Datacold 500 инструкция на русском

Хорошее руководство по эксплуатации

Законодательство обязывает продавца передать покупателю, вместе с товаром, руководство по эксплуатации Carrier DATACOLD 500 T/R. Отсутствие инструкции либо неправильная информация, переданная потребителю, составляют основание для рекламации в связи с несоответствием устройства с договором. В законодательстве допускается предоставлении руководства в другой, чем бумажная форме, что, в последнее время, часто используется, предоставляя графическую или электронную форму инструкции Carrier DATACOLD 500 T/R или обучающее видео для пользователей. Условием остается четкая и понятная форма.

Что такое руководство?

Слово происходит от латинского «instructio», тоесть привести в порядок. Следовательно в инструкции Carrier DATACOLD 500 T/R можно найти описание этапов поведения. Цель инструкции заключается в облегчении запуска, использования оборудования либо выполнения определенной деятельности. Инструкция является набором информации о предмете/услуге, подсказкой.

К сожалению немного пользователей находит время для чтения инструкций Carrier DATACOLD 500 T/R, и хорошая инструкция позволяет не только узнать ряд дополнительных функций приобретенного устройства, но и позволяет избежать возникновения большинства поломок.

Из чего должно состоять идеальное руководство по эксплуатации?

Прежде всего в инструкции Carrier DATACOLD 500 T/R должна находится:
— информация относительно технических данных устройства Carrier DATACOLD 500 T/R
— название производителя и год производства оборудования Carrier DATACOLD 500 T/R
— правила обслуживания, настройки и ухода за оборудованием Carrier DATACOLD 500 T/R
— знаки безопасности и сертификаты, подтверждающие соответствие стандартам

Почему мы не читаем инструкций?

Как правило из-за нехватки времени и уверенности в отдельных функциональностях приобретенных устройств. К сожалению само подсоединение и запуск Carrier DATACOLD 500 T/R это слишком мало. Инструкция заключает ряд отдельных указаний, касающихся функциональности, принципов безопасности, способов ухода (даже то, какие средства стоит использовать), возможных поломок Carrier DATACOLD 500 T/R и способов решения проблем, возникающих во время использования. И наконец то, в инструкции можно найти адресные данные сайта Carrier, в случае отсутствия эффективности предлагаемых решений. Сейчас очень большой популярностью пользуются инструкции в форме интересных анимаций или видео материалов, которое лучше, чем брошюра воспринимаются пользователем. Такой вид инструкции позволяет пользователю просмотреть весь фильм, не пропуская спецификацию и сложные технические описания Carrier DATACOLD 500 T/R, как это часто бывает в случае бумажной версии.

Почему стоит читать инструкции?

Содержание руководства

• Page 1: Carrier DATACOLD 500 T/R

  INSTALLATION AND USER’S MANUAL External and internal temperature recorders DataCOLD 500 T/R Carrier Transicold Europe – 10, Bd de l’Oise – 95031 Cergy Pontoise Cédex – France Carrier Transicold North America, 700 Olympic Drive, Ath ens, Ga. 30601 — U.S.A. Carrier Refrigeration Operation 2003 Printed in France 02-03 / 62-61138-20[…]

• Page 2: Carrier DATACOLD 500 T/R

  Page 2 62-61138-20 (0 2/03) INTRODUCTION This manual is a guideline for the installation and use of the DataCOLD 500 T/R temperature recorders. To avoid loss of warranty coverage due to incompetent installation it is most essential to follow the instructions and recommendations of this manual. DataCOLD 500 T/R recorders are developed and produced t[…]

• Page 3: Carrier DATACOLD 500 T/R

  Page 3 62-61138-20 (0 2/03) TABLE OF CONTENTS 1 GENERAL D ESCRIPTION ……………………………………………………………………………………………. …………………. 4 1.1 LCD Di splay…………………………………………………………………………………………………. ………………..[…]

• Page 4: Carrier DATACOLD 500 T/R

  1 General description The control panel of the DataCOLD 500 T/R consists of three main components: 1- LCD Display 2- Key board 3- Printer 1.1 LCD Display The display has four lines of information, s howing the following content in the operating mode: Page 4 62-61138-20 (0 2/03) Line 1: Alarm active; temperatures, status of the digital inputs  — […]

