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Hersteller: Omega Dateigröße: 198.03 kb Dateiname: Unterrichtssprache:

Page : 4 The common features for all series are the following: MECHANICAL.-Housed in a rugged extruded aluminium profile housing for panel mounting or free standing. Finished in anodized black colour. The frontal lens is mounted with a special rubber profile which provides the front part of the unit with an IP-65 protection. CONTROL SIGNALS .-Three inputs, sharing one common return. The operating mode depends on interlinking of the three control lines CONNECTIONS.-For output alarm are made using one screw-clamp connector of 4 terminals located on the rear part of the unit. For control signals are made using one Sub-D connector of 15 terminals located on the rear part of the unit. For serial data output are made using one Sub-D connector of 9 terminals located on the rear part of the unit. The recommended wire cross section is 0.5 mm2. For Power Supply uses a push-in cable connector with 2 terminals for power and 1 terminal for earth ground. The recommended wire cross section is 2.5 mm2. The fuse is located in the Power Supply socket, as well as the spare fuse. MEMORY.-Non volatile static RAM type, to maintain the real time clock running in power down or in case of power failure during two years. It allows 100,000 cycles ON/OFF. On the run time clock the data and alarm value will be stored also for a maximum of 2 years. RESET.-By remote push-button using the connector of 15 terminals on the rear part. Only for run time clock. 4.- MODELS 4.1.-MODEL LDP-1XX-C0. Display time using the format MM: SS Real time clock : 59 minutes, 59 seconds. Run time clock : 99 minutes 59 seconds. Real time clock or run time clock is internally DIP switch selectable. Run up or run down controlled by internal dip switch. 4.2.-MODEL LDP-1XX-C1. Display time using the format HH : MM Real time clock : 12 or 24 hours selectable. Run time clock : 99 hours 59 minutes. Real time clock or run time clock is internally DIP switch selectable. Run up or run down controlled by internal dip switch. 4.3.-MODEL LDP-1XX-C2. Display time using the format HH : MM : SS Real time clock : 12 or 24 hours. Run time clock : 99 hours, 59 minutes, 59 seconds. Real time clock or run time clock is internally DIP switch selectable. Run up or run down controlled by internal dip switch. Page : 5 5.- GENERAL SPECIFICATIONS DISPLAY Type . . . . . . . . . . . . . . . . . 4or6digits, 7 segments, red or green LED. Height digit . . . . . . . . . . . . 57 (2.3") or 100 mm. (4") Range max. .. . . . . . . . . . . 99 : 59 or 99 :59 : 59 Brightness. . . . . . . . . . . . . Set by switch for 25%, 50%, 75% or 100% (normal). REAL TIME CLOCK. Type . . . . . . . . . . . . . . . . . 59mm59ss(modelC0) 12/24 hours selectable Time setting. . . . . . . . . . . . By volt free contact closure inputs seconds reset, minutes advance and hours advance. Time accuracy. . . . . . . . . . ±1 minute per month. Power down. . . . . . . . . . . . Maintains time for minimum 2 years without mains power. RUN TIME CLOCK Type . . . . . . . . . . . . . . . . . 99mm59ss, 99 hh 59 mm or 99 hh 59 mm 59 ss Timer resolution. . . . . . . . . 1 second. Timer uncertainty. . . . . . . . 1 second max. per start/stop sequence. Timer memory. . . . . . . . . . Run time maintained for 2 years minimum but not updated with mains removed. Alarm. . . . . . . . . . . . . . . . . One minute or one second resolution (one minute only on model C2) set by external closure inputs. Alarm enable. . . . . . . . . . . Controlled by internal switch. Alarm output . . . . . . . . . . . Optically isolates transistor switch 30 V / 30 mA capacity. Alarm indication. . . . . . . . . Clock stop, display flashes and alarm output activates. Initialization . . . . . . . . . . . . By operation of one or more the control inputs. CONTROL LINES Type . . . . . . . . . . . . . . . . . Threeinputs sharing one common return. Threshold . . . . . . . . . . . . . Rising:+2.3 V min., +3.6 V max. Falling : +0.9 V min., +2.5 V max. Signal hysteresis. . . . . . . . 0.4 V minimum. Maximum signal. . . . . . . . . ±30 V. Loading . . . . . . . . . . . . . . . 100 K. to common for +5 V signal 18 K. loading beyond +5/-0.6V. Load . . . . . . . . . . . . . . . . . 1K. ±5% load may be internally jumpered to common or to the excitation supply for each control line. Response time. . . . . . . . . . 200 mS maximum: internally debounced for contact closure inputs. Active level. . . . . . . . . . . . . Internally jumpered to be active either with low level/falling edge or high level/rising edge inputs independently for each control line. CONTROL MODES Type . . . . . . . . . . . . . . . . . The operating mode depends on interlinking of the three control lines. One control . . . . . . . . . . . . To reset and run when active and stop when inactive. Two controls . . . . . . . . . . . One to run when active and stop when inactive and the other to reset. Two controls . . . . . . . . . . . One to alternately start and stop and the other to reset. Three controls. . . . . . . . ...

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