Overview
The 4 digit electronic counter is designed for counting/length/batch, position control of balers controlled by variable frequency motors, and measuring height, position and angle. Digital counter with up/down input modes can preset count value or length, and simultaneously display the total count, counting length and batch value in real-time.
Features
- Digital counter accuracy: 0.01%, minimum resolution: 0.0001.
- Input/output signals photoelectric isolated, anti-interference ability.
- Input: 4 kinds of input modes, a variety of input signals, various waveform pulses, grating, proximity sensors, photoelectric sensors, contact switches, encoders, etc. (NPN, PNP).
- Output: 8 kinds of output modes to select, up to 3 segments of control output, suitable for various control requirements.
- 4 digit display, has external power supply DC 12V/24V/30mA especially for the sensor.
- Standard RS232 or RS485 MODBUS RTU communication, can be directly connected with computers, PLC or other equipment.
Applications
In the digital system, the counter mainly counts the number of pulses to realize the functions of measurement, counting and control, and also has the function of frequency division. Digital counters are widely used in various fields, including industrial production, digital systems, traffic signal control, paper cutter positioning and elevator positioning and speed regulation.
Specs
| Model |
SISCO-DIGC-FH4 |
| Weight |
250g |
| Accuracy |
0.01% |
| Power supply |
AC 90-260V, or AC/DC 12-30V/DC 24V, power dissipation≤5VA |
| Input signal |
Pulse signal, square wave, sine wave, 5V≤H≤30V, 0≤L≤2V, rising edge trigger, frequency: 0.01~9KHz (square wave) |
| Counting rate |
≤5000 CPS (switching input, software selectable), ≤2000Hz (encoder input) |
| Display counting range |
-1999~9999 |
| Ratio setting range |
0.001~999.9 |
| Input impedance |
≥10KΩ |
| Relay output method |
R, N, C, F, H, L (count), upper and lower limits alarm, capacity AC 250V/3A, DC 30V/3A COSΦ=1 |
| Transmission output |
4-20mA, 0-10V, etc. (range can be set) |
| Insulation resistance |
≥100MΩ (between DC 500V power terminal and external terminal) |
| Dielectric strength |
AC 1500V 1min (between power terminal and external terminal) |
| Environment |
Ambient temperature: 0~50°C, relative humidity: 35~85%RH |
| External power supply |
DC 12V±5%, 50mA max / DC 24V±5%, 30mA max |
| Protection class |
IP65 |
Digital Counter Up/Down Input Modes
Mode A: Up (addition)
INA counts up. INB is GATE function. When INB is high level (or shorted with +12V), INA input is forbidden.
Mode B: Up/down (addition or subtraction)
INA counts up. INB is a count-down control function. When INB is high level, INA turns count-up into count-down.
Mode C: Up/down (addition and subtraction)
INA counts up, INB counts down.
Mode D: Up/down (for encoder)
INA signal leads INB signal (count-up). INA signal lags INB signal (count-down). It is often used for encoder or grating input.
Wiring diagram
FAQs
Q1: What is a digital counter?
Counting is one of the simplest and most basic operations. In digital logic and computing, a counter is the logic circuit that implements this operation. In digital systems, a counter mainly counts the number of pulses for measurement, counting, control, and other functions. It also has a frequency division function. A digital counter consists of a basic counting unit and some control gates. The counting unit consists of a series of various flip-flops with the function of storing information. These flip-flops include RS flip-flops, T flip-flops, D flip-flops and JK flip-flops. Counters are widely used in digital systems. For example, in the controller of an electronic computer, the next instruction is taken out sequentially by counting the instruction address. The operation unit records the number of additions and subtractions when multiplication and division operations are performed. A counter can be used to indicate the operating status of a product. In general, it is mainly used to indicate how many copies of the product have been folded and sorted. Its main indicator lies in the number of bits of the counter, commonly 3 and 4 bits. Obviously, a 3-digit counter can display up to 999 and a 4-digit counter can display up to 9999.
Q2: How to choose a digital counter?
- The choice of the built-in crystal oscillator.
- The resolution of the digital counter.
- Large screen touch design.
- The counter has more measurement functions.
- Internal crystal oscillator calibration function.
- The communication interface of the counter should be as many as possible.
- Wide measuring range
Q3: Types of counters
- According to whether the flip-flops in the counter are flipped at the same time, the counter can be divided into two types: synchronous counter and asynchronous counter.
- According to the increase and decrease of numbers in the counting process, the counters can be divided into addition counters, subtraction counters, and reversible counters. It is an up counter that keeps increasing with the clock signal, and a down counter that keeps decreasing. A counter that can be incremented or decremented is called a reversible counter.
The most commonly used is the first one because it allows people to know at a glance what triggering method this counter is so that designers can design circuits.
Tips: Digital counter application in positioning control
The paper cutter is one of the most commonly used pieces of equipment in the printing and packaging industry. The most basic action of a paper cutter is to send the material to be cut to the designated location and then cut it. Using the high-speed counting function of the counter in the PLC positioning system and combining the multi-speed function of VFD can achieve positioning control, and using HMI can perform cutting parameter setting and some manual actions. This control system can well solve the phenomenon the positioning inaccuracy, the cutting action is disordered, and normal production cannot be performed, which are caused by the aging of the SCM system after use for a period of time.
Warranty
Thank you for buying industrial test and measurement equipment on sisco.com, all products sold by sisco and the partner cover a 12 months warranty, effective from the date of receiving the products.
What is covered?
sisco is responsible for providing free spare parts, and free technical support to assist the customer to repair the defective products until the problem is solved.
What is not covered?
- Product purchased from anyone other than a sisco store or a sisco authorized reseller.
- Expendable parts.
- Routine cleaning or normal cosmetic and mechanical wear.
- Damage from misuse, abuse or neglect.
- Damage from use of parts other than sisco approved.
- Damage from use outside the product’s usage or storage parameters.
- Damage from use of parts not sold by sisco.
- Damage from modification or incorporation into other products.
- Damage from repair or replacement of warranted parts by a service provider other than a sisco authorized service provider.
- Damage caused by the application environment not meeting the product usage requirements and the failure to perform preventive maintenance.
