5 Adjustments
5-63
(4) Compensation Operation
This section describes the operation that is performed for backlash compensation.
Note: The following figures are for when backlash compensation is applied for references in
the forward direction (Pn230.0 = 0). The following monitoring information is provided in
the figures: TPOS (target position in the reference coordinate system), POS (reference
position in the reference coordinate system), and APOS (feedback position in the
machine coordinate system). The monitoring information includes the feedback
position in machine coordinate system (APOS) and other feedback information. The
backlash compensation value is subtracted from the feed- back positions in the
monitoring information, so it is not necessary for the PC or PLC...etc. to consider the
backlash compensation value.
CAUTION
• The encoder output pulse will output the number of encoder pulses for which driving was
actually per- formed, including the backlash compensation value. If using the encoder output
pulse for position feed- back at the PC or PLC...etc., must consider the backlash
compensation value.
- When Servo is ON
The backlash compensation value (Pn231) is added in the compensation direction
when the servo is ON (i.e., the servomotor is powered) and a reference is input in the
same direction as the backlash compensation direc- tion (Pn230.0). If there is a
reference input in the direction opposite to the backlash compensation direction, the
backlash compensation value is not added (i.e., backlash compensation is not
performed).
The relationship between APOS and the servomotor shaft position is as follows:
If a reference is input in the compensation direction: APOS = Motor shaft position -
Pn231
If a reference is input in the direction opposite to the compensation direction: APOS =
Motor shaft position
The following figure shows driving the servomotor in the forward direction from target
position TPOS0 to TPOS1 and then to TPOS2, and then returning from TPOS2 to
TPOS1 and then to TPOS0.
Backlash compensation is applied when moving from TPOS0 to TPOS1, but not when
moving from TPOS2 to TPOS1.
Содержание LECYU Series
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Страница 65: ...3 Wiring and Connection 3 11 3 Wiring Example with DC Power Supply Input DRIVER ...
Страница 92: ...3 Wiring and Connection 3 38 External Dimensions Units mm 1 FN Type by Schaffner EMC Inc ...
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