DS-72A pulse counter - 2×6-digit LED display, 2× relay, 2× SSR output

Product description

The DS-72A pulse counter is a professional device designed for precise counting of pulses from mechanical switches, limit switches, PNP/NPN inductive sensors, and incremental encoders. It supports both up and down counting, offers combined input functions, and flexible output configuration.

Thanks to two 6-digit LED displays and the ability to set PRESET1 and PRESET2 values, it provides a clear overview of the count value and target value. EEPROM memory allows settings to be retained even after power failure.

Main features

• 2× 6-digit LED display for showing current value and PRESET.

• 2× output relays (SPDT)

• 2× SSR outputs (NPN, max. 30 V / 100 mA)

• Up/down counting

• Password protection

• Adjustable input frequency: 20, 50, 2500, 7500 Hz

• Calibration constant: 0.00001 to 9.99999

• Selectable decimal point: 0 / 0.0 / 0.00 / 0.000

• Possible function combinations: addition, subtraction, pause, input negation, edge combination

• Adjustable "OFFSET" values

• PRESET1 with absolute/relative value selection

• Remembers output relay state and value after power failure

Technical parameters

• Dimensions / cutout: 72×72×94 mm / 67×67 mm

• LED display: 2× 6-digit 7-segment display

• Display LEDs: 5× (OUT1, OUT2, Finger1, Finger2, Batch)

• Inputs: 2× (5-30 V, max. 7500 Hz)

• Input types: mechanical switch, PNP/NPN inductive sensor, NPN/PNP/totem-pole encoder

• Reset input: PNP, min. 10 ms, 5-30 V

• Relay outputs: 2× SPDT 250 VAC, 2 A (resistive load)

• SSR outputs: 2× NPN, max. 30 V / 100 mA

• Sensor power supply: 12 VDC, max. 50 mA

• Device power supply: 100-240 VAC, 50-60 Hz

• Power consumption: < 8 VA

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

• Altitude: < 2000 m

Application

• Counting pulses of mechanical and electrical devices

• Production and machine monitoring

• Encoder and mechanical process control

• Industrial applications requiring precise measurement and relay/SSR output.

Installation and safety

• Panel/cabinet installation

• Use shielded and twisted signal cables, ground the shield.

• Keep cables away from electrical noise, circuit breakers, and inductive loads.

• Protect devices from moisture, vibration, dirt, and extreme temperatures.

• Use a power supply input with F250 mA / 250 VAC protection.

• Follow safety requirements and use appropriate cables