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13.5.2 PROFIdrive Profile
For optimal interoperability, the interface card supports the PROFIdrive profile. No
special configuration of the interface card is required when using the PROFIdrive
profile: all that is needed is that the controller must be configured to target the
“Standard Telegram 1” module on the interface card.
• Implements Application Class 1 (standard drive)
• Supports only Standard Telegram 1 (ST1, PZD-2/2) on slot 1 (similar to Profibus
PPO type 3)
• Supports only Speed Control Mode
• The maximum motor speed (in RPM) = [maximum frequency x 120) / number of
motor poles], where “maximum frequency” equates to the value of register 13 /
parameter “UL” (upper limit frequency), and “number of motor poles” is assumed
to be a constant value of 4.
• The speed setpoint value is the commanded speed reference (in RPM) sent from
the controller to the drive. Similarly, the speed actual value is the actual
operating speed (in RPM) of the drive sent back to the controller. As the drive
natively operates in units of Hz, the following conversion equations are applied
within the interface card:
Speed Setpoint: drive speed reference in RPM. Maps to inverter register 1008
(parameter FA07 / internal option board frequency command). The speed setpoint
component of the PROFIdrive profile is always in units of RPM. Therefore, the
interface card applies the RPM-to-Hz conversion indicated in Equation 4 in order to
determine the appropriate frequency command value (in units of Hz) to be written to
register 1008.
120
poles motor of number x RPM
Hz =
Equation 4
The “number of motor poles” term which appears in the numerator of Equation 4 is
assumed to be a constant value of 4.
Speed Actual: drive operating speed in RPM. Maps to drive register 1301
(parameter FD00 / output frequency). The speed actual component of the
PROFIdrive profile is always in units of RPM. Therefore, the interface card applies
the Hz-to-RPM conversion indicated in Equation 5 in order to determine the
appropriate operating speed (in units of RPM) to be written to the network.
poles motor of number
120 x Hz
RPM =
Equation 5
The “number of motor poles” term which appears in the denominator of Equation 5 is
assumed to be a constant value of 4.