Datasheet

19
LT4H
Operation type
Pulse One-shot
Explanation Time chart
• Set the operation mode
section of the DIP switches
(no.’s 1, 2, and 3) on the
side of the timer as shown.
• Clears elapsed time value at power ON.
• Time delay starts and output control ON at
start ON.
• Turns output control OFF and clears elapsed
time value at time-up.
• Ignores start input during time delay.
• Stops delay time operation at stop ON.
Restarts delay time operation at stop OFF.
• In order to have the time delay start at power
ON or reset at power OFF, short out the start
input beforehand.
D
Pulse On delay
E
Signal Flicker
F
Totalizing On delay
G
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
T T
t1
t2
ta
T=t1+t2
T>ta
t
Stop
Start
Reset
Output
Power supply
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
Tt2
T=t1+t2
T Tt1
Stop
Start
Reset
Output
Power supply
T>ta
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
t1 t1
T=t1+t2
T=t1+t2
tat2
t2
T
T T
Stop
Start
Reset
Output
Power supply
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
T
t1
t2 t3 ta
T=t1+t2+t3
T>ta
Stop
Start
Reset
Output
Power supply
123
ON ON OFF
• Set the operation mode
section of the DIP switches
(no.’s 1, 2, and 3) on the
side of the timer as shown.
• Clears elapsed time value at power ON.
• Time delay starts at start ON.
• Ignores start input during time delay.
• Stops delay time operation at stop ON.
Restarts delay time operation at stop OFF.
• In order to have the time delay start at power
ON or reset at power OFF, short out the start
input beforehand.
123
OFF OFF ON
• Set the operation mode
section of the DIP switches
(no.’s 1, 2, and 3) on the
side of the timer as shown.
• Clears elapsed time value at power ON.
• Time delay starts at start ON.
• Ignores start input during time delay.
• Output control reverses, elapsed time value
clears, and timer delay starts at timer comple-
tion.
• Stops delay time operation at stop ON.
Restarts delay time operation at stop OFF.
• In order to have the time delay start at power
ON or reset at power OFF, short out the start
input beforehand.
123
ON OFF ON
• Set the operation mode
section of the DIP switches
(no.’s 1, 2, and 3) on the
side of the timer as shown.
• Elapsed time value does not clear at power
ON. (power outage countermeasure function)
• The output remains ON even after the power
is off and restarted.
• Stops delay time operation at stop ON.
Restarts delay time operation at stop OFF.
123
OFF ON ON
Notes: 1) Each signal input (start, reset, stop, and lock) is applied by shorting their input terminal to the common terminal (terminal Q for the 8-pin type, terminal E for
the 11-pin type, and ter- minal
6
for the screw terminal type).
2) The 8-pin type does not have a stop input or lock input.
6
Digital
Timers
09/2009