• Page 5: Carrier DATACOLD 500 T/R

  1.3 Printer The thermal printer is installed in the right side of the recorder. Due to the so called “Plug and Play concept” the printer can be retrofitted, at any time, without disconnec ting the recorder from power. For retrofit, the existing mechanism will be exchanged for a mechanism with printer. To remove the printer or the housing, press[…]

• Page 6: Carrier DATACOLD 500 T/R

  Page 6 62-61138-20 (0 2/03) Digital Inputs The digital inputs allow control and regist ration of doors (open/close) or defrost or refrigeration (on/off) or any other digital input information following the configuration of the recorder. By confi guring the parameters the interpretation of the corresponding status can be distinguished. Power supply […]

• Page 7: Carrier DATACOLD 500 T/R

  12 Core cable Tem p erature in p uts Lt. blue White White Yellow CON4 – Tem p erature in p uts Pink Lt. Blue Gre y Yellow Di g ital in p uts Gre y Pink Violet Brown Orange Violet Blue Green Brown CON3 – Di g itals in p uts Orange Blue Green Red Black Optional Mounting kit If no radio slot is available, the recorder should be mount ed with the o[…]

• Page 8: Carrier DATACOLD 500 T/R

  Page 8 62-61138-20 (0 2/03) DataCOLD T-Version The T-Version has been designed for outside mounting dire ctly on the body. Usually it is fixed under the refrigeration unit on the front side of the body, where it is easily accessible. For fixing proceed as follows: First hold the box in the desired position and mark the mounting holes . Next step is[…]

• Page 9: Carrier DATACOLD 500 T/R

  WARNING : DISCONNECT THE RECORDER FROM THE BATTERY IF THE REFRIGERATION UNIT IS NOT USED FOR MORE THAN TEN (10) DAYS. Page 9 62-61138-20 (0 2/03)[…]

• Page 10: Carrier DATACOLD 500 T/R

  — Display background lighting (preferable for the R-Version) Usually the display background light switches on after pr essing any key and switching off automatically after 30 seconds. When a permanent background light is required while driving connect pin 3 to a vehicle ignition +signal. WARNING : NEVER CONNECT DIRECT TO THE BATTERY. — Alarm output[…]

• Page 11: Carrier DATACOLD 500 T/R

  Page 11 62-61138-20 ( 02/03)  Changing the language 1. Press the green key and select menu 3.4 with ↑ , ↓ . 2. Press again the green key to edit (enter) the menu 3.4. 3. Select the desired language with < …> and validate with the green key. 4. Press the red key to return to the normal display.  Programming the vehicle ID No. and t[…]

• Page 12: Carrier DATACOLD 500 T/R

  Page 12 62-61138-20 ( 02/03) 3 User menu’s DataCold 500 T/R have four different user menu’s, which are directly accessible via the keyboard: 1. Print menu 2. Alarm menu 3. User settings menu 4. Status menu 3.1 Print menu Press Blue button. The last selected print choice will be displayed. Printing starts after 2 seconds. Repeatedly pressing […]

• Page 13: Carrier DATACOLD 500 T/R

  Page 13 62-61138-20 ( 02/03) ‘Print time period’ is set to “0 hour“ only the ‘Day start time’ is applicable.[…]

• Page 14: Carrier DATACOLD 500 T/R

  Page 14 62-61138-20 ( 02/03) 3.1.7 Day start time A print out starts from the actual time and goes backwards until the time set in this parameter, unless the ‘Print time period’ is shorter. If the ‘Day start time’ is set to “00:00” only the ‘Print period time’ is applicable. This allows you to print back to a maximum of 24 hours. 1.[…]

• Page 15: Carrier DATACOLD 500 T/R

  3.3 User settings With the user settings several adjustments can be done to offer the user a maximum of user convenience. By pressing the green button the user setting menu will be activated. Toggle with [ ↑ ], [ ↓ ] between the available menu’s (3.1; 3.2; 3.3; …). Between ‘(..)’ the actual setting is disp layed. With [edit] you enter t[…]

• Page 16: Carrier DATACOLD 500 T/R

  < > accept <-cncl 3.3.6 Display back light setting Set the intensity of the back light to your convenience. The light switches on when you press any button and switches off after 30 seconds. 3.5 Display back light setting < > accept <-cncl 3.3.7 Keyboard back light setting Set the intensity of the back light to your convenience. T[…]

