8 maximum torque monitoring, 9 encoder open-circuit monitoring, Maximum torque monitoring – Lenze E84DSxxx User Manual
Page 188: Encoder open-circuit monitoring, Activated, Encoder open-circuit monitoring ( 188), 5motor control (mctrl)
5
Motor control (MCTRL)
5.10
Monitoring
188
Lenze · 8400 protec StateLine · Reference manual · DMS 4.2 EN · 03/2013 · TD05
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5.10.8
Maximum torque monitoring
If the maximum possible torque
is reached at the motor shaft, the response set in
will be carried out (Lenze setting: "0: No Reaction").
If the activated monitoring is tripped:
• The "
" error message is entered into the Logbook.
• The bMctrlTorqueMax status output of the
system block will be set to TRUE.
5.10.9
Encoder open-circuit monitoring
When does the open-circuit monitoring system respond?
The open-circuit monitoring will trigger if
• an open circuit occurs in the encoder cable.
• an extreme overload (e.g. blocked motor shaft) occurs during the start-up phase of the motor.
• highly dynamic reversion of the motor occurs.
Which measured values lead to an actuation of the open-circuit monitoring system?
The following measured values checked for plausibility lead to an actuation of the open-circuit
monitoring system:
1. If the total deviation between actual speed and setpoint speed is higher than f = 40 Hz for a time
> 0.1 s .
2. If the sign of the injected frequency and the actual speed is not the same, the I
max
controller is
active and this status is active for 0.1 s. Usually this is the case when A/B tracks are reversed.
Note!
In the Lenze setting (
= "0: No Reaction"), the maximum torque monitoring is not
activated!
Note!
In the Lenze setting (
= "1: Fault"), open-circuit monitoring of the encoder is
activated!