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and input I103 (series 80) every 10 to 60 seconds.
• This external clock must be operational before Sepam relay.
• The synchronization function takes effect following a time-set.
• The relay learns the interval based on the rising edges of the first two received pulses at a logical input (I21).
• Thereafter, resetting is based on the measurement of the difference between the relay internal clock and the logical input pulse.