• Page 17: Carrier DATACOLD 500 T/R

  Page 17 62-61138-20 ( 02/03) The display scrolls the compartments which ar e activated in menu 7 (Compartment settings). Remarks: If there is a communication problem with the serial port of the refrigeration unit or if the refrigeration unit is switched off, the message “Unit connection lost” is displayed. If the refrigeration unit is switched […]

• Page 18: Carrier DATACOLD 500 T/R

  Page 18 62-61138-20 ( 02/03) T3 Input >on/off. Menu structure as 5.1 T4 Input >on/off. Menu structure as 5.1[…]

• Page 19: Carrier DATACOLD 500 T/R

  Page 19 62-61138-20 ( 02/03) Menu 6 : Digital inputs settings 4 inputs for status recording, any input can be switched on/off, assigned with a name and a polarity. A number of names are available as a factory setting, to be selected from a list. In the operating mode you can see on the display which i nputs are activated. An empty small box indicat[…]

• Page 20: Carrier DATACOLD 500 T/R

  Page 20 62-61138-20 ( 02/03) Menu 8 : Alarm settings 4 Alarm groups– each with a name to assign, upper- and lower temperature limit and a delay time. Each enabled alarm type can be activated by the user for any compartment, although per compartment only one alarm group can be set at the same time. 8.1 Alarm group 1 >on/off 8.1.1 Name >Froze[…]

• Page 21: Carrier DATACOLD 500 T/R

  Page 21 62-61138-20 ( 02/03) Menu 10 : General settings General settings for identifying the unit. 10.1 Temperature units >C The units that temperatures will be disp layed. Either degrees C, or degrees F. 10.2 Sample rate >10 minutes The interval time in Minutes (1, 2, 3,..,15, 20, 25, 30,.., 60 minutes) for storing a temperature measurement […]

• Page 22: Carrier DATACOLD 500 T/R

  Page 22 62-61138-20 ( 02/03) 11.2 COM2 RS-232 port setting Refer to Enclosure E: wiring diagrams to connect the CO M2 RS-232 port of the recorder to the micro of the refrigeration unit. • No protocol. • Third party: light protocol to extrac t part of the data from the recorder. • TMS protocol (9,600 Baud): current protocol to extract all data[…]

• Page 23: Carrier DATACOLD 500 T/R

  Page 23 62-61138-20 ( 02/03) 5 Accessories and spare parts ITEM PART NUMBER DESIGNATION NS 12-00585-50 Connection Infra-Red cable for PC 1. 12-00585-51 Aluminium guard for sensor NS 12-00585-52 Handheld probe 16’ ( 5 M ) cable & junction box NS 12-00585-53 Magnetic Door Switch (rear door) NS 12-00585-54 Magnetic Door Switch (side door) 2. 12-[…]

• Page 24: Carrier DATACOLD 500 T/R

  Page 24 62-61138-20 ( 02/03)[…]

• Page 25: Carrier DATACOLD 500 T/R

  Page 25 62-61138-20 ( 02/03) Enclosure A Technical data a) Technical specification: • Operating voltage : 10-36 Volts DC, prot ected against alternator load shedding. • Power consumption: Nominal 0. 6W, max. 25W (while printing) • Temperature : -22°F to +158°F (-30°C / +70°C) be in operation, -40°F to +185°F (-40°C / +85°C) while in s[…]

• Page 26: Carrier DATACOLD 500 T/R

  Enclosure B Replace paper roll If a coloured line appears on the last meter of paper , the paper roll needs to be replaced as follow : 1- Push lock lightly upwards and pull the printer module carefully forward. 2- Open the upper part of the front panel. 3- Insert a new paper roll on the spindle. 4- Place the printer module carefully back into the r[…]

• Page 27: Carrier DATACOLD 500 T/R

  Page 27 62-61138-20 ( 02/03) Enclosure C Factory settings 5. Temperature inputs Factory setting 5.1. T1 input On 5.1.1. Type Temperature 5.1.2. Name Return Air 5.2. T2 input On 5.2.1. Type Temperature 5.2.2. Name Rear 5.3. T3 input Off 5.4. T4 input Off 6. Digital Inputs 6.1. D1 Input Off, Refrigeration 6.2. D2 Input Off, Back door 6.3. D3 Input Of[…]

