Honeywell XNX, Technical Manual

Page: 75 / 200

XNX Universal Transmitter
Section 2 - Installation and Operation 73
Figure 111. Beam Block Menu
If the infrared beam from the Excel transmitter is blocked or
inhibited in such a way that the intensity of the beam drops to a
level below the readable threshold set by the receiver, a warning
will be generated by the XNX transmitter� The Beam Block
Options menu allows the user to define the maximum period of
time the infrared beam can be blocked and the percentage of
signal loss before generating a warning through the transmitter�
Figure 112. Beam Block Warning Time
Use the switches to move to the desired beam block
time option and use
✓
to select it� Use the switches
to decrement or increment the value until the desired value
appears� Use
✓
to select the value and move to the next setting�
Figure 113. Setting Beam Block Warning Time
When the beam is blocked longer than the value set in Time to
Beam Block, a fault is generated by the transmitter�
Set Time to Fault sets the minimum time the beam is blocked
before generating a fault�
Figure 114. Beam Block Fault Time
Use the switches to move to the desired beam block
time option and use
✓
to select it� Use the switches
to decrement or increment the value until the desired value
appears� Use
✓
to select the value and move to the next setting�
Figure 115. Setting Beam Block Fault Time
When the beam is blocked longer than the value set in Time to
Fault, a fault is generated by the transmitter�
Low Signal Percentage sets the minimum percentage value of
the beam that is not blocked� When the percentage decreases
below the defined percentage, a fault is generated�
Figure 116. Low Signal Percentage
Use the switches to move to the desired Low Signal
Percentage and use
✓
to select it� Use the switches