Beckhoff PS9031-4820-0001, Документация

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Foreword
PS9031-4820-0001 9 1.0
2.3 Terminology and abbreviations
Power supply mode Describes a state in which the supply voltage lies in the range of the nominal
supply voltage and the supplying power supply unit can supply a sufficient
amount of current for the buffer module and the load. The mode can also be
called "normal mode".
Buffer operation Describes a state in which the input voltage lies below the transition threshold
value, the device is running on capacitors (buffering) and the output is loaded
within the permissible limits.
The mode can also be called "capacitor mode".
Inhibit mode Describes a state in which the buffering is deliberately disabled (e.g. for
service work).
T.b.d. Still to be defined, value or description will follow in due course.
DC 48V A value preceded by "AC" or "DC" represents a nominal voltage that contains
standard tolerances.
Example:
DC 12 V refers to a 12 V battery, regardless of whether it is fully charged
(13.7 Vdc) or discharged (10 Vdc).
48 Vdc A value followed by the unit Vac or Vdc is an instantaneous value that does
not contain any additional tolerances.
may A keyword indicating a choice without implied preference.
shall A keyword indicating a mandatory requirement.
should A keyword indicating a choice with a clearly preferred method of
implementation.