OFA200 Tim Stockwell.

OFA200 Tim Stockwell

Hoval Steuerung/Regeltechnik/Software - Verkäufertagung 2011
OFA200 Overview Application area MultiJet, UltraOil, Oil- and Gas fan burner (1- and 2-Stage, modulating) Introduction 2014 with TTE Supplier Adlos, Balzers (FL) © Hoval / Nov-18 Hoval Steuerung/Regeltechnik/Software © Hoval

Instalation situation
All MultiJet and UltraOil <50 © Hoval / Nov-18 Hoval

Instalation situation
UltraOil from 50kW © Hoval / Nov-18 Hoval

Layout © Hoval / Nov-18 Hoval Steuerung/Regeltechnik/Software © Hoval

Fixe I/Os (Config) WF Boiler sensor PW Water pressure sensor (ON/OFF) RS485 Communication to conroller Netz Power supply SK1 Condensation lifting-station SK2 Emergency-stop switch SK3 Fire protection switch SK4 STB / ATB SK5 Water pressure switch BR1 / BR2 Burner connection Y4 Additional air flap Y6 Main gas-valve/Oil magnetic-valve © Hoval / Nov-18 Hoval Steuerung/Regeltechnik/Software © Hoval

Status overview FA-Status 0 Passive state WEZ = OFF 1 Demand operable
2 WEZ locked (WEZ lock or AT lock activ) 3 Leadtime Oil-/Gas magnetic valve, mainpump/ shut-off device (Y6 ,Y10) 4 Leadtime fluegas flap/ additional air flap (feedback expected) 5 Clearance to start the boiler (ST1) 6 Stage 1 ON 61 Demand operable step 2 7 Stage 2 ON (only at 2 stage WEZ) 8 Stage 1 ON, Stage 2 locked (at lock WEZ ST2) 9 ON, start time modulation (only for modulating burners) 10 ON, free modulation (only for modulating burners) 11 OFF, follow-up time Oil-/Gas magnetic valve or shut-off device (Y6) 12 Follow-up time main pump (Y10) 13 WEZ blocked 14 WEZ locked 15 S3 Error 16 Locking external © Hoval / Nov-18 Hoval

Schaltfolge © Hoval / Nov-18 Hoval

Parameter overview OFA 200
Hoval Steuerung/Regeltechnik/Software - Verkäufertagung 2011 Parameter overview OFA 200 Information tree Information Counter Error Parameter tree Config System Burner Main pump Water pressure Thermostat External Relay test Matching © Hoval / Nov-18 Hoval Steuerung/Regeltechnik/Software © Hoval

Adjustable I/Os (Config)
Hoval Steuerung/Regeltechnik/Software - Verkäufertagung 2011 Adjustable I/Os (Config) WEZ Type OFF 1: One-stage WEZ 2: Two-stage WEZ 3: Modulating WEZ VA1 1: Main pump 2: Parallel WEZ-clearance 3: Thermostat operation 4: Operating indication 5: Error output VA10V (PWM) AUS 1: WEZ Output Set 2: WEZ Output Actual 3: WEZ Temperature Set 4: WEZ Temperature Actual 5: Main pump (Modulation) VA2 OFF 1: Main pump 2: Parallel WEZ-Clearance 3: Thermostat operation 4: Operating indication 5: Error output © Hoval / Nov-18 Hoval Steuerung/Regeltechnik/Software © Hoval

Adjustable I/Os (Config)
Hoval Steuerung/Regeltechnik/Software - Verkäufertagung 2011 Adjustable I/Os (Config) AGF OFF 1: Flue gas sensor 2: Information sensor 3: Boiler sensor 2 4: Return sensor 5: WEZ-lock 6: Stage lock Stage 2 VE1 Characteristic curve WF KTY PT1000 Characteristic curve AGF Characteristic curve VE1 © Hoval / Nov-18 Hoval Steuerung/Regeltechnik/Software © Hoval

Information STATUS FLOW WF FLOW 2 WF-2 RETURN RL FLUE GAS AGF WATER PRESSURE WD TEMPERATURE INFO 10V OUTPUT MAIN PUMP HP-ASP VALVE SK1 SK2 SK3 SK4 SK5 LOCK-WEZ VE- LOCK-ST2 VE- THERMOSTAT VA- BR1 BR2-OPEN BR2-CLOSED VERSION © Hoval / Nov-18 Hoval Steuerung/Regeltechnik/Software © Hoval

Counter + Error Count Operation time and starts of Stage 1 and Stage 2 Operation time and of modulation >50% and =<50% Memorize of 25 errors with 7 values each Sequence number Error code Date Time Operating status WF temperature VE1 temperature AGF temperature © Hoval / Nov-18 Hoval Steuerung/Regeltechnik/Software © Hoval

