Nakanishi E2280 Operation Manual page 40

CAUTION
・ When the Warning LED 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.
・ When an error occurs due to internal damage of the CONTROLLER, the Error Signal cannot be reset.
Please send the Motor spindle and CONTROLLER to a NAKANISHI dealer for repair.
17 - 4 Torque Over Load
CAUTION
If you constantly operate the system in an overload condition, even for short periods of time, the
CONTROLLER will overheat and damage to the CONTROLLER and motor spindle are possible.
NAKANISHI recommends only continuous duty operation (LOAD LEDs with 3 LEDs lit) : Torque Load
Monitor (LOAD) Voltage should be less than 5V.
When the Load Monitor LED (LOAD) ⑭ lights 4 or more LEDs (3 Green LEDs and 1 or more yellow LEDs) an over-
load condition exists. During a motor overload period, the following will occurs :
(1) Warning LED (WARNING) ㉓ will blink.
(2) Warning Code " A3 " is displayed on the Digital Speed Indicator ⑬ .
(3) Pin No. 20 (WARNING) of the External Input / Output Connector A ③ is ' ON (Closed) '.
Overload operation is considered a short - term operation mode. The allowable operation time depends on the
number of lighted LEDs on the Load Monitor LED (LOAD) ⑭.
The allowable time is detailed below.
(1) Load Monitor LED (LOAD) ⑭ 4 LEDs (Green LED 3, Yellow LED 1) : 30 Seconds
(2) Load Monitor LED (LOAD) ⑭ 5 LEDs (Green 3, Yellow 2) : 10 Seconds
(3) Load Monitor LED (LOAD) ⑭ 6 LEDs (Green 3, Yellow 2, Red 1) : 5 Seconds
When the allowable time is exceeded the motor will stop and the following occurs :
(1) Control Button (CTRL) ⑲ lights.
(2) Error Code " E8 " is displayed on the Digital Speed Indicator ⑬ .
(3) Pin No. 8 (ERR) of the External Input / Output Connector A ③ is ' ON (Closed) '.
* Setting parameter
P104 " 18 - 4 ① Setting of Error Output Mode " section).
Error Signal, allows the signal to be a Normally Open or Normally Closed State (Refer to
95