721 type dual preset electronic counterDetailed product description：

The 721 dual preset electronic counter is widely used in mechanical equipment such as automatic packaging machinery, batching devices, elevators, mine detection vehicles, cable cutting machines, stamping machines, etc. 5-digit LED display, screw connection, ratio display, multiple programming methods, German industrial standard size.  

1. Ratable display:
The counting pulse input of the 721 type dual preset counter can be converted into a ratio of 0.001~9.999 and displayed through a multiplier. Only display integers, keep the remainder inside, and count values (count pulse * ratio coefficient) that do not exceed the frequency of the maximum count. Output an identical signal source while displaying the ratio.
2. Counting output:
The counting output can be set to an up or down counting mode, and the counting frequency can be set to 5KHz or 30Hz according to the conditions.

3. Counting output:
Depending on the model, the 721 has one or two relay or transistor outputs, and the signal delay time at the output end ranges from 0.05 seconds to steady state, which can be adjusted arbitrarily.

4. Status settings:
The 721 type counter can be set in state through the DIL switch.

Technical parameters of 721 type dual preset electronic counter:

character height	7mm
rated voltage	DC12-24V，AC100-240V
encoder power supply	AC type 24VDC, DC type Vop-2V, maximum current of about 60mA
data saving	10 years
Operating Temperature	-10℃—+50℃
Storage temperature	-20℃—+70℃
Anti interference level	Level 3 (IEC801)
quality	200g
Minimum pulse width	>100us/17ms (according to counter frequency)
Counting frequency	5KHz/30Hz
Counting signal amplitude	High level ≥ 8V Low level ≤ 2V Maximum ± 40V
input resistance	22K
Pulse shape	Square wave of any frequency
reset	Steady state pulse width>15ms
Maximum switch voltage	250VAC/30VDC

Installation dimension diagram of 721 type dual preset electronic counter:

721 type dual preset electronic counter