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Glossary
STOBER
210
05/2019 | ID 442790.01
Fail Safe over EtherCAT (FSoE)
Protocol for transferring safety-related data via EtherCAT using a FSoE master and an indefinite number of FSoE slaves
(i.e. devices that have a Safety over EtherCAT interface). The protocol enables the realization of functional safety via
EtherCAT. FSoE and its implementation are TÜV-certified and comply with the SIL 3 requirements in accordance with
IEC 61508.
Live firmware update
Firmware update, which can be prepared as the drive controller and machine are operating. The update does not take
effect until after a restart. This dual firmware behavior prevents a firmware loss or appearance of a case of service,
since it ensures, for example, that the existing firmware can be accessed if the connection is interrupted.
Miniature circuit breakers
Special switch that protects electrical systems from overload and short circuits. They have different triggering
characteristics (A, B, C, D) and thus serve all application areas in industrial, functional and residential construction.
MV number
The number of the material variant ordered and delivered as stored in STOBER's enterprise resource planning system,
i.e. the device-specific combination of all hardware and software components.
Performance Level (PL)
In accordance with DIN EN 13849-1: Measure for the reliability of a safety function or a component. The Performance
Level is measured on a scale of a – e (lowest – highest PL). The higher the PL, the safer and more reliable the function
in question is. The PL can be assigned to a specific SIL. A reversed inference from a SIL to a PL is not possible.
PTC thermistor
Thermistor whose resistance significantly changes with the temperature. When a PTC reaches its defined nominal
response temperature, the resistance increases dramatically, by two or more times the original resistance, to several
kOhms. Since PTC triplets are used, each thermistor monitors one phase of the motor winding. For 3 thermistors, this
means all 3 phases are monitored, achieving effective motor protection.
Reverse documentation
Refers to a read-only file read out by a drive controller that includes the fault memory in addition to the configuration
of a drive controller. This file is a snapshot of the time that the connection between the PC and drive controller was
interrupted. The information it contains is used for diagnostics as well as for processing service requests.
Safe Stop 1 (SS1)
In accordance with DIN EN 61800-5-2: Procedure for stopping a PDS(SR). With the SS1 safety function, the PDS(SR)
performs one of the following functions: a) Triggering and controlling the motor delay variable within defined limits
and triggering the STO function if the motor speed falls below a specified limit value (SS1-d), or b) triggering and
monitoring the motor delay variable within defined limits and triggering the STO function if the motor speed falls
below a specified limit value (SS1-r), or c) triggering the motor delay and triggering the STO function after an
application-specific delay (SS1-t). In this case, SS1(-t) corresponds to the time-controlled stop in accordance with IEC
60204-1, stop category 1(-t).