Commissioning Instructions

Step 8 – Fault detection and diagnostics parameters
25
Unrestricted
A6V12035398
Dual Duct flow fault and diagnostics
Configuration Duct 1 and Duct 2:
Descriptor
Object
Type
Default
Value
Units
Enumeration
Abbreviated Name
(BACnet)
Supply air flow fault 1
MCalcVal
Normal
1: Normal
2: Hi Flow
3: Low Flow
SU1FLOW FLT
(Su1AirFlFlt)
Supply air flow fault 2
MCalcVal
Normal
1: Normal
2: Hi Flow
3: Low Flow
SU2FLOW FLT
(Su2AirFlFlt)
Supply unstable control fault 1t
BCalcVal
Normal, Fault
SU1UNSTB FLT
(ExUnstblCtlFlt)
Supply unstable control fault 2t
BCalcVal
Normal, Fault
SU2UNSTB FLT
(SU2UnstblCtlFlt)
Supply unstable control reset 1
MTrgVal
Ready
1: Ready
2: Reset
SU1UNSTB RST
(Su1UnstblCtlRst)
Supply unstable control reset 2
MTrgVal
Ready
1: Ready
2: Reset
SU2UNSTB RST
(Su2UnstblCtlRst)
Supply airflow fault tolerance 1
Difference between measured airflow
and setpoint required to trigger the air
flow setpoint fault.
ACnfVal
100
(170)
(47)
Ft3/min
(m3/hr)
(lps)
(SuAflFltTol1)
Supply airflow fault tolerance 2
Difference between measured airflow
and setpoint required to trigger the air
flow setpoint fault.
ACnfVal
100
(170)
(47)
Ft3/min
(m3/hr)
(lps)
(SuAflFltTol2)
Supply air flow fault delay 1
The duration the air flow setpoint
tolerance must be exceeded to trigger
the air flow setpoint fault.
ACnfVal
600
s
(SuxAflFltDly1)
Supply air flow fault delay 2
The duration the air flow setpoint
tolerance must be exceeded to trigger
the air flow setpoint fault.
ACnfVal
600
s
(SuxAflFltDly2)
Supply position tolerance 1
Damper needs to move this % before it
is considered an oscillation.
ACnfVal
2
%
(SuPosTol1)
Supply position tolerance 2
Damper needs to move this % before it
is considered an oscillation.
ACnfVal
2
%
(SuPosTol2)
Supply position change limit [count 1]
Number of oscillations needed to
trigger the fault alarm.
ACnfVal
5
(SuPosChgLim1)
Supply position change limit [count 2]
Number of oscillations needed to
trigger the fault alarm.
ACnfVal
5
(SuPosChgLim2)