Thyracont B VSP63D, Руководство по эксплуатации

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Setting T[p1] F[p2]:
In this case 2 pressure thresholds T[p1] (true) and F[p2] (false) are transmitted.
T[p1] < F[p2]: The relay closes when actual pressure falls below threshold T[p1]
and opens again as soon as actual pressure exceeds threshold F[p2].
T[p1] > F[p2]: The relay opens when actual pressure falls below threshold F[p2]
and closes again as soon as actual pressure exceeds threshold T[p1].
Setting T[p1] = F[p2] ist not allowed! A gap between the thresholds
being too small may result in flickering of the relay and can even
cause damage to the relay!
VSP/VCP-RS485-200116