Electronic pulse counter / Pulse counter + -

Detailed description

General specifications of the DS-72A pulse counter:

2x 6-digit display,

2x PRESET value,

2x relay output OUT,

2x SSout for SSR relay control.

Counts signals from mechanical switches, limit switches, PNP/NPN inductive proximity sensors, and incremental encoder inputs.

Counting up/down.

Password protection.

Selectable input frequency: 20, 50, 2500, 7500 Hz.

Calibration constant: 0.00001.....9.99999

Selectable decimal point: 0 / 0.0 / 0.00 / 0.000

Function combination possibilities: 7 input functions / 10 output functions:

Addition,

countdown,

addition/subtraction from two inputs simultaneously,

counting/decoding pause controlled by the second input,

input negation controlled by the second input,

addition/subtraction from the rising edge / falling edge / both edges simultaneously,

addition by the rising edge / subtraction by the falling edge / negation of the function by the second input.

OFFSET" adjustable from the calculated value.

PRESET1 with absolute/relative value option.

OUT relay 2x: activated when the value is reached and held until RESET, or pulse in the range 0.1.....999.9 seconds.

The pulse counting value and the state of the OUT relay are stored during the last power outage and can be reset when power is restored.

Reset via the push button on the front panel or by a signal at the RESET(17) terminal.

Can display ½ preset values.

EEPROM memory for storing settings.

Technical specifications:

Dimensions / opening: 72x72x94 mm / 67x67 mm

Display: 2 LED screens with 6 digits and 7 segments.

LED indication: 5x: OUT1, OUT2, Finger1, Finger2, Batch.

Inputs: 2x (Max: 7500 Hz, 5-30 V)

NPN selection: connect the "npn select" terminal (13) to the "+12V" terminal (14) to connect the NPN sensor linked to input Cp1(15) and Cp2 (16).

The reset input is always PNP.

For totem pole encoders or PNP type encoders, the "npn select" will not be connected.

Input types: mechanical switch, PNP/NPN encoder, NPN/PNP/totem-pole encoder output.

Input frequencies: 20, 50, 2500, 7500 Hz.

Reset signal: terminal RESET (17), minimum 10 ms, signal + (PNP only) (5...30 V).

Outputs (OUT):

2x SPDT relays 250VAC, 2A, resistive load,

OUT1: terminals 6=COM, 5=NO, 7=NC

OUT2: terminals 9=COM, 8=NO, 10=NC

SSout 2x SSR control - NPN, 30V, 100mA max, terminal 18=SSout1, 19=SSout2, 20=GND

Sensor power supply: terminal (14) 12 VDC, 50 mA (max.), unregulated.

Supply voltage: 100...240VAC, 50-60Hz.

Power consumption: < 8 VA

Operating temperature: -20°C ... +55°C

Altitude: <2000m

Installation notes:

Use shielded twisted signal cables and connect the shield to ground. Keep all signal cables away from circuit breakers, inductive loads, equipment/cables emitting electrical noise, and power cables. Take precautions against environmental influences such as humidity, vibrations, pollution, and high/low installation temperatures.

Use a fuse (F250mA 250VAC) at the input of the network/power supply of the equipment.

Use appropriate cables for power supply. Follow safety rules during installation.

Prefer the option (Inpt = Phs1) for encoders,

Select (Freq = 20) for counting the ON-OFF mechanical switch pulses.

Always select the minimum input frequency option that suits your application.

For Inpt = 1u2u, 1u2d, Phs2; the input signal frequency must not exceed ½ of the selected input frequency option when both inputs are used.