System overview
3.9 Power supply
Automation system
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System Manual, 12/2017, A5E03461182-AE
Benefits
The weighing modules SIWAREX for SIMATIC S7-1500 offer you the following advantages:
●
Seamless integration of simple weighing applications such as platform and hopper scales
in SIMATIC S7-1500
●
Use for level monitoring, e.g. silos and bunkers
●
can be used centrally in SIMATIC S7-1500 and in ET 200MP distributed I/O system
●
SIWAREX WP521 ST for the setup of one scale
●
SIWAREX WP522 ST for the setup of two separate scales, with the same space
requirements as WP521 ST
●
free sample application on the Internet for the quick implementation of customer or
industry-specific solutions
3.9
Power supply
The power supply of an automation system to be dimensioned according to plant size. The
SIMATIC S7-1500 CPUs are supplied via a load power supply. A system power supply that
supplies the backplane bus is integrated in the CPUs. Depending on the system
configuration, you can expand the integrated system power supply with up to two additional
system power supply modules. If your plant has high power requirements (e.g. I/O load
groups), you can connect additional load power supplies.
The main differences between the two power supplies for the SIMATIC S7-1500 automation
system are listed below:
Power supply
Description
Load power supply (PM)
Supplies the S7-1500 system components such as CPU, system power supply (PS),
input/output circuits of the I/O modules and any sensors and actuators with 24 V DC.
You can install the load power supply directly to the left of the CPU (without connec-
tion to the backplane bus).
The supply of the CPU or of the interface module with 24 V DC is optional if you
supply the voltage for the backplane bus via a system power supply.
System power supply (PS)
Supplies only internally required system voltage.
Supplies parts of the module electronics and the LEDs.
Summary of Contents for Simatic S7-1500/ET 200MP
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