Lennox @DNOVA 2mAC ADVANCED CONTROLLER Installation, Operating And Maintenance Download Page 21

IOM / @DNOVA-µAC-0907-E - Page 9

cod.  Description  

P5= 1   P5= 2   P5= 3   P5= 4   P5= 5

E1  

probe B1  

auto  

auto  

man  

auto  

auto

E2  

probe B2  

auto  

auto  

man  

auto  

auto

E3  

probe B3  

auto  

auto  

man  

auto  

auto

E4  

probe B4  

auto  

auto  

man  

auto  

auto

EE  

EEPROM run  

man  

man  

man  

man  

man

EL  

insuff. power on EEPROM write  

man  

man  

man  

man  

man

H1 

high pressure C1 

man 

man 

man 

man 

man

H2 

high pressure C2 

man 

man 

man 

man 

man

L1 

low pressure C1 

man 

auto 

man 

auto 

auto

L2 

low pressure C2 

man 

auto 

man 

auto 

auto

F1 

filter dirty 

man 

auto 

man 

man 

auto

FL 

flow 

man 

auto 

man 

man 

man

CF 

water flow 

man 

auto 

man 

auto 

auto

r1 

heating elements 

man 

man 

man 

man 

man

At 

supply temp  

man  

auto  

man  

man  

man

AH  

humidifier  

man  

auto  

man  

auto  

auto

Lt  

low temperature  

man  

auto  

man  

auto  

auto

ht  

high temperature prealarm  

man  

auto  

man  

auto  

auto

Ht  

high temperature 

man  

auto  

man  

auto  

auto

LH  

humidity  

man  

auto  

man  

auto  

auto

HH  

high humidity  

man  

auto  

man  

auto  

auto

tC  

comp. thermal  

man  

auto  

man  

man  

auto

tF 

fan thermal  

man 

auto 

man 

man  

auto

t1 

fan 1 thermal  

man  

auto  

man  

man  

auto

t2 

 fan 2 thermal  

man  

auto  

man  

man  

auto

AL  

serious generic  

Pb  

Pb  

Pb  

Pb  

Pb

FA  

smoke-fire  

man  

auto  

man  

man  

auto

pA  

power fail (shelters)  

auto  

auto  

auto  

auto  

auto

CL  

clock  

man  

man  

man  

man 

 man

P6 Delta from the effective set point for low temperature 

alarm

P7 Delta from the effective set point for high temperature 

alarm

Sets the alarm threshold for low (Lt) and high (Ht) ambient 

temperature. This value is specified as a differential in respect 

to  the  effective  setpoint,  considering  any  compensation 

operations (see parameters /1, rG, rH, Hc). These alarms, in 

the case of automatic reset, have an hysteresis of 1 degree 

and are generated only when the machine is active.

Range P6/P7: 0÷50°c 0÷90°F Def. P6/P7: 10

P8 Delta from set point for low humidity alarm

P9 Delta from set point for high humidity alarm

Sets the alarm threshold for low (LH) and high (HH) ambient 

humidity. This value is specified as a differential in respect to 

the effective setpoint. These alarms, in the case of automatic 

reset, have an hysteresis of 1% and are generated only when 

the machine is active and if the humidifier is present (for low 

humidity alarm).

Range P8/P9: 0÷50 %rH Def. P8/P9: 20

PA High/low temperature/humidity alarm delay on start-

up

Sets the delay in recognising the high/low temperature and 

humidity alarms on starting the machine, that is when switching 

from STAND-BY => ON.

N.B. The low humidity alarm is delayed by the start-up of the 

humidifier. This avoids low humidity alarms on resetting any 

humidifier alarms.

Range: 0÷150 min Def.: 20

Pb type of management of generic alarm input ID5

Sets  the  type  of  alarm  generated  by  input  ID5  (AL). This 

function is enabled only with parameter H2= 0 and can be 

managed even with the machine in stand-by (see table on 

general parameters P)

Range: 0÷6 flag Def.: 1

Pc Generic alarm delay

Sets the delay in activation of the generic alarm ID5 (AL). This 

delay is refereed to the activation of the alarm itself.

Range: 0÷250s Def.: 60

DESCRIPTION AND CONFIGURATION OF THE PARAMETERS

Summary of Contents for @DNOVA 2mAC ADVANCED CONTROLLER

Page 1: ...Providing indoor climate comfort DNOVA AC IOM 0907 E Installation operating and maintenance DNOVA 2 AC ADVANCED CONTROLLER...

Page 2: ......

Page 3: ...rameters 7 Parameter modification 7 DESCRIPTION AND CONFIGURATION OF THE PARAMETERS 9 probe parameters 12 r regulation parameters 13 c compressor management parameters 16 F fan management parameters 1...

Page 4: ...rs can be configured not only using the keypad located on the front panel but also using a hardware key and or via serial line GENERAL CHARACTERISTICS General description The AC is an electronic contr...

Page 5: ...mbol off the Set point is displayed time band selected dehumidification active ventilation active fan speed cooling active number 1 or 2 cooling actuators opening cooling valve or in shelter mode open...

Page 6: ...the Factory parameters Pressed together for 2 secs reset the alarms Status indicators The main states of the regulator power supply present alarm active and remote ON OFF input status are displayed to...

Page 7: ...Hc Damper ON OFF Out4 Damper 2 Hc Out5 Supply fan Relay digital outputs Connector 3 Out 6 Alarm HF Out 7 Alarm HA Rotation control H2 Analogue outputs Connector 1 Y1 Damper output 2 Hc Y2 Condensatio...

