Detcon 1600A-N1P - Manual (Page 26)

1600A-N1P
Figure 26 Main Display
Channels are displayed in groups of eight per screen, called ‘Zones’. The ‘Zones’ are represented by a key at
the bottom of the main display that is labeled “Main” or “Zone 2”. 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. Channels that have been disabled will show “DISABLED” in lieu of sensor
information. When any channel in a ‘Zone’ has an alarm or fault condition 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: Main or Zone 2,
Program Menu, Alarm Reset, Alarm Silence, and Cal Mode.
Program Menu requires a username and password to logon (see Passwords in Section 5.4) and takes the
operator to the functions for configuration and set-up.
Alarm Reset is used to reset 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 reset 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 reset all relay output contacts that are in an active alarm state. Alarms that have been
silenced will remain silenced until they clear or another alarm is triggered. Once cleared, the alarms will fire
again if the alarm condition repeats.
Cal Mode is used to disable 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.
1600A-N1P Instruction Manual Rev. 0.1 Page 22 of 40