Siemens SINUMERIK 804D sl Commissioning Manual page 163

• Pulse multiplication = 128
• Internal precision = 1000 [increment/degree]
• Sensor ratio = 1:1
• Load ratio = 1:1
The machine data are set acc. to the values above:
• MD10210 INT_INC_PER_DEG (computational resolution) = 1,000 [incr./degree]
• MD31020 ENC_RESOL (encoder resolution) = 500 [pulses/revolution]
• MD31050 DRIVE_AX_RATION_DENOM (load rev. denominator) = 1
• MD31060 DRIVE_AX_RATION_NUMERA (load rev. numerator) = 1
• MD31070 DRIVE_ENC_RATION_DENOM (sensor speed denominator) = 1
• MD31080 DRIVE_ENC_RATION_NUMERA (sensor speed numerator) = 1
One encoder increment corresponds to 5.625 internal increments.
One encoder increment corresponds to 0.005625 degrees (highest possible positioning
resolution).
Example B: encoder at motor
Suppose the following conditions are provided:
• The incremental encoder is mounted on the motor.
• Encoder pulses = 2048 [pulses/rev.]
• Pulse multiplication = 128
• Internal precision = 1000 [increment/degree]
• Sensor ratio = 1:1
• Load ratio 1= 2.5:1 [motor speed/spindle speed]
• Load ratio 2= 1:1 [motor speed/spindle speed]
Gear stage 1
CNC Part 1 (NCK, PLC, drive)
Commissioning Manual, 11/2006, 6FC5397-2AP10-2BA0
10.6 Parameterization of spindle data
NCK start-up
163