Installation guide
3.4 Installing the TIM 3V-IE variants in an S7-300
Station control system
102
System Manual, 07/2009, C79000-G8976-C178-07
Result
The following results can be derived from the table above:
1.
Current consumption from S7-300 backplane bus:
The current consumption of the signal and TIM modules from the backplane bus amounts
to a total of 270 mA. It does not therefore exceed the 1.2 A that the CPU 314 can supply
to the backplane bus.
2.
Current consumption from the 24 V power supply:
The current consumption of the signal. TIM and modem modules from the 24 V load
power supply amounts to approx. 1.9 A. All additional loads must also be taken into
account. Depending on this, you can then select the PS 307 power supply. The PS 307
unit with 2 A output current would probably be not quite adequate for this example.
3.
Power loss:
The power loss of the S7-300 configuration amounts to a total of 50.6 W.
The power loss of all the components used in a cabinet (including the S7-300
configuration with 50.6 W) must not exceed the maximum suppliable power of the
cabinet.
Note
When planning the dimensions of the cabinet, make sure that the temperature in the
cabinet does not exceed the permitted maximum of 60°C even when the temperature
outside the cabinet is high.
3.4
Installing the TIM 3V-IE variants in an S7-300
Introduction
The TIM 3V-IE variants can be used in an S7-300 as communications processors (CP). In
principle, all S7-300 standard and compact CPUs can be combined with these TIMs. There
are, however, constraints that must be taken into account relating to the way in which data
exchange between the TIM and the CPU in the rack is handled (the SINAUT program). For
the TIM 3V-IE variants, there are two options:
1.
TD7onTIM
This SINAUT TD7 program runs on the TIM.
All standard and compact CPUs can be used with restriction.
2.
TD7onCPU
This SINAUT TD7 program runs on the CPU and is created for the CPU with blocks from
the SINAUT TD7 library.
In this case, only CPUs with a work memory adequate to accommodate the SINAUT
program can be used. The size of the program depends on the amount of data to be
transmitted. At least 20 Kbytes are required. TD7onCPU can be used for several
standard CPU types if the following software packages are used:
–
"SINAUT TD7 library for the CPU" as of V2.2
–
"TIM firmware" as of V1.2
You will find the CPUs affected in the list below.