• Page 28: Carrier DATACOLD 500 T/R

  Enclosure D Failure codes & Set correction factor procedure If the display shows one of the following values: OC (I) the input is activat ed but no sensor is connected. (ii) the sensor has an open circui t (sensor or wire failure.) SC (I) the sensor has a shor t (sensor or cable failure.) Procedure to set a Correction factor The DataCOLD 500 R/[…]

• Page 29: Carrier DATACOLD 500 T/R

  Enclosure E Wiring diagrams CONNECTOR 1 POWER SUPPLY & DIGITAL OUTPUTS 1 = POWER SUPPLY (+) 2 = POWER NEGATIVE (-) 3 = DISPLAY BACKLIGHT (+) 4 = ALARM O/P TEMP 5 = ALARM O/P DIGIT battery Ignition key (+) (display backlight) WARN ING : NEVER CONNECT DISPLA Y BA CKLIGHT DIRECTLY TO THE BATTERY CONNECTOR 3 DIGITAL INPUTS (configuration example) 1[…]

• Page 30: Carrier DATACOLD 500 T/R

  CONNECTOR 2 RS232 a) Serial communication w ith micro of th e refrigeration unit without control panel 1 = GND 2 = RXD 3 = TXD 4 = CTS 5 = RTS Communication cable 3 way P/N : 22-60633-00 Unit microprocessor connector DataCOLD 500 b) Serial communication w ith micro of the refr igeration unit with one control panel and “Y” communication cable 1 […]

• Carrier DATACOLD 500 T/R — page 1

  INSTALLATION AND USER’S MANUAL External and internal temperature recorders DataCOLD 500 T/R Carrier Transicold Europe – 10, Bd de l’Oise – 95031 Cergy Pontoise Cédex – France Carrier Transicold North America, 700 Olympic Drive, Ath ens, Ga. 30601 — U.S.A. Carrier Refrigeration Operation 2003 Printed in France 02-03 / 62-61138-20 …

• Carrier DATACOLD 500 T/R — page 2

  Page 2 62-61138-20 (0 2/03) INTRODUCTION This manual is a guideline for the installation and use of the DataCOLD 500 T/R temperature recorders. To avoid loss of warranty coverage due to incompetent installation it is most essential to follow the instructions and recommendations of this manual. DataCOLD 500 T/R recorders are developed and produced t …

• Carrier DATACOLD 500 T/R — page 3

  Page 3 62-61138-20 (0 2/03) TABLE OF CONTENTS 1 GENERAL D ESCRIPTION ……………………………………………………………………………………………. …………………. 4 1.1 LCD Di splay…………………………………………………………………………………………………. ……………….. …

• Carrier DATACOLD 500 T/R — page 4

  1 General description The control panel of the DataCOLD 500 T/R consists of three main components: 1- LCD Display 2- Key board 3- Printer 1.1 LCD Display The display has four lines of information, s howing the following content in the operating mode: Page 4 62-61138-20 (0 2/03) Line 1: Alarm active; temperatures, status of the digital inputs  — …

• Carrier DATACOLD 500 T/R — page 5

  1.3 Printer The thermal printer is installed in the right side of the recorder. Due to the so called “Plug and Play concept” the printer can be retrofitted, at any time, without disconnec ting the recorder from power. For retrofit, the existing mechanism will be exchanged for a mechanism with printer. To remove the printer or the housing, press …

• Carrier DATACOLD 500 T/R — page 6

  Page 6 62-61138-20 (0 2/03) Digital Inputs The digital inputs allow control and regist ration of doors (open/close) or defrost or refrigeration (on/off) or any other digital input information following the configuration of the recorder. By confi guring the parameters the interpretation of the corresponding status can be distinguished. Power supply …

• Carrier DATACOLD 500 T/R — page 7

  12 Core cable Tem p erature in p uts Lt. blue White White Yellow CON4 – Tem p erature in p uts Pink Lt. Blue Gre y Yellow Di g ital in p uts Gre y Pink Violet Brown Orange Violet Blue Green Brown CON3 – Di g itals in p uts Orange Blue Green Red Black Optional Mounting kit If no radio slot is available, the recorder should be mount ed with the o …

