Testing; Fault And Alarm State - Honeywell XNX Safety Manual

XNX Universal Transmitter
3. Refer to Table 6 for the mA levels. If the values do not
match the values in the table, proceed to step #4 to adjust
the values.
NOTE
If the values for the faults and warnings have been changed
from the default settings since installation, ensure the current
output matches those changed values.
Table 3. Set mA Levels
Signal*
I Inhibit
W Warning
O Overrange
B** Beam Blocked
L** Low Signal
*Faults are set to 1 mA and are not user-selectable
**
Beam blocked and Low Signal apply only to Excel sensors.
4. Using the switches, increment or decrement the value
until the desired value appears. Then use
value and move to the next setting. Repeat for each setting
that must be changed.
The available output range for Inhibit, Warning, Beam Blocked and
Low Signal is from 1.0 to 4.0 mA and for an overrange condition,
the range is 20.0 to 22.0 mA. Refer to Section 5 Warnings/Faults
in the XNX Technical Manual for more information.
5. Once all changes have been made, use the
to move to the '3' and use
settings.
Proof Testing Procedure
Output (mA)
Default Min Max
2.0 mA 1.0 3.5
3.0 mA 1.0 3.5
21.0 mA 20
1.0 mA 1.0 4.0
1.0 mA 1.0 4.0
to confirm the
✓
on the front panel to save the
✓
NOTE:
If '3' is not selected, none of the changes will be saved.

6.4 Testing

6.4.1 Fault and Alarm State

The mA output of the faults and alarm states should be simulated
and the current output at the controller end should be within
tolerance. Refer to Table 6 for the current values for the fault and
22
alarm states.
1. From the Test Menu, select Alarm/Fault Simulation.
2. Figure 16 shows the menu choices simulating Alarm 1, Alarm
2, Warning, or a Fault. Selecting the return arrow icon will
display the Alarms/Fault Reset Menu.
switches
3. Selecting an alarm level to simulate will activate a
12
Figure 14. mA Settings Saved
Figure 15. Alarm/Fault Simulation Screen
Figure 16. Alarm/Fault Simulation Menu
Testing