EC 6-708 Digital controller for refrigerating power plant management Operating instructions ENGLISH File ec6708_eng_v1.01.pdf IMPORTANT: The use of this new instrument is easy; but for safety reasons, it is important read these instructions carefully before the installation or before the use and follow all additional informations. It is very important keep these instructions with the instrument for future consultations.
INDEX Summary SUMMARY User Menu configuration parameters page 32 Configuration parameters and default values 2 Index page 2 summarizing table page 40 Summary page 2 Configurator Menu configuration parameters page 40 Operator Menu configuration parameters page 40 General informations page 3 User Menu configuration parameters page 42 What is the use page 3 Signals and alarms page 45 Getting started page 4 Signals page 45 Installation page 4 Alarms page 46 Electrica
GENERAL INFORMATIONS What is the use WHAT IS THE USE EC 6-708 is a digital controller studied for refrigerating power plant management up to eight compressors/condenser fans which basic characteristics are the setting of the user to associate to every relay output (condenser fans, compressor or choking valve), to subject the compressors activation to the compressors powers and to the compressors total working hours, to read and to control the suction probe and the condensing quantity (pressure/temperature)
GETTING STARTED Installation - Electrical connection INSTALLATION EC 6-708 was studied for DIN EN 50022 standard rail installation according with DIN 43880 norms (see the chapter Dimensional data and installation on the page 50). Additional informations • verify if the using conditions (ambient temperature, humidity, etc.
INSTRUMENT DESCRIPTION Terminal blocks - Keys TERMINAL BLOCKS 1 25 screw terminal block for cables up to 2.5 mm² (0.38 in.²) for the screw terminal block for cables up to 2.5 mm² (0.38 in.²) for the connection connection • • to the condenser fans safety digital input • to the upper condensing quantity digital input • to the lower pressure digital input KEYS • to the measure inputs 3 management). menu key • 2 screw terminal block for cables up to 2.5 mm² (0.38 in.
INSTRUMENT DESCRIPTION Keys - LED - Displays tion parameter value quantity is the Celsius degree or that the displayed quantity is a temperature 5 up key • ; it permits during the manual power steps loading/unloading procedure, to load a power step • • • ; it indicates if it flashes, that a data transmission in a serial network with during the working setpoint setting procedure, to increase the EVCOBUS protocol communication managed by a master (for working setpoint value instance a Personal C
INSTRUMENT DESCRIPTION Displays setpoint value • during the configurator, operator and User Menu configuration parameters setting procedure a configuration parameter label • during the configurator, operator and User Menu configuration parameters setting procedure a configuration parameter value. Every Control S.r.l. Via Mezzaterra 6, 32036 Sedico Belluno ITALY • Phone 0039-0437-852468 (a.r.) • Fax 0039-0437-83648 • info@everycontrol.it • www.everycontrol.
BEFORE THE USE Settings to execute before the use SETTINGS TO EXECUTE BEFORE THE USE /b6 and /b7 establish the lower and the upper end of scale for To adjust the instrument to the power plant characteristics, it is impor- 4-20 mA input of the condensing transducer) tant to execute some settings before the use: a) after supplied the instrument verify if the instrument is in the j) if the condensing probe is a PTC probe set the parameter / t status STAND-BY (during the status STAND-BY the display and
FUNCTIONING Preliminary informations - Suction pressure regulation PRELIMINARY INFORMATIONS SUCTION PRESSURE REGULATION After derived the connections (see the chapter Electrical connection on Suction pressure regulation happens through the compressors. the page 51), the instrument reproposes the last setting stored.
FUNCTIONING Suction pressure regulation - Compressors protection or deactivate according with the protections, the powers and the working hours of the compressors. Speaking of suction pressure regulation • the parameter Hr 1 ... 8 permits to display the total working hours of the user associated to the output K1 ... 8 • the parameter tyP1 ... 8 establishes the user to associate to the output K1 ... 8 • the parameter Po 1 ...
