ASTRONOMICAL CONTROL SYSTEM FOR LIGHTING SC2A-60 Basic Manual DIMACO S.C.G. A Coruña. 2011
ASTRONOMICAL CONTROL SYSTEM FOR LIGHTING SC2A-60 1. INTRODUCTION The SC2A-60 is an astronomical clock to control the lighting. It provides highly customized programming capabilities allowing it to fit the needs of every facility, providing high quality service and great energy savings. The device performs an exact calculation of sunrise and sunset using the local geographic coordinates, longitude and latitude, given in degrees and minutes. These can be entered through a global geographic database of countries, provinces, cities or municipalities. The SC2A-60 can be used at any location on Earth in latitudes between 65 N and 65º S. The SC2A-60 basically controls three output circuits: Astronomical, Voluntary (or energy saving) and Auxiliary. The astronomical control can be advanced or delayed up to 60 minutes compared to the calculated sunrise and sunset. The voluntary control is based on a timetable combined with the astronomical state. The auxiliary control, capable to operate independent of the astronomical, is based on a timetable combined with daily, weekly and annual programs. The complete programming and operating data visualization can be done manually, using an alphanumeric retro-illuminated liquid crystal display and two push buttons. This can also be done with a software application in a computer plugged through the RS-232 connector available, allowing it to be used in a centralized lighting control system. Furthermore, this equipment allows remote firmware updating, and this can be done at the installation location. All these operating characteristics and its small size (housed in a modular DIN rail mounting up to 6 modules wide), turn the SC2A-60 in a very interesting equipment for the ease of programming, the saving factor that introduces on precise control of lighting switching to coincide with the sunset and the sunrise, the faculty to correct this astronomical switching, the potential to set different corrections and voluntary periods in summer and winter, and the outside elements installation no needing maintenance costs. 2. DESCRIPTION SC2A-60 P1 Nº AÑO P2 2 DIMACO S.C.G.
The unit is integrated into an envelope of self-extinguishing insulating material, consisting of a box, a front cover and terminal caps. The box, including lids connections at the top and bottom sides, is the supporting element of the equipment, having at the rear side a guide and symmetrical rail anchoring (EN 50022, BS 5584, DIN 46277-3) in 35 mm x 7.5 mm. The front cover contains a retro-illuminated alphanumeric LCD capable of 2 lines and up to 8 characters each line, push buttons P1 and P2 for manual programming and operating data visualization, and the 9 contact RS-232 male connector to allow near or remote PC connection, allowing complete data programming, displaying and checking operating data, and output circuit telecontrol. The terminal covers take care of covering the terminals and the wire ends attached to them, profiling the shape of the box. On the case and facing the terminal caps are the connection diagrams. 3. OUTSIDE TERMINAL CONNECTION SCHEMATICS +5VDC SC2A-60 0 VAC 230 VAC COMMON ASTRO/C ASTRO/O VOLUN/C VOLUN/O AUXIL/C AUXIL/O S4 S5 S6 S7 S8 I/O+ I/O- 0 VDC 0 VDC E1 E2 19 20 21 22 23 24 25 26 27 28 29 30 S1 S2 S3 1 2 3 4 5 6 7 8 9 Terminal description: - Terminals 1 and 2: power supply in 100-240 Vac. - Terminal 3: common output relay circuit. - Terminals 4 and 5: Astronomical circuit output, normally closed and normally open, respectively. - Terminals 6 and 7: Voluntary circuit output, normally closed and normally open, respectively. - Terminals 8 and 9: Auxiliary circuit output, normally closed and normally open, respectively. ASTRONOMICAL CONTROL SYSTEM FOR LIGHTING SC2A-60 3
In the absence of power supply the relay contact outputs remain in its resting (normal) position. 4. REGIME OPERATION After providing the supply voltage the SC2A-60 automatically enters in regime operating mode showing clock-calendar screen in the display. Pressing repetitively the button P1 the data verification screens are displayed sequentially without altering the normal (regime) operation. These screens are: 1) Clock-calendar screen: It shows the current date in the first line in format Day-Month-Year; and in the second line the weekday (Sunday, Monday, Tuesday, Wednesday, Thursday, Friday or Saturday), the hour and minute (HH:MM) in 24 hour format, in the official local time. The symbol ':' blinks every second. 2) Equipment model, firmware version and serial number screen: The serial number XXXXXX is a 6 decimal digit value which cannot be programmed by the user. It's internally stamped in the device's manufacturing process. 3) Calculated and corrected switching on and off times screen: It shows the calculated and corrected switching on (I) and off (O) times for the astronomical control circuit in official local time. 4) Output circuits S1 to S3 state screen: 18/06/11 Sa 10:36 SC2A60-3 NSXXXXXX I 17:41 O 07:46 As Vo Au O O O Shows the current on (I) / off (O) state of the three output circuits: Astronomical (S1), Voluntary (S2) and Auxiliary (S3). 5) Key code input screen to get access to manual data programming: P2 Enter Key code 4 DIMACO S.C.G.
