2. Using Timers and Holding Timers
X: ON-delay timer
Turns ON after set delay after the trigger input turns ON.
Basic Operation
Trigger input
Reset input
Trigger input
Timing
Setting
Present value
Output
0
Main Applications
When delayed operation or a time lag is required.
Timer bit
■: OFF-delay timer
Stays ON while the trigger input is ON and turns OFF after a set delay
after the trigger input has turned OFF.
Basic Operation
Trigger input
Reset input
Trigger input
Setting
Timing
Present value
Output
0
Main Applications
Timer bit
Useful for OFF delay circuits for lights or fans
O: One-shot pulse timer
Turns ON for a set period after the trigger input turns ON and regardless
of how long the trigger input remains ON.
Basic Operation
Trigger input
Reset input
Trigger input
Timing
Setting
Present value
Output
0
Main Applications
Useful for set operations where operation is always required during a
regular period only.
Timer bit
F: Flashing pulse timer
Repeatedly turns ON and OFF in a set cycle while the trigger input is ON.
Basic Operation
Trigger input
Reset input
Trigger input
Timing
Timing
Timing
Timing
Setting
Output
Present value
0
Main Applications
Useful for flashing emergency lights or sounding buzzers as the output
for an alarm circuit.
Timer bit
W: Twin timer
Repeatedly turns ON and OFF in a set cycle while the trigger input is ON.
Independent ON- and OFF-time settings are possible.
Basic Operation
Trigger input
Reset input
Trigger input
ON-time
OFF-time
Timing
Timing
Timing
Timing
(OFF-time) (ON-time) (OFF-time) (ON-time)
Present value
Output
0
Timer bit
Main Applications
Useful for intermittent (ON/OFF) operation, such as that used for fans.
3. Using Holding Timers
X: ON-delay timer
Turns ON after set delay after the trigger input turns ON. The present
value is held while the trigger input is OFF.
Main Applications
Trigger input
Reset input
To continue operation after momentary power loss or power interruptions.
Also can be used when delayed operation or a time lag is required.
Setting
Present value
0
Timer bit
20
Programmable Relay ZEN V2 Units
OMRON [ OMRON ELECTRONICS LLC ]
