Instructions On Startup; Troubleshooting At Startup - Mitsubishi Electric MELSERVO-JET MR-JET-G-N1 Series User Manual

4.2

Instructions on startup

Instructions for power-on
• In the absolute position detection system using a rotary servo motor, powering on the servo amplifier for the first time
triggers [AL. 025 Absolute position erased]. Thus, the servo amplifier will not be brought into the servo-on state. Shut off the
power once, and cycle the power to deactivate the alarm.
• If the power is switched on while the servo motor is rotated by an external force, an alarm may occur. Make sure that the
servo motor is not operating before switching on the power. Also refer to the manuals of servo motor and encoder for
details.
Stop
If any of the following situations occurs, the servo amplifier suspends and stops the operation of the servo motor. If the servo
motor is operated by the network command, the servo motor may be stopped by the controller command.
Operation/command
Alarm occurrence
EM2 (Forced stop 2) off
Limit switch off
Instructions for network disconnection
To turn off the system power and disconnect the servo amplifier from the network, specific procedures may be required. For
details, refer to "Establishing and disconnecting the communication" in the following manual.
MR-JET-G-N1 User's Manual (Communication Function)
4.3

Troubleshooting at startup

Investigation by using MR Configurator2.
By using MR Configurator2, the cause of the servo motor failures to rotate can be investigated.
The cause of the servo motor failures to rotate is acquired from the servo amplifier of the target axis, and is displayed on "No
Motor Rotation". Blank is displayed when no cause exists. "- - - -" is displayed when the cause of no motor rotation is off-line
or the cause cannot be acquired.
Stopping condition
The servo motor decelerates to a stop. There are also alarms that activate and stop the dynamic brake. Refer to the
following for the details of alarm.
MR-JET User's Manual (Troubleshooting)
The servo motor decelerates to a stop. [AL. 0E6 Servo forced stop warning] occurs. In the torque mode, EM2 functions the
same as EM1.
If LSP (Forward rotation stroke end), LSN (Reverse rotation stroke end), FLS (Upper stroke limit), or RLS (Lower stroke
limit) is turned off, the servo motor will stop slowly and become in the servo-lock state. Operation in the opposite direction
is possible.
4 STARTUP
4.2 Instructions on startup
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