When the valid key code is inserted, it permits the access to manual data programming (see data programming chapter). This screen is skipped when the key code was disabled (programmed with the value zero). CLOCK Features an integrated clock calibrated by the manufacturer which guarantees an accuracy better than 0.4 s/day, not accumulable, with perpetual calendar time (taking account of leap years), and automatic execution of adjustments or daylight savings (as long as these have not been disabled). A lithium battery ensures data integrity for over 10 years in the absence of power supply. ADJUSTMENTS OR DAYLIGHT SAVING The SC2A-60 adjusts itself to the official time of the country/local. When the adjustments are enabled (Ad- 1) the time changes are performed automatically in accordance to the following table: Program No. Daylight saving starts on Daylight saving ends on 0 Day-month programmed for the summer season start Day-month programmed for the winter season start 1 Last March's Sunday Last October's Sunday 2 Second March's Sunday First November's Sunday 3 First April's Sunday Last October's Sunday 4 Second March's Sunday Last October's Sunday 5 First October's Sunday First April's Sunday 6 Last September's Sunday First April's Sunday 7 Third August's Sunday Second May's Sunday 8 Third October's Sunday Third February's Sunday 9 First September's Sunday Third April's Sunday 10 First October's Sunday Second April's Sunday 11 First October 's Sunday Second March's Sunday 12 First September's Sunday First April's Sunday 13 Is coded in day-month of summer season start Is coded in day-month of winter season start The device performs the time changes to start daylight saving time (at 2:00 jumps automatically to 3:00) and stop daylight saving time (at 3:00 jumps automatically to 2:00). SEASON CHANGES For determining the summer or winter season this machine has two modes: programmed mode and automatic mode. In programmed mode the changes are made on the scheduled dates for this, and in automatic mode, selected when these dates are set to ASTRONOMICAL CONTROL SYSTEM FOR LIGHTING SC2A-60 5
zero, they coincide with the dates of the adjustments or automatic daylight saving time changes. ACTUATIONS In regime operating mode it performs the corresponding output circuit actuations in accordance to the programmed values and the time data. In the output status screen S1 to S3 indicate the true on (I) or off (O) output circuit status. LITHIUM BATTERY The SC2A-60 continually performs monitoring of the lithium battery charge level used as a backup. In case of detecting low charge level it shows the following screen (a replacement by another of the same type is urged): Li Batte discharg DATA CHECKING Likewise a continuous check is performed on the internally stored data. In case of detecting any error the unit immediately shows the following screen: GENERAL FAILURE In this case a reset must be performed. See data programming. 5. DATA INPUT. MANUAL PROGRAMMING It's performed using the push buttons and the display. The blinking digit signals the decimal value actuated by the 'advance' push button P1. When the desired value is reached it can be fixed using the push button P2 and the control goes to the next. To be able to enter the data block programming is necessary to first enter the access key code (when enabled). ACCESS KEY CODE ENTERING At the key code entering screen for access to manual programming of data blocks: Pressing P2 the display shows: P2 Enter Key code Key code 00-00-00 6 DIMACO S.C.G.
