1. PREFACE NC7311 Control Unit, in connection with NR Controllers, can be used in the centralised systems for the regulation of room temperature. Rev. a 03/05 DMP025E...
USER MANUAL 2. OPERATION NC7311 Control Unit operates by assigning to the controllers one of the four possible operation modes corresponding to different system operation requirements. • COMFORT mode (NM) with set point programmable by the Control Unit. • UNOCCUPIED mode (RC), which can be reset by acting on the room sensor, with a set point of ±...
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USER MANUAL When required, the controllers may be considered as “SINGLE”. It is possible to assign to each one of these controllers, certain operation parameters, allowing an independent management of specific premises. Setting operations are carried out on the Control Unit; thus, cyclically, it supplies data to all the programmed controllers.
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USER MANUAL Data display It is possible to check the operation and eventually modify the parameters set using the function keys and the data display (4 lines – 20 rows) placed on the front panel. All data are available by browsing the various Menu-like organised pages.
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USER MANUAL Holidays and vacation periods (yearly programme) To each group it is possible to set up to 10 public holidays and 5 vacation periods assigning one of the following modes unoccupied (RF+RC), anti-frost (AF), and comfort (NM). This implies the creation of a “yearly programme” which substitutes the time schedules during the set periods.
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USER MANUAL Priority The operating priorities the control unit follows are: 1. "Permanent" group override. 2. “Temporary" and "Permanent" override of the single (privileged) controllers. 3. "Temporary" group override. 4. Vacation period programme. 5. Holiday programme. 6. Weekly schedule. Summer/winter changeover The control unit is provided with 4 inputs in order to set summer/winter operation for each group.
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USER MANUAL characteristics of high immunity to interferences and since it allows long connections with a large number of devices. The overall time elapsing between call and reply is of approximately 0,4 seconds. Each controller is recognised by the control unit through an “address card”...
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USER MANUAL The cables enter the case from the bottom through five cable sleeves protected by removable plastic plugs; it is possible to insert PG 13,5 compression glands. The display and the keys are protected by a front panel and by an elastic film.
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USER MANUAL Connection with supervisor system: Interface EIA RS232 EIA RS485 (optional) Max. length 15 m with RS232 150 m with RS485 The product conforms to EMC 89/336 directive with reference to the below mentioned standards: EN50081-1 for emission EN50081-1 for immunity Issue 10/00...
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DIGITROLL 7000 leaflet. INSTALLATION AND START-UP Installation NC7311 control unit is suitable for wall and rack mounting (through a kit of connecting clamps). Perform wiring in compliance with the outside connection diagram and with the existing rules.
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DEFAULT DATA AND RELATED MODIFICATION RANGES Description Range Pre-program. value NR. of controllers. 1...160 Existing groups 1...4 Single controllers 0...160 RC/RF cooling qualification Yes/No Set point in NM mode 11...29°C 21°C Dead zone 0...6k C channel actuator stroke 0...100% F channel actuator stroke 0...100% Control type P / P+I...
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Weekly schedule: All controllers are set in Automatic Control SELF AND SYSTEM TESTS The control unit is equipped with self-test functions: • Clock misfunctioning. • Data memory misfunctioning. • Outside sensor misfunctioning. In presence of one of the former anomalies, the communication with the controllers is interrupted;...
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USER MANUAL TERMINAL BOARD N3096 LEGEND 24 V∼ power supply “ Earth Ground common input Common V+ input Outside sensor Digital input Digital input Digital input Digital input Digital input Digital input Digital input Digital input Digital input RT (-) Communication BUS RT (+) RS 485...
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USER MANUAL EXTERNAL CONNECTIONS DIAGRAM N3095 LEGEND SBE external sensor Cooling qualification Heating qualification .Group 1 Heating qualification .Group 2 Heating qualification .Group 3 Heating qualification .Group 4 S/W changeover Group 1 S/W changeover Group 2 S/W changeover Group 3 S/W changeover Group 4 RS 485 Connection towards controllers...
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USER MANUAL OVERALL DIMENSIONS FRONT PANEL DRILLING Issue 10/00 DMP025E...
3.2. FEW HINTS ON OPERATION SEQUENCE NC7311 user interface is composed of an alphanumeric display and seven function keys. All the information can be reached through a browsing of the tree- organised pages and, therefore, detectable by menu pages.
USER MANUAL 3.2.1. Browsing When the apparel is in normal operating conditions, the display shows the following page defined as controller status page”. Mo 13 Jan ‘97 17:55 Out Temp + 22.5^C Gr1 Gr2 Gr3 Gr4 Sng A-H A-H A-H A-H The key selects the MENU page which allows to access, MENU...
