Mitsubishi Electric MELSERVO MR-J3 A Series, Instruction Manual

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6. DISPLAY AND OPERATION SECTIONS
6.4 Diagnostic mode
Name Display Description
Not ready.
Indicates that the servo amplifier is being initialized or an alarm has
occurred.
Sequence
Ready.
Indicates that the servo was switched on after completion of
initialization and the servo amplifier is ready to operate.
External I/O signal
display
Refer to section 6.7.
Indicates the ON-OFF states of the external I/O signals.
The upper segments correspond to the input signals and the lower
segments to the output signals.
Lit: ON
Extinguished: OFF
Output signal (DO)
forced output
The digital output signal can be forced on/off. For more information,
refer to section 6.8.
Jog feed
Jog operation can be performed when there is no command from the
external command device.
For details, refer to section 6.9.2.
Positioning
operation
The MR Configurator MRZJW3-SETUP211E is required for
positioning operation. This operation cannot be performed from the
operation section of the servo amplifier.
Positioning operation can be performed once when there is no
command from the external command device.
For details, refer to section 6.9.3.
Motorless
operation
Without connection of the servo motor, the servo amplifier provides
output signals and displays the status as if the servo motor is
running actually in response to the external input signal.
For details, refer to section 6.9.4.
Machine
analyzer
operation
Merely connecting the servo amplifier allows the resonance point of
the mechanical system to be measured.
The MR Configurator MRZJW3-SETUP211E is required for
machine analyzer operation.
For details, refer to section 12.8.
Test
operation
mode
Amplifier
diagnosis
Simple diagnosis as to correct function of the input/output interface
of the servo amplifier can be made. To diagnose the amplifier, the
diagnosis cable (MR-J3ACHECK) and MR Configurator MRZJW3-
SETUP211 are necessary.
For details, refer to section 12.8.
Software version low
Indicates the version of the software.
Software version high
Indicates the system number of the software.
Automatic VC offset
If offset voltages in the analog circuits inside and outside the servo
amplifier cause the servo motor to rotate slowly at the analog speed
command (VC) or analog speed limit (VLA) of 0V, this function
automatically makes zero-adjustment of offset voltages.
When using this function, make it valid in the following procedure.
Making it valid causes the parameter No. PC37 value to be the
automatically adjusted offset voltage.
1) Press "SET" once.
2) Set the number in the first digit to 1 with "UP"/"DOWN".
3) Press "SET".
You cannot use this function if the input voltage of VC or VLA is
0.4V or more.