User Inputs And Outputs; User I/O Board - Siemens SINAMICS PERFECT HARMONY GH180 Function Manual

Direct Optically Isolated Connection
The optically isolated interface provided by Siemens is per the "Encoder Block Diagram" as shown
below.
Figure 5-3 Encoder Block Diagram (showing optically isolated interface)
5.3.4

User Inputs and Outputs

The drive provides terminal strips as required for end-user connection of analog and digital input/
output (I/O) signals to the drive. Specific I/O implementation is customized for each drive and you
must refer to the drawings provided with the drive. The control interfaces each of these I/O
points via fiber optic connected user I/O boards or RS232 connected WAGO expansion I/O
modules (or both). Up to four fiber optically connected user I/O boards may be connected in
linear series for greater capabilities. The first board in the series is always dedicated to I/O points
critical to the drive operation. The other expansion I/O connections, as required, are intended for
user to system I/O that is for typical drive operation or non-critical for protection.
In defining the I/O, the I/O points associated with the user I/O board(s) are referred to as internal
I/O and the WAGO is referred to as external I/O.
The system operating program (SOP) determines the routing of signals to each of these I/O
points, while the control provides a means to define the signal, the type and the scaling of the
analog signals.
5.3.5

User I/O Board

Typically an NXGpro control system has a fiber optic connected user I/O board for system
interconnections. The first board is always used for the critical I/O of the system. Refer to
Section Dedicated I/O for the mapping of these I/O.
The control system can support up to three additional user I/O boards via fiber optic
communication. The boards may be remotely located up to 35 meters in fiber length. Available
boards support either all 24 V or all 120 V on their digital inputs. The digital inputs cannot be
NXGPro+ Control Manual
Operating Manual, A5E50491925A
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Hardware User Interface Description
5.3 User Accessible Interfaces
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