HEIDENHAIN TNC 430 PA/M - Current Utilization on the Drive Motors (Digital Axes Only)

December 2001 Monitoring Functions 6 – 169
6.11.10 Current Utilization on the Drive Motors (Digital Axes Only)
Module 9166 provides the momentary utilization of the given drive motor as a
percentage value.
Utilization means:
Instead of the drive torque, one uses the effective component I
q
of the
current, which is proportional to the torque.
I
qMean
is formed as mean value of the individual current values I
qx
of the last
20 ms:
For asynchronous motors:
I
N
: Motor rated current
I
mag
: Magnetizing current
For synchronous motors:
I
qRated
= <Motor rated current>
Module 9166 Momentary utilization of the drive motor
The evaluation through MP2312.x or MP2313 is already calculated in the
utilization of the drive motor.
Call:
PS B/W/D/K <Axis>
0 to 8 and 15 = Axes 1 to 9 and the spindle
CM 9166
PL B/W/D <Utilization of the drive in %>
Error recognition:
Speed range n
actl
< rated speed n
actl
≥ rated speed
Asynchronous
motor
Synchronous motor –
Marker Value Meaning
M4203 0 No error
1 Control has no current controller
M
M
Rated
-------------------------
P
P
Rated
----------------------
M
M
Rated
-------------------------
I
qMean
I
q1
..I
qn
()
å
n
------------------------------=
Utilization 100 %
I
qMean
I
qRated
-------------------
⋅=
I
qRated
<motor rated current>=