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110013961AA

 

date of change: 18.08.2008

    

page: 5/19 

2.3

 

Connecting and Safety instructions 

----    Please read before connecting

Please read before connecting

Please read before connecting

Please read before connecting! 

! ----    

 

For safety reasons the control unit FR4 

FR4 

FR4 

FR4 shall not be used for applications different from those described 

in this manual.  

 

Before use please check the limits of this control unit as well as its applications.  

 Safety instructions

Safety instructions

Safety instructions

Safety instructions    

Before connecting the unit please check wether the supply voltage is correct. Please pay attention to the 
prescribed ambient conditions respectively their humidity and temperature limits. Should these conditions 
not be followed, malfunctions can not be excluded. 
Attention

Attention

Attention

Attention::::  
Before switching-on the unit, please check once again correct connection. 
Never run this unit without housing. 
Please install the sensor where it is not accessible for the end customer 
Please consider the maximum current which can be applied to each relay (see technical data / point 1). 
Please ensure that all sensors are installed with enough distance to under-voltage cables. By this, distorted 
temperature measurements  can  be  avoided  and the unit  is  protected  from  voltage  interspersion  by  the 
sensor-inputs. 

Installation 

Installation 

Installation 

Installation aaaand 

nd 

nd 

nd mounting

mounting

mounting

mounting    

The control unit FR4

FR4

FR4

FR4 shall be mounted on panel in a 71x29 mm

71x29 mm

71x29 mm

71x29 mm hole and fixed by the fastening frame.  

For a faultless operation the ambient temperature should be between 0 und 50 °C. Please avoid intense 
vibration, aggressive gases, high fouling or humidity.  
You have to care for enough air circulation at the air slots.  

Ele

Ele

Ele

Elecccctr

tr

tr

trical

ical

ical

ical    co

co

co

connections

nnections

nnections

nnections    

The  control  unit  FR4

FR4

FR4

FR4  is  provided  with  screw  terminals  for  a  wire  diameter  of 

2,5mm

2

.  Before  voltage 

supply  is  connected  please  make  sure  that  the  auxiliary  energy  complies  with  the  instrument’s  require-
ments. Please ensure that the inlet cables are installed with enough distance to under-voltage cables. 
Do not exceed the maximum voltage allowed on each relay.  

Sensor

Sensor

Sensor

Sensor    connections

connections

connections

connections    

The sensor peak should be mounted upwards in order to avoid accumulation of liquids or condense wa-
ter. We recommend to place the thermostat away from air flow in order to have a correct measurement 
of the average room temperature. 

These instructions contain all necessary information for installation of the control unit. In case you need 
further information respectively explanation our technical after-sales service will be at your disposal 
(

 

06691/76 –124, or 

 

[email protected]

). 

In the course of further developments we reserve the right to technical modifications without prenotice. 
Guarantee  and  liability  conditions  of  Konvekta  AG’s  general  business  conditions  are  not  enlarged  by  the 
above  notes.  Indications  and  photos  should  neither  be  copied  and  circulated  nor  used  for  competitor’s 
purposes. All rights according to the copyright remain expressly reserved.  

Manufacturer: KONVEKTA AG, 

 KONVEKTA AG, 

 KONVEKTA AG, 

 KONVEKTA AG, P.O. Box

P.O. Box

P.O. Box

P.O. Box 2280, 34607 Schwalmstadt

 2280, 34607 Schwalmstadt

 2280, 34607 Schwalmstadt

 2280, 34607 Schwalmstadt, Germany

, Germany

, Germany

, Germany 

Summary of Contents for FR4

Page 1: ...ctions for install Instructions for installa a a ation and tion and tion and tion and se se se ser r r rvice vice vice vice for control unit for control unit for control unit for control unit FR4 FR4 FR4 FR4 12 12 12 12 24 Volt DC 24 Volt DC 24 Volt DC 24 Volt DC ID 110013962AA ID 110013962AA ID 110013962AA ID 110013962AA a02 a02 a02 a02 Valid from 08 Valid from 08 Valid from 08 Valid from 08 200 ...

