Siemens SINUMERIK 802S Technical Manual page 79

Service display of the axis drive behavior
Servo Trace
Axis value as an analog value
SINUMERIK 802S base line
Start-Up
Number MD Identifier
32000 MA_MAX_AX_VELO
32300 MA_MAX_AX_ACCEL
35220 MA_ACCEL_REDUCTION_
SPEED_POINT
35230 MA_ACCEL_REDUCTION_
FACTOR
* : The selection of the value depends on the motor characteristic.
M A X_A C C E L_R E D U C T IO N _T Y P E = 0 (constant)
a
a m ax
a re d
C h ara cte ristic a (v)
vre d
Fig. 4-7 Axial acceleration and velocity characteristics
Velocities:
v : MA_MAX_AX_VELO
max
v : MA_ACCEL_REDUCTION_SPEED_POINT x MA_MAX_AX_VELO
red
Accelerations:
a : MA_MAX_AX_ACCEL
max
a : (1 – MA_ACCEL_REDUCTION_FACTOR) x MA_MAX_AX_ACCEL
red
SINUMERIK 802S base line provides two possibilities to evaluate the axis
drive behavor:
To provide axis service, the Servo Trace function is integrated in the Diagnosis
menu, which can be used for graphical representation of the axis setpoint
speed.
The Trace function is selected in the Diagnosis/Service display/Servo Trace
operating area (cf. User's Guide "Operation..").
For service purposes, the axis setpoint value required for the stepper motor
drive can additionally be provided as an analog value. Using a storage
oscilloscope, this feature can be used to display the axis drive behavior when
starting up individual axes.
To output the analog axis setpoint, with SINUMERIK 802S base line, the D/A
converter of the spindle is used.
linear
10,000.0 mm/min
1 m/s
1
0
v
vm ax
vre d
v
vm ax
Start-Up
Default Value
circular
27.7 r.p.m.
2
2.77 rev's/s
C h ara cte ristic v(t)
t
2
4-39