General Rotary Motor Attributes
These are the motor configuration attributes that apply specifically to rotary motor types.
Rotary Motor Poles
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Required | Set/GSV | UINT | PM: 8 IM: 4 DB | 2 | max int |
The Rotary Motor Poles attribute is an integer that specifies the number of poles per revolution for rotary motors. This value is always an even number, as poles always exist in pairs.
Rotary Motor Inertia
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Optional | Set/SSV# | REAL | 0 DB | 0 |  | Inertia Units |
# Indicates the attribute cannot be set while the tracking command (Tracking Command bit in CIP Axis Status is true). | ||||||
The Rotary Motor Inertia attribute is a floating point value that specifies the unloaded inertia of a rotary motor.
Rotary Motor Rated Speed
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Required | Set/GSV | REAL | 0 DB | 0 | | RPM |
The Rotary Motor Rated Speed attribute is a floating point value that specifies the nameplate rated speed of a rotary motor. For PM motors, this is generally specified at rated voltage based on either rated current, rated torque, or rated power. For induction motors this value is the speed of the motor driven at rated frequency under rated torque load. This value is synonymous with the term base speed.
Rotary Motor Max Speed
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Optional | Set/GSV | REAL | 0 DB | 0 | | RPM |
The Rotary Motor Max Speed attribute is a floating point value that specifies the absolute maximum operating speed of a rotary motor in units of RPM. 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 encoder speed, maximum continuous motor bearing speed, or maximum motor speed based on the drive power structure voltage limit. This value can be used by the drive to determine the Rotary Motor Overspeed Factory Limit.
Rotary Motor Damping Coefficient
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Optional | Set/GSV | REAL | 0 DB | 0 | | N-m/Radians/sec |
The Rotary Motor Damping Coefficient attribute is a floating point value that specifies the damping, or viscous friction, associated with a rotary motor.
Rotary Motor Fan Cooling Speed
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Optional | Set/GSV | REAL | 600 | 0 | | RPM |
The Rotary Motor Fan Cooling Speed attribute selects the output speed of the motor below which the motor thermal protection method reduces the threshold used to detect an overload condition due to the reduced effectiveness of an integral fan cooling system. A value of zero disables the effect of the attribute. This attribute is only applicable when using the I2T motor thermal protection method.
Rotary Motor Fan Cooling Derating
Usage | Access | Data Type | Default | Min | Max | Semantics of Values |
|---|---|---|---|---|---|---|
Optional | Set/GSV | REAL | 70 | 0 | | % Motor Rated |
The Rotary Motor Fan Cooling Derating attribute selects the % derating of the motor overload detection threshold when the motor is operating at a speed below the specified Rotary Motor Fan Cooling Speed. The attribute value indicates the level of derating of the overload detection threshold at 0 speed as a percentage of rated continuous motor current. The derating profile between the Rotary Motor Fan Cooling Speed and zero speed is device dependent. This attribute is only applicable when using the I2T motor thermal protection method.
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