When a valid key is entered the unit shows the programming screens for the successive data blocks. Initially the access key is enabled and preloaded with a default value 01-01-01. When an invalid key is used the unit shows for several seconds the message: Invalid Key code DATA RESET In case of forgetting the key code an initialization is required to perform data programming. Proceed as follows: a) Enter any key and whilst the display shows the invalid key code message unplug the unit from the power supply. b) Open the unit (disconnect previously the wires plugged to the terminals and take it out of the rail), carefully moving away the four clamps that fix the box with the rear cover. c) Press twice the push button located in the corner of the internal control board. d) Close the unit and connect the wires again. e) Reprogram the unit completely. A) LANGUAGE PROGRAMMING At the language programming screen: Pressing P2 the display shows: Language English Language P1 allows the selection of the different languages for data visualization. P2 sets the language to the selected value and jumps to program the next data block. B) DATE-TIME PROGRAMMING At the Date-Time programming screen: Date-Tim Pressing P2 jumps to the date-time programming. It's performed in two steps: ASTRONOMICAL CONTROL SYSTEM FOR LIGHTING SC2A-60 7
1) Date programming: After finishing the programming in this screen the unit checks the entered values. In case of detecting erroneous data it shows an error message and restarts date programming. 2) Time programming: dd-mm-yy 19-07-11 hh:mm:ss 09:47:34 The time entered here is the local official time. C) ASTRONOMICAL CIRCUIT PROGRAMMING At the Astronomical circuit programming screen: Pressing P2 the display shows: Astronom P1 Int Pressing P1 enters the geographical database wizard. Pressing P2 skips this wizard and goes directly to the data programming. Several geographical databases are available: 'Int' is a global international database, organized by countries and cities of all around the world. 'Esp' is a Spain, Andorra and Gibraltar database, organized by provinces and municipalities. Using the 'Int' database to program, for instance, the city Santiago de Chile. First, select the country pressing P1: Chile P2 sets the value, and next P1 is used to select the city: Chile Santiago 8 DIMACO S.C.G.
P2 fixes the selected location and its data (latitude, longitude, time zone difference and time changes program) are preloaded for the successive block programming screens. The astronomical data programming is performed in 8 steps: 1) Latitude programming: 2) Longitude programming: 3) Time zone programming: The value to enter here is the difference in hours-minutes between the local official time and the civil Greenwich Time (UT). 4) Time change program number setting: Latitude 33º27'S Longitud 070º38'W Differen -04h00m Program T.C.: 07 See the Time Changes or Adjustments table. 5) Astronomical switching-on correction program during summer time (±60 minutes): Correc.I Su: +00m 6) Astronomical switching-on correction program during winter time (±60 minutes): Correc.I Wi: +00m 5) Astronomical switching-off correction program during summer time (±60 minutes): Correc.O Su: +00m 5) Astronomical switching-off correction program during winter time (±60 minutes): Correc.O Wi: +00m ASTRONOMICAL CONTROL SYSTEM FOR LIGHTING SC2A-60 9
D) MODE PROGRAMMING At the operating modes programming screen: Mode Pressing P2 the programming is performed in two stages: 1) Astronomical and Voluntary circuits operating mode programming: Ast/Vol Mode:01 The operating mode must be selected on the basis of the expected use of the Voluntary and Astronomical circuits, in accordance to: 00= Astronomical and Voluntary circuits off mode. 01= General application mode (default). 02= Flux reduction systems mode. The voluntary circuit switching on is delayed 4 minutes after the astronomical circuit turns on. Likewise, after a power supply failure, the astronomical circuit is delayed 2½ minutes. 03= Alternated mode for the astronomical and voluntary circuits. Every odd day of month the unit operates normally. On even days of month the astronomical and voluntary circuits alternate their roles. Beware that the days (odd or even) start at 12h00m at next day's noon. 2) Auxiliary 1 circuit operating mode programming: Auxil:01 Mode:05 The auxiliary circuit operates by default in mode 05 with 4 daily programs. For information about daily and weekly-annual programs consult the Complete Manual. E) VOLUNTARY CIRCUIT PROGRAMMING At the Voluntary circuit programming screen: Voluntar Pressing P2 allows setting switching periods for summer and winter times in 4 stages: 1) Summer time Voluntary Start period (switching on time) programming: Volunt.I Su 00:00 10 DIMACO S.C.G.
