Digital pulse counter for DIN-rail CD4-2L/220V

N=(1 - 9999), Us=220Vac, Output 4A/220V, 95x49x113mm

Price 54.08 EUR no VAT

The CD4-2L/220V digital pulse counter for DIN-rail mounting is a microprocessor device with a 4-digit display. It counts up to 9999 and has one output relay. The counter can be started in three ways: a) by turning on the supply voltage; b) by pressing a button of the front panel of the counter; c) by using an external button or sensor connected to the counter. Programmatically can be set various parameters defining the operation of the counter. The device has an energy-independent memory.


The CD4-2L digital pulse counter is designed for for M35 DIN-rail mounting. It is a compact microprocessor device that serves to count electrical pulses. The number of pulses received at its input is visualized on a four-digit display. Except counting the impulses, its main function of the counter is to switch the electric circuit, in which it is turned on when a set value "N" is reached. The pulse counter is widely used in automation of production, technological and other processes.


Digital indication, LED - red 4 digits, h=14mm (height)
Counting range, N 1 … 9999 (pulses)
Inner divisor, d 1 … 99
Supply voltage, Us 220 VAC ±10%
Power consumption, P 4 W (16 mA)
Output - Relay (NO+NC) 4A / 220VAC
Maximum counting frequency, Fmax 500 Hz (5 kHz option)
Operating temperature, Tamb -20º...+50º C
Degree of protection IP40
Joining Terminal block
Overall dimensions 86x70x58 mm, DIN35-70

Programmable parameters

Limit value of pulses,  N 1 ÷ 9999
Inner divisor,  d 01 ÷ 99
Time between two adjacent pulses (00 = infinity),  t (sec) 00 ÷ 99  (99=9,9sec)
Active input front (high / low),  In Lo / Hi
Operating mode (increment / decrement) Inc / dEc
Interruption of the supply voltage,  Us :
      - after an interruption, the counting continues from the current data Cont
      - after an interruption, the counting automatically starts from the beginning Full
      - after an interruption, a stop mode of the current data is established Ucc
      - after an interruption, the counter is reset Goto
Automatic start when the power is turned on for the first time no / Auto
Initial state of the output relay (Status),  St ⌈‾⌉  /  ⌉_⌈

Schemes of connection

Scheme of connection of NPN sensor to CD4-2L counter


Connecting an NPN sensor to the counter input

Scheme of connection of a button switch to a CD4-2L counter


Connecting switch K1 to the counter input

PNP sensor connection diagram

Scheme of connection of PNP sensor to the DIN rail mounting controller


Connect a PNP sensor to the counter input by adding a 2K / 0.5W resistor

Overall dimensions (mm)

Overall dimensions of the DIN-70 housing of the controller for rail mounting

Short description

The CD4-2L digital pulse counter is an electronic device used as a means of automating production processes. It is designed for mounting on DIN rail M35 and serves for switching direct current and alternating current electrical circuits.

Typical parameters of pulse counter CD4-2L

CD4-2L / 12-24V11÷31VDC / 11÷27VAC2W (85mA)
CD4-2L / 220V220VAC ±10%4W (16mA)