ATR243 User Manual - Northern Industrial

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8.3 Dual Action Heating-Cooling<strong>ATR243</strong> is also suitable also for systems requiring a combined heatingcoolingaction.The command output must be configured as Heating PID( = and with a greater than 0), and one of thealarms ( , or ) must be configured as .The command output must be connected to the actuator responsiblefor heat, while the alarm will control cooling action.The parameters to configure for the Heating PID are:= Command output type (Heating): Heating proportional band: Integral time of heating and cooling: Derivative time of heating and cooling: Heating time cycleThe parameters to configure for the Cooling PID are the following(example: action associated to alarm1):= Alarm1 selection (cooling): Proportional band multiplier: Overlapping/Dead band: Cooling time cycleThe parameter (that ranges from 1.00 to 5.00) determines theproportional band of cooling basing on the formula:Cooling proportional band = *This gives a proportional band for cooling which will be the same asheating band if = 1.00, or 5 times greater if = 5.00.The integral time and derivative time are the same for both actions.The parameterdetermines the percentage overlappingbetween the two actions. For systems in which the heating output andcooling output must never be simultaneously active a dead band( ≤ 0) must be configured, and vice versa you can configure anoverlapping ( > 0).ηττπ://νιχοντρολσ.χοm23
The following figure shows an example of dual action PID (heatingcooling)with = 0 and = 0.* (COOL)SPVPV< 0(HEAT)ACTIVECOMMAND OUTPUT (HEAT)ACTIVEALARM OUTPUT (COOL)* (COOL)SPVPV< 0(HEAT)ACTIVECOMMAND OUTPUT (HEAT)ACTIVEALARM OUTPUT (COOL)* (COOL)SPVPV< 0(HEAT)ACTIVECOMMAND OUTPUT (HEAT)ACTIVEALARM OUTPUT (COOL)24ηττπ://νιχοντρολσ.χοm
Page 2: Northern IndustrialReliable spares
Page 15 and 16: 6.3 Keys8 • Allows to increase th
Page 17 and 18: 7.5 Soft StartTo reach the setpoint
Page 19 and 20: 7.8 Memory CardParameters and setpo
Page 21 and 22: For the calibration procedure refer
Page 23: 8.2 Digital Input FunctionsDigital
Page 27 and 28: Modbus RTU protocol featuresBaud-ra
Page 29 and 30: 1016 Start/Stop0=controller in STOP
Page 31 and 32: 10 Configuration10.1 Modify Configu
Page 33 and 34: ATR243-31ABCCOMMAND ALARM 1 ALARM 2
Page 35 and 36: 13141516171819202122CommandState Er
Page 37 and 38: 293031Alarm 1 DelayAlarm 1SetpointP
Page 39 and 40: 40Alarm 3 StateOutputAlarm 3 output
Page 41 and 42: 55ConversionFrequencyFrequency of s
Page 43 and 44: 62636465GradientMaintenanceTimeUser
Page 45 and 46: 12 Alarm Intervention ModesAbsolute
Page 47 and 48: Band Alarm ( selection)PvComand Spv
Page 49 and 50: Lower Deviation Alarm ( selection)P
Page 51 and 52: 14 Summary of Configuration paramet
Page 53 and 54: Digital input functioningGradient f
Page 55 and 56: 54ηττπ://νιχοντρολσ.
Page 57: PIXSYSVia Tagliamento, 1830030 Mell

ATR243 User Manual - Northern Industrial

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