Specifications

21
MITSUBISHI ELECTRI
C
MELSERVO MR-J2S
SERVO AMPLIFIERS
BASICS
Protective Functions/ Safety Features/ Alarms and Warnings
LED display Meaning Description
Alarms
AL.10 Undervoltage Is activated, if the voltage of the power supply falls below a certain level or if a sudden power outage of more than 15 ms occurs.
AL.12 Memory error 1 Is activated, if an error is detected in the RAM memory of the printed board.
AL.13 Clock error Is activated, if an error is detected in the printed board.
AL.15 Memory error 2 Is activated, if an error is detected in the EEPROM memory of the printed board.
AL.16 Encoder error 1 Is activated, if a different type of encoder is detected and communication with the encorder cannot be performed accurately.
AL.17 Board error 2 Is activated, if an error is detected in a board component of the servo amplifier.
AL.19 Memory error 3 Is activated, if an error is detected in the ROM memory of the printed board.
AL.1A Motor combination error Is activated, if a wrong combination of servo amplifier and motor exists,
AL.20 Encoder error 2 Is activated, if an error is detected in the encoder or encoder cable.
AL.24 Motor output ground fault Is activated, if a ground fault occured at the servo motor outputs of the servo amplifier.
AL.25 Absolute position erase
Is activated, if the absolute position data is errornous or if the power was switched on for the first time in the absolute position detection
system.
AL.30 Regenerative alarm
Is activated, if the permissible regenerative power of the built-in regenerative brake resistor or regenerative brake option is exceeded or if
the regenerative transistor is faulty or cooling fan has stopped (MR-J2S-200A, MR-J2S-300A).
AL.31 Overspeed Is activated, if the motor rotation speed is detected to have exceeded the permissible rotation speed.
AL.32 Overcurrent Is activated, if an excess current is detected.
AL.33 Overvoltage Is activated, if an excess converter voltage is detected.
AL.35 Command pulse error Is activated, if an excess frequency command pulse is input.
AL.37 Parameter error Is activated, if parameters are detected to beoutside the setting range through a parameter check performed when the power is turned ON.
AL.45 Main circuit device overheat Is activated, if a main circuit device is overheated.
AL.46 Servo motor overheat Is activated by the thermal protector inside the encoder due to motor overheating.
AL.50 Overload 1 Is activated, if an overload is detected in the motor or servo amplifier.
AL.51 Overload 2 Is activated, if an overload is detected in the motor or servo amplifier.
AL.52 Excess error
Is activated, if the difference between the input pulse and return pulse is detected to have exceeded 80 k pulses when operating in position
control mode.
AL.8A Serial communication time-out Is activated, if the RS232C or RS422 communication is stopped for longer than the time set by parameter.
AL.8E Serial communications error Is activated, if an error occurs in the serial communication between the servo amplifier and the communication device.
88888 System error (watchdog) Is activated, if a system error is detected.
Warnings
A.92 Battery disconnection error Is activated, if the battery wire connected to the encoder becomes disconnected or if the battery voltage falls.
A.96 Origin set error Is activated, if the origin is not set.
A.9F Battery warning Is activated, if the battery voltage falls.
A.E0 Excess regeneration warning Is activated, if the load of the regeneration resistor reaches 85 % of the alarm level.
A.E1 Overload warning Is activated, if the unit reaches 85 % of the overload alarm level.
A.E3 ABS data counter warning Is activated, if there is an error in the backup data of the absolute data counter.
A.E5 ABS time-out warning Is activated, if there is a time-out error during the forwarding of absolute data.
A.E6 Servo emergency stop Is activated, if an external emergency stop signal has been lifted.
A.E9 Main circuit OFF warning Is activated, if the main circuit voltage (P-N) is below 215 V when the servo ON signal (SON) is turned ON.
A.EA ABS servo ON warning Is activated, if the servo ON signal does not go ON within 1 second after the ABS forwarding mode (D13) is turned ON.
The J2 servo amplifier possesses the safety
features described below. In order to pro
-
tect the unit when a safety circuit is acti
-
vated, the output is suspended by cutting
OFF the power to the transistor base.
When this happens, the dynamic brake is
activated and stops the motor. An alarm
number is displayed on the servo amplifier
or personal computer. After eliminating
the cause, close the reset terminal (RES) or
turn OFF the control power and reset.