Counters
CR7421PR
Up Counter
The CR7421PR is a 4-digit, single-contact electronic up counter. Input signals up to 500 Hz and automatic or panel reset are easily selected from the front-panel keypad. The counter and set values can be easily monitored on the 2x4-digit display.
Technical Specifications
Display and Keypad
- Counter Value Display
- 4 digits, 14.2 mm, 7-segment red LED
- OUT LED
- 1 red output LED
- Keypad
- Micro switch
- Set Value Display
- 4 digits, 9.1 mm, 7-segment red LED
Housing
- Dimensions
- G72xY72xD115 mm
- Weight
- Approx. 365 g (with packaging)
- Mounting
- Flush panel mounting with clamps
Electrical Characteristics
- Data Retention
- EEPROM (minimum 10 years)
- Operating Temperature °C
- 0...50 °C
- Power Consumption
- 3VA
- Connection
- 2.5 mm² plug-in terminal block
- Supply Voltage
- 230 Vac +10% -20%, 50/60 Hz; 24 Vac ±10%, 50/60 Hz; 9-30 Vdc / 7-24 Vac ±10% SMPS module
Outputs
- Sensor Supply Output
- 12 Vdc, max. 50 mA (unregulated)
- Control Output
- 1 relay: 230 Vac, 2 A (resistive load), NO+NC; 1 open-collector output (30 Vdc, 100 mA)
- Control Output Duration
- Continuous or adjustable from 0.1 to 9.9 seconds
Inputs
- Counting Input
- 1 input (5 V to 30 V pulse)
- Reset Input
- PNP: positive reset (5 V to 30 V pulse, minimum 2 ms). NPN: reset by connecting the GND terminal to the RESET IN terminal
- Counting Frequency
- 20, 50, 100, 500 Hz, selectable by programming
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