Program memory modules / Interface modules
8-42 Hardware - SIMADYN D
Edition 04.2011
8.9.1 Function description
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 Terminal block X2
SU12 pin 1 – 8
SU13 pin 8, 17 – 23, 26 – 33, 36 – 43, 46 – 48
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 Terminal block X2
SU12 pin 10
SU13 pin 10
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 Terminal block X2
SU12 pin 9
SU13 pin 9
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 The maximum allowable voltages of the
modules, on which the interface modules
are connected, are to comply.
Current range max. 0.5 A
Table 8-10 Maximum permissible voltage- and current values for signal processing
Process signals
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