Keyence CV-3502P/CV-3000 series visual system

Keyence CV-3502P/CV-3000 series visual system

The product manual for the Keyence CV-3000 series multi camera universal machine vision system (including the CV-3502P high-performance controller) is equipped with a three core processor (RISC CPU+dual DSP), supporting up to 4 cameras to be connected simultaneously. It provides 8 black and white/color cameras (2 million pixels/high speed/ultra small) with a processing speed of 20000 pieces/minute. It is equipped with 16 detection tools and ACE color processing engine, and has features such as digital image transmission, dual buffering, local reading, and million times bending resistant cable. It supports SVGA output USB 2.0、 Ethernet and RS-232C communication are widely used for appearance inspection, size measurement, positioning, counting, and defect determination in the electronics, automotive, food, and pharmaceutical industries.

Product positioning and core configuration

The CV-3000 series is a next-generation multi camera universal digital vision system from Keyence, featuring high-speed, high-precision, and multi camera hybrid access.

Controller models: CV-3502P (high-performance), CV-3002P (standard)

Camera access:

Standard: 2 cameras

After expanding CV-E300: up to 4 units, capable of black and white/color mixing

Processor: RISC CPU+dual DSP (three core parallel)

Camera product line (8 models in total)

Type Pixel Speed Size Model

Million pixel color 2 million standard CV-200C

Million pixel black and white 2 million standard CV-200M

High speed color 320000 double speed standard CV-035C

High speed black and white 320000 double speed standard CV-035M

Ultra small million color 2 million standard with a diameter of 17mm CV-S200C

Ultra small million black and white 2 million standard with a diameter of 17mm CV-S200M

Ultra small high-speed color 320000 double speed with a diameter of 12mm CV-S035C

Ultra small high-speed black and white 320000 double speed with a diameter of 12mm CV-S035M

Core performance indicators

processing speed

Up to 20000 pieces per minute

Single tool processing: 0.5~0.83ms

Image transmission: high-speed camera 16ms, local reading 3ms

Image technology

Digital transmission: no attenuation, higher accuracy

Double buffering: capable of receiving the next frame trigger during processing

Sensitivity adjustable at 81 levels, no need for high-frequency flashlights

RGB independent adjustment enhances low contrast imaging

Color Processing (ACE Engine)

HSB color extraction, close to human eye recognition

Stable extraction of dark and low brightness colors

Point selection+numerical fine-tuning, high repeatability

Testing tools (16 types)

Basic testing

Area, edge position/width/spacing/angle, paired edges

Featured Tools

Stain detection: contrast difference judgment, defect distribution color display

Pattern Sort: 256 types of patterns can be registered

Trend edge: Multi point measurement of diameter and spacing, output maximum/minimum/average

Differential detection: extracting differences from the comparison of good product images

Color detection: HSB numerical judgment, lighting changes remain stable

Advanced features

Continuous capture: up to 32 consecutive shots triggered at once, taking the average to eliminate errors

Conditional branch: Determine whether to execute based on the results of the previous window

Batch movement: Batch offset of windows to simplify changeover

Operation and Display

Operational ease of use

Visual process menu: step-by-step setting from top to bottom

Custom menu: only display commonly used items to prevent accidental operation

Administrator/User Mode: Password Permission Management

display system

SVGA output: 800 × 600, 24 bit color

9 layouts: 1-5 split screens

Zoom: 0.06~16x real-time zoom

Custom display: Free combination of text, numerical values, and graphics

Data and Interface

storage capacity

Internal storage: 1000 sets of programs, 511 images (black and white)

Memory card: Supports 256MB/1GB, storing programs, images, and data

Statistical Function

Store 20000 measurement data

Maximum value, minimum value, average value, 3 σ, yield, NG count

Histogram, trend chart, can be associated to view images

communication interface

Ethernet: 100BASE-TX, high-speed PLC LINK

USB 2.0: High speed transfer of images and parameters

RS-232C: Communication with PLC/PC

I/O: Input 2 points, output 27 points (including flash synchronization)

Machinery and Environment

Power supply: DC24V ± 10%

Power consumption: 1.8A (2 cameras), 2.8A (4 cameras)

Working temperature: 0~50 ℃ (million pixel camera 0~40 ℃)

Bending resistant cable: 1 million bending cycles (R30mm)

Typical applications

Electronics: Pin defects, connector flatness, soldering, printing

Automobiles: crankshaft air holes, tire identification, cylinder body defects, oil seal shortage

Food/Medicine: Capsule differentiation, packaging foreign matter, liquid level, dirt and stains

General: Dimensional measurement, positioning, counting, appearance defects

Key issues

Question 1: How many cameras does CV-3502P support at most? Why emphasize 'digital transmission'?

Answer: CV-3502P with CV-E300 expansion unit can support up to 4 cameras synchronized access. Compared with traditional analog transmission, digital transmission has no signal attenuation, stronger anti-interference ability, and higher image fidelity, which can significantly improve the stability of measurement and detection, especially in long-distance and high noise factory environments.

Question 2: How to achieve the "high speed" of the system? What are the core technologies?

Answer: High speed comes from three core technologies:

Three core processor (RISC CPU+dual DSP) parallel processing

Double buffer memory: capable of receiving the next trigger during processing

Partial image reading: only necessary areas are transmitted, with transmission time reduced to 3ms

The combination of the three achieves a detection capability of 20000 pieces per minute.

Question 3: What scenarios do Pattern Sort and Stain Detection solve respectively?

answer:

Pattern Sort: In response to scenarios where the shape and size of the workpiece fluctuate, 256 templates can be pre registered and automatically matched for classification, solving the problem of unstable traditional template matching.

Stain detection: Targeting surface dirt, scars, color differences, and foreign objects, it determines the distribution of defects through contrast differences and displays them in color, visually presenting small flaws.