LinMot
System Overview
User Manual V1.01 3-9
3.7 Protection and error behavior
3.7.1 Internal protection functions
The integrated sensors and complex monitoring programs allow the detection and
handling of thermal overloading of the LinMot
®
E and P components by means of
warning and/or error messages. There is further the possibility to monitor the voltage
supply of the LinMot
®
E electronic units for overvoltage and undervoltage. If the higher-
level control system does not respond to the warning and error messages, the actuators
will be shut down for safety reasons.
3.7.2 Monitoring functions
The so-called following error monitoring and the position range monitoring offer two
powerful functions for the monitoring of the actual movement processes.
Following error monitoring
Position range monitoring
3.7.3 Emergency stop possibilities
From the point of view of the higher-level control system there are two ways to handle
the LinMot
®
actuators in case of an emergency stop:
• With the so-called FREEZE signal the drives can be stopped and maintained in their
current position. The movement is resumed when the FREEZE signal becomes
inactive again.
• By means of the STOP signal the drives can be driven to a predefined emergency
stop position or shut down.
3.7.4 Emergency stop through supply interruption
As the LinMot
®
electronic units feature separate supplies for the signal circuitry and the
power circuitry, an emergency stop can also be forced by directly interrupting the power
supply to the power circuits. As long as the signal circuitry remains powered, the
initialization and actual position of the LinMot
®
P actuators are not lost. Therefore it is
possible to resume operation without needing to re-initialize the drives.
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