Detcon CXT-N7 - Manual (Page 20)

Model X40
Model X40 Instruction Manual Rev. 0.0 Page 14 of 23
underscore and can be changed by swiping the magnet over the markers of the up or down arrows. A swipe
over the ENTER marker will select the displayed value and the next character to be changed will be
indicated by the underscore. Follow these same steps to input all nine characters. The last swipe over the
ENTER marker will return to the flashing cursor.
The RL4 BANK value can be 1, 2 or ALL and defines the alarm bank that a channel is related to, whether
it’s associated with Bank1, Bank2 or both. If there is more than one channel, a swipe of the down arrow
marker while the flashing cursor is on RL4 BANK will scroll the display to the next channel allowing for
its configuration. To return to the previous channel, a swipe of the up arrow marker should be performed
while the flashing cursor is on SENSOR TYPE.
NOTE: It is possible to include RL-4 modules in the CXT configuration, but these modules
must be remotely mounted with their own RXT-320 transceiver.
4.3.8 Set Channel Alarms
The SET CHANNEL ALARMS menu allows configuration of each channel’s alarms. The information to
be configured is the ALM1 LEVEL, ALM1 ASCENDING, ALM2 LEVEL, ALM2 ASCENDING, ALM3
LEVEL and ALM3 ASCENDING. Upon entering this menu, the LCD will display:
CHANNEL 1 ALARMS:
ALM2 LEVEL: ##
ALM2 ASCENDING: X
ALM1 LEVEL: ## ALM3 LEVEL: ##
ALM1 ASCENDING: X ALM3 ASCENDING: X
A flashing cursor will appear on ALM1 LEVEL. Swiping the magnet over the markers of the up or down
arrows will move the flashing cursor to the desired function. A swipe over the ENTER marker will select
the function indicated by the flashing cursor and the value can be changed by swiping over the markers of
the up or down arrows. Another swipe of the ENTER marker will save the selected value and return to the
flashing cursor.
All sensors have three alarm settings. These are labeled ‘ALM1’, ‘ALM2’, and ‘ALM3” for Alarm 1,
Alarm 2, and Alarm 3 respectively. The alarm level values are pre-determined by the user and set for each
sensor depending on the range. These values represent the alarm level set points and can be entered in 5%
increments of the full-scale range selected for that channel.
The alarm relays can also be configured for ascending or descending mode. In ascending mode the relay
will be activated when the concentration is above the alarm threshold. The alarm relays can also be
activated in descending mode. In this mode, the alarm relays will activate when the concentration is below
the alarm threshold. Typically alarms are ascending, with the exception of oxygen sensors. The alarm
ascending level can be either Y (Yes) or N (No).
If there is more than one channel, a swipe of the down arrow marker while the flashing cursor is on ALM3
ASCENDING will scroll the display to the next channel allowing for its configuration. To return to the
previous channel, a swipe of the up arrow marker should be performed while the flashing cursor is on
ALM1 LEVEL.
NOTE: If there is no intention of using a gas alarm relay, a setting of 0 will make it inactive.
NOTE: Any channels that are in alarm or fault will not display the device tag on the Main
Display.
NOTE: If the channel range is changed, the alarm set points must be re-entered!