Monitoring functions
Parameter manual b maXX BM5800
Document No.: 5.16029.03 Baumüller Nürnberg GmbH
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of 814
4.2
4.2.1 Monitoring function - explanations
Ground fault This monitoring function checks whether there is a short circuit between at least one mo-
tor terminal and ground. If a short circuit is detected, a pulse inhibit occurs immediately.
Overcurrent This monitoring function checks whether the motor current is larger than the 1.3 times the
peak output current. This aids "disaster prevention" in case of a short circuit on the output
side.
DC link This monitoring function checks the voltage in the DC link. If the voltage drops below an
internally set value (approx. 50
V under the specified value), the controller reports "DC
link undervoltage" and a warning is signaled. If the voltage rises above an internally set
value (approx. 820
V), the controller reports the error "DC link overvoltage" and a pulse
inhibit takes place immediately.
Overload monitor-
ing
This monitoring function checks the present load as to whether the power unit can output
the peak current at this time. If the peak current is not possible, then the message "PU
monitoring approached; max. torque current was limited" (warning 206) is reported.
Temperature of
device interior
This monitoring function checks the temperature in the interior of the device.
m If the temperature is higher than the warning threshold, then the controller signals a
warning.
m If the temperature is too high, then a pulse inhibit takes place immediately.
Heat sink tem-
perature
This monitoring function checks the temperature of the heat sink.
m If the temperature is higher than the warning threshold, then the controller signals a
warning.
m If the temperature is too high, then a pulse inhibit takes place immediately.
Motor temperature This monitoring function checks the temperature of motor. If the I
2
t-threshold is exceeded,
then the error message "I
2
t overload" is reported by the controller.
Only for
KTY84 encoder
If the set temperature threshold 1 is exceeded, then the warning "Temperature threshold
1 exceeded" is signaled by the controller.
If the set temperature threshold 2 is exceeded, then the warning "Temperature threshold
2 exceeded" is signaled by the controller.
The KTY84 encoder has a minimum measured value of approx. -30 °C. If this tempera-
ture is gone under, or if a short circuit occurs at the encoder, then the error message
"Temperature probe short circuit" is reported.
The KTY84 encoder has a minimum measured value of approx. +250 °C. If this tempera-
ture is exceeded, or if the encoder is not connected, then the error message "Temperature
probe not connected" is reported by the controller.
For all
encoders
If the threshold set (type-specific) in the temperature switch or in the MSKL encoder is
exceeded, then the error message "Overheating" is reported by the controller and a pulse
inhibit takes place immediately.
Position controller This monitoring function checks the position error limit statically/dynamically. If the cur-
rent position error is statically/dynamically larger than the set position error limit, then the
error message "Static position error" or, respectively, "Dynamic position error" is reported.
After the monitoring period (position error period) has ended, an additional error message
is reported and a pulse inhibit takes place immediately.
Safety technology This monitoring function checks whether the safety function Safe Torque Off (STO) is ac-
tivated. If the drive is enabled at the moment of triggering the safety function, an error
message is generated. If the drive is not enabled, a warning is displayed.
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