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OSAKA

 - USER MANUAL - B4U - v2 - PAG. 17

 

Protection class

: Class II 

Isolation

:  reinforced  between  the  low  voltage  parts  (power  supply 

and  relay  outputs)  and  the  front  panel;  Reinforced  between  low 
voltage parts (power supply and relay outputs) and very low voltage 
parts (inputs). 
 
 

8.2 - MECHANICAL CHARACTERISTICS 
Container

: UL 94 V0 self-extinguishing plastic. 

Heat and fire resistance category

: D 

Dimensions DISPLAY B4U

: 96 x 50 mm, depth. 22.5 mm 

Dimensions POWER UNIT B4U

: 92 x 92 mm, depth 27.8 mm 

Weight Display B4U

: about 70 g 

Weight Power Unit B4U

: about 130g 

Installation  Display  B4U

:  Device  to  be  incorporated  through  a 

recessed panel (maximum thickness 2 mm) in the 90 x 44 mm hole. 

Installation  Power  Unit  B4U

:  Device  to  be  incorporated  into  the 

panel. 

B4U Display Connections

: removable mini connectors. 

Power  Unit  B4U  connections

  (power  supply  and  outputs): 

removable 6-pole AMP MATE-N-LOK .250 "removable connector 

Connection Display B4U - Power Unit B4U

: 3 m MAX. Through the 

cable with removable mini-connectors. 

Pollution degree

: 2 

Ambient operating temperature

: 0… 60 ° C 

Operating ambient humidity

: less than 95% RH non-condensing 

Transport and storage temperature

: -

25… 60 ° C. 

 
 

8.3 - FUNCTIONAL CHARACTERISTICS

 

Temperature control

: ON / OFF 

Defrost control

: by intervals or by temperature with electric heating 

mode, gas reversal / hot cycle, for compressor stop. 

Measuring range

: -50 ... 99 ° C / -58 ... 99 ° F 

Screen resolution

: 1 ° or 0.1 ° (in the range of -9.9 ... 9.9 °) 

Total precision

: +/- (0.5% fs + 1 digit) 

Sampling time measurement

: 800 ms. 

Screen

: 2 white digits (optional blue) h 31 mm (DISPLAY B4U). 

Software class and structure

: A class 

Compliance: Directive 2004/108 / EC (EN55022: class B; EN61000-
4-2: 8KV air, 4KV cont .; EN61000-4-3: 10V / m; EN61000-4-4: relay 
outputs  and  power  supply  2KV,  1KV  inputs;  EN61000-4-5:  2KV 
power  mode,  1KV  difference  mode;  EN61000-4-6:  3V).  Directive 
2006/95 / CE (EN 60730-1, EN 60730-2-9). Regulation 37/2005 / CE 
(EN13485 air / air, S, A, 1, - 50 ° C + 90 ° C if used with probe model 
NTC 103AT11).

 

Содержание B4U

Страница 1: ...ONNECTION 5 FUNCTIONING 5 1 ON STAND BY FUNCTION 5 2 NORMAL ECONOMIC AND TURBO OPERATING MODES 5 3 PROBE INPUTS AND DISPLAY CONFIGURATION 5 4 DIGITAL INPUTS CONFIGURATION 5 5 CONFIGURATION OF THE OUTPUTS AND BUZZER 5 6 TEMPERATURE REGULATION 5 7 COMPRESSOR PROTECTION AND START DELAY FUNCTION 5 8 DEFROST CONTROL 5 8 1 AUTOMATIC DEFROST 5 8 2 MANUAL DEFROST 5 8 3 DEFROST END 5 8 4 INTERVAL AND DURAT...

Страница 2: ...be configured 3 DOWN AUX 2 key In normal operating mode pressing and releasing allows quick access to the Set Point selection and modification mode Pressing for 3 seconds allows activating deactivating the configured output configured as A2 anti fog heating elements In the programming and display modes of the temperature measured by the room probe the evaporator temperature P1 and P2 and in additi...

Страница 3: ...the PP parameter within the tS group To have this protection available we will program the desired password number in the PP parameter Once the protection is activated to access the parameter menu press the ON OFF LIGHT keys simultaneously for 5 seconds and the display will show rP press the LIGHT key and the display will show 0 At this point using the UP and DOWN keys we will establish the passwo...

Страница 4: ...hat instant To exit the variables display mode we will not press any of the 4 keys for approximately 10 seconds 3 WARNINGS FOR USE 3 1 PERMITTED USE The B4U has been designed as a measuring and regulating device in accordance with EN 60730 1 for operation at altitudes up to 2000m The use of the B4U in applications not expressly provided for in the aforementioned standard must include all appropria...

Страница 5: ...eople things or animals 4 2 1 ELECTRICAL WIRING DIAGRAM Color legend Cable Strip 1 Brown 2 White 3 Green 4 Blue 5 Red 6 Black 5 OPERATION 5 1 ON STAND BY FUNCTION The B4U once turned on can take 2 different conditions ON It means that it works with the normal control functions STAND BY It means that the controller does not operate with any control function and the display turns off the Stand by LE...

