38
XLS80e Fire Alarm Control Panels
Honeywell, Issue 9
March 2007
5.1.3.2 MCS Sensors
The system supports Multi-criteria (MCS)
sensors.
The MCS4 sensor has the capability for carbon
monoxide, photoelectronic (optical), infra-red
and thermal detection.
This sensor has a thermal-only mode as
described on the previous page for Acclimate.
The Alarm and Pre-alarm levels and defaults are
as described for Acclimate, and the verification
delays are the same as for a MULTI sensor.
5.1.3.3 GAS Sensor Interface
The analogue level output from the Gas
Sensor Interface IIG1 or IIG4 is a current in
the range 4 to 20mA. The Alarm, Pre-alarm
and Fault thresholds are editable within this
range. Use the and pushbuttons to toggle
between the Pre-alarm and Fault parameters.
The thresholds are selected for editing in the
same manner as for other devices, but the edit
procedure is different:
1 Enter the new value in tenths of milliamps.
All digits must be entered including the one
after the decimal point, even if it is zero.
2 The decimal point is not displayed during
the entry. It is redisplayed when the
pushbutton is pressed.
See the example at left, in which the Alarm
Sensitivity is changed from 12.0mA to 13.5mA.
Device Configuration - Loop 3 Sensor 5
Alarm Sensitivity level (4-20mA):
(Please type in units of 0.1mA):
12.0
Device Configuration - Loop 3 Sensor 5
Alarm Sensitivity level (4-20mA):
(Please type in units of 0.1mA):
135
Device Configuration - Loop 3 Sensor 5
Alarm Sensitivity level (4-20mA):
(Please type in units of 0.1mA):
13.5 Confirm ( /X)?
Device Configuration - Loop 3 Sensor 8
Type GAS Zone 203 Cell 0
Zone <Storage area >
Loc. <First IIG4 >
Sensitivity: Alarm=12.0mA Pre= mA
=select *=edit =next device =finish
10.0
Device Configuration - Loop 3 Sensor 8
Type GAS Zone 203 Cell 0
Zone <Storage area >
Loc. <First IIG4 >
Sensitivity: Alarm=12.0mA Fault= mA
=select *=edit =next device =finish
4.0
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