Pulse counter DS-72A – 2×6-digit LED display, 2× relays, 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 input function combination options, and flexible output configuration.

Thanks to the dual 6-digit LED display and the ability to set PRESET1 and PRESET2 values, it provides a clear overview of the current and target values. EEPROM memory allows saving settings even after power loss.

Main functions

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

• 2× relay output (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

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

• Function combination options: addition, subtraction, pause, input negation, edge combination

• Adjustable "OFFSET" values

• PRESET1 with absolute/relative value option

• Remembers relay output state and value after power loss

Technical parameters

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

• LED display: 2× 6-digit 7-segment

• Indicator LEDs: 5× (OUT1, OUT2, Prst1, Prst2, 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

Application

• Counting pulses from mechanical and electrical devices

• Production and machine monitoring

• Encoder and mechanical process control

• Industrial applications requiring precise measurements and relay / SSR outputs

Installation and safety

• Panel / distribution cabinet installation

• Use shielded and twisted signal cables, ground the shield

• Keep cables away from sources of electrical noise, switches, and inductive loads

• Protect the device from moisture, vibrations, contamination, and extreme temperatures

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

• Follow safety regulations and use appropriate cables