Страница 6: ...g the Et time it will automatically switch to ECONOMY mode The B4U remains in ECONOMY mode until the door is reopened or if configured until the tt timeout When it exits the ECONOMY mode the B4U performs a TURBO cycle to recover the temperature of the products then returns to the NORMAL operating mode and so on 1 The time Et is reset every time the door is opened In the case of the example the doo...

Страница 7: ...ATION OF THE OUTPUTS AND BUZZER The parameters related to the configuration of the outputs are contained in the group Ou The outputs of the B4U can be configured through the parameters o1 o2 o3 and o4 with the following functions ot Compressor Solenoid Control or Cooling Element dF Control of defrost heaters Fn Evaporator fans control Au Auxiliary output control En Allows the Control of a silencea...

Страница 8: ...with Heating action In this case the regulation Set point for the ot output will be SP SE SH while for the HE output it is through the Set SH The regulation differential for the ot output is the active one between d or Ed or Hd is assumed automatically by the B4U to have positive values in the cooling action while for the HE output the differential will be Hd considered with negative values during...

Страница 9: ...counts the time since the B4U was started This mode is the one currently used in refrigeration systems ct At intervals of compressor operation time The interval di is counted as the sum of the operating times of the output ot output on This mode is normally used in refrigeration systems with compressor stop in defrost cS Defrost cycle at each compressor stop The regulator starts a defrost cycle ev...

Страница 10: ...be set as EP exceeds the temperature set in parameter tE If this temperature is not reached within the time set in parameter dE the defrost will be interrupted To avoid unnecessary defrosting when the evaporator temperature is high the tS parameter allows setting the temperature referring to the evaporator probe below which the defrosts will be activated Therefore in the indicated modes if the tem...

Страница 11: ...nfigured with the o1 o2 o3 o4 parameters The buzzer can be configured to signal alarms by setting the parameter Bu 1 or 3 or 4 and always functions as an alarm that can be silenced This means that when activated it can be deactivated by briefly pressing any key Alarms can be configured to signal them by configuring the outputs The possible alarms that can be configured are the following On When yo...

Страница 12: ...e to show the initials oP on the display When the door open alarm intervenes the normally activated outputs fans or fans compressor are also deactivated 5 10 4 VOLTAGE CONTROL ALARM The parameters related to the voltage control alarm functions are found in the UA folder The B4U can automatically deactivate the control outputs when the mains voltage measured by the B4U through its power supply is l...

Страница 13: ...e SP S Parameters Relative to the Set Point 1 SH Turbo Set Point or Minimum Set point and Superheat Set point in HC mode 99 HS 4 0 2 SE Economic Set Point maximum set point LS 99 8 0 3 S1 Set Point SE SH 4 0 In i Parameters related to inputs 4 uP Measurement unit and resolution decimal point C0 C with resolution 1 F0 F with 1 resolution C1 C with 0 1 resolution F1 F with 0 1 resolution C0 F0 C1 F1...

Страница 14: ... 0 29 Ei Interval between defrosts in case of evaporator probe error oF 01 59 min 01 99 hrs 4 30 EE Defrost duration in case of evaporator probe error oF 01 59 sec 01 99 min 20 31 tS Temperature from which the defrost starts 99 9 9 9 9 10 99 C F 2 0 32 tF Temperature that forces the start of the evaporator defrost 99 9 9 9 9 10 99 C F 99 33 St Defrost start delay due to evaporator temperature oF 0...

Страница 15: ...1 2Y Temperature alarm type 2 see 1y 1 2 3 4 5 6 7 8 9 10 3 62 2H High temperature alarm setpoint 2 99 9 9 9 9 10 99 C F oF 63 2L Low temperature alarm setpoint 2 99 9 9 9 9 10 99 C F oF 64 2d 2H and 2L alarm hysteresis 0 0 9 9 30 C F 1 0 65 2t Alarm delay 2H and 2L oF 01 59 sec 01 99 min oF 66 2P Temperature alarm delay time 2 on connection oF 01 59 min 01 99 hrs 2 67 2A Action of alarms 2 on the...

Страница 16: ...ify the correct functioning of the probe it is useful to have the ohm values of the probes EP Possible anomaly in the EEPROM memory Press the SET key Turn the device off and on Err Fatal Device Memory Error Replace the device or send it in for possible repair 7 2 CLEANING It is recommended to clean the B4U only with a cloth slightly dampened with water or a non abrasive detergent and that does not...

Страница 17: ...MATE N LOK 250 removable connector Connection Display B4U Power Unit B4U 3 m MAX Through the cable with removable mini connectors Pollution degree 2 Ambient operating temperature 0 60 C Operating ambient humidity less than 95 RH non condensing Transport and storage temperature 25 60 C 8 3 FUNCTIONAL CHARACTERISTICS Temperature control ON OFF Defrost control by intervals or by temperature with elec...

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