Mitsubishi Electric MELSERVO MR-J4-B-RJ Series, Instruction Manual

Page: 163 / 174

4. DRIVE RECORDER
4 - 8
Table 4.4 Signal explanations
Signal name Description Unit
Analog
Motor speed The servo motor speed is displayed. [r/min]
Torque The servo motor torque is displayed with current value.
The value of torque being occurred is displayed in real time considering a rated torque as
100%. [0.1%]
Current command This indicates current command applying to the servo motor. [0.1%]
Droop pulses (1 pulse) This indicates the number of droop pulses in the deviation counter per pulse. [pulse]
Droop pulses
(100 pulses) This indicates the number of droop pulses in the deviation counter per 100 pulses. [100 pulses]
Speed command This indicates speed command applying to the servo motor. [r/min]
Bus voltage This indicates bus voltage at the converter of the servo amplifier. [V]
Effective load ratio The continuous effective load torque is displayed. This indicates effective value for past
15 seconds. [0.1%]
ABS counter The travel distance from the home position is displayed as multi-revolution counter value
of the absolution position encoder in the absolution position detection system. [rev]
Within one-revolution
position
Position within one revolution is displayed in encoder pulses. [16 pulses]
Encoder error counter
1 This indicates the number of cumulative errors during a communication with the encoder. [times]
Encoder error counter
2 The same as encoder error counter 1. [times]
U-phase current
feedback
This indicates U-phase current value applying to the servo motor per internal unit.
V-phase current
feedback
This indicates V-phase current value applying to the servo motor per internal unit.
Regenerative load
ratio
The ratio of regenerative power to permissible regenerative power is displayed in %. [0.1%]
Command pulse
frequency
This indicates the command pulse frequency. [1.125 kpps]
Command pulse
frequency (speed unit)
This converts and indicates command pulse frequency per servo motor speed. [r/min]
Motor-side/load-side
position deviation
(100 pulses)
This indicates a deviation between motor-side position and load-side position during fully
closed loop control.
The number of pulses displayed is in the load-side encoder pulse unit. [100 pulses]
Motor-side/load-side
speed deviation
This indicates a deviation between motor speed and load-side speed during fully closed
loop control. [r/min]
Load-side droop
pulses (100 pulses)
Droop pulses of the deviation counter between a load-side position and a command are
displayed. [100 pulses]
Internal temperature
of encoder
Inside temperature of encoder detected by the encoder is displayed. [ ˚ C]
Temperature of motor
thermistor The thermistor temperature is displayed for the rotary servo motor with thermistor, linear
servo motor with thermistor, and direct drive motor. [ ˚ C]
Overload alarm margin This indicates margins to the levels which trigger [AL. 50 Overload 1] and [AL. 51
Overload 2] in percent. When the value becomes 0%, the overload alarm will occur.
[0.1%]
Error excessive alarm
margin This indicates a margin to the level which trigger the error excessive alarm in encoder
pulse unit. When the value becomes 0 pulse, the error excessive alarm will occur. [pulse]
Load-side encoder
information 1
The position in load-side encoder 1-revolution is displayed. This indicates a Z-phase
counter for the INC linear encoder. The value is counted up from 0 based on the home
position (reference mark). This indicates an absolute position for the ABS linear encoder.
It is displayed in load-side encoder pulse unit. [pulse]
Load-side encoder
information 2
Multi-revolution counter of the load-side encoder is displayed. [pulse]
Load-side encoder
error counter 1
This indicates the number of cumulative errors during a communication with the load-side
encoder. [times]
Load-side encoder
error counter 2
The same as load-side encoder error counter 1. [times]