FUNCTIONING Compressors protection - Users total working hours counter cleaning - Manual power steps loading/unloading Speaking of compressors protection • the parameter C 0 establishes the time that disables the compressor activation from the moment in which the instrument gets supplied • the parameter C 1 establishes the time that disables the compressor activation from the moment of the previous compressor activation • the parameter C 2 establishes the time that disables the compressor activation f
FUNCTIONING Manual power steps loading/unloading - Condensing quantity regulation condenser fans, for instance 4, it activates the condenser fans with sequence every time the quantity read by the condensing probe rises above the condenser fans activation setpoint of a fraction of proportional band and it deactivates them with sequence when the quantity read by the condensing probe falls below the value to which the activation happened of a fraction of proportional band) ...
FUNCTIONING Condensing quantity regulation - Analog output - Digital inputs • hours of the user associated to the output K1 ... 8 analog output signal is proportional to the number of condenser fans the parameter tyP1 ... 8 establishes the user to associate to the activated on the number of relay outputs associated to the condenser output K1 ... 8 fans, for instance 4). the parameters Hr 1 ... 8 and tyP1 ...
FUNCTIONING Digital inputs - Lower pressure alarm Activating the lower pressure digital input the instrument activates the lower pressure digital input alarm (see the paragraph Alarms on the page 46) and it increases a lower pressure alarms counter as long as the number of lower pressure alarms enough to give the instrument locking gets reached (the increasing of the lower pressure alarms counter gets given also by the lower pressure alarm activation; see the paragraph Lower pressure alarm on the page 14);
FUNCTIONING Lower pressure alarm - Upper pressure alarm - Upper condensing quantity alarm • pressure digital input ... or upper pressure alarm relative to the working setpoint (in this case the parameter AA0 establishes the hysteresis (differential) rela- the instrument activates the upper pressure alarm when the pressure tive to the alarm setpoint read by the suction probe rises above the working setpoint of the • the parameter AA1 establishes the alarm setpoint value alarm setpoint value).
FUNCTIONING Upper condensing quantity alarm upper condensing quantity alarms counter as long as the number of upper condensing quantity alarms enough to give the instrument locking gets reached (the increasing of the upper condensing quantity alarms counter gets given also by the upper condensing quantity digital input activation; see the paragraph Digital inputs on the page 13); to unlock the instrument turn off and turn on again the instrument.
FUNCTIONING Notes Every Control S.r.l. Via Mezzaterra 6, 32036 Sedico Belluno ITALY • Phone 0039-0437-852468 (a.r.) • Fax 0039-0437-83648 • info@everycontrol.it • www.everycontrol.
FUNCTIONING Summarizing flowchart 18 Every Control S.r.l. Via Mezzaterra 6, 32036 Sedico Belluno ITALY • Phone 0039-0437-852468 (a.r.) • Fax 0039-0437-83648 • info@everycontrol.it • www.everycontrol.
FUNCTIONING Summarizing flowchart Every Control S.r.l. Via Mezzaterra 6, 32036 Sedico Belluno ITALY • Phone 0039-0437-852468 (a.r.) • Fax 0039-0437-83648 • info@everycontrol.it • www.everycontrol.
FUNCTIONING Summarizing flowchart 20 Every Control S.r.l. Via Mezzaterra 6, 32036 Sedico Belluno ITALY • Phone 0039-0437-852468 (a.r.) • Fax 0039-0437-83648 • info@everycontrol.it • www.everycontrol.
FUNCTIONING Summarizing flowchart Every Control S.r.l. Via Mezzaterra 6, 32036 Sedico Belluno ITALY • Phone 0039-0437-852468 (a.r.) • Fax 0039-0437-83648 • info@everycontrol.it • www.everycontrol.
FUNCTIONING Summarizing flowchart 22 Every Control S.r.l. Via Mezzaterra 6, 32036 Sedico Belluno ITALY • Phone 0039-0437-852468 (a.r.) • Fax 0039-0437-83648 • info@everycontrol.it • www.everycontrol.
FUNCTIONING Summarizing flowchart Every Control S.r.l. Via Mezzaterra 6, 32036 Sedico Belluno ITALY • Phone 0039-0437-852468 (a.r.) • Fax 0039-0437-83648 • info@everycontrol.it • www.everycontrol.
