STOBER
Glossary
05/2019 | ID 442790.01
209
Glossary
100Base-TX
Ethernet network standard based on symmetrical copper cables in which the nodes are connected to a switch via
copper cables twisted in pairs (shielded twisted pair, CAT 5e quality level). 100Base-TX is the subsequent progression
from 10Base-T and includes those properties with the option of a transfer speed of 100 Mbps (Fast Ethernet).
Braking resistor
Ballast resistor that is switched on by a brake chopper in order to avoid a hazard to electrical components in the event
of significant brake energy by limiting the DC link voltage. Braking energy, which is usually only present for brief
periods, is converted into heat in the resistor.
Circuit breakers
Current-limiting switches for motor or starter protection. They guarantee safe shut-off in the event of a short circuit
and protect loads and systems from overload.
DC link discharge
Process that causes the DC link capacitors to discharge. Requirements for the discharge process: The power grid supply
is disconnected and no energy flows back from the motor to the drive controller.
DC link discharge time
Time until the DC link capacitors are discharged enough that the device can be worked on safely.
Differential (HTL/TTL)
In the context of signal transmission, a process for being able to transmit signals with the highest possible fault
tolerance even with longer transmission paths. In this approach, transmission takes place using a pair of signal
conductors instead of just one signal conductor. The actual signal is transmitted on one line and the inverse signal on
the other.
Electronic nameplate
STOBER synchronous servo motors are generally equipped with absolute encoders that provide special memory. This
memory includes the electronic nameplate, i.e. all type-relevant master data as well as special mechanical and
electronic values of a motor. When you operate a drive controller with a STOBER synchronous servo motor and an
absolute encoder, the electronic nameplate is read and all motor data transferred if the drive controller is connected
online. The drive controller automatically determines the associated limit values and control parameters from this
data.
Emergency stop
An energy supply to the machine drives that could cause a dangerous situation must either be immediately interrupted
(stop category 0) or controlled so that the dangerous movement is stopped as quickly as possible (stop category 1)
without creating other risks.