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

Product description

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

With 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. The EEPROM memory allows settings to be retained even after a power failure.

Main features

• 2× 6-digit LED display to show current value and PRESET

• 2× output relays (SPDT)

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

• Forward/backward 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 option

• Stores status and value of output relay after power failure

Technical parameters

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

• LED indicator: 2× 6-digit 7-segment

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

• Inputs: 2× (5-30 V, max. 7500 Hz)

• Input types: mechanical switch, PNP/NPN inductive sensor, NPN/PNP/total-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 devices

• Production and machine monitoring

• Control of encoders and mechanical processes

• Industrial applications requiring precise measurements and relay/SSR outputs

Installation and safety

• Panel installation / control cabinet mounting

• Use shielded and twisted signal cables, ground the shielding

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

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

• Use a 250 mA / 250 VAC fuse at the power input

• Observe safety regulations and use appropriate cables