Changing The Status Display Screen; S-Pattern Acceleration/Deceleration - Mitsubishi Electric MELSERVO-J2-Super Series Instruction Manual

6. PARAMETERS

6.2.2 Changing the status display screen

The status display item of the servo amplifier display shown at power-on can be changed by changing the
parameter No.18 (status display selection) settings. In the initial condition, the servo amplifier display
shows the servo motor speed.
For display details, refer to Section 8.2.

6.2.3 S-pattern acceleration/deceleration

In servo operation, linear acceleration/deceleration is usually made. By setting the S-pattern
acceleration/deceleration time constant (parameter No.14), a smooth start/stop can be made. When the S-
pattern time constant is set, smooth positioning is executed as shown below. Note that the time
equivalent to the S-pattern time constant setting increases until positioning (RXnC) is complete.
Parameter No. 18
0 0
Acceleration time
constant
Rated
speed
Preset
speed
Servo motor
speed
0 [r/min]
Ta
Ta Ts
Ta: Time until preset speed is reached
Tb: Time until stop
Ts: S-pattern acceleration/deceleration time constant
Status display on servo amplifier display
at power-on
00: Current position (initial value)
01: Command position
02: Command remaining distance
03: Point table No.
04: Cumulative feedback pulses
05: Servo motor speed
06: Droop pulses
07: For manufacturer setting
08: Analog torque limit voltage
09: Regenerative load ratio
0A: Effective load ratio
0B: Peak load ratio
0C: Instantaneous torque
0D: Within one-revolution position low
0E: Within one-revolution position high
0F: ABS counter
10: Load inertia moment ratio
11: Bus voltage
12: Option unit communication status
Deceleration time
constant
(parameter No. 14)
Setting range 0 to 100ms
6 - 25
Tb Ts
Tb