IDEC SmartRelay FL1A-H12RCE, Руководство пользователя

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IDEC SmartRelay Functions
4-13
IDEC SmartRelay User’s Manual
Note
Always specify a time T > 0.10 s. For T = 0.05 s and
T = 0.00 s the time T is not defined.
Accuracy of T
All electronic components have clock/minute differences.
This can result in deviations in the set time (T). In IDEC
SmartRelay the maximum deviation is 1 %.
Example:
In 1 hour (3600 seconds) the deviation is 1 % (i.e.
36 seconds).
In 1 minute the deviation is therefore only 0.6 seconds.
Accuracy of the time switch
To ensure that this deviation doesn’t result in the clock
running inaccurately in C variants, the time switch is
regularly compared with a high–precision time base and
adjusted accordingly.
This results in a maximum time error of
± 5s a day.
4.3.3 Clock Buffering
The internal clock of a IDEC SmartRelay module has a
power buffer and continues to run if there is a power failure.
The ambient temperature affects the duration of the
reserve power. At an ambient temperature of 25
° C the
typical power buffer is 80 hours.
4.3.4 Retentivity
The switching states and counter values can be kept
retentively in the special functions. To do this, retentivity
must be switched on for the relevant function.