WORKING SETPOINT Working setpoint setting (working suction pressure) - Working setpoint WORKING SETPOINT SETTING (WORKING SUCTION PRES- the parameter /5P and from the parameters /A6 and /A7 (the SURE) parameters /5P, /A6 and /A7 belong to the User Menu; see the To modify the working setpoint value: chapter User Menu on the page 32). a) push and release the set key (to the release of the set key the instrument displays the actual value, for instance 0.
CONFIGURATOR MENU Configuration parameters setting CONFIGURATION PARAMETERS SETTING e) after the display push and release the set key (to the release of Configurator Menu configuration parameters are arranged on two the set key the instrument displays the label Hr 7 again. levels, to protect the most tricky settings against undesirable violations and they are arranged in families that can be recognized through the initial letter of the label.
CONFIGURATOR MENU Configuration parameters setting - Configurator Menu configuration parameters the first parameter of the second level). To turn out from the Configurator Menu configuration parameters To select a parameter of the second level: j) repeat the passage c as long as the instrument displays the setting procedure: n) keep pushed for two seconds at least the menu key or the ON label of the desired parameter, for instance Po 1.
CONFIGURATOR MENU Configurator Menu configuration parameters Hr 8 ---- ---- hour ciated to the output K7 (1) tyP3 undF CHo ---- user to associate to the output K3 total working hours of the user asso- tyP4 undF CHo ---- user to associate to the output K4 ciated to the output K8 (1) tyP5 undF CHo ---- user to associate to the output K5 Notes tyP6 undF CHo ---- user to associate to the output K6 • the symbol (1) indicates that the parameter is available both to tyP7 undF CHo
CONFIGURATOR MENU Configurator Menu configuration parameters if the power of the compressor associated to the output K1 is 4 HP and the power of the compressor associated to the output K2 is 1 HP, set the parameter Po 1 to 8 and the parameter Po 2 to 2. Po 2 power of the compressor associated to the output K2 It has the same significance of the parameter Po 1. Po 3 power of the compressor associated to the output K3 It has the same significance of the parameter Po 1.
OPERATOR MENU Configuration parameters setting - Operator Menu configuration parameters CONFIGURATION PARAMETERS SETTING To select a parameter of the second level: Operator Menu configuration parameters are arranged on two lev- h) repeat the passage c of the chapter Configurator Menu on els, to protect the most tricky settings against undesirable violations and the page 25 as long as the instrument displays the label of the they are arranged in families that can be recognized through the initial des
OPERATOR MENU Operator Menu configuration parameters St 2 status of the user associated to the output K2 associated to the output K8 It has the same significance of the parameter St 1. St 3 status of the user associated to the output K3 t r1 St 4 status of the user associated to the output K4 running working hours of the user associated to the output K1 It has the same significance of the parameter St 1.
OPERATOR MENU Operator Menu configuration parameters condensing probe is a PTC probe the unit of measure depends from the parameter / t (the parameter / t belongs to the User Menu; see the chapter User Menu on the page 32) • the symbol (5) indicates that during the status ON the parameter is available both to the first and to the second level. Pb r suction probe reading It permits to display the pressure read by the suction probe.
USER MENU Configuration parameters setting - User Menu configuration parameters CONFIGURATION PARAMETERS SETTING User Menu configuration parameters are arranged on two levels, to protect the most tricky settings against undesirable violations and they are arranged in families that can be recognized through the initial letter of the label.
USER MENU User Menu configuration parameters we have provided to divided it in families. Menu; see the chapter User Menu on the page 32), if the condensing probe is a PTC probe the unit of measure depends LABEL MIN. MAX. U.M. USER MENU PASSWORD from the parameter / t (the parameter / t belongs to the User PA 9999 ---- User Menu password (2) Menu; see the chapter User Menu on the page 32).
USER MENU User Menu configuration parameters /A7 upper end of scale for 4-20 mA input (it coincides chapter User Menu on the page 32). with the maximum calibration value of the suction transducer) r0 It establishes the “neutral zone” value. coincide with the maximum calibration value of the suction transducer. For further informations about the parameter r 0 meaning see the /b6 lower end of scale for 4-20 mA input (it coincides paragraph Suction pressure regulation on the page 9.