Page 2: ...ters in the m m m men en en enu u u u 9 9 9 9 5 1 Example for change of a parameter here parameter defrost interval di nt 9 5 2 Conversion to cooling with recirculated air defrosting or replace a FR1 FR2 or FR3 9 5 3 Conversion to cooling heating with hotgas defrosting with hotgas 10 6 6 6 6 Control of defrosting Control of defrosting Control of defrosting Control of defrosting 10 10 10 10 7 7 7 7...

Page 3: ... consumption Power consumption Power consumption Power consumption 3 VA max Display Display Display Display 4 digit blue LED height 12mm Inputs Inputs Inputs Inputs 2 x PTC sensor Rela Rela Rela Relay outputs y outputs y outputs y outputs c c c compre ompre ompre ompressor ssor ssor ssor Relay NOC normally open contact 16 A defrost defrost defrost defrost Relay change over contact 8 A fans fans fa...

Page 4: ...g functions can be adjusted room temperature only refrigeration or refrigeration and heating with hot gas automatic defrosting hot gas or recirculating air manual defrosting hot gas or recirculating air Faults are shown in the display via flashing indication see point 4 This present instructions for installation and service is amended by the operating instructions for refrigeration units KONVEKTA ...

Page 5: ...ature should be between 0 und 50 C Please avoid intense vibration aggressive gases high fouling or humidity You have to care for enough air circulation at the air slots Ele Ele Ele Elec c c ctr tr tr trical ical ical ical co co co connections nnections nnections nnections The control unit FR4 FR4 FR4 FR4 is provided with screw terminals for a wire diameter of 2 5mm2 Before voltage supply is connec...

Page 6: ...perature Indication of temperature Indication of temperature Indication of temperature setpoint setpoint setpoint setpoint Press button P The display shows alternately SP 1 and the current adjusted setpoint Change of the setpoint Change of the setpoint Change of the setpoint Change of the setpoint To change the setpoint you have to press button UP or DOWN within 15 seconds until the desired setpoi...

Page 7: ...C Now press button P once and the new value will be stored A A A Attention ttention ttention ttention The new value will be automatically adopted and stored if it is not confirmed within 15 sec onds In refrigeration operation the room temperature is indicated LED s for compressor Comp and fans Fan are illuminated Drive operation Drive operation Drive operation Drive operation Stand Stand Stand Sta...

Page 8: ... 0 0 0 0 3 3 Sampling of operating hours Switch on control unit FR4 with button U Press button once Now the total operating hours of the refrigeration unit will be indicated for approx 5 seconds 3 4 Sampling of operating hours since last service Switch on control unit FR4 with button U Press button twice Now the operating hours of the refrigeration unit since the last service are indicated for app...

Page 9: ...der to change the defrosting intervals please browse with buttons and until group dEF appears in the display By pressing button P you open this group First the display shows parameter dtyP blinking By pressing buttons and you can choose paramenter di nt parameter di nt is now blink ing in the display By pressing button P once the current setting is shown di nt and the adjusted value 1 30 are blink...

Page 10: ...ressor 6 6 6 6 Control of defrosting Control of defrosting Control of defrosting Control of defrosting Factory setting of control unit FR4 is hot gas defrosting In case of use in refrigeration units with recircu lated air defrosting the following parameters have to be changed parameter dtyP in group dEF has to be changed from in to FdE parameter tdCO in group dEF has to be changed from 1 to off pa...

Page 11: ...y 4 Check the LED signal of the FR4 copy key In case of green LED a configuration has already been loaded in case of green blinking or red blinking LED there is no valid configuration 5 Press button on FR4 copy key 6 Check the LED signal After pressing the button the LED will be red and after successful data transmis sion the LED will be green 7 Now FR4 copy key can be plugged off If this configur...

