Lenze EVS9332xS - Manual (Page 231)

Configuration
Monitoring
Maximum speed
8
8.2
8.2.4
l
8.2−4 EDSVS9332S EN 6.0−07/2013
8.2.4 Maximum speed
(
Stop!
Destruction of the drive!
ƒ If the fault is triggered, the drive is without torque.
ƒ In the event of an actual speed value encoder failure it is not
guaranteed that the monitoring responds.
Protective measures:
ƒ Use a mechanical brake if necessary.
ƒ Special, system−specific measures are to be taken.
The NMAX fault is triggered if the system speed (MCTRL−NACT)
ƒ exceeds the value set under C0596 or
ƒ exceeds the maximum speed n
max
(C0011) by twice the max. speed
value.
A fault initiates TRIP NMAX. Other responses cannot be set.
8.2.5 Motor
Fault OC1 is triggered if the motor current exceeds the 2.25−fold rated
controller current.
If a fault occurs, TRIP OC1 is triggered. Other responses cannot be set.
The OC2 fault is triggered if
ƒ the motor has a short circuit to the frame,
ƒ one of the phases has a short circuit to the shield,
ƒ one of the phases has a short circuit to PE,
ƒ the capacitive charging current of the motor cable is too high.
A fault initiates TRIP OC2. Other responses cannot be set.
If a current−carrying motor phase fails, a motor winding is broken or the
current limit value set in C0599 is too high, the LP1 fault is triggered.
The monitoring is not appropriate for field frequencies > 480 Hz and when
synchronous servo motors are used. Deactivate the monitoring at these
conditions.
The response to exceeding the thresholds can be set under C0597.
)
Note!
The monitoring can only be activated if the function block MLP1
is entered in the processing table (C0465).
Overcurrent in the motor
cable (OC1)
Earth fault in the motor cable
(OC2)
Failure of a motor phase (LP1)