USER MENU User Menu configuration parameters the previous activation power steps). For further informations about the parameter r A meaning see the It establishes the time that disables the compressor activation from the paragraph Suction pressure regulation on the page 9. moment of the previous compressor activation.
USER MENU User Menu configuration parameters the unit of measure depends from the parameters /5P, /b6 loading gives the automatic activation/deactivation of and /b7 (the parameters /5P, /b6 and /b7 belong to the User a condenser fans). Menu; see the chapter User Menu on the page 32), if the For further informations about the parameter F A meaning see the condensing probe is a PTC probe the unit of measure depends paragraph Condensing quantity regulation on the page 12.
USER MENU User Menu configuration parameters output K1 ... 8 locking digital inputs, as indicated: 0 = NO contact 1 = NC contact. chapter User Menu on the page 32). AA0 hysteresis (differential) The parameters tyP1 ... 8 belong to the Configurator Menu; see the It is significant exclusively if the parameter AA4 has value 1 or 2, it chapter Configurator Menu on the page 25.
USER MENU User Menu configuration parameters Notes • ACn 0 15 ---- the symbol (3) indicates that the unit of measure depends from number of upper condensing quantity alarms enough to give the instru- the parameter /5P and from the parameters /A6 and /A7 (the ment locking parameters /5P, /A6 and /A7 belong to the User Menu; see the Notes chapter User Menu on the page 32).
USER MENU User Menu configuration parameters It establishes the number of upper condensing quantity alarms enough 1 = 2,400 baud to give the instrument locking. 2 = 4,800 baud If the parameter ACn has value 0 the instrument locking never hap- 3 = 9,600 baud. pens. The increasing of the upper condensing quantity alarms counter gets LABEL MIN. MAX. U.M. given also by the upper condensing quantity digital input activation.
CONFIGURATION PARAMETERS AND DEFAULT VALUES SUMMARIZING TABLE Configurator Menu configuration parameters - Operator Menu configuration parameters CONFIGURATOR MENU CONFIGURATION PARAMETERS LABEL MIN. MAX. U.M. DEF.
CONFIGURATION PARAMETERS AND DEFAULT VALUES SUMMARIZING TABLE Operator Menu configuration parameters LABEL MIN. MAX. U.M. DEF.
CONFIGURATION PARAMETERS AND DEFAULT VALUES SUMMARIZING TABLE Operator Menu configuration parameters - User Menu configuration parameters • the symbol (4) indicates that the unit of measure depends from the parameter /bE (the parameter /bE belongs to the User Menu; see the chapter User Menu on the page 32): if the condensing probe is a 2 wires 4-20 mA pressure transducer the unit of measure depends from the parameters /5P, /b6 and /b7 (the parameters /5P, /b6 and /b7 belong to the User Menu; see the chapt
CONFIGURATION PARAMETERS AND DEFAULT VALUES SUMMARIZING TABLE User Menu configuration parameters LABEL MIN. MAX. U.M. DEF. CONDENSER FANS REGULATOR proportional band (1) F0 0.001 255 (4) 2.00 F1 F6 F7 (4) 12.00 condenser fans activation setpoint (1) F6 -999 9999 (4) 0.00 F7 -999 9999 (4) 30.
CONFIGURATION PARAMETERS AND DEFAULT VALUES SUMMARIZING TABLE User Menu configuration parameters PPP -999 9999 ---- -19 Operator Menu password value Notes • the symbol (1) indicates that the parameter is available both to the first and to the second level • the symbol (2) indicates that the parameter is available to the first level only • the symbol (3) indicates that the unit of measure depends from the parameter /5P and from the parameters /A6 and /A7 (the parameters / 5P, /A6 and /A7 belong t
SIGNALS AND ALARMS Signals SIGNALS If the minutes LED is turned on it means that the unit of measure of the displayed quantity is the minute. If the compressor/choking valve associated to the output K1 ... 8 LED is turned on it means that the user associated to the output K1 ... 8 is a compressor or a choking valve. If the hours LED is turned on it means that the unit of measure of the displayed quantity is the hour. If the compressor/choking valve associated to the output K1 ...