USER MANUAL If the cursor is positioned on the former sign, by pressing the à ENTER key the following page is displayed. Similarly the sign “-” indicates there is an upper level page, therefore, by pressing the key the upper-level page is Ã...
USER MANUAL 3.2.3. Programming To programme a controller data it is sufficient to enter the page containing the chosen data. Press Key to start the programming session. PROG The related red signal will start blinking. key to go to the data fields keys to set the required value.
3.3. DISPLAYING AND PROGRAMMING In this chapter are described the necessary operations to display and/or set all the operating data of the controllers connected to NC7311 control unit. 3.3.1. Display and setting of “controller status page” This page is displayed after the system start-up, when whichever page is displayed for more than 3 minutes without acting on it and through page browsing.
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USER MANUAL • The blinking cursor will place itself near the day of the week indication. • Push the key until the cursor is before the datum, which has to be modified. • Press the key until the required value appears. •...
USER MANUAL 3.3.2. Displaying and setting of the controller grouping The control unit has a base of 100 programmed controllers assigned to group 1. If the number of controllers of the system is inferior, it is necessary to cancel the exceeding ones by assigning them to the fictitious group C.
USER MANUAL Reg N. 3.3.2.1. Selection of a group controller • Press the key . The related red signal will start blinking. PROG • Press the key until the cursor is under the word “REG N.”. • Press the key until he number of the chosen controller appears.
USER MANUAL 3.3.2.2. Selection of a single privileged controller • Press the key .The related red sign will start blinking. PROG • Press the key until the cursor is under the word “REG N.”. • Press the key until the number of the controller, which has to be inserted, appears.
USER MANUAL 3.3.3. Displaying and setting of regulation parameters for single or group controllers Three pages are available to set data belonging to a single or group controller. Some data are not significant for the former NR70XX series controllers, since they provide the management of extra parameters, which cannot be edited •...
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USER MANUAL PARAMETERS CONTR Set:21.0 ^C Dz:3 K %Stroke: C 34 F The informations contained are: • Set point. • Dead zone. • Heating actuator stroke percentage (for NR70XX controllers it represents both heating and cooling). • Cooling actuator stroke percentage (significant for NR71XX and NR72XX controllers).
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USER MANUAL The informations contained are: • P or P+I regulation type (significant for NR71XX and NR72XX controllers). • Integration time for heating and cooling (significant for NR71XX and NR72XX controllers). • Proportional band of heating and cooling (significant for NR71XX and NR72XX controllers).
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USER MANUAL The first page of regulation parameters allows the selection of a controller: • Press the key .The related red sign will start blinking. PROG At first set data for each group. • Press the key until the cursor is placed near “Gr.”. •...
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USER MANUAL Ã • Press the key again to pass to the second page of ENTER regulation parameters. • Press the key to place the cursor near the datum, which has to be modified. • Press the key until the required value is displayed. •...
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USER MANUAL • Press the key to exit the setting of regulation parameters. MENU Once a controller has been considered, and, therefore, programmed, as single (Sng) its parameters are not influenced anymore by the parameters of the group it belongs to. Issue 10/00 DMP025E...
USER MANUAL 3.3.4. Displaying and setting of time schedules The control unit operates following a yearly calendar, which can be obtained through the steps below: • Setting of daily schedules (max 5). • Setting of the weekly schedule by assigning to each day of the week a daily chosen programme or a fixed mode.
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USER MANUAL The following page will be displayed: TIME SCHEDULE DAY PROGRAM WEEK PROGRAM HOLIDAY/VACATION • Press the key until the cursor is placed near the line “DAY PROGRAM”. • Press the key à ENTER The following page will be displayed: - DAY PROG N: 1 NM 07:30...
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USER MANUAL • Press the key until the cursor is placed near the letter “N:” of the daily schedule. • Press the key until the number of programme, which has to be edited, appears. • Press the key .. The related red signal will start blinking. PROG •...
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USER MANUAL If, in the setting of a daily schedule, an hour will result inferior or equal to the one which precedes, by pressing the key à ENTER sign “?” will appear near the error, with the cursor blinking on it. Therefore, it is necessary to: •...
USER MANUAL 3.3.4.2. Weekly schedules • Recall the MENU page by pressing the key MENU MENU’ CONTROLLERS TIME SCHEDULE CONTROLLERS STATE • Press the key until the cursor is placed near the line “TIME SCHEDULE”. • Press the key à ENTER The following page will be displayed: TIME SCHEDULE...
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USER MANUAL • Number of the group the weekly schedule is associated with. • The days of the week. • The daily schedule or the mode type (valid for 24 hours) associated to each day. These are data, which can be set by the operator in the following way: •...
