LOGO! Manual
A5E00067781 01
92
4.4.7 Interval Time-Delay Relay – Pulse Output
Brief description
An input signal produces a signal of definable duration at
the output.
Symbol in
LOGO!
Connection Description
Input Trg The input Trg (trigger) starts
the time for the interval time-
delay relay.
Parameter T T is the period after which
the output is switched off
(output signal is switched
from 1 to 0).
Output Q Q comes on with Trg and re-
mains on during the time Ta
and while the input is set to
1.
Parameter T
Please refer to the note on the T parameter in Sec-
tion 4.3.2.
Timing diagram
Trg
T has not expired completely
T
a
starts
Q
The bold part of the timing diagram
appears in the interval time-delay
relay symbol.
T
Description of function
When the input Trg switches to the state 1, the output Q
immediately switches to the state 1. At the same time, the
elapsed time T
a
starts running; the output remains set.
If T
a
reaches the value specified by means of T (T
a
=T), the
output Q is reset to 0 (pulse output).
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