Specifications

• DOK-DIAX01-MAIN+2AD+1M-ANW1-EN-E1,44 • 07.97
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3. Controller Functions
3.2 Speed Command Value
The speed command value can be communicated to the control devices
from the controller via an analogue voltage or digitally via a bit pattern.
Feature: very broad speed range from minimum speed of 0.0005 rpm to
maximum speed.
In addition, Indramat main spindle drives offer a far more powerful type
of command value input via the "SERCOS interface" option (see section
3.2.1).
The speed command value is read at 1.2 ms intervals.
3.2.1 Analogue Speed Command Value (option)
The drive with interface for analogue speed command value is designed
for multiple applications:
• as a main spindle drive
• as a positioning drive with various gear ratios
• as a C-axis drive for lathes
The differential input provides a large degree of decoupling between NC
controller and control unit. Command value voltage matching is easily
carried out. Excessive N command value produces only specified
maximum speed.
One of the two available command value inputs is always active.
Suitable command value weighting is required for positioning, depending
on the gear reduction ratio. C-axis operation requires high resolution for
the speed command value.
Command value weighting for various speeds and C-axis operation is
obtainable via parameter records (PQRS).
The control unit must be fitted with the analogue command value
interface (type code field "speed command value = A").
Note:
For noise immunity reasons (earth loops), connect screen of command
value cable to controller only!
Avoid running command value line and power cable in parallel!
Function conversion
Performance features