System Resets of WE, counter and errors Adjunstment operation-hour counter OFF: without count 1: Count at feedback / demand 2: Count only at feedback WEZ (depending boiler type) 3: Count only with feedback signal Characteristig error output 1: Locking 2: Locking, Blocking 3: Locking, Blocking, Warning Priorisation Set value 1: Heating circuit 2: Hot water 3: Always the higher © Hoval / Nov-18 Hoval Steuerung/Regeltechnik/Software © Hoval

Burner Minimum set value Maximum set value Emergency operation at bus failure OEM maximum temperature Temperature gradient (WF) K/min Lock time Number till locking Minimum running time AT-Lock Adjunstments sensor operating mode 1: Signal of KS / UB, Stages OFF 2: UB without error message (Burner OFF) 3: UB / KS warning message with clearance © Hoval / Nov-18 Hoval Steuerung/Regeltechnik/Software © Hoval

Burner Start-up differential to release operating point 1 Release operating hysteresis 1 Functions stage 2 Start-up differencial to release operating point 2 Release operating hysteresis 2 Stage 2 time-out at heating Stage 2 time-out at hot water Stage 2 hot water loading Delayed Complete blocked Stage 2 AT-Lock © Hoval / Nov-18 Hoval Steuerung/Regeltechnik/Software © Hoval

Burner © Hoval / Nov-18 Hoval

Burner Modulation Start output Start time Running time Output minimal Output maximal PI-K - increase PI-n – reset time PI-Ta – scan time Magnetic valve Opening time Close time AGF functions STB Block time and –temperature Flue gas /additional air monitoring Feedback burner (B4/B5) © Hoval / Nov-18 Hoval Steuerung/Regeltechnik/Software © Hoval

Main pump Lead / stopping time Operating mode 1: Boiler output 2: dT-Control (WF to RLF/WF2) Example main pump controlled by boiler output: Par V OFF voltage Par V Min. voltage (1) Par % Output value at min. voltage(1) Par V Max. voltage(2) Par % Output value at max. voltage (2) Par Hz PWM frequency © Hoval / Nov-18 Hoval Steuerung/Regeltechnik/Software © Hoval

Main pump Example main pump controlled by boiler output : Par % Start-up output Par Min. Start time dT Regulation Par %/K PI-Regulation K-Increase Par Sec. PI-Regulation Tn-Reset time Par Sec. PI-Regulation Ta-Scan time Par Priority dT Hzg. Par K dT Heating Par K dT Hot water Par V OFF voltage Par V Min. voltage (1) Par % Output value at min. voltage (1) Par V Max. voltage (2) Par % Output value at max. voltage (2) Par Hz PWM Frequency © Hoval / Nov-18 Hoval Steuerung/Regeltechnik/Software © Hoval

Water pressure and Thermostat
Hoval Steuerung/Regeltechnik/Software - Verkäufertagung 2011 Water pressure and Thermostat Water pressure Warning min. Blocking min. Warning max. Blocking max. Locking max. Time delay till error Thermostat function (VA1 / VA2) Sensor input Set value Switching differential © Hoval / Nov-18 Hoval Steuerung/Regeltechnik/Software © Hoval

External Adjustment for 0-10V output Example set temperature: Par °C Min. temperature (1) Par V Min. voltage (1) Par °C Max. Temperature (2) Par V Max. voltage (2) Par V Min. voltage Par V Max. voltage © Hoval / Nov-18 Hoval Steuerung/Regeltechnik/Software © Hoval

External Adjustment for 0-10V output Example set output (1/2 stage): Par V WEZ – OFF Par V WEZ – 1.Stage ON Par V WEZ – 2. Stage ON © Hoval / Nov-18 Hoval Steuerung/Regeltechnik/Software © Hoval

External Adjustment for 0-10V output Example set output (modulating): Par % Min. output (1) Par V Min. voltage (1) Par % Max. output (2) Par V Max. voltage (2) Par V Min. voltage Par V Max. voltage © Hoval / Nov-18 Hoval Steuerung/Regeltechnik/Software © Hoval

External Adjustment for 0-10V output Example actaul temperature: Par °C Min. temperature (1) Par ,0V Min. voltage (1) Par °C Max. temperature (2) Par V Max. voltage (2) © Hoval / Nov-18 Hoval Steuerung/Regeltechnik/Software © Hoval

External Adjustment for 0-10V output Example actual output: Par % Min. output (1) Par ,0V Min. voltage (1) Par % Max. output (2) Par V Max. voltage (2) © Hoval / Nov-18 Hoval Steuerung/Regeltechnik/Software © Hoval

Relaistest + matching Relay test Relay test active BR1 BR2 – open BR2 – close Valve (Y6) VA1 VA2 VA10V PWM Matching WF AGF VE1 PW © Hoval / Nov-18 Hoval Steuerung/Regeltechnik/Software © Hoval

OFA200 Tim Stockwell.

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