Module 9158 Maximum Torque - HEIDENHAIN iTNC 530 Technical Manual

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Module 9158 Maximum torque

With Module 9158 you can limit the torque of an axis or spindle. The maximum
torque resulting from the data in the control's motor table cannot be
exceeded. In this case the torque is limited to the value from the motor
specifications. After the drive is switched off, the original torque becomes
effective again.
If the torque limit is active, the standstill monitoring is inactive; only the motion
monitoring remains active.
The torque-producing current required for the desired torque must be
transferred to the module:
Synchronous motor
⋅
M 2
= ------------- -
I
q
k
M
I : Torque-producing current
q
M: Desired torque
k : Torque constant
M
(from motor table)
Call:
PS B/W/D/K/S<>Axis or spindle>
0 to 8: Axes 1 to 9
15: Spindle
PS B/W/D/K/S<>Torque-producing current in mA>
–1 = Torque given in motor specifications
CM 9158
Error detection:
Marker Value Meaning
M4203 0 Torque preset active
1 Error code in W1022
W1022 1 0 Nm torque transferred
2 Invalid axis number
24 Module was called in a spawn job or submit job
Asynchronous motor
n
Armature control range (n < n
⋅ ⋅ 2 π ⋅ ⋅
M n
N
I
= --------------------------------------------------------------
⋅
q
P 60
N
n
Field weakening range (n > n
⋅ ⋅ n 2 π ⋅ ⋅ ⋅
M n
N
I = --------------------------------------------------------------------- -
⋅
q
P n
N FS
I : Torque-producing current
q
M: Desired torque
n : Rated speed (from motor table)
N
n: Current speed
I : Rated current (from motor table)
N
I : No-load current (from motor table)
0
P : Rated power output (from motor
N
table)
n : Threshold speed for field weakening
FS
(from motor table)
HEIDENHAIN Technical Manual iTNC 530
)
FS
2 2
I I
–
N 0
)
FS
2 2
I – I
N 0
⋅
60