Clipsal C-Bus Instruction Manual Page 130

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C-Bus™ Basic Programming 1250SM0904R10/09
C-Bus™ Products Training Course 10/2009
124 © 2009 Schneider Electric. All Rights Reserved.
Figure 108 - The function details GUI for a PIR sensor
Sensor Enable/Disable
The Sensor Enable/Disable parameter can be found on the simple
programming view of a C-Bus PIR sensor. This parameter will stop the PIR
sensor from operating if a specified group address is ON or OFF.
Parameter Description
Group This will allow the selection of the group address that will enable or
disable the C-Bus PIR. This group address is on the Lighting
Application.
Enable / Disable This will allow you to select in which state (ON or OFF) the selected
group address must be in, for the PIR to be enabled or disabled.
Table 45 - Sensor Enable/Disable parameters
False Triggering Sensors
If a PIR sensor is triggering when there is no human movement, this is
typically caused by air movement. The false triggering of a PIR sensor can
be fixed by making the sensor less sensitive. By increasing the Debounce
time parameter (on the Global tab of the PIR sensor), we can ensure that
more movement is required before the load is turned on.
Figure 109 – The Time Threshold parameter
NOTE: The Time Threshold time on a PIR sensor is 96 ms to help reduce
false triggering, where a standard C-Bus wall switch is 48 ms. (Time
Threshold time is also known as Debounce time)
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