Tyco MX4428 technical manual Returned Analog Values, Type, Ror Slv, Co Cv Co Tv, Co Slv

F4000 MXP Engineering / Technical Manual		Document: LT0273
Event Log and Status at MX4428
6.1	RETURNED ANALOG VALUES

The MXP returns up to 4 different analog values per device - CV, TV, HH, and HL. The following table details what each value means for each device type.

Type	CV	TV	HH	HL
814H	Temperature	ROR	History High	History High of
	Current Value		of Temperature SLV	ROR SLV
814PH	Smoke CV	Smoke TV	HH percent*	Temp CV
			(max% of Temp SLV,
			Temp ROR SLV,
			Smoke SLV)
814CH	CO CV	CO TV	HH percent*	Temp CV
			(max% of Temp SLV,
			Temp ROR SLV,
			CO SLV)
814I	Current Value	Tracked Value	History High of SLV	History Low of
				SLV
MIM800	analog i/p	–	History High	History Low
MIM801	analog i/p	–	History High	History Low
CP820	analog i/p	–	History High	History Low
CIM800	analog i/p 1	analog i/p 2	Hist High (both)	Hist Low (both)
DIM800	analog i/p 1	analog i/p 2	Hist High (both)	Hist Low (both)
SNM800	EOL Supervision	Supply	History High EOL	History Low EOL
		Supervision	Supervision	Supervision
LPS800	Analog i/p 0	Analog i/p 1	History High of analog	History Low of
	(while not	(while not	i/p 0 (while not	analog i/p 0 (while
	operated)	operated)	operated)	not operated)
RIM800	–	–	–	–
VLC800	Current Value	Fixed at 12	History High %*	0

*HH percent will indicate whichever of Temperature, Rate of Rise, or Smoke/CO has been highest, in terms of the percentage of its alarm threshold. It will be rounded to the nearest 5%, and the last digit will indicate which type it represents. A last digit of 0 or 5 indicates smoke or CO. A last digit of 1 or 6 indicates temperature, and a last digit of 2 or 7 indicates temperature rate of rise.

For example, 51 will indicate that temperature has been highest at 48-52% of the alarm threshold. 65 will indicate smoke/CO has been highest, at 63-67% of the alarm threshold.

For temperature 20°C will be 0% and the alarm limit 100%.

All History High and History Low values (where used as maximum and minimum) will be based on Step Limited values i.e. the same values as are used for alarm comparison. However note that PreAlarm comparisons are performed using “CV”, i.e. values without Step Limited filtering. Therefore a PreAlarm may occur even though the “History High” value is less than the PreAlarm Threshold.

Page 6-2 24 March 2006 Issue 1.5