l
Torque- / force limits
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Speed- / velocity limits
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Position limitation
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Power stage (see Section "Power stage" on page 313)
P 745 - MON_RefWindow and P 746[0] - MON_UsrPosWindow indicate the status
of the configured limits and are incorporated into the general P 151[0] - MPRO_
DRVCOM_STAT_DWord status word.
P 737[0] - MON_MNCTL and P 737[1] - MON_MNSTAT can be used to monitor and
output the status of the mains connection.
ID
Index Name
Unit
Description
338
CON_SCON_ActMax
Motor control limits
338
0
Max_Speed_Motor
rpm
Maximum motor speed
338
1
Max_Current_Motor
A
Maximum motor current
338
2
Max_Torque_Motor
Nm
Maximum motor torque
338
3
Max_UsrSpeed_Motor
rev/min
Maximum motor speed in user units
338
4
MaxCurrent_Inverter
A
Maximum current @ actual voltage level and
switching freq.
338
5
Reserved
-
Reserved
338
6
Reserved
-
Reserved
338
7
MaxCurrent_Limit
A
Maximum current limit (motor or inverter)
737
MON_MNCTL
Monitoring control and status word
737
0
MON_MNCTL
Monitoring control word
737
1
MON_MNSTAT
Monitoring status word
745
MON_RefWindow
Speed Setpoint reached window
745
0
TargetReached
rpm
Window for speed control target reached
745
1
Standstill
rpm
Window for motor standstill
745
2
TorqueTargetReached
Nm
Window for torque target reached
745
3
Hyst. TargetReached
rpm
Hysteresis window for speed control target
reached
745
4
Hyst. Standstill
rpm
Hysteresis window for speed control
standstill
746
0
MON_UsrPosWindow
mDegree Setpoint reached pos. window
Table 10.1: “Limits / thresholds” parameters
MOOG
ID No.: CB40859-001 Date: 11/2020
MSD Servo Drive - Device Help
311
10 Limitations / Thresholds
10.2 Torque- / force limits
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The torque is limited to a maximum by
P 329[0] - CON_SCON_TMax
. In the
default setting the torque limit corresponds to the rated torque of the motor.
The possible setting range is 0-1000 %. The parameter can be changed
during operation.
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In addition,
P 329[0] - CON_SCON_TMax
can be used to determine what the
maximum current is. To do this, multiply
P 329[0] - CON_SCON_TMax
by the
rated current.
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P 332[0] - CON_SCON_TMaxScale
enables the torque limit set in
P 329[0]
to be scaled online – that is, during operation.
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It is additionally possible via
P 330[0] - CON_SCON_TMaxNeg
and
P 331[0]
- CON_SCON_TMaxPos
to change the torque limit for different directions of
rotation during operation.
ID
Index Name
Unit Description
329
0
CON_SCON_TMax
%
Speed control maximum torque
330
0
CON_SCON_TMaxNeg
%
Scaling of negative motor torque limit
331
0
CON_SCON_TMaxPos
%
Scaling of positive motor torque limit
332
0
CON_SCON_TMaxScale %
Scaling of motor torque limit
741
0
MON_TorqueThresh
Nm
Monitoring torque / force threshold
Table 10.2: “Limits / thresholds - Torque / force limits” parameters
NOTE
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When using homing methods -8, -9, -10, and -11,
P 332[0] -
CON_SCON_TMaxScale
is replaced by
P 225[0] - MPRO_REF_
HOMING_TMaxScale
.
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To protect against overspeed if a requested torque is not reached,
P 337[0] - CON_SCON_SMaxScale
is used to limit the speed
controller to a percentage of the rated speed.