Mitsubishi Electric MELSERVO MR-J2 C Series, Instruction Manual

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5. PARAMETERS
5.2.2 Changing the status display screen
The status display item of the servo amplifier display and the display item of the external digital display
(MR-DP60) 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 and
the MR-DP60 shows the current position.
For display details, refer to Section 7.2.
Status display on servo amplifier display at power-on
0: Servo motor speed (initial value)
1: Regenerative load ratio
2: Effective load ratio
3: Peak load ratio
4: Within one-revolution position
5: ABS counter
6: Load inertia moment
Parameter No. 18
Status display of MR-DP60
0: Current position (initial value)
1: Command position
2: Command remaining distance
3: Point table No.
4: Cumulative feedback pulses
5: Servo motor speed
6: Droop pulses
7: Override
8: Torque limit voltage
9: Regenerative load ratio
A: Effective load ratio
B: Peak load ratio
C: Within one-revolution position
D: ABS counter
E: Load inertia moment ratio
5.2.3 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 is complete.
Servo motor
speed
0 [r/min]
Acceleration time
constant
Rated
speed
Tb Ts
Ta Ts
Tb
Deceleration time
constant
Ta
Ta: Time until preset speed is reached
Tb: Time until stop
Ts: S-pattern acceleration/deceleration time constant
(parameter No. 14)
Setting range 0 to 100ms
Preset
speed
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