Feedback - Lenze g500-B Manual

Product extensions

Feedback

Feedback
For speed control with a servo inverter, the servo motor can be equipped with the following
feedback systems:
Inverter
i950 servo inverter
i700 servo inverter
8400 TopLine inverter drives
9400 HighLine servo drives
Inverter
i950 servo inverter
9400 HighLine servo drives
Feedbacks in the environment of functional safety
Motors can perform speed-dependent safety functions for safe speed and/or safe relative
position monitoring in a drive system by Lenze inverters or Controllers. In case of inverters,
these functions are implemented by integrable safety modules and in case of Controllers by
the additionally required Safety Controller.
When planning systems/installations of this kind, always observe the following:
When using just one single feedback system in the environment of these safety
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applications, the applicable safety engineering standard IEC 61800-5-2 (adjustable speed
electrical power drive systems - Part: 5-2: Safety requirements - Functional) stipulates
special requirements for the connection between feedback system and motor shaft.
This is due to the fact that two-channel safety systems at this point in the mechanical
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system are actually designed as single-channel systems. If this mechanical connection is
designed with considerable overdimensioning, the standard permits exclusion of the fault
"encoder-shaft breakage" or "encoder-shaft slip". As such, the permissible angular
acceleration limit values must not be exceeded for the individual drive solutions.
You can find the limit values in the corresponding feedback data of the individual motor
ranges.
Speed-dependent safety functions
Examples of speed-dependent safety functions:
Safe stop 1 (SS1)
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Safe operational stop (SOS)
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Safely limited speed (SLS)
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Safe maximum speed (SMS)
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Safe direction (SDI)
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Operation mode selector (OMS) with confirmation (ES)
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Safe speed monitor (SSM)
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Safely limited increment (SLI)
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Feedback without functional safety
Resolver Absolute value encoder
RS0 AM128-8V-H
RS0 AM128-8V-H
RS0 AM128-8V-H
RS0 AM128-8V-H
Feedback with functional safety
Resolver Absolute value encoder
RV03 AM128-8V-K2
RV03 AM128-8V-K2
Digital absolute value encoder
for OCT
AM20-8V-D
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Digital absolute value encoder
for OCT
AM20-8V-D2
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