Mitsubishi Electric MELSERVO-J4 MR-J4 A Series Instruction Manual page 77

3. SIGNALS AND WIRING
(b) SP1 (Speed selection 1), SP2 (Speed selection 2), and speed command value
Select any of the speed settings by the internal speed commands 1 to 3 and by VC (Analog speed
command) using SP1 (Speed selection 1) and SP2 (Speed selection 2) as follows.
To select VC (Analog speed command) and a speed command value of internal speed commands 1
to 7, enable SP3 (Speed selection 3) with [Pr. PD03] to [Pr. PD22].
You can change the speed during rotation. To accelerate/decelerate, set acceleration/deceleration
time constant in [Pr. PC01] or [Pr. PC02].
When the internal speed commands are used to command a speed, the speed does not vary with
the ambient temperature.
(2) SA (Speed reached)
SA turns on when the servo motor speed has nearly reached the speed set to the internal speed
command or analog speed command.
(3) Torque limit
As in section 3.6.1 (5)
(Note) Input device
SP2 SP1
0 0
0 1
1 0
1 1
Note. 0: Off
1: On
(Note) Input device
SP3 SP2
0 0
0 0
0 1
0 1
1 0
1 0
1 1
1 1
Note. 0: Off
1: On
Set speed selection
ON
ST1 or ST2
ST1 ST2
OFF
Servo motor speed
ON
SA (Speed reached)
SA( )
OFF
3 - 36
Speed command value
VC (Analog speed command)
Pr. PC05 Internal speed command 1
Pr. PC06 Internal speed command 2
Pr. PC07 Internal speed command 3
Speed command value
SP1
0 VC (Analog speed command)
1 Pr. PC05 Internal speed command 1
0 Pr. PC06 Internal speed command 2
1 Pr. PC07 Internal speed command 3
0 Pr. PC08 Internal speed command 4
1 Pr. PC09 Internal speed command 5
0 Pr. PC10 Internal speed command 6
1 Pr. PC11 Internal speed command 7
Internal speed
Internal speed command 2
1
command 1
2