Delay / Hold Timer - Optex Virtual Loop Installation Instructions Manual

Delay / Hold Timer

8-4-5
Delay / Hold timer is the time between the sensor status change and the relay output change. Setting the
timer shorter makes the response time faster.
Note that detection also needs a response time, which is the time for the sensor to recognize an object and
make the detection, separately from the timer time.
Delay : Delay time from actual detection to relay output
Hold timer : Delay time from non-detection to the relay output turning off
e.g.) Delay: 0.5s, Hold timer: 1s
Sensor
(processed internally)
Output: Holding
Output: Pulse IN
Pulse time : 1s
Output: Pulse OUT
Pulse time : 500ms
NOTE
This may need to be changed if (when output type is Holding):
• The timer needs to be set shorter : When a quick response is required
• The timer needs to be set longer
Delay
Hold timer : Even if the sensor momentarily enters non-detection status in an unsuitable
Delay
Hold timer
Detection stability
Responsiveness
Detection
Non-detection
Detection
Non-detection
Detection
Non-detection
Detection
Non-detection
: Even if the sensor momentarily enters detection status in an unsuitable
environment, such as with high pedestrian traffic, this prevents the relay
output from changing to On and provides stable detection.
environment, such as during heavy rain, this prevents the relay output from
changing to Off and provides stable detection.
-32-
Off 0.5 1 2
Off 0.5 1 2 3
LOW
HIGH
Delay(0.5s)
Delay(0.5s)
3 4
10 30 60
HIGH
LOW
Hold timer
(1s)
Hold timer