Lenze PC-based automation - Manual (Page 30)

Control technology| System manual
System description
System components
30
L
DMS 1.3 EN - 02/2011
4.1.4.2 UPS
IPCs can be equipped with a capacitor package. The capacitor package serves to buffer the
current supply of the IPC. This compensates current fluctuations and in case of a complete
power failure, these capacitors ensure the current supply. To bridge a longer power failure,
rechargeable battery packs are available.
Within this protected time, the control can save especially marked variable contents (reta-
in variables). The retain variables will continue to be available in case of a restart of the sys-
tem. Depending on the series, the capacitors are already integrated or can be connected
externally.
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Further information can be found in the following documentation:
• Industrial PC - parameter setting & configuration
• HMI EL 100