3) Optional Horn Relay Software
The Ultima X Series Gas Monitor is available with optional Horn Relay
Software to allow an audible horn to be used with Relay 1. The
following describes the use and functionality of this optional feature.
Relay 1 is considered the Horn Relay. It does not function directly with
Alarm 1 as in the standard software. To configure, note that:
• Alarm 1 function is still active on the display
• Alarm 1 display has its own latching/non-latching
configuration setting
• Horn Relay is configured as normally energized/de-energized via
the Alarm 1 configuration setting; this is the only Alarm 1
configuration setting that uniquely controls the Horn Relay.
• Alarm/Relay 2 and Alarm/Relay 3 action remains unchanged.
NOTE: All relays, including Horn Relay hardware, have NO (normally
open) and NC (normally closed) terminals.
To Activate the Horn Relay
The Horn Relay is initially active when any alarm (1, 2, or 3) condition is
active. Once Horn Relay is reset, it is set again if the gas level:
• clears below or above the active setpoint and then moves back
through the setpoint or
• continues to move through the next alarm set point.
To Reset the Horn Relay
The Horn Relay is reset by momentary contact closure using the
pushbutton or by IR communications, regardless of whether or not the
alarm has cleared.
• The Horn Relay automatically resets if all alarms are clear (such as
when all alarms are unlatched and fall below or rise above their
setpoints for negative acting alarms).
• If any alarm remains latched after the gas value moves out of the
alarm range, the Horn Relay remains active until reset by the user.
Clearing latched alarms is done by using the optional pushbutton or the
IR Controller.
A-9
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