APPLICATIONS
2.2.7 Torque Controlcont.
— 2-34 —
→ Input T-REF CN1-12
Torque Reference Input For Speed/Torque
Control
→ Input SG CN1-13
Signal Ground for Torque
Reference Input
For Speed/Torque
Control
These signals are used when torque control is se-
lected (bits A and B of memory switch Cn-01).
Motor torque is controlled so that it is proportional
to the input voltage between T-REF and SG.
Standard Setting
Cn-13 = 30: This setting means that 3 V is
equivalent to rated torque.
Examples: +3 V input → Rated torque in forward direction
+9 V input → 300% of rated torque in forward direction
−0.3 V input → 10% of rated torque in reverse direction
Parameter Cn-13 can be used to change the voltage input range.
Example of Input Circuit:
See the figure on the right.
• For noise control, always use twisted-
pair cable.
• Example of Variable Resistor for Speed Setting:
Type 25HP-10B manufactured by Sakae Tsushin Kogyo Co., Ltd.
→ Input V-REF CN1-12
Speed Reference Input For Speed/Torque
Control
→ Input SG CN1-13
Signal Ground for Speed
Reference Input
For Speed/Torque
Control
These signals are used when speed control is se-
lected (bits A and B of memory switch Cn-01).
For normal speed control, always connect these
signal terminals.
Motor speed is controlled so that it is proportional
to the input voltage between V-REF and SG.
Standard Setting
Cn-03 = 500: This setting means that 6 V is equivalent to rated speed (3000 min
−1
).
Examples: +6 V input → 3000 min
−1
in forward direction
+1 V input → 500 min
−1
in forward direction
−3 V input → 1500 min
−1
in reverse direction
2
Reference
torque
(%)
Standard
setting
Input voltage
(V)
Set the
slope in
Cn-13
(TCRFGN).
SG
T-REF
+12 V
Servopack
CN1-12
CN1-13
470 Ω
2kΩ
1/2 W or more
Reference
speed (min
−1
)
Standard
setting
Input voltage
(V)
Set the slope
in Cn-03
(VREFGN).
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