3: I/O Point Control; 4: Earth Fault Resistance - Honeywell 6820 Manual

Built-in Troubleshooting and Testing Tools
4. Select the SLC loop.
5. Enter up to 8 SLC addresses for the devices you wish to locate.
The LEDs on the selected devices will start flashing.
6. Press the left arrow key to exit SLC Multiple Device Locater.
NOTE: Once you exit, the system will resume normal operation.
12.4.3 I/O Point Control
This feature allows you to toggle any output on or off and trip any input device. This can be useful to test a point's output mapping. I/O Point
Control can only be accessed if enabled in the user profile.
Follow these steps to control an I/O point:
1. Select 2 (Point Functions) from the Main Menu.
2. Select 6 (I/O Point Control).
3. Select the module the point is on.
4. Make any selections specific to the module selected in the previous step.
5. Use the up or down arrow key to select the point you wish to test.
6. Press ENTER to toggle (Active/Inactive) Output.
7. Press the left arrow key to exit.
12.4.4 Earth Fault Resistance
Table 12.2 lists the earth fault resistance detection for each applicable terminal on the FACP.
Function
Flexput Notification Circuits
Notification Circuits
SBUS Communication
SBUS Power
SBUS Communication
SBUS Power
SLC Terminals
EXT. COMM
Any wire to wire fault impedance is 0 ohms.
6820/EVS Manual — P/N LS10144-001SK-E:E 4/6/2022
Terminal Label
(Values in Ohms)
X
I/O 6
O
X
I/O 5
O
– NAC 4
+
– NAC 3
+
– NAC 2
+
– NAC 1
+
B SBUS OUT
A
+
-
B SBUS IN
A
+
-
SC- SLC OUT
S+
SC- SLC IN
S+
B
A
+
-
Table 12.2 Earth Fault Resistance Detection Chart
Low Biased
High
High Trip
Restore
- -
0 0
- -
0 0
- -
0 0
- -
0 0
- -
0 0
- -
0 0
- -
- -
0 0
- -
- -
- -
0 0
- -
- -
0 0
- -
0 0
- -
- -
0 0
- -
Testing and Troubleshooting
High Biased
Low
Low Trip
Restore
0 0
- -
0 0
- -
0 0
- -
0 0
- -
0 0
- -
0 0
- -
0 0
0 0
- -
0 0
0 0
0 0
- -
0 0
0 0
- -
0 0
- -
0 0
0 0
- -
0 0
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