Page 12: ...agnetic valve on Recirculated Recirculated Recirculated Recirculated air defrosting air defrosting air defrosting air defrosting COMP inactive compressor off FAN active fan on DEF inactive magnetic valve off 8 3 Neutral zone cooling heating with hot gas and defrosting with hot gas see changes in parameters point 5 3 Cooling Cooling Cooling Cooling valid if valid if valid if valid if SP HI SP HI SP...

Page 13: ... OUT3 5A AC1 2A AC3 250 VAC DEF OUT2 8A AC1 3A AC3 250 VAC NO C 1 NO NC 2 3 NO 4 5 DEF 7 SUPPLY 6 OUTPUTS 10 8 9 room INPUTS COMP FAN evap 1HP 250VAC 1 2HP 125VAC 1 2HP 250VAC 1 3HP 125VAC OUT2 OUT1 OUT3 Pr 1 Pr 2 1 8HP 250 125 VAC 9 2 Parameter chart Group SP parameter of the setpoint refers to Pr1 Par Description Range Def SPAt Active setpoint 1 2 1 SP1 Setpoint 1 SPLL SPHL 1 0 SP2 Setpoint 2 SP...

Page 14: ...ysteresis for compressor OUT Only visible if control mode is Func HEAT or CooL If control mode is FunC nr then it is hidden 0 30 C F 2 0 2 0 tonE On time outlet OUT with defective sensor Pr1 OFF 99 59 min sec OFF OFF toFE Off time outlet OUT with defective sensor Pr1 OFF 99 59 min sec OFF OFF tCC Continuous operation OFF 99 59 hrs min OFF OFF Func Operating mode outlet OUT control mode HEAt heatin...

Page 15: ... hrs m in 1 30 1 30 1 30 1 30 1 30 dEFE Maximum duration of a defrost cycle dEF on duration of defrosting if not interrupted by Pr2 tEdF tSdF 0 01 99 59 min s ec 15 00 15 00 15 00 15 00 15 00 tEdF Defrost limit temperature if the temperature Pr2 is higher than the adjusted value tEdF then dEF will be switched off 58 302 C F 8 0 8 0 8 0 8 0 8 0 tSdF Defrost switch on temperature temperature Pr2 mus...

Page 16: ...ot indicate this rise the functions con tained in the parameters dLo display lock during defrost cycle and Etdu display unlock difference after finished defrost cycle are used The parameter dLo Lb causes the indication dEF during a defrost cycle Completion of defrost cycle the indication PdEF is suppressed as the temperature Pr1 is always under the value SP Etdu 0 30 C F 30 0 30 0 30 0 30 0 300 NO...

Page 17: ...lways off temperature within fan line ON FAn dEF connected dEF on FAn on dEF off FAn off OFF fan FAn always off Only visible if defrosting mode dtyP EL or in If defrosting mode is dtyP FdE then it is hidden And fan Fan always on On OFF OFF OFF OFF FLt Top limit temperature fan if temperature Pr2 is higher than adjusted value FLt then fan is off upper limit fan line consider FLt Fct 58 302 C F 50 0...

Page 18: ...on Range Def Out1 Operating configuration outlet OUT1 Out temperature control compressor Refers to Pr1 SP HI LO dEF defrost instrument FAn fans AuS auxiliary outlet ALt confirmable alarm pressing of any button always resets the alarm AL standard alarm ALL stored alarm alarm remains in the background also if alarm does not exist any more reset with any button only if alarm condition is not existing...

Page 19: ...grammed value is exceeded SEr will be indicated in the display for approx 5 seconds This will be indicated with every switching on of the FR4 as long as the current value is than the pro grammed value OFF 9999 2000 rSEc Reset service hours counter By enter of password 181 minus 181 the ser vice hours counter is reset to 0 If you enter the wrong password the display returns to normal indication and...

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