Function Description - Siemens SIMADYN D Hardware Manual

Program memory modules / Interface modules

8.9.1 Function description

Process signals
8-42
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A 1:1 connection from the SIMADYN D-side ribbon cable connector X1 to
the plant/system-side screw terminal block X2 is established by using the
interface modules SU10 and SU11.
A 1:1 connection from the SIMADYN D-side connector X1 to the
plant/system-side spring-cage terminal block X2 is not established for all
signals by using the interface modules SU12 and SU13.
The following terminals have a fuse (0,5A slow-blow, internal resistance
0,25Ω) in the following signal lines:
Interface modules
SU12
SU13
The following terminals have a protection diode ( Schottky- diode, BAT46
by Vishay) for the 24V power supply of the binary outputs in the following
signal lines:
Interface modules
SU12
SU13
The following terminals have a ptc resistor (internal resistance 0,9Ω, e.g.
B59910-C120-A70 by Epcos) as short circuit protection for the 24V
power supply of the binary outputs in the following signal lines:
Interface modules
SU12
SU13
The interface modules are designed so that signals can flow from both
sides. The process signals are coded without any additional electrical
isolation and signal processing.
Voltage range
Current range
Table 8-10 Maximum permissible voltage- and current values for signal processing
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Terminal block X2
pin 1 – 8
pin 8, 17 – 23, 26 – 33, 36 – 43, 46 – 48
Terminal block X2
pin 10
pin 10
Terminal block X2
pin 9
pin 9
The maximum allowable voltages of the
modules, on which the interface modules
are connected, are to comply.
max. 0.5 A
Hardware - SIMADYN D
Industry Automation
Edition 04.2011
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