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Sigma II User's Manual
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Example of Contact Input Speed Control Operation
The following example shows operation by contact input speed control. Using the
soft start function reduces physical shock when the speed is changed.
Motor speed
+SPEED 3
+SPEED 2
+SPEED 1
-SPEED 1
-SPEED 2
-SPEED 3
/P-CL (/SPD-A)
/N-CL (/SPD-B)
/P-CON (/SPD-D)
Note: The soft start function is available only when contact input speed control is used with Pn000.1 set to
5, and is not available when a pulse reference input is used. If the Contact Input Speed Control Mode
is switched to Pulse Reference Input Mode while the servomotor is operating at speed 1, speed 2, or
speed 3, the servo amplifier will not receive a reference pulse until the positioning completed signal /
COIN is output. Always start pulse reference output from the host controller after a positioning com-
pleted signal is output from the servo amplifier.
Motor Speed
0rpm
/COIN
Pulse
Reference
/P-CL (/SPD-A)
/N-CL (/SPD-B)
Selected Speed
1.
The above figure illustrates signal generation timing when the soft start function is used.
2.
The value of t1 is not affected by the use of the soft start function. A maximum 2ms delay
occurs when the /PC-L(/SPD-A) or /N-CL(/SPD-B) signal is read. 1
Speed 2
Speed 1
Stop
0
OFF
OFF
ON
OFF
ON
ON
ON
ON
Signal Generation Timing for Position Control
OFF
ON
ON
ON
ON
OFF
Speed 1
Speed 2
Speed 3
Chapter 5: Parameter Settings and Functions
Speed 3
Set acceleration and
deceleration at Pn305 and
Pn306 (soft start times).
Stop
Speed 1
Speed 2
ON
OFF
OFF
ON
OFF
OFF
ON
ON
ON
OFF
OFF
OFF
t1
OFF
OFF
Pulse reference
5-37
Stop
Speed 3
ON
OFF
OFF
OFF
OFF
OFF
t1
OFF
ON
Speed 1
t1 > 2ms
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