9. SPECIFICATIONS
9－38
(2) External analog current limit input
The forward revolution driving current (positive side) and the backward revolution driving current
(negative side) can both be independently limited externally (when parameter Func1 bit0 is set at "1").
Regarding the relationship with the motor armature current, the current is limited to 2 V/the rated current
(IR) by the applied motor. The same limit value for the backward revolution driving current as that for
forward revolution can be selected. Switching of the polarity between positive and negative is also
available (see the description of Func1 in chapter 7).
Fig. 9-19 shows the relationship between the set voltage and the current limit value.
Fig. 9-19 Relationship Between Set Voltage and Current Limit Value
(3) Torque compensation input
For the torque compensation input/motor-generated torque characteristics, refer to Fig. 9-17 (the same
as the torque command input of the torque control type).
This input is effective for increasing the acceleration time or switching the quadrant.
1 If a set value exceeds the instantaneous maximum stall armature current (Ip) of the
Servomotor, it is saturated at Ip.
2 To lock the motor by means of a bump stop by applying an external current limit, the
current limit value must be below the rated armature current.
Armature current
0
(Approx. 0.6 V) 2.0
IR
1
Set voltage (V)
(a) Forward revolution current limit (PIL)
Armature current
0
(Approx.
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