Emerson Liqui-tect MC68HC16Z1 - Manual (Page 36)

System and Control Options
32
Following are some similarities and differences between Latched and Unlatched alarms.
Liqui-tect System’s Response to Alarms - Both Latched and Unlatched
When a leak or cable break is detected:
• An alarm occurs,
• A record is created in the Alarm History Log and
• The leak-detected or cable-break alarm output contact changes state.
Latched Alarms Only
The user must reset latched alarms before another leak or cable break alarm can occur.
Unlatched Alarms Only
When an alarm output returns to its normal state, the alarms automatically clear and the system
returns to normal.
If two leaks occur simultaneously on the same cable, the system creates a record with the distance of
the first leak and displays an average distance for the two leaks. Always check the Alarm History Log
(see 5.2 - View Alarm History) when leak detected alarms occur in unlatched mode.
6.6 Setup System - Setup Re-Alarm Delay
The re-alarm delay may be set to provide an audible, reminder alarm notification after an alarm has
been silenced. The timer begins when the original alarm is silenced; the reminder alarm will occur
after the specified delay time has expired. The default setting is 5 minutes. The delay time ranges
from 0 to 999 minutes.
To set up the re-alarm delay:
Log In and Choose Setup System
• From the Main Menu, use the arrows ↑↓ to choose System and
Control, then press Enter ↵ (see 6.1 - Login for help) .
• Enter your password at the Login screen.
• From the System and Control Menu, use the arrows
↑↓ to choose
Setup System, then press Enter ↵ .
Select Setup Re-Alarm Delay
• From the Setup System Menu, shown at right, use the arrows ↑↓
to choose Setup Realarm Delay and press Enter ↵ .
• From the Change Realarm Delay screen, shown at right, press
and hold one of the arrow keys ↑↓ to scroll through the numbers,
then press Enter ↵ .
NOTE
A contaminated cable alarm will never latch. Because this type of alarm serves only as a
warning, it allows leak or cable break alarms to occur.
Setup System Menu
SETUP ZN1 ZONE 1
SETUP ZN2 ZONE 2
SETUP ALARM OUTPUTS
↑↓
=NEXT
↵
=SELECT
> SETUP REALARM DELAY
SETUP MAPMODE
SETUP SYSTEM INFO
Change Realarm Delay
CHANGE REALARM DELAY
5 MINUTES
↑↓
=SELECT
↵
=END