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USER MANUAL • Press the key Issue 10/00 DMP025E...
USER MANUAL 3.3.4.3. Vacation and holiday schedules For each group it is possible to set up to 5 vacation periods and 10 holidays. 3.3.4.3.1. Holidays • Recall the MENU page pressing the key MENU MENU’ CONTROLLERS TIME SCHEDULE CONTROLLERS STATE •...
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USER MANUAL The following page will be displayed: - HOLIDAY/VACATION Holiday Gr: 1 State: RF On -- --- The informations it contains are: • Holiday number (max 10). • Number of the group the holiday is associated with. • Mode assigned to the holiday. •...
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USER MANUAL To programme one or more holidays it is necessary to recall the holiday page: • Press the key .. The related red signal will start blinking. PROG • Press the key until the cursor is placed near the datum, which has to be modified.
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USER MANUAL The selection of 0 day will cancel the set holiday: the sign ”--” will appear on the place of day and month A test is made on the month of February taking into consideration the leap year: in case of error the sign ”?”, with the cursor blinking on it, will appear.
USER MANUAL 3.3.4.3.2. Vacations • Recall the vacation page. • Press the key so as to place the cursor near the line “Holiday”. • Press the key to select the following page: - HOLIDAY/VACATION Vacation Gr: 1 State: RF FM -- --- TO -- --- The informations contained are: •...
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USER MANUAL • Press the key .. The related red signal will start blinking. PROG • Press the key until the cursor is placed near the datum, which has to be modified. • Press the key until the required value appears. •...
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USER MANUAL A test is made on the month of February, taking into consideration the leap year, and on the date of the vacation end which has to be subsequent to the one of the beginning: in case of error the sign ”?”, with the cursor blinking on it, will appear. Therefore, it is necessary to : •...
USER MANUAL 3.3.5. Displaying and setting of the controllers regulation parameters When a system is initialised, it can be useful to impose a specific mode to one or more group and/or one or more single controllers in order to perform extensive tests on the system different constituting elements.
USER MANUAL The following page will be displayed: -MAN/AUTO CONTROL CONTR AUTO Reg NM The informations it contains are: • Number of the group or single controller the control type is provided for. • Control type. • Mode type. 3.3.5.1. AUTOmatic operation setting AUTOmatic operation puts the regulators under the control of time changeovers imposed by time schedules.
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USER MANUAL • Press the key so as to display the number of the group or of the single programmed controller it is provided to display or modify. • Press the key . The related red signal will start blinking. PROG •...
USER MANUAL 3.3.5.2. PERManent manual operation setting It is possible to alter the sequence of the mode changeovers provided through the time schedules, by overriding permanently the controllers in a chosen mode. • Recall the “MAN/AUTO CONTROL” page. • Press the key so as to place the cursor near the line marked with “Gr.”...
USER MANUAL • Press the key . The related red signal will stop blinking. PROG The former operation sequence has to be repeated for each group used and single controller. To exit the control type setting, act as follows: • Press the key so as to place the cursor near the symbol “+”.
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USER MANUAL • Press the key so as to place the cursor near the line marked with either “Gr”, indicating the group number or “Sn”, indicating the number of the single programmed controller. • Press the key so as to display the number of the group or of the single programmed controller, which has to be modified.
USER MANUAL The former operation sequence has to be repeated for each group used and single programmed controller. To exit the control type setting, act as follows: • Press the key so as to place the cursor near the symbol “+”. •...
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USER MANUAL The following page will be displayed: -CONTROLLERS STATE 1 S Gr 1 Reg NM T 22.3^C Sp 22.0^C %ACT OUT 0 F--- The informations it contains are: • Controller number. • Group it belongs to or if it is a single controller. •...
USER MANUAL To exit the display of the controllers’ set point, act as follows: • Press the key so as to place the cursor near the symbol “-”. • Press the key à ENTER 3.3.7. Displaying of the operation parameters averages It is possible to display in every moment the averages of the values coming from each controller group or from the whole system.
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USER MANUAL The following page will be displayed: -AVERAGE VALUES Gr: X ROOM TEMPERATURE STATES %ACTUATORS OPEN The following page will be displayed: • Number of the group whose average display is required. The former is a menu page in which it is possible to display, for the group set, sub-pages containing the following information: •...
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USER MANUAL To exit the average display menu act as follows: • Press the key so as to place the cursor near the symbol “-”. • Press the key à ENTER When the letter “T” appears as a group number, it means that the averages are referred to the whole system.
USER MANUAL 3.3.7.1. Displaying of the room temperature averages • Recall the page “AVERAGE VALUES”. • Set the required group number. • Press the key so as to place the cursor near the line “ROOM TEMPERATURE”. • Press the key Ã...
