Mitsubishi Electric MELSERVO-JN Series, Instruction Manual

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5. DISPLAY AND OPERATION SECTIONS
5.3.3 Status display list
POINT
Refer to appendix 4 for the measurement point.
The following table lists the servo statuses that may be shown.
Name Symbol Unit Description
Display
range
Cumulative feedback
pulses in pulse unit
CL pulse
Feedback pulses from the servo motor encoder are counted and
displayed.
Press the "SET" button to reset the display value to zero.
Negative values are indicated by the lit decimal points in the upper two
digits.
-999 to 999
Cumulative feedback
pulses in 1000 pulse unit
CH 1000pulses -999 to 999
Servo motor speed in
10r/min unit
r 10r/min The servo motor speed is displayed in 10r/min unit. -540 to 540
Servo motor speed in
r/min unit
r1 r/min The servo motor speed is displayed in r/min unit. -999 to 999
Droop pulses in pulse unit EL pulse
The number of droop pulses in the deviation counter is displayed.
When the servo motor is rotating in the reverse direction, the decimal
points in the upper two digits are lit.
The displayed number of pulses is in the same pulse unit as the servo
motor encoder resolution.
-999 to 999
Droop pulses in 1000
pulse unit
EH 1000pulses -999 to 999
Cumulative command
pulses in pulse unit
PL pulse
The position command input pulses are counted and displayed.
As the value displayed is not yet multiplied by the electronic gear
(CMX/CDV), it may not match the indication of the cumulative feedback
pulses.
Press the "SET" button to reset the display value to zero.
Reverse rotation is indicated by the lit decimal points in the upper two
digits.
-999 to 999
Cumulative command
pulses in 1000 pulse unit
PH 1000pulses -999 to 999
Command pulse
frequency
n kpps
The frequency of the position command input pulses is displayed.
The value displayed is not multiplied by the electronic gear (CMX/CDV).
The value in excess of ±999 can be counted up to ±1500. However, the
counter shows only the lower three digits since the servo amplifier
display is three digits.
-999 to 999
Regenerative load ratio L %
The ratio of regenerative power to permissible regenerative power is
displayed in %.
0 to 100
Effective load ratio J %
The continuous effective load current is displayed.
The effective value in the past 15[s] is displayed relative to the rated
current of 100%.
0 to 300
Peak load ratio b %
The maximum current is displayed.
The highest value in the past 15[s] is displayed relative to the rated
current of 100%.
0 to 400
Instantaneous torque T %
Torque that occurred instantaneously is displayed.
The value of the torque that occurred is displayed in real time relative to
the rate torque of 100%.
0 to 400
Within one-revolution
position in pulse unit
Cy1 pulse
Position within one revolution is displayed in encoder pulses.
The value returns to 0 when it exceeds the maximum number of pulses.
The value is incremented in the CCW direction of rotation.
The value is decremented in the CW direction of rotation.
0 to 999
Within one-revolution
position in 1000 pulse unit
Cy2 1000pulses 0 to 999
Load to motor inertia
moment ratio
dC
Multiplier
( 10
1
)
The estimated value of the load to motor inertia ratio is displayed.
0 to 300
Bus voltage Pn
Status of the bus voltage is displayed in five steps.
5: Overvoltage (About 400V or more)
4: High voltage (About 375V or more)
3: Normal
2: Low voltage (About 200V or less)
1: Undervoltage (About 160V or less)
Refer to the
contents.
Settling time ST ms
Settling time is displayed.
The value in excess of 999 can be counted. However, the counter
shows only the lower three digits since the servo amplifier display is
three digits.
0 to 999