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

Product description

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

With two six-digit LED displays and the option 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 power failure.

Main functions

• 2× six-digit LED display for current value and PRESET setting

• 2× output relays (SPDT)

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

• Counting up/down

• Password protection

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

• Calibration constant: from 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

• Preset 1 with absolute/relative value option

• 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

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

• Inputs: 2× (5-30 V, max 7500 Hz)

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

• 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

Usage:

• Counting pulses from mechanical and electrical equipment

• Production and machine monitoring

• Encoder and mechanical process control

• Industrial applications requiring precise measurement and relay/SSR outputs

Installation and safety

• Panel/enclosure mounting

• Use shielded and twisted signal cables, ground the shield

• Keep cables away from electrical noise, disconnectors, and inductive loads

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

• Use a F250 mA/250 VAC fuse at the power input

• Follow safety regulations and use appropriate cables