• Carrier DATACOLD 500 T/R — page 8

  Page 8 62-61138-20 (0 2/03) DataCOLD T-Version The T-Version has been designed for outside mounting dire ctly on the body. Usually it is fixed under the refrigeration unit on the front side of the body, where it is easily accessible. For fixing proceed as follows: First hold the box in the desired position and mark the mounting holes . Next step is …

• Carrier DATACOLD 500 T/R — page 9

  WARNING : DISCONNECT THE RECORDER FROM THE BATTERY IF THE REFRIGERATION UNIT IS NOT USED FOR MORE THAN TEN (10) DAYS. Page 9 62-61138-20 (0 2/03) …

• Carrier DATACOLD 500 T/R — page 10

  — Display background lighting (preferable for the R-Version) Usually the display background light switches on after pr essing any key and switching off automatically after 30 seconds. When a permanent background light is required while driving connect pin 3 to a vehicle ignition +signal. WARNING : NEVER CONNECT DIRECT TO THE BATTERY. — Alarm output …

• Carrier DATACOLD 500 T/R — page 11

  Page 11 62-61138-20 ( 02/03)  Changing the language 1. Press the green key and select menu 3.4 with ↑ , ↓ . 2. Press again the green key to edit (enter) the menu 3.4. 3. Select the desired language with < …> and validate with the green key. 4. Press the red key to return to the normal display.  Programming the vehicle ID No. and t …

• Carrier DATACOLD 500 T/R — page 12

  Page 12 62-61138-20 ( 02/03) 3 User menu’s DataCold 500 T/R have four different user menu’s, which are directly accessible via the keyboard: 1. Print menu 2. Alarm menu 3. User settings menu 4. Status menu 3.1 Print menu Press Blue button. The last selected print choice will be displayed. Printing starts after 2 seconds. Repeatedly pressing …

• Carrier DATACOLD 500 T/R — page 13

  Page 13 62-61138-20 ( 02/03) ‘Print time period’ is set to “0 hour“ only the ‘Day start time’ is applicable. …

• Carrier DATACOLD 500 T/R — page 14

  Page 14 62-61138-20 ( 02/03) 3.1.7 Day start time A print out starts from the actual time and goes backwards until the time set in this parameter, unless the ‘Print time period’ is shorter. If the ‘Day start time’ is set to “00:00” only the ‘Print period time’ is applicable. This allows you to print back to a maximum of 24 hours. 1. …

• Carrier DATACOLD 500 T/R — page 15

  3.3 User settings With the user settings several adjustments can be done to offer the user a maximum of user convenience. By pressing the green button the user setting menu will be activated. Toggle with [ ↑ ], [ ↓ ] between the available menu’s (3.1; 3.2; 3.3; …). Between ‘(..)’ the actual setting is disp layed. With [edit] you enter t …

• Carrier DATACOLD 500 T/R — page 16

  < > accept <-cncl 3.3.6 Display back light setting Set the intensity of the back light to your convenience. The light switches on when you press any button and switches off after 30 seconds. 3.5 Display back light setting < > accept <-cncl 3.3.7 Keyboard back light setting Set the intensity of the back light to your convenience. T …

• Carrier DATACOLD 500 T/R — page 17

  Page 17 62-61138-20 ( 02/03) The display scrolls the compartments which ar e activated in menu 7 (Compartment settings). Remarks: If there is a communication problem with the serial port of the refrigeration unit or if the refrigeration unit is switched off, the message “Unit connection lost” is displayed. If the refrigeration unit is switched …

• Carrier DATACOLD 500 T/R — page 18

  Page 18 62-61138-20 ( 02/03) T3 Input >on/off. Menu structure as 5.1 T4 Input >on/off. Menu structure as 5.1 …

• Carrier DATACOLD 500 T/R — page 19

  Page 19 62-61138-20 ( 02/03) Menu 6 : Digital inputs settings 4 inputs for status recording, any input can be switched on/off, assigned with a name and a polarity. A number of names are available as a factory setting, to be selected from a list. In the operating mode you can see on the display which i nputs are activated. An empty small box indicat …

• Carrier DATACOLD 500 T/R — page 20

  Page 20 62-61138-20 ( 02/03) Menu 8 : Alarm settings 4 Alarm groups– each with a name to assign, upper- and lower temperature limit and a delay time. Each enabled alarm type can be activated by the user for any compartment, although per compartment only one alarm group can be set at the same time. 8.1 Alarm group 1 >on/off 8.1.1 Name >Froze …