2) Summer time Voluntary End period (switching off time) programming: Volunt.O Su 00:00 3) Winter time Voluntary Start period (switching on time) programming: Volunt.I Wi 00:00 4) Winter time Voluntary End period (switching off time) programming: Volunt.O Wi 00:00 F) WEEKLY HOLIDAYS AND ADJUSTMENT PROGRAMMING At the Weekly Holydays and Adjustment screen: Pressing P2 the next screen is displayed: Week.Hol MTWTFSSA 00000111 Weekly programming: Monday Tuesday Wednesday Thursday Friday Saturday Sunday. A '1' value means that weekday is to be considered always as holiday. By default, Saturdays and Sundays are programmed as holidays. Adjustment: A '1' value means the adjustment or automatic time saving is enabled. It's the default value. G) AUXILIARY CIRCUIT SWITCHING PERIODS PROGRAMMING At the switching periods settings screen: Pressing P2 allows to program the 4 switching periods in 4 steps: 1) Period 1 programming: Periods P1 00:00 P1 00:00 ASTRONOMICAL CONTROL SYSTEM FOR LIGHTING SC2A-60 11
... 4) Period 4 programming: P4 00:00 P4 00:00 The first line contains the period start time (switching-on time), and the second line contains the period end time (switching-off time). H) WEEKLY-ANNUAL AUXILIARY CIRCUIT PROGRAMMING The auxiliary circuit operates with daily and weekly-annual programs, in accordance to the settings in the auxiliary mode programming. For information about daily and weekly-annual programs consult the Complete Manual. I) HOLIDAYS PROGRAMMING For more information about daily and weekly-annual programs consult the Complete Manual. J) VACATION PERIODS PROGRAMMING For more information about daily and weekly-annual programs consult the Complete Manual. K) SEASON CHANGES PROGRAMMING At the Season Changes programming screen: Seas.Cha Pressing P2 allows to program the day and month (in DD/MM format) of summer and winter seasons start date. Su:00/00 Wi:00/00 For the automatic time change special program nº13, the time change data are coded into the season change settings. In the first field the Sunday of time adjustment is coded as: 01= First Sunday of the month, 02= Second Sunday of the month, 03= Third Sunday of the month, 04= Fourth Sunday of the month, 05= Last Sunday of the month. In the second field the time adjustment month is programmed. 12 DIMACO S.C.G.