SIGNALS AND ALARMS Signals - Alarms means that • there was a number of lower pressure alarms enough to give the instrument locking and, if the indication is flashing, that the pressure read by the suction probe is below the alarm setpoint again (turn off and turn on again the instrument, see the parameters AA0, AA1, AA4, AAn and i8P: the parameters AA0, AA1, AA4, AAn and i8P belong to the User Menu; see the chapter User Menu on the page 32).
SIGNALS AND ALARMS Alarms failure alarm) it means that • the kind of connected suction probe is not proper (verify the kind of connected suction probe) • the suction probe is faulty (verify the suction probe integrity) • there is a mistake in the instrument-suction probe connection (verify the instrument-suction probe integrity) • the pressure read by the suction probe is outside the limits permitted by the suction probe in use (verify that the pressure If the instrument displays the indication “AL
SIGNALS AND ALARMS Alarms ter User Menu on the page 32). During this alarm the user associated to the output K1 ... 8 gets forced During this alarm all power steps get unloaded, the output Al1 gets deactivated and the output Al2 gets activated. to the status OFF and the output Al2 gets activated.
SIGNALS AND ALARMS Alarms User Menu on the page 32). Inactive. During this alarm the output Al1 gets deactivated and the output Al2 To clear the users total working hours counter see the paragraph gets activated. Users total working hours counter cleaning on the page 11.
DIMENSIONAL DATA AND INSTALLATION Overall dimensions - Installation OVERALL DIMENSIONS The dimensions are expressed in millimetres and inches (half-scale drawing). INSTALLATION The fixing system suggested by the builder is on DIN EN 50022 standard rail according with DIN 43880 norms (half-scale drawing). 50 Every Control S.r.l. Via Mezzaterra 6, 32036 Sedico Belluno ITALY • Phone 0039-0437-852468 (a.r.) • Fax 0039-0437-83648 • info@everycontrol.it • www.everycontrol.
ELECTRICAL CONNECTION Connections to derive CONNECTIONS TO DERIVE Instance of typical application. Every Control S.r.l. Via Mezzaterra 6, 32036 Sedico Belluno ITALY • Phone 0039-0437-852468 (a.r.) • Fax 0039-0437-83648 • info@everycontrol.it • www.everycontrol.
TECHNICAL DATA Technical data - How to order TECHNICAL DATA Working range Configurable. Case Plastic grey (PPO), self-extinguishing. Setting range All the working range. Size 160 x 90 x 58 mm (6.29 x 3.54 x 2.28 in., 9 DIN modules). Resolution Configurable. Installation On DIN EN 50022 standard rail installation according with DIN 43880 Display norms. 4-digit display 12.5 (0.49 in.
CONVERSION FACTORS Temperature - Pressure TEMPERATURE TO CONVERT INTO MULTIPLY BY Celsius Fahrenheit F = [(C x 9) / 5] + 32 Celsius Kelvin K = C + 273.15 Celsius Rankine R = [(C + 273.15) x 9] / 5 Fahrenheit Celsius C = [5 x (F - 32)] / 9 Kelvin Celsius C = K - 273.15 Rankine Celsius C = [(R x 5) / 9] - 273.15 Fahrenheit Kelvin K = [5 x (F + 459.67)] / 9 Fahrenheit Rankine R = F + 459.67 Kelvin Fahrenheit F = [(K x 9) / 5] - 459,67 Rankine Fahrenheit F = R - 459.
BUILDER DATA Builder data BUILDER DATA Every Control S.r.l. Via Mezzaterra 6, 32036 Sedico Belluno ITALY Phone 0039-0437-852468 (a.r.) Fax 0039-0437-83648 info@everycontrol.it www.everycontrol.it To be careful This publication exclusively belongs to Every Control and shall not be reproduced and distributed if not expressly authorized by the same Every Control.
NOTES Notes Every Control S.r.l. Via Mezzaterra 6, 32036 Sedico Belluno ITALY • Phone 0039-0437-852468 (a.r.) • Fax 0039-0437-83648 • info@everycontrol.it • www.everycontrol.
