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3. SIGNALS AND WIRING
Control
mode
Signal Symbol
Connector
pin No.
Functions/applications
I/O
division
P S
Internal torque
limit selection
TL1 When using this signal, make it usable by making the setting of parameter
No.43 to 48.
(Refer to section 3.4.1 (5).)
DI-1
ST1 CN1-3 Used to start the servo motor in any of the following directions.
DI-1 Forward rotation
start
(Note) Input signals
ST2 ST1
Servo motor starting direction
0 0 Stop (servo lock)
ST2 CN1-5 0 1 CCW Reverse rotation
start
1 0 CW
1 1 Stop (servo lock)
Note. 0: ST1/ST2-VIN off (open)
1: ST1/ST2-VIN on (short)
If both ST1 and ST2 are switched on or off during operation, the servo
motor will be decelerated to a stop according to the parameter No.12
setting and servo-locked.
Speed selection 1 SP1 <Internal speed control mode>
Used to select the command speed for operation.
When using SP1 to SP3, make it usable by making the setting of
parameter No.43 to 48.
DI-1
Speed selection 2 SP2 (Note) Input signals DI-1
SP3 SP2 SP1
Servo motor starting direction
SP3 0 0 0 Internal speed command 1 (parameter No.8) DI-1 Speed selection 3
0 0 1 Internal speed command 1 (parameter No.8)
0 1 0 Internal speed command 2 (parameter No.9)
0 1 1 Internal speed command 3 (parameter No.10)
1 0 0 Internal speed command 4 (parameter No.72)
1 0 1 Internal speed command 5 (parameter No.73)
1 1 0 Internal speed command 6 (parameter No.74)
1 1 1 Internal speed command 7 (parameter No.75)
Note. 0: SP1/SP2/SP3-VIN off (open)
1: SP1/SP2/SP3-VIN on (short)
Proportion control PC Connect PC-VIN to switch the speed amplifier from the proportional integral
type to the proportional type.
If the servo motor at a stop is rotated even one pulse due to any external
factor, it generates torque to compensate for a position shift. When the
servo motor shaft is to be locked mechanically after positioning completion
(stop), switching on the proportion control signal (PC) upon positioning
completion will suppress the unnecessary torque generated to compensate
for a position shift.
When the shaft is to be locked for a long time, set the internal torque limit 1
and 2 (parameter No.28 and 76) to make the torque less than the rated
torque at the same time of turning ON the proportion control signal.
DI-1
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