L) EXTERNAL SYNCHRONISM PROGRAMMING For more information about synchronization with external modules consult the Complete Manual. M) SERIAL CHANNEL PARAMETERS PROGRAMMING For more information about serial communications channel programming consult the Complete Manual. N) KEY CODE PROGRAMMING At the key code programming screen: Pressing P2 shows: Key code Key code 00-00-00 The allowed values to program are in the range from 00-00-00 to 99-99-99. The value 00-00-00 disables the access key. The unit initially loads 01-01-01 as the default access key. 6. CALCULATED OUTPUTS OPERATION ASTRONOMICAL CIRCUIT Switching on is controlled by the time of the calculated sunset (for the programmed location and date) plus the switching-on correction of -60 to +60 minutes programmed. Switching off is controlled by the time of the calculated sunrise (for the programmed location and date) plus the switching-off correction of -60 to +60 minutes programmed. VOLUNTARY CIRCUIT The voluntary circuit ON interval is limited to the astronomical ON interval and can be scheduled by programming the voluntary circuit periods. Whenever desired to always keep this circuit on together with the astronomical one the scheduled period must start always prior to the astronomical switching on, for example, at 12h 0m. ASTRONOMICAL CONTROL SYSTEM FOR LIGHTING SC2A-60 13
AUXILIARY CIRCUIT The auxiliary circuit is able to operate with daily, weekly and annual programs. It can perform many kind of programming with a great flexibility. The auxiliary circuit switches on when the current time is within any of the active periods (1, 2 or up to 4) fixed in the daily or weekly-annual programs. 1) Daily programs Switching periods set as daily have the maximum priority and thus they run every day. 2) Weekly-annual programs For information about daily and weekly-annual programs consult the Complete Manual. 7. COMMUNICATIONS The SC2A-60 includes a channel for asynchronous serial communications with a PC, implementing a proprietary communications protocol that allows easy full data programming and verification of operational state, direct remote control of the output circuits, remote maintenance of the device's internal firmware and events file dumping (optional). 8. OPTIONAL FEATURES The SC2A-60 has several optional elements (upon request) that can be incorporated to the equipment in any combination, to extend its features. 1) 5 additional outputs for the connection of external relays R4 to R8. These can operate as auxiliary outputs with independent weekly-annual programs. 2) 2 inputs for the connection of transistor or volt free outputs. Can be used for the measure of electric parameters, lighting levels, lamp state, etc. 3) RS-485 communications interface. To connect with other modules establishing a multipoint net. 4) Event file. Up to 992 event registers can be logged. These file can be dumped through the serial port. 5) GPS module. Allows the capture of local longitude and latitude and the continuous clock synchronism for enhanced precision control. 6) GSM-GPRS communications modem. To communicate in remote mode with a centralized control system or telemanagement server. 14 DIMACO S.C.G.
9. TECHNICAL FEATURES Perpetual time clock with integrated precision oscillating circuit, automatic time changing (daylight savings), following the official country rules, and backed up to 10 years. Alphanumeric liquid crystal display (LCD) with two lines featuring eight characters each, at extended temperature range from -20ºC to 70ºC. Three output circuits (Astronomical, Voluntary and Auxiliary) by relay switched contacts and capacity 8A/230Vac. Universal power supply 100-240Vac. Consumption: 5VA. Serial communications port RS-232 with standard connector. Can be added optionally 2 digital inputs and 5 outputs independently programmable, RS-485 port for connection to other modules, and events file. Modular box built of insulating material for DIN rail in dimensions: 105 x 95 x 58 mm (width x height x depth). ASTRONOMICAL CONTROL SYSTEM FOR LIGHTING SC2A-60 15
APPENDIX. LIGHTING CONTROL WITH FLUX REDUCTION EXAMPLE. Two circuits are required with the following programs: Circuit 1. (General lighting) Switched on every day delayed 30 minutes in summer season and twenty minutes in winter season, after the sunset. Switched off every day 25 minutes in summer season and 15 minutes in winter season, ahead the sunrise. Circuit 2. (Flux reduction) Start flux reduction at 00h00m until lighting switch off in summer season, and at 23h00m in winter season. Furthermore, after a power supply failure, the lighting switch on must be delayed 2 minutes and a half, and to enter in reduction mode, where appropriate, must be delayed 4 minutes after the general switching on. Solution: S1 S2 S3 3 4 5 6 7 8 9 COMMON CIRCUIT1 CIRCUIT2 Circuit 1 has to be connected to the astronomical circuit N/O output, and circuit 2 has to be connected to the voluntary circuit N/O output. Local date and time, and geographical coordinates can be programmed manually. Astronomical switching on and off corrections: Correc.I Su: +30m Correc.I Wi: +20m Correc.O Su: -25m Correc.O Wi: -15m Operating mode: Ast/Vol Mode:02 Voluntary: Volunt.I Su 00:00 Volunt.O Su 10:00 Volunt.I Wi 23:00 Volunt.O Wi 10:00 The remaining undepicted data must be zero. 16 DIMACO S.C.G.