DEGSON DF20 Series Remote I/O Modules for Printing Industry
DEGSON DF20 Series Remote I/O Modules for Printing Industry
DEGSON DF20 series remote I/O modules feature multi-protocol compatibility, distributed deployment, high-speed stable transmission and strong anti-interference performance. They realize full-process signal acquisition and precise control on printing presses, significantly boosting the automation level, register accuracy and production stability of printing equipment.
Core Adaptation Advantages of DEGSON DF20 Series for Printing Scenarios
1. Multi-protocol Compatibility for Seamless Connection with Mainstream Printing Control Systems
Supports Profinet-RT, EtherCAT, Modbus TCP/IP, CC-LINK IE Field Basic and EtherNet/IP. It enables direct communication with mainstream PLCs (Siemens, Beckhoff, Mitsubishi, etc.) and native printing press control systems without additional gateways.
2. Distributed Architecture for Minimal Field Wiring
Modules can be dispersedly mounted on each section of the printing press (feeder, printing unit, drying unit, delivery section), close to sensors and actuators. This drastically shortens analog signal cables, eliminates signal interference, optimizes signal quality, and cuts wiring costs & maintenance workload.
3. Diverse I/O Types Covering Full Printing Process Signals
Digital DI/DO
Applied for sheet presence detection, missing sheet detection, double-sheet detection, impression on/off, cylinder control, solenoid valves and safety door interlock switch control.
Analog AI/AO (4–20mA / 0–10V)
Suitable for continuous signal acquisition and closed-loop regulation of ink viscosity, ink fountain roller speed, printing pressure, drying temperature, web tension and register deviation.
High-speed Counter / Pulse Input
Compatible with encoders to realize sheet length counting, color register synchronization and roller speed closed-loop control.
4. Industrial-grade Reliability for Harsh Printing Workshop Environments
• Operating voltage: 24VDC (-15% ~ +20%)
• Wide operating temperature: -25℃ ~ 60℃
• Vibration resistance: 4g; Impact resistance: 15g
• Powerful EMC anti-interference capability, equipped with opto/magnetic isolation, reverse polarity protection and LED diagnostic indicators
• Effectively suppresses signal drift and unexpected downtime during high-speed printing
5. Flexible Expansion for Multi-color Press & Production Line Retrofit
A single adapter supports up to 32 I/O modules with rapid configuration. It facilitates adding extra color groups, installing online inspection units, and interconnection with ERP/MES systems.
Typical Applications of DEGSON DF20 Series on Each Printing Press Section
Feeder & Sheet Transport Section
• DF20 Digital DI Modules: Connect double-sheet detectors, front/lay sensors, paper stack height sensors, suction nozzle position sensors and safety doors to monitor sheet transport status and trigger alarm or emergency