SFPTchiller

Chiller Controller..  For use with centrifugal, absorption, reciprocating, and other models of chillers. 
 

Network Variables

Configuration Properties

nviChillerEnable
nviCoolSetpt
nvoActiveSetpt
nvoOnOff

nviCapacityLim
nviEntChWTemp
nviHeatSetpt
nviMode
nvoActCapacity
nvoAlarmDescr
nvoCapacityLim
nvoChillerStat
nvoEntChWTemp
nvoEntCndWTemp
nvoLvgChWTemp
nvoLvgCndWTemp

nciChillerEnable
nciCoolSetpt
nciMaxSendTime
nciMinSendTime

nciCapacityLim
nciDefaults
nciHeatSetpt
nciLocation
nciMode
nciPwrup
nciRCvHrtBt

 

Details:

Resource Set: Standard 00:00:00:00:00:00:00:00-0
Index: 46
Obsolete: no
Key: 8040
Inheriting: no


Mandatory Network Variables

nviChillerEnableChiller enable.:   Request start/stop chiller. 
Member Number: 1
Base type:
SNVT_switch
Direction: input
Service: any
nviCoolSetptCool setpoint.:   Desired temperature of leaving chilled water. 
Member Number: 2
Base type:
SNVT_temp_p
Direction: input
Service: any
Minimum: -12,20
Maximum: 48,80
nvoOnOffOn or off state.:   Chiller on/off run state. 
Member Number: 3
Base type:
SNVT_switch
Direction: output
Service: acknowledged
nvoActiveSetptActive setpoint output.:   Active cool or heat setpoint. 
Member Number: 4
Base type:
SNVT_temp_p
Direction: output
Service: acknowledged
Minimum: -40,00
Maximum: 93,00


Optional Network Variables

nviCapacityLimCapacity limit input.:   Capacity limit of chiller. 
Member Number: 5
Base type:
SNVT_lev_percent
Direction: input
Service: any
Minimum: 0,000
Maximum: 160,000
nviEntChWTempEntering chilled-water temperature input.:   Accommodates remote temperature-sensor input. 
Member Number: 6
Base type:
SNVT_temp_p
Direction: input
Service: any
Minimum: -12,20
Maximum: 48,90
nviModeChiller mode.:   Chiller modes. 
Member Number: 7
Base type:
SNVT_hvac_mode
Direction: input
Service: any
nviHeatSetptHeating setpoint.:   Heating setpoint. 
Member Number: 8
Base type:
SNVT_temp_p
Direction: input
Service: any
Minimum: 10,00
Maximum: 93,00
nvoActCapacityActual capacity level.:   Actual running capacity of unit. 
Member Number: 9
Base type:
SNVT_lev_percent
Direction: output
Service: acknowledged
Minimum: 0,000
Maximum: 160,000
nvoCapacityLimCapacity limit.:   Present capacity limit setting of chiller. 
Member Number: 10
Base type:
SNVT_lev_percent
Direction: output
Service: acknowledged
Minimum: 0,000
Maximum: 160,000
nvoLvgChWTempLeaving chilled-water temperature.:   Leaving chilled-water temperature. 
Member Number: 11
Base type:
SNVT_temp_p
Direction: output
Service: acknowledged
Minimum: -40,00
Maximum: 118,00
nvoEntChWTempEntering chilled-water temperature.:   Entering chilled-water temperature. 
Member Number: 12
Base type:
SNVT_temp_p
Direction: output
Service: acknowledged
Minimum: -40,00
Maximum: 118,00
nvoEntCndWTempEntering condenser-water temperature.:   Entering condenser-water temperature. 
Member Number: 13
Base type:
SNVT_temp_p
Direction: output
Service: acknowledged
Minimum: -40,00
Maximum: 118,00
nvoLvgCndWTempLeaving condenser-water temperature.:   Leaving condenser-water temperature. 
Member Number: 14
Base type:
SNVT_temp_p
Direction: output
Service: acknowledged
Minimum: -40,00
Maximum: 118,00
nvoAlarmDescrAlarm annunciation text.:   Character string (30 characters max) 
Member Number: 15
Base type:
SNVT_str_asc
Direction: output
Service: acknowledged
nvoChillerStatChiller status.:   Chiller states or modes. 
Member Number: 16
Base type:
SNVT_chlr_status
Direction: output
Service: acknowledged


Mandatory Configuration Properties

nciChillerEnableChiller enable.:   The default power-up and restart modes of the device when the default behavior selector is set to zero. 
Member Number: 1
Base type:
SCPTpwrUpState
Applies to SFPTchiller
Array: not permitted
Default: 0,0 0
nciMaxSendTimeMaximum send time.:   The maximum period of time between consecutive transmissions of the current value. 
Member Number: 2
Base type:
SCPTmaxSendTime
Applies to SFPTchiller
Array: not permitted
Default: 0,0
nciMinSendTimeMinimum send time.:   The minimum period of time between consecutive transmissions of the current value. 
Member Number: 3
Base type:
SCPTminSendTime
Applies to SFPTchiller
Array: not permitted
Default: 0,0
nciCoolSetptCooling setpoint.:   The default setpoint for the leaving chilled water temperature in cooling mode when the default behavior selector is set to zero. 
Member Number: 5
Base type:
SCPTcoolSetpt
Applies to SFPTchiller
Array: not permitted
Default: 7,20


Optional Configuration Properties

nciCapacityLimChiller capacity limit.:   The default value for the capacity limit of the chiller when the default behavior selector is set to zero. 
Member Number: 4
Base type:
SCPTlimitChlrCap
Applies to SFPTchiller
Array: not permitted
Default: 100,000
nciHeatSetptHeating setpoint.:   The default setpoint for the leaving water temperature in heating mode when the default behavior selector is set to zero. 
Member Number: 6
Base type:
SCPTheatSetpt
Applies to SFPTchiller
Array: not permitted
Default: 35,00
nciModeHVAC mode.:   The default operating mode of the device when the default behavior selector is set to zero. 
Member Number: 7
Base type:
SCPThvacMode
Applies to SFPTchiller
Array: not permitted
Default: HVAC_COOL
nciLocationLocation:   Provides descriptive physical location information related to the object. 
Member Number: 8
Base type:
SCPTlocation
Applies to SFPTchiller
Array: not permitted
Default: 00*31
nciDefaultsDefault behavior.:   Selects which set of values will be used on power-up and communication failure, between the stated default values (0), or manufacturer-specified values (1) 
Member Number: 9
Base type:
SCPTdefltBehave
Applies to SFPTchiller
Array: not permitted
Default: 0,0 0
nciRCvHrtBtMaximum receive time.:   The maximum period of time that may expire with no updates on the associated input network variables before the object goes into heartbeat failure mode. A zero value disables the mechanism.  
Member Number: 10
Base type:
SCPTmaxRcvTime
Applies to SFPTchiller
Array: not permitted
Default: 0,0
nciPwrupPower-up delay.:   The minimum period of time after power-up or re-establishment of communications before a control action takes place. 
Member Number: 11
Base type:
SCPTpwrUpDelay
Applies to SFPTchiller
Array: not permitted