APPENDIX
App. - 19
App. 9 Optional data monitor function
The optional data monitor function is used to monitor data in the servo amplifier with the servo system
controller. With the optional data monitor, the following data types of registered monitor can be set.
For details of usage, unit of data type, and others, refer to the manuals for servo system controllers.
Data type Description
Effective load ratio The continuous effective load current is displayed.
The effective value is displayed considering a rated current as 100%.
Regenerative load ratio The ratio of regenerative power to permissible regenerative power is displayed in %.
Peak load ratio The maximum torque generated is displayed.
The highest value in the past 15 s is displayed, with the rated torque being 100 %.
Position feedback Feedback pulses from the servo motor encoder are counted and displayed.
Encoder position within one revolution The position in servo motor-side 1-revolution is displayed in the encoder pulse unit.
When the value exceeds the maximum number of pulses, it resets to 0.
Encoder multiple revolution counter The rotation amount of the servo motor is displayed. The value is counted up by one per
servo motor revolution.
Load inertia moment ratio The set ratio of the load inertia moment to the servo motor shaft inertia moment is
displayed.
Model loop gain The model loop gain value is displayed.
Main circuit bus voltage The voltage of main circuit converter is displayed.
Cumulative current value The cumulative current value of the servo motor is displayed.
Servo motor speed The servo motor speed is displayed.
Module power consumption The module power consumption is displayed.
The positive value is displayed in power running. The negative value is displayed in
regeneration.
Module integral power consumption The module integral power consumption is displayed.
Instantaneous torque The instantaneous torque is displayed.
The value of torque being occurred is displayed in real time considering a rated torque as
100%.
Servo motor thermistor temperature The thermistor temperature is displayed for the servo motor with a thermistor.
For the servo motor without thermistor, "9999" is displayed.
For the servo motor with a thermistor, refer to each servo motor instruction manual.
Disturbance torque The difference between the torque necessary to drive the servo motor and the actually
required torque (Torque current value) is displayed as the disturbance torque.
Overload alarm margin The margins to the levels which trigger [AL. 50 Overload 1] and [AL. 51 Overload 2] are
displayed in percentage.
Error excessive alarm margin The margin to the level which triggers the error excessive alarm is displayed in units of
encoder pulses.
The error excessive alarm occurs at 0 pulses.
Settling time The time (Settling time) after command is completed until INP (In-position) turns on is
displayed.
Overshoot amount The overshoot amount during position control is displayed in units of encoder pulses.
Internal temperature of encoder The internal temperature of encoder is displayed. When an encoder communication error
occurs, the last value will be displayed before the error.
This is available with servo amplifiers with software version C4 or later.
Servo command value The position command from the controller is displayed.
Torque command The torque command from the controller is displayed.
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