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

Product description

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

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

Main Features

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

• 2× output relays (SPDT)

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

• Count up/down

• 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 combination of functions: addition, subtraction, pause, input negation, edge combination

• Adjustable "OFFSET" values

• PRESET1 with absolute/relative value option

• Remembers the status and value of output relays after power failure

Technical parameters

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

• LED display: 2× 6-digit 7-segment

• LED indication: 5× (OUT1, OUT2, Finger1, Finger2, Batch)

• Inputs: 2× (5-30 V, max. 7500 Hz)

• Input types: mechanical switch, inductive PNP/NPN 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 from mechanical and electrical equipment

• Production and machine monitoring

• Control of encoders and mechanical processes

• Industrial applications requiring precise measurements and relay/SSR outputs

Installation and safety

• Panel/enclosure mounting

• Use shielded and twisted signal cables, ground the shielding

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

• Protect equipment against moisture, vibrations, dirt, and extreme temperatures

• Use a fuse of F250 mA / 250 VAC on the power input.

• Observe the safety instructions and use suitable cables