LARTET DN-107P, Руководство по эксплуатации

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CHAPTER 4 OPERATION 4-11
DN-107P displays series
4.3.5. Function 3. Counter
The counter function permits to configure the display to work as a impulses counter. It
has inputs to load presets (2), increase, decrease and Reset.
It can work with a multiplying or splitter factor.
When it works with a multiplying factor, the counter is increased or decreased the
number of the factor. If the multiplying factor is 5, each impulse increase or decreases 5 units in
the counter.
When working with a factor less than 1, the position of the decimal point must be taken
into account to see the variation of the counter. Example:
Factor value = 0.01. Decimal point position = 1
Counter value after pressing Reset (E3) = 0.0
Counter value after 10 pulses increase (E4) = 0.1
To work with low frequencies, the counter can be configured to ignore parasite impulses
like bounce contacts.
The maximum frequency is 10kHz
When it arrives to the maximum or minimum the counter flashes. A 4 digits
display has a maximum value of 9999 and a minimum value of -999.
Programming the automatic functions:
The automatic functions a
re programmed modifying the right’s digit of the second
parameter 2 Co. See 4.2.4
“Parameters of the function 03 (Counter)”. Remember that the
automatic functions are available in low frequencies.
When the counter’s value is equal to one of the values of the alarms, one programmed
action starts.
Example:
Parameter 2 Co = 03. Parameter 3 P1 = 75.
Parameter 5 A1 = 40. Parameter 9 FA = 1.
The parameter 2 has been programmed to increase in one unit (parameter 9 = 1). Load
the value of preset 1 (
75) when the counter’s value is equal to the value of alarm 1 (40).
Displays with relay:
If the display has the relay option, the relay can be configured to be activated in different
situations. Each relay has an independent parameter to program. (See Error! No s'ha trobat l
'origen de la referència.
“Parameters of the function 03 (Counter)”).
Example:
Parameter 7 S1 = 15
Activate output 1 during 2 seconds, when the counter’s value is equal to the alarm 1
value.
Control inputs:
The power supply of the inputs should be between 12V and 26VCC and the inputs can
be PNP, NPN or CONTACT.
E1 Loads preset 1.
E2 Loads preset 2.
E3 Reset.
E4 Increase the counter.
E5 Decrease the counter.