E6581268 ①
3.8.AC Drive Object
Class code 0x2A. This object models the functions specific to an AC Drive. e.g. speed ramp, torque control etc
3.8.1.AC Drive Object Class Attributes
Attribute | Name | Data | Access | Description | Default | |
ID | Type | Rules | Value | |||
|
| |||||
1 | Revision | UINT | Get | Revision of this object | 1 | |
|
|
|
| Maximum instance number of an object |
| |
2 | Max instance | UINT | Get | currently created in this class level of | 1 | |
|
|
|
| the device |
|
3.8.2.AC Drive Object Instance Attributes
Attribute | Name | Data | Access |
| Description | Default | |
ID | Type | Rules |
| Value | |||
|
|
| |||||
1 | Number of Attributes | USINT | Get | Number of Attributes supported | 11 |
| |
2 | Attribute List | USINT | Get | List of Attributes supported | - |
| |
(ARRAY) |
| ||||||
|
|
| 1 | = Drive actual at reference (speed or |
|
| |
3 | At Reference | BOOL | Get | - |
| ||
torque reference) based on mode |
| ||||||
|
|
|
|
|
| ||
|
|
|
| Requests torque or speed reference to |
|
| |
|
|
|
| be local or from network. |
|
| |
|
|
|
| 0 | = Set Reference not DN Control |
|
|
4 | Net Reference | BOOL | Get/Set | 1 | = Set Reference at DN Control | - |
|
|
|
|
| Note that the actual status of torque or |
|
| |
|
|
|
| speed reference is reflected in atrribute |
|
| |
|
|
|
| 29, RefFromNet. |
|
| |
|
|
|
| 0 | = Vendor specific mode |
|
|
|
|
|
| 1 | = Open loop speed (Frequency) |
|
|
6 | Drive Mode | USINT | Get | 2 | = Closed loop speed control | - |
|
3 | = Torque control |
| |||||
|
|
|
|
|
| ||
|
|
|
| 4 | = Process control (e.g. PI) |
|
|
|
|
|
| 5 | = Position control |
|
|
7 | Speed Actual | INT | Get | Actual drive speed (best approximation) | - |
| |
Units: |
| ||||||
8 | Speed Reference | INT | Get/Set | Speed reference | - |
| |
Units: |
| ||||||
9 | Current Actual | INT | Get | Actual motor phase current | - |
| |
Units: 100mA |
| ||||||
|
|
|
|
|
| ||
|
|
|
| Acceleration time |
|
| |
18 | Accel Time | UINT | Get/Set | Time from 0 to High Speed Limit | - |
| |
|
|
|
| Units: ms |
|
| |
19 | Decel Time | UINT | Get/Set | Deceleration time | - |
| |
Time from High Speed Limit to 0 |
| ||||||
|
|
|
| Units: ms |
|
| |
21 | High Speed Limit | UINT | Get/Set | Maximum speed limit | - |
| |
Units: |
| ||||||
|
|
|
| Status of torque/speed reference |
|
| |
29 | Ref From Net | BOOL | Get | 0 | = Local torque/speed reference | - |
|
|
|
|
| 1 | = Devicenet torque/speed reference |
|
|
3.8.3. AC Drive Object Common Services |
|
|
|
|
| ||
Service | Service Name | Supported | Description of Service | ||
Code | Class | Instance | |||
|
| ||||
0x0E | Get_Attribute_Single | Yes | Yes | Returns the contents of the specified attribute. | |
0x10 | Set_Attribute_Single | N/A | Yes | Modifies the value of the specified attribute. | |
3.8.4. AC Drive Object Specific Services
The AC/DC Drive Object provides no object specific services.
- 24 -
