Mitsubishi Electric MELSERVO-JN Series Instruction Manual page 372

General-purpose ac servo, general purpose interface servo amplifier/motor
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13. POSITIONING MODE
3) Operation
Choosing the point table using DI0 to DI2 and turning ST1 ON starts a motion in the forward rotation
direction over the travel distance of the position data at the preset speed and acceleration time
constant.
Turning ST2 ON starts a motion in the reverse rotation direction according to the values set to the
selected point table.
Automatic operation mode selection
Point table selection
Start
(c) Automatic operation timing chart
The timing chart is shown below.
Automatic/manual
selection (MD0)
Servo-on (SON)
Point table No.
Forward rotation start
(ST1)
Reverse rotation start
(ST2) (Note1)
Forward
rotation
Servo motor
speed
Reverse
rotation
In-position (INP)
Rough match (CPO)
(Note 3)
Travel completion
(MEND)
Point table No. output
(PT0 to PT2)
Ready (RD)
Trouble (ALM)
Note 1. Reverse rotation start (ST2) is invalid in the absolute value command system.
2. External input signal detection delays by the input filter setting time of parameter No. PD19. Additionally, make up a
sequence that changes the point table selection ahead of time by considering delays in output signal sequence from the
controller and variations of a signal change due to hardware.
3. If the over load tough drive function is enabled by setting parameter No. PA04 to "
overload tough drive. MEND turn-on also delays together with INP.
Item
Automatic/manual selection (MD0)
Point table No./Program No. selection 1 (DI0)
Point table No./Program No. selection 2 (DI1)
Point table No./Program No. selection 3 (DI2)
Forward rotation start (ST1)
Reverse rotation start (ST2)
ON
OFF
ON
OFF
6ms or more (Note 2)
ON
OFF
6ms or more
ON
OFF
0r/min
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Device/Parameter used
1
3ms or less
Point table
No. 1
13 - 21
Description
Turn MD0 ON.
Refer to (1) (a) 3) in this section.
Turn ST1 ON to start motion in
forward rotation direction.
Turn ST2 ON to start motion in
reverse rotation direction.
2
6ms or more (Note 2)
6ms or more
Point table
No. 2
1
1", INP turn-on delays during the
2

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