5-81
5-16 User Parameters
5
Operating Functions
Speed and Torque Control Parameters (Pn50 and Higher)
• Use this parameter to set the relation between the voltage applied to the Speed Command Input
(REF: CN1 pin 14) and the Servomotor speed.
• Refer to 5-2 Speed Control on page 5-3 for information on speed control.
• Refer to 5-4 Torque Control on page 5-8 for information on torque control.
Explanation of Settings
• Use this parameter to reverse the polarity of the Speed Command Input (REF: CN1 pin 14) to
change the Servomotor rotation direction without reversing the polarity of the commands from the
host controller.
• This parameter is set to 0 by default (
counterclockwise (reverse) for positive commands) for
compatibility with all OMNUC W-Series Servo Drives.
• This parameter is disabled if the Zero Speed Designation/Speed Command Direction Switch
(Pn06) is set to 2.
• The operation of the Servomotor may be abnormal if the polarity of the speed command signal
from the Position Control Unit does not agree with the setting of this parameter when the Servo
Drive is in Speed Control Mode and the Servo Drive is used in combination with an external
Position Control Unit.
• Use this parameter to adjust the offset of the Speed Command Input (REF: CN1 pin 14).
• The offset amount is approximately the set value times 0.3 mV.
• There are two ways to adjust the offset.
• Manually
• Automatically
• The manual adjustment is as follows:
• To adjust the offset for individual Servo Drives, accurately input 0 V to the Speed/Torque
Command Input (REF/TREF1) (or connect REF/TREF1 to the signal ground), and then set this
parameter so that the Servomotor does not rotate.
• If you use a position loop in the host controller, set this parameter so that there are no
accumulated pulses at servo lock status.
• The automatic adjustment is as follows:
• This parameter will be automatically set when automatic offset adjustment is executed. Refer to
Automatic Offset Adjustment on page 6-22 for the procedure.
Pn50
Speed Command Scale
Setting range 10 to 2000 Unit (r/min)/V Default setting 300
Power OFF→ON
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Pn51
Command Speed Rotation Direction Switch
Setting range 0 or 1 Unit --- Default setting 0
Power OFF→ON
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Setting Explanation
0
Direction of motor rotation:
Clockwise (forward) for positive commands when viewing the end of the shaft
1
Direction of motor rotation:
Counterclockwise (reverse) for positive commands when viewing the end of the shaft
Pn52
Speed Command Offset Adjustment
Setting range −2047 to 2047 Unit 0.3 mV Default setting 0
Power OFF→ON
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