Controller MXDx3d7

Configuration Parameters

ref Description default range
C1 SACT sensor action

0 use local sensor unless remote sensor connected see use of nviRemoteTemp for Open systems

1 average valid sensor values

2 maximum of valid sensor values

3 minimum of valid sensor values

0 0 to 3
C2 HPRD heating valve period or minimum on time depends on driver type 1 to 60 secs/10
C3 HDLY Interlock delay

negative value delays fan (or pump) after heating starts

positive value cause run on of fan after heating shuts down

0 -30.0 to 30.0 minutes
C4 MIND Minimum demand 4 0 to 100
C5 MNFA Minimum Fresh Air 0 -100 to 100 %
C6 MXAQ maximum Fresh Air when Air Quality reading equal to or greater than this value 80 0 to 100%
C7 MNAQ minimum value for Air Quality overide 20 0 to 100%
C8 DMPC percentage of the AHU heating and cooling demand which is used to modulte the dampers. Zero disables this feature. 0 0 to 100%
C9 ALRM alarm mode

0 ignore alarms

1 report alarms

2 report alarms, shut down all outputs on alarm

3 report alarms, shut down all outputs on STOP alarm or sensor fail alarm

1 0 to 3
C10 ALST not used 0 0 to 1
C11 MXVA* Maximum voltage channel A 10.0 0.0 to 10.0 volt
C12 MNVA* Minimum voltage channel A 0.0 0.0 to 10.0 volt
C13 MXVB* Maximum voltage channel B 10.0 0.0 to 10.0 volt
C14 MNVB* Minimum voltage channel B 0.0 0.0 to 10.0 volt

*AOP models only

Monitoring Parameters

ref   Description default range
    INPUTS    
I1 (C30) FRST Frost   0 to 1
I2 (C31) OCCD AHU Occupied   0 to 1
I3 (C32) OSRT Optimum Start not used   0 to 1
I5 (C34) COOL Cool mode    
I6 (C35) RLYA relay A   0 to 1
I7 (C36) RLYB relay B   0 to 1
I8 (C37) RLYC relay C   0 to 1
    SWITCHES    
W1

(C38)

AUTO Controller in automatic control    
W2

(C39)

OVRD Override

W1 and W2 used together with Doorway Auto/manual dialog box

   
    SENSORS    
S1 (C50) TEMP Mixed Air temperature   0 to 95 deg C
S2 (C51) HCOP Controller output   -100 to 100
S3 (C52) REQD Controller current setpoint   0 to 95 deg C
S4 (C53) AIRQ Air Quality sensor value   0 to 100
S5 (C54) POSN Demand to damper   0 to 100
    KNOBS    
K1 MNFA Minimum Fresh Air 0 -100 to 100 %
K2 MXAQ maximum Fresh Air when Air Quality reading equal to or greater than this value 80 0 to 100%
K3 MNAQ minimum value for Air Quality overide 20 0 to 100%

 

Control loop parameters

ref   Description default range
C70 UNDH sets very Low muzzy level for heating loop 6.0 10 to 200
C71 OVRH sets very High muzzy level for heating loop 6.0 10 to 200
C72 DBBH deadband sets limit for OK band for heating loop 2.0 10 to 200
C73 RCGH max rate of change heating   1 to 250
C74 GN H gain heating 20 1 to 250
C75 UNDC sets very Low muzzy level for cooling loop 6.0 10 to 200
C76 OVRC sets very High muzzy level for cooling loop 6.0 10 to 200
C77 DBBC deadband sets limit for OK band for cooling loop 2.0 10 to 200
C78 RCGC max rate of change cooling   1 to 250
C79 GN C gain cooling 20 1 to 250

Plot configuration

ref   Description default range
C130 PN A config variable number for channel A 51 0 to 255
C131 PT A period code for plot A 1 1 to 4
C132 PN B config variable number for channel B 52 0 to 255
C133 PT B period code for plot B 1 1 to 4

Driver Parameters

ref   Description default range
C150 HTYP Channel 1 (heating) driver type 1 0 to 9
C151 HSTG Channel 1 number of  stages 2 0 to 8
C152 CTYP Channel 2 (cooling) driver type 1 0 to 9
C153 CSTG Channel 2 number of  stages 0 0 to 8
C154 FTYP not used   0 to 7
C155 FSTG not used   0 to 5