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vacon • 50 Common Industrial Objects implemented by vacon® 100 family
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7.2.4.1 Instance Attributes
Instance Attribute “AtReference”
This attribute indicates whether the actual value is at the reference value (e.g. the drive actual speed
is the same as what is requested in the speed reference). If the bit is 1, the drive actual value is at
the reference value.
Instance Attribute “NetRef”
When the bit is 1, the torque or speed reference is requested to be allocated to this network
interface. If the bit is 0, then no such request is made.
NOTE! The actual assignment of the reference to this network interface is reflected in the attribute
29
d
.
Instance Attribute “NetProc”
This attribute is used to request torque or speed reference to be local or from network. Values are:
• 0 = Set reference not DN control
• 1 = Set reference at DN control
Instance Attribute “DriveMode”
Allowed values for Drive Mode defined in the table below.
NOTE! The actual drive mode support depends on the used drive and application. Check the actual
drive mode support from the drive application manual.
Changes to DriveMode attribute must be reflected in the “Motor Control Mode Object”. The drive will
respond with “Invalid attribute value” status code 0x09, if other values are written.
Instance
Services
Id Name Description
14
d
0E
h
Get_Attribute_Single Used to read single attribute value.
16
d
10
h
Set_Attribute_Single Used to write a single attribute value.
Table 35. Supported Drive Modes
Value Name Supported
0 Vendor-specific mode Yes (Open loop frequency)
1 Open loop speed Yes (Open loop speed)
2 Closed loop speed control Yes (Closed loop speed)
3 Torque control Yes (Open loop torque)
4 Process control (e.g. PI control) No
5 Position control No
Table 34. AC/DC drive object
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