Page 8: ...ia the master unit 1 sends the command to activate and deactivate the unit in stand by the command is updated every 10 minutes Heating element Air outlet Air inlet Air flow diverter Condenser air outl...

Page 9: ...arameter HL Level Access DIRECT D immediate access USER U access via password 22 parameter HH FACTORY F access via factory password 177 Parameter modification Accessing Direct parameters D The value o...

Page 10: ...ed while the and buttons can be used to modify such value Press enter again to temporarily store the new value Then using the and buttons scroll the parameters menu repeating the previous steps for ea...

Page 11: ...allows the key to be programmed with the machine s parameters During this operation the message EC is displayed and in the case of errors ECEE Adjusting LCD contrast The contrast of the display can b...

Page 12: ...mperature Set Point heating Minimum temperature set point also for compensation Maximum temperature setpoint also for compensation Minimum humidity set point Maximum humidity set point Type of tempera...

Page 13: ...on If used in condensation the fan is switched off below the value of F5 with an hysteresis of 0 5 bar for pressure or 1 C for temperature Minimum Triac voltage threshold Maximum Triac voltage thresho...

Page 14: ...U o M Var Def Pres U F F F 0 250 s 10 20 U F F F 0 90 s 1 5 U F F F 0 250 s 1 40 U U U U 0 15 min 1 0 F F F 1 5 flag 1 1 5 U F U U 0 50 90 C F 1 10 U F U U 0 50 90 C F 1 10 U F U U 0 50 rH 1 20 2 0 U...

Page 15: ...ling ON OFF with Out3 4 condensation control Function of probe B3 0 humidity control 1 condensation control ON OFF digital input 0 absent 1 present Alarm relay logic 0 de energised in alarm for all al...

Page 16: ...nge 10 0 10 0 rH bar Def 0 0 9 Calibration input B4 Corrects the value measured by B4 Range 6 0 6 0 C 10 8 10 8 F Def 0 0 A Digital filter Stabilises the coefficient used in the digital filtering of t...

Page 17: ...compensation of the set point using the external air probe this value also represents the lower limit for the excursion of the set point Range 20 rb C 4 rb F Def 0 rb Maximum temperature set point Lim...

Page 18: ...oo low temperature being sent into the room In the ED and CW configurations the actuators turn OFF progressively when the supply temperature falls below the m set the differential is fixed at 3 C Duri...

Page 19: ...ing of limits F2 and F3 0 always ON 1 proportional speed regulation with minimum speed 2 proportional speed regulation with cut off The values 1 or 2 indicate operation of the supply fan in proportion...

Page 20: ...Sets the operating time at maximum speed on starting up the fans if used for condensation control to overcome the mechanical inertia of the motor If set to 0 the function is not performed that is the...

Page 21: ...ature This value is specified as a differential in respect to the effective setpoint considering any compensation operations see parameters 1 rG rH Hc These alarms in the case of automatic reset have...

Page 22: ...lows ID7 24Vac Heating Set r9 ID7 0 Cooling Set r1 When the machine is in cooling mode the presence and the number of heating elements depends on parameter H6 in heating mode on the other hand the coo...

Page 23: ...minutes in stand by or time band sleep mode for a period of H7 2 seconds These procedures like the complete closing of the valve on instrument start up allow the degree of opening of the valve to be a...

Page 24: ...energised only for serious alarms Range 0 3 flags Def 0 HG Delay on start up Sets the delay time on each switching from stand by to ON or POWERON During this phase the green LED is on but all actuato...

Page 25: ...m the modifications made Time bands Entering the parameter rt see USER parameter modification allows the selection of rt 1 or 2 enabling the time band function Pressing the Sel button displays in sequ...

Page 26: ...wed by the Alarm button The code of the last alarm event is shown and on repeatedly pressing Sel the hour minute and the date The and buttons scroll the alarm data In places where no alarm has been re...

Page 27: ...board EEPROM and must be performed when installing the board itself The alarm codes displayed are those reported in the table in the chapter on the alarms in addition other special codes have been in...

Page 28: ...mm FC ON ON 34 nn counter fan imm FA ON ON serious alarms in the configuration with two alarm relays these activate the alarm output the other alarms ON the other hand activate the dehumidification In...

Page 29: ...ion of the compressor and causes its immediate switching off without waiting the corresponding delay times The alarm H2 is managed only if parameter H5 2 or 4 two independent circuits If condensation...

Page 30: ...PA shelter power failure alarm External power failure alarm delayed by 2 seconds This is generated for models configured as shelters when input ID6 is open it causes the immediate switching off of the...

Page 31: ...1 km Cables 1 twisted pair and shield AWG20 22 with capacity between leads 90pF m e g BELDEN 8761 8762 cables Protection against electric shock the device guarantees only a functional insulation betw...

Page 32: ...d Input ID1 for Remote ON OFF switches on the machine when powered Input ID7 for Cooling heating enables heating operation when powered Y1 0 10Vdc output not optically isolated from power supply poten...

Page 33: ......

Page 34: ...IOM 0907 E BELGIUM LUXEMBOURG CZECH REPUBLIC FRANCE GERMANY NETHERLANDS POLAND PORTUGAL RUSSIA SLOVAKIA SPAIN UKRAINE UNITED KINGDOM AND IRELAND OTHER COUNTRIES Due to Lennox s ongoing commitment to...

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