USER MANUAL 3.3.7.2. Displaying of mode averages • Recall the page “AVERAGE VALUES”. • Set the required group number. • Press the key so as to place the cursor near the line “STATES”. • Press the key à ENTER The following page will be displayed: AVERAGE STATES 70 % 30 %...
USER MANUAL 3.3.7.3. Displaying of the actuators opening percentages averages • Recall the page “AVERAGE VALUES”. • Set the required group number. • Press the key so as to place the cursor near the line “% ACTUATORS OPEN”. • Press the key Ã...
USER MANUAL 4. DIAGNOSTICS Consultation pages, which allow to have a general overlook of the situation, are available with the purpose to check anomalies or to test periodically the whole system. • Press the key to select the related page. The led on the key TEST will start blinking.
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USER MANUAL To exit the diagnostics menu page, act as follows: • Press the key so as to place the cursor near the symbol “-”. • Press the key à ENTER Issue 10/00 DMP025E...
USER MANUAL 4.1. SYSTEM DIAGNOSTICS • Recall the page “DIAGNOSTIC”” • Press the key so as to place the cursor near the word “SYSTEM”. • Press the key à ENTER The following page will be displayed: - DIAGNOSTIC SYSTEM Clock Serial bus Data memory The informations it contains are:...
USER MANUAL 4.2. CONTROLLER DIAGNOSTICS • Recall the page “DIAGNOSTIC”” • Press the key so as to place the cursor near the word “CONTROLLERS”. • Press the key à ENTER The following page will be displayed: - CONTROLLERS DIAG Tot act cont: Tot def cont: The informations it contains are: •...
USER MANUAL 4.3. STATUS AND AUTHORITY DISPLAY • Recall the page “DIAGNOSTIC”” • Press the key so as to place the cursor near the word “CONSENS STATE”. • Press the key à ENTER The following page will be displayed: CONSENS STATE COOL CONS:S Heat: The informations it contains are:...
USER MANUAL 4.4. LOADING DEFAULT VALUES The architecture, with which the programming sequences necessary to achieve a good operation of the controllers connected have been compiled, should not induce the operator to frequent setting errors. Moreover, in certain pages tests on the data set are present. However, the operator could have the need to re-start from known conditions and, above all, to dispose of compatible to each other data, although they do not necessarily fit the environment in which...
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USER MANUAL • Press the key à ENTER • The command will be executed and then the system will return to the “Controllers status” page . It is necessary to underline the fact that, if this operation is confirmed, default data are overwritten on the ones previously set, excluding date and time.
USER MANUAL 4.5. DATA PRINT With a printer connected to the serial port, only with the base version, it is possible, when the system is running, to print operating and diagnostic data. In order to print it is necessary to: •...
USER MANUAL 5. FRONT PANEL DESCRIPTION 1. 4 lines X 20 rows display 2. Edit keys 3. Shift key to move the cursor within a page 4. ANOMALY blinking led 5. Led indicating the “TX” transmission of a message on RS232 / RS485 serial line 6.
USER MANUAL 6. PAGE CONFIGURATION CONTROLLER STATUS PAGE MENU PAGE 1 CONTROLLERS CONTROLLER GROUPING CONTROLLER CONTROLLER CONTROLLER PARAMETERS PARAMETERS PARAMETERS TIME SCHEDULES DAILY SCHEDULES WEEKLY SCHEDULES CONTROLLER STATUS HOLIDAYS VACATIONS MENU PAGE 2 MANUAL / AUTOMATIC CONTROL AVERAGE VALUES ROOM TEMPERATURE AVERAGE MODE AVERAGE...
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USER MANUAL ANALYTICAL INDEX Actuators Authority 30; 66 AUTOmatic Averages 56; 59; 60; 61 Browsing Calendar Clock Compensation Controllers 19; 24; 27; 34; 38; 41; 48; 54; 56; 62; 65 Controllers parameters Daily schedule Data display 20; 22; 24; 27; 34; 48; 54; 56; 59; 60; 61; 66 Data set Dead zone Default values...
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USER MANUAL Holidays 41; 42; 45 Integration Integration (time) Keys Leds Memory Data / Programming MENU key MENU page 19; 24; 27; 34; 38; 41; 48; 54; 56 Mode 35; 39; 49 Modes Operating set point Operation Outside temperature P or P+I PERManent Print PROG key...
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USER MANUAL Serial bus Set point Singles Status 19; 22 Status and authority STATUS page 20; 22 System 62; 64; 69 TEMPorary TEST key Time schedule Time schedules 34; 51; 52 Vacation Weekly schedules Issue 10/00 DMP025E...
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