YASKAWA SGD7S Product Manual page 212

Relation between the /SPD-D (Motor Direction Input) Signal
and V-REF (Speed Reference Input) Signal
The following graphs show the relationship between the V-REF (Speed Reference Input) signal
and the speed reference depending on whether the /SPD-D signal is ON or OFF.
Motor speed [min
- 12
/SPD-D (Motor Direction Input) Signal: OFF
Speed Reference Input Example
Example
If Pn300 is set to 600, the motor would operate at the rated speed for 6.00 V.
• For Rotary Servomotors
Speed Ref-
erence Input
+6 V
-3 V
+1 V
• Linear Servomotors
Speed Ref-
erence Input
+6 V
-3 V
+1 V
-1 ]
Speed reference
voltage [V]
0 +12
/SPD-D Rotation
Signal Direction
ON Reverse
OFF Forward
ON Forward
OFF Reverse
ON Reverse
OFF Forward
/SPD-D Rotation
Signal Direction
ON Reverse
OFF Forward
ON Forward
OFF Reverse
ON Reverse
OFF Forward
6.5.1 Basic Settings for Speed Control
-1
Motor speed [min ]
Speed reference
voltage [V]
- 12 0
/SPD-D (Motor Direction Input) Signal: ON
Motor
For SGM7A Servomotor
Speed
Rated
-1
-3000 min
motor
-1
3000 min
speed
1/2 of rated -1
1500 min
motor
-1
-1500 min
speed
1/6 of rated
-1
-500 min
motor
-1
500 min
speed
Movement For SGLGW-30A Linear
Speed Servomotor
Rated -1500 mm/s
motor
1500 mm/s
speed
1/2 of rated 750 mm/s
motor
-750 mm/s
speed
1/6 of rated -250 mm/s
motor
250 mm/s
speed
6.5 Speed Control
+12
6
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