43
t
ON
t
OFF
Pulse Length T
Relay
ON
OFF
Time [s]
Control signal and pulse length control
Out put of relay controlled by hysteresis band is time. Crile T for open or close is constant. Different value
comes from limited value, increase or decrease of open time is in accordance with proportion range.
Following applications
：
t
ON
+ t
OFF
= T (Const.)
greater divergence
Î
greater tON
Xp exceeded
Î
t
ON
= T (relay remains picked up)
