Backup batteries

Lithium backup batteries of type AA with 2.3 Ah are used in the power supply modules of all SIMATIC PCS 7 automation systems of the S7?400 range (AS bundles). Since lithium batteries are easily inflammable, more rigorous transport and storage regulations apply to them.

To avoid subjecting the AS bundles to these more rigorous transport and storage regulations, the backup batteries must be ordered and delivered separately (Article No. 6ES7971-0BA00 or 6ES7971-0BA02).

The following backup batteries are required depending on the configuration of the AS bundles:

• SIMATIC PCS 7 AS Single Station with
  • 1 power supply module: 2 units
  • 2 redundant power supply modules: 4 units
• SIMATIC PCS 7 AS Redundancy Station with
  • 2 power supply modules: 4 units
  • 2 x 2 redundant power supply modules: 8 units