Motor Speed Monitoring; Motor Torque Monitoring - Lenze i55AE125B Manual

Motor control
Motor protection

Motor speed monitoring

8.7.6 Motor speed monitoring
This function monitors the motor speed during operation.
Preconditions
In order to detect the current motor speed, the inverter must be enabled and the motor
•
must rotate.
For an exact monitoring, rated motor speed
•
quency 0x2C01:005 (P320.05)
Details
If the motor speed reaches the threshold set in
•
0x2D44:002 (P350.02) takes place.
With the setting 0x2D44:002 (P350.02)
•
deactivated.
Parameter Name / value range / [default setting]
0x2D44:001 Overspeed monitoring: Threshold
(P350.01) (Overspeed monit.: Threshold)
50 ... [8000] ... 50000 rpm
0x2D44:002 Overspeed monitoring: Response
(P350.02) (Overspeed monit.: Response)
• For further possible settings, see parameter
0x2D45:001
3 Fault
8.7.7

Motor torque monitoring

This function monitors the motor torque during operation.
Preconditions
The motor torque monitoring can only be used for the following motor control types with
speed controller:
Servo control (SC ASM)
•
Sensorless control (SL PSM)
•
Sensorless vector control (SLVC)
•
Details
This function sets the internal status signal "Torque limit reached [79]" = TRUE if the maximum
possible torque has been reached.
The status signal is set irrespective of the response
•
0x2D67:002 (P329.02) set for this monitoring.
The user can use the status signal to activate certain functions.
•
tion
^ 525
The status signal also serves to set a digital output or a bit of the NetWordOUT1 status
•
word. 4Configuration of digital outputs
Parameter Name / value range / [default setting]
0x2D67:001 Maximum torque monitoring: Response
(P329.01) (MaxTrq.Monitor: Response)
• From version 02.00
• For further possible settings, see parameter
0x2D45:001
0 No response
224
0x2C01:004 (P320.04)
must be set correctly.
0x2D44:001
= "No response [0]", the monitoring function is
(P310.01).
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0x2D67:001 (P329.01)
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(P310.01).
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and rated motor fre-
(P350.01), the response set in
Info
Warning/error threshold for motor speed monitoring.
• If the motor speed reaches the threshold set, the response selected in
0x2D44:002 (P350.02) is effected.
• The parameter is calculated and set in the course of the automatic
identification of the motor.
• The parameter can also be set and thus overwritten by selecting a
motor in the engineering tool from the "motor catalog" or calibrating
the motor.
4Optimisation of the control loops
Selection of the response to the triggering of motor speed monitoring.
Associated error code:
65286 | 0xFF06 - Motor overspeed
•
and delay time
4Flexible I/O configura-
Info
Selection of response to reaching the maximum possible torque.
• The selected response takes place if the status signal "Torque limit
reached [79]" = TRUE and the deceleration time set in
(P329.02) has elapsed.
Associated error code:
33553 | 0x8311 - Torque limit reached
•
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0x2D67:002