Wiring of analog modules for the SIMATIC S7-300 with SIMATIC TOP connect

An analog connection module is available for wiring SIMATIC S7-300 analog modules with SIMATIC TOP connect. The following connection information must be followed when wiring.

Load voltage supply

In the front connector module, there are separate connections for the load voltage L+ and M. This allows you to connect the load voltage supply of the analog module either on the front connector module or on the connection module. The distance between the front connector module and the connection module can be up to 30 m.

Terminal assignment

The individual terminals are labeled alphabetically on the connection module TPA. This makes it easier for you to assign the individual terminals on the analog module to the terminals of the connection module.

In the tables, you can see the assignment between the terminals on the analog module and on the connection module.

Assignment of 20-pole analog front connector module to the connection module

The upper socket of the front connector module is the connection for connection module 1, and the lower socket of the front connector module is the connection for connection module 2.

Terminal assignment of the 20-pole analog modules to the connection modules

Assignment of 40-pole analog front connector module to the connection module

In the table for the 40-pole analog front connector module, you can see the assignment of the sockets to the connection module.

Terminal assignment of the 40-pole analog modules to the connection modules

Terminal block assignment to the 40-pole analog front connector module

Shield connection

On the analog module, you can connect the shield of the shielded signal cable to ground via a shield connection element, and on the connection module you can connect the shield to ground via the shield plate. You can connect the shield of the signal cables or the round-sheath ribbon cable directly to the connection module. Secure a shield plate to the connection module for this purpose before assembly. In the graphic you can see that the shield plate is on the rear of the connection module and that the connection to the grounded mounting rail is made in this way. You connect the shield of the signal cables or the round-sheath ribbon cable with the shield connection terminals on the shield plate.

Analog connection module with shield plate