Delta C2000 Series User Manual page 515

Chapter 16 PLC Functions Applications
lose power, etc. The sequence of these actions can be seen in the figure below. This type of
circuit is commonly used to enable one input to perform two actions in alternation. It can be
seen from the time sequence in the figure below that when input X0 is a square wave signal
with a period of T, the output of coil Y1 will be a square wave signal with a period of 2T.
Example 10: Delay circuit
When input X0 is On, because the corresponding NC contact will be Off, the timer T10 will
be in no power status, and output coil Y1 will be electrified. T10 will receive power and
begin timing only after input X0 is Off, and output coil Y1 will be delayed for 100 sec.
(K1000*0.1 sec. =100 sec.) before losing power; please refer to the sequence of actions in
the figure below.
Example 11: The open/close delay circuit is composed of two timers; output Y4 will have a delay
whether input X0 is On or Off.
Example 12: Extended timing circuit
In the circuit in the figure on the left, the total delay time from the moment input X0 closes to
the time output Y1 is electrified is (n1+n2)*T, where T is the clock cycle. Timers: T11, T12;
clock cycle: T.
C2000 Series
X0
M0
Y1
M0
Y1
M0 Y1
X0
TMR T11 Kn1
T11
TMR T12 Kn2
T12
Y1
X 0
T
M0
Y 1
X0
T11
T12
Y1
16-24
n1*T
n2*T
(n1+n2)*T