• DOK-DIAX02-DDS02.1*ANA-ANW1-EN-E1,44 • 12.96
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7. Commissioning the functions of the digital AC servo drive
7.6. Velocity command
matching
Different makes of NC controls are provided with different output voltage
levels for rapid traverse velocities. INDRAMAT AC servo drives therefore
offer the option of adapting the level of the velocity command value.
The actual motor speed and direction of rotation depends on the plant
design.
To match the velocity command value, the "OPERATING MODES,
SCALING" menu offers two different parameters:
– Maximum command value for desired velocity
– Velocity at maximum command value
Use the parameter "Maximum command value for desired velocity" to set
the maximum voltage at analog inputs E1, E2 for the desired velocity.
The signal "Velocity at maximum command value" serves to set the
desired speed of the servo motor. This speed is achieved at the
previously set command value. See parameter "Maximum command
value for desired velocity".
Example:
The entries for maximum command value and for the corresponding
velocity represent the command value scaling factor. For 2000 [rpm] at
8 [V] the entry is:
"Maximum command value for desired velocity":
Entry: 8 [V]
"Velocity at maximum command value":
Entry: 2000 [rpm]
Upper and lower limits for entry:
– "Maximum command value for desired velocity" 0 to 10 [V]
– "Velocity at maximum command value" 0 to 65000 [rpm]
If the ratio of "maximum command value for desired velocity" to
"velocity at maximum command value" exceeds 6500 rpm per
1V, the error message "parameters outside range" will be
signalled.
Matching the
signal to the NC control’s
output voltage
Matching the signal
to the rapid traverse velocity
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