Counter CNT42
Modified counter CNT4. Has been intended for count down the determined number impulse after whom start the signalization siren. Are programmed number the impulse before the end (0...9999) activates the relay output also he holds the switched on determined period (0,1..9,9 second). As required was able make and any other function. Differences in respect to CNT4 have made green.
Characteristics:
 microcontroller controlled counter with watchdog (autoreset in case of jamming)
 local count down 1 to 9,999 impulse
 summary counter to 999,999 (possibly him user cancels)
 generates the warning signal of impending finish and this on is programmed number the impulse (e.g. 10 before the end - possibly from 0 to 9999). At the same time the start activation the relay output.
 programable divider for the expansion of range: 1..256 (practically 1,10 or 100) also thus the expanded counter on maximal 999,900 in the local count down (with divider=100) ). On the summary counter does take effect the divider.
 display of the summary or the local counter - changeable in the work
 standard adjusting:
 Number of impulse for local count down (0000-9999)
 number of impulse for the activation ringing presignalizations and relays (0-9999 )
 during the standard adjusting count-down still acts up to last given parameters
 programmable parameters of work (the duration sirens, duration forsignalization , duration of involvements of relays, filtrations of entrances, count towards 0 or to the set value, edge counter, active level of outer entrance, activation on the edge of outer entrance, blackening leading zeros,...)
 monitoring of states of entrances usable at adjustings of parameters counter
 detection of the jammed key at switch on also the transition on the keyboards diagnostic
 minimal widths of durations of entry impulse or pause: 2 ms (adjustable to 255 ms)
 maximal frequency count down: 250Hz / fs=0,5 i.e. 18,000 / hour / fs=0,01 (fs=factor of fills the impulse for the counter)
 possibly the function external entrance which is on the choice:
 reset count down
 reset of the summary counter
 reset both counter
 prohibition or the permission counting
 reset stop the output
 function relay output:
 were activated during the ton prewarnings on the determined period (0,1..9,9 seconds)
 only two keys for the control of work (the technique of measurement of length press):
 T1 = stop / adjusting
 T2 = reset / program selection
 LEDs:
 stop the counter
 program 2
 LED display 4 digita 14mm / 125Hz refreshing
 remembers state the tallyman, divider, stop the function and programs (in EEPROM 24LC16) at switching off
 indicates errors on EEpromu after verifications recording and across the double check of parities of data
 indicates drop voltages of power supplies and is not performed the preparing states counter as long as the voltage power supplies are not at least the 1 minute (after that) uninterrupted
 power supply 24VAC / 30VDC or 220VAC / 2VA maxes - the typical 1VA (switching converter)
 input of counter galvanically is separated from the power supply
 box 48 * 96 * the 120 mm
 guarantee 3 years
 the insured servicing and technical documentation
 on request (with the extra payment) can implement the special function of entrance or the output also all other at wish (e.g. membrane keyboards)
Appearance of front mask:
time period of construction: 21 day
Price with the siren 100dB and instruction: 1000 HRK (133eura)
Price of complete project (scheme, PCB draft, software source in the assembler, algorithms): 7500 HRK (1000 eura)
Terminals without the external entrance and relay output:
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