GAS Gasmaster, Installation, Operation And Maintenance Manual

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33
Menu system overview
Menu Item Values
(as shown on display)
Description
Channels #1 to #4
Press the Up
and Down
Config Channel
#1 buttons to
cycle through
configuration for
channels #2, #3
and #4.
*Options will be
shown for 4-20
mA input channels
only
Type
Values = Unused
DET 4-20 SRCE
DET 4-20 SINK
FIRE 4-20 SRCE
FIRE 4-20 SINK
FIRE CONV
ESU
PELLISTOR
Name
Values = 4 character string
Location
Values = 32 character string
Units*
Values = None
%LEL
PPB
PPM
%VOL
FIRE
Range*
Values = 0 to 9999.9
Zero suppression (ZFS)*
Values = Enabled
Disabled
Interpret 2mA*
Values = Fault
Warning
Inhibit
Stab time
Values = 0 to 120 seconds
Fire reset time**
Values = 0 to 30 seconds
Alarm L1 #1, #2, #3, #4
See submenu below
Sets the input type for each channel, links on the terminal
PCB must also be set to the appropriate positions (see
section 2.8 for details).
No detector connected
4-20mA current source gas detector
4-20mA current sink gas detector
4-20mA current source flame detector
4-20mA current sink flame detector
Conventional smoke/heat or call points
ESU sampling device
Detector name (e.g. CH4 for methane, O2 for oxygen, FIRE
for smoke/heat detectors)
Optional. Detector location or tag, will be shown on the
message display if an alarm occurs (e.g. Boiler Room).
E.g. for an ESU channel
For flammable channels
Very low range toxic gas detectors
General toxic gas detectors
Oxygen or other high volume gases
Flame or conventional smoke/heat detectors.
Detector range (e.g. 100 for a flammable detector).
Applies suppression to the first 3% of scale to prevent
small deviations from zero being displayed. If the Level 1
alarm for a channel is set below 8% of full scale, the level of
suppression is reduced.
Some gas detectors produce a 2 mA signal to indicate a
certain state.
This option determines how Gasmaster interprets a signal
between 1 and 3 mA.
Inhibits the input for preset time after Gasmaster is
powered-up to prevent false alarms while the sensor is
settling.
Time for which power is removed from smoke/heat
detectors when the Accept/Reset button is pressed.
** Option will be shown for conventional fire channels only
Supervisor menu
(allows system tests to be performed, and configurations to be changed. cont.
A password is required to enter this mode, see section 3.7 for details.)