• Carrier DATACOLD 500 T/R — page 21

  Page 21 62-61138-20 ( 02/03) Menu 10 : General settings General settings for identifying the unit. 10.1 Temperature units >C The units that temperatures will be disp layed. Either degrees C, or degrees F. 10.2 Sample rate >10 minutes The interval time in Minutes (1, 2, 3,..,15, 20, 25, 30,.., 60 minutes) for storing a temperature measurement …

• Carrier DATACOLD 500 T/R — page 22

  Page 22 62-61138-20 ( 02/03) 11.2 COM2 RS-232 port setting Refer to Enclosure E: wiring diagrams to connect the CO M2 RS-232 port of the recorder to the micro of the refrigeration unit. • No protocol. • Third party: light protocol to extrac t part of the data from the recorder. • TMS protocol (9,600 Baud): current protocol to extract all data …

• Carrier DATACOLD 500 T/R — page 23

  Page 23 62-61138-20 ( 02/03) 5 Accessories and spare parts ITEM PART NUMBER DESIGNATION NS 12-00585-50 Connection Infra-Red cable for PC 1. 12-00585-51 Aluminium guard for sensor NS 12-00585-52 Handheld probe 16’ ( 5 M ) cable & junction box NS 12-00585-53 Magnetic Door Switch (rear door) NS 12-00585-54 Magnetic Door Switch (side door) 2. 12- …

• Carrier DATACOLD 500 T/R — page 24

  Page 24 62-61138-20 ( 02/03) …

• Carrier DATACOLD 500 T/R — page 25

  Page 25 62-61138-20 ( 02/03) Enclosure A Technical data a) Technical specification: • Operating voltage : 10-36 Volts DC, prot ected against alternator load shedding. • Power consumption: Nominal 0. 6W, max. 25W (while printing) • Temperature : -22°F to +158°F (-30°C / +70°C) be in operation, -40°F to +185°F (-40°C / +85°C) while in s …

• Carrier DATACOLD 500 T/R — page 26

  Enclosure B Replace paper roll If a coloured line appears on the last meter of paper , the paper roll needs to be replaced as follow : 1- Push lock lightly upwards and pull the printer module carefully forward. 2- Open the upper part of the front panel. 3- Insert a new paper roll on the spindle. 4- Place the printer module carefully back into the r …

• Carrier DATACOLD 500 T/R — page 27

  Page 27 62-61138-20 ( 02/03) Enclosure C Factory settings 5. Temperature inputs Factory setting 5.1. T1 input On 5.1.1. Type Temperature 5.1.2. Name Return Air 5.2. T2 input On 5.2.1. Type Temperature 5.2.2. Name Rear 5.3. T3 input Off 5.4. T4 input Off 6. Digital Inputs 6.1. D1 Input Off, Refrigeration 6.2. D2 Input Off, Back door 6.3. D3 Input Of …

• Carrier DATACOLD 500 T/R — page 28

  Enclosure D Failure codes & Set correction factor procedure If the display shows one of the following values: OC (I) the input is activat ed but no sensor is connected. (ii) the sensor has an open circui t (sensor or wire failure.) SC (I) the sensor has a shor t (sensor or cable failure.) Procedure to set a Correction factor The DataCOLD 500 R/ …

• Carrier DATACOLD 500 T/R — page 29

  Enclosure E Wiring diagrams CONNECTOR 1 POWER SUPPLY & DIGITAL OUTPUTS 1 = POWER SUPPLY (+) 2 = POWER NEGATIVE (-) 3 = DISPLAY BACKLIGHT (+) 4 = ALARM O/P TEMP 5 = ALARM O/P DIGIT battery Ignition key (+) (display backlight) WARN ING : NEVER CONNECT DISPLA Y BA CKLIGHT DIRECTLY TO THE BATTERY CONNECTOR 3 DIGITAL INPUTS (configuration example) 1 …

• Carrier DATACOLD 500 T/R — page 30

  CONNECTOR 2 RS232 a) Serial communication w ith micro of th e refrigeration unit without control panel 1 = GND 2 = RXD 3 = TXD 4 = CTS 5 = RTS Communication cable 3 way P/N : 22-60633-00 Unit microprocessor connector DataCOLD 500 b) Serial communication w ith micro of the refr igeration unit with one control panel and “Y” communication cable 1 …