over Load
A4 Emergency Stop Signal
A5 Over Air Pressure
CAUTION
When the Warning LED (WARNING) ㉓ blinks while the control is in Mode AUTO, be sure to confirm
the Warning Code displayed on the Digital Speed Indicator ⑬ by referring to the " Warning Code " in
Table. 8.
17 - 2 Detection of unsafe operating conditions
Always check the CONTROLLER, motor spindle and the condition of the cooling air prior to operation. This will help
prevent system errors that will result in improper operating conditions.
When an Error Occurs, the following events may occur :
(1) Motor stops.
(2) The Error LED (ERROR) ㉒ will light.
(3) The Error Code in Table. 9 will displayed on Digital Speed Indicator ⑬ .
(4) The illumination of the CONTROLLER will blink (Refer to P103 " 18 - 3 ⑫
Brightness Fig. 36, 37 ").
(5) An Error signal is output to the " Error (PIN No. 8 : ERR) " of Input / Output Connector A ③ .
Trouble
Motor Code is not connected. Damage of the Motor Cord or
contact failure of the Connector occurs. If the motor is operated
in this state, Error " E3 " will be displayed.
Low Air Pressure during motor rotation. If the air pressure
remains low for 4 seconds, Error " E7 " will be displayed.
CONTROLLER is Overheated. If the temperature increases
further, Error " E4 " will be displayed.
Motor Torque Load exceeding safe limits. If the overload state
continues, Error " E8 " will be displayed.
Emergency Stop Signal ' OFF (Open) ' in Emergency Stop
Mode Condition. If the motor is operated in this state, Error
" EE " will be displayed.
Excessive Air Pressure. The motor will not stop.
Selection of Illumination
93