Detcon 6400-N1P - Manual (Page 15)

1600/6400-N1P
1600/6400-N1P- Instruction Manual Rev. 1.1 Page 11 of 38
Figure 14 Main Display
Channels are displayed in user selectable groups of up to eight per screen, called ‘Zones’. The ‘Zones’ are
represented by keys labeled across the bottom of the main display as Z1 and Z2 for the 1600 and Z1 through
Z8 for the 6400. To view a particular ‘Zone’ press the appropriate key on the screen. During normal
operation, the display will rotate between zones at 10-second intervals, displaying each zone for 10 seconds
and moving on to the next zone.
The controller may be configured to have less than eight channels per ‘Zone’. Only those ‘Zones’ with active
channels will be displayed (Figure 14). When any channel in a ‘Zone’ has an alarm or fault condition, the
‘Zone’ key will begin to flash, and the controller will automatically display the channels in that ‘Zone”. When
there are alarms or faults in multiple ‘Zones’, the controller will display each zone for 10 seconds and rotate to
the next ‘Zone’. The display will continue to rotate through each ‘Zone’ until a ‘Zone’ key is selected by the
user.
The main function keys reside across the bottom of the Main Display area. They are: Program Menu, Alarm
Reset, Alarm Silence, and Cal Mode.
Program Menu takes the operator to the functions for configuration, set-up and data retrieval.
Alarm Reset is used to disengage all relay output contacts that have been set up as “latching” outputs, only
after the condition has cleared. If the alarm condition has not cleared, then the Alarm Reset will not disengage
the relay output. If no alarms have been set-up as “latching” then the Alarm Reset has no function.
NOTE: Alarm Reset can also be accomplished using an externally mounted Alarm Reset switch.
Alarm Silence is used to disengage all relay output contacts that are in an active alarm state. Alarms that have
been silenced will remain silenced until they clear. Once cleared, the alarms will fire again if the alarm
condition repeats.
Cal Mode is used to disengage all relay outputs so that the user can go off-line and calibrate the gas sensors
without activating any alarm devices. After pressing Cal Mode, the button converts to an alternating display
of “IN CAL” and “60-minute” countdown cycle, and the gas channels switch to reporting “IN CAL” to let the
user know the system has been temporarily taken out of service. At the conclusion of the 60-minute cycle, the
unit will automatically return to normal operating mode and all relay outputs will become activated again.
Any time during the 60-minute countdown the user can return to normal operating mode by pressing the Cal
Mode button again.