General Linear Motor Attributes
These are the motor configuration attributes that apply specifically to linear motor types.
Linear Motor Pole Pitch
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Required | Set | REAL | 50 DB | 0 |  | Meters |
The Linear Motor Pole Pitch attribute is a floating point value that specifies the pole pitch of a linear motor in units of meters, and is equivalent to the electrical cycle length.
Linear Motor Rated Speed
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Required | Set | REAL | 0 DB | 0 | | m/s |
The Linear Motor Rated Speed attribute is a floating point value that specifies the nameplate rated speed of a linear motor. For PM motors, this is generally specified at rated voltage based on either rated current, rated force, or rated power. For induction motors this value is the speed of the motor driven at rated frequency under rated force load. This value is synonymous with the term base speed.
Linear Motor Mass
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Optional | Set | REAL | 0 DB | 0 | | Kg |
# Indicates the attribute cannot be set while the tracking command (Tracking Command bit in CIP Axis Status is true). | ||||||
The Linear Motor Mass attribute is a floating point value that specifies the unloaded moving mass of a linear motor.
Linear Motor Max Speed
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Optional | Set | REAL | 0 DB | 0 | | m/s |
The Linear Motor Max Speed attribute is a floating point value that specifies the absolute maximum operating speed of a linear motor in units of m/s. This speed may be determined by the limitations of the motor, limitations of the drive power structure, or by limitations of the mechanical system, whichever is less. Specifically, this value can represent the maximum safe operating speed, maximum continuous no-load speed, maximum continuous encoder speed, or maximum continuous bearing speed of the motor. This value can be used by the drive to determine the Linear Motor Overspeed Factory Limit.
Linear Motor Damping Coefficient
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Optional | Se | REAL | 0 DB | 0 | | N/(m/s) |
The Linear Motor Damping Coefficient attribute is a floating point value that specifies the damping, or viscous friction, associated with a linear motor.
Linear Motor Integral Limit Switch
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Optional | Set | BOOL | 0 DB | - | - | 0 = No 1 = Yes |
The Linear Motor Integral Limit Switch attribute specifies a Boolean value that specifies if the motor has integral limit switches.
Track Mover Center of Mass Offset
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Optional (LTM only) | Set | REAL | 0 DB | 0 | ¥ | Millimeters |
The Track Mover Center of Mass Offset is the perpendicular offset of the center of mass of the combined mover and load from the surface of the section module over the embedded coils.
When the mover travels at a constant velocity around a track curve of varying radius, the center of mass is accelerating or decelerating as the curve radius increases and decreases. Calculate the force required to provide this acceleration on the track on the mass of the mover and load and the center of mass relative to the track section. Adding this force as a feed-forward term can reduce the following error experienced while cornering. A value of 0 disables the force compensation feature.
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