8.4.2.3
Digital inputs/outputs
The TM15 modules are the interface with the system I/O. These modules are used to read the
signals to the closed-loop controller. The signal status is indicated by a green LED on the front
panel. The TM15 module is equipped with 24 floating digital inputs/outputs, which are divided
into three groups of eight channels. Each group has a separate supply voltage connection
[(L1+, M1), (L2+, M2), (L3+, M3)]. This enables signals to be processed with separate
reference potentials. If a system supply voltage for monitoring signals is not available, the
signal monitoring function can be supplied by the 2P24, which is protected with a circuit-
breaker. In this case, the 0 V potential of the closed-loop controller is distributed in the system
in a star configuration. If this concept is rigorously applied, it can eliminate the risk of ground
loops.
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Figure 8-19 Potential supply of external signals
Signals are transmitted via a conducted electrical interface, which can be affected by
conducted interference. To minimize external interference, the signals are injected
asymmetrically and are floating. When this transmission method is used, the receiver
(optocoupler) receives the signal along with the reference potential from the transmitter. The
signal data is, therefore, forwarded to an optocoupler (group) via a closed loop.
The symmetrical interference is minimized by means of twisted cables (outgoing/incoming
conductors).
In general, the shield should be applied at both ends of the shield support bar.
The digital outputs of the TM15 are continued short-circuit proof. The logical status of the
outputs can be read back.
Operation
8.4 Functions
SINAMICS GM150 6SL3815-2LN41-4AA2
174
Operating Instructions 04/2017
Содержание SINAMICS GM150
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Страница 16: ...Table of contents SINAMICS GM150 6SL3815 2LN41 4AA2 16 Operating Instructions 04 2017 ...
Страница 18: ...Introduction 1 1 About these instructions SINAMICS GM150 6SL3815 2LN41 4AA2 18 Operating Instructions 04 2017 ...
Страница 72: ...Description 3 6 Description of options SINAMICS GM150 6SL3815 2LN41 4AA2 72 Operating Instructions 04 2017 ...
Страница 192: ...Operation 8 5 Fault and system messages SINAMICS GM150 6SL3815 2LN41 4AA2 192 Operating Instructions 04 2017 ...
Страница 228: ...Spare parts SINAMICS GM150 6SL3815 2LN41 4AA2 228 Operating Instructions 04 2017 ...
Страница 232: ...Service Support SINAMICS GM150 6SL3815 2LN41 4AA2 232 Operating Instructions 04 2017 ...
Страница 256: ...Index SINAMICS GM150 6SL3815 2LN41 4AA2 256 Operating Instructions 04 2017 ...
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