Speeds - Siemens SIMATIC S5 Manual

IP 266
Reference coordinate
The reference point is used to calibrate the axis. Its location can be specified via
the "Set/Approach to reference point" mode (see Section 5.3.5). The "reference
coordinate" machine data parameter is used to assign a value to this position.
The value must lie within the maximum range limits. When you define the
reference point coordinate, you also define the following coordinates:
• coordinate basic origin
• software limit switches
You can make absolute target specifications only in a system with a defined
reference point.
5.1.4

Speeds

The speeds specified in the machine data define the true speeds of the drive
system, and depend on
• the motor rotational speed
• the number of encoder pulses per revolution
• the travel per encoder revolution
The absolute values for all speeds must be less than or equal to the maximum
speed. Input values must be in the range from 1 to 65,000. Depending on the
parameter assignments, the IP expects values in [mm/min], [deg/min] or
[0.1 inch/min].
Maximum speed
Under IP 266 control, the drive reaches the maximum speed with a setpoint of
.
±10 V
CAUTION :
The maximum speed must be computed from the technical specifications for
the complete drive system (motor, axis, encoder, and so on).
EWA 4NEB 812 6057-02
Machine Data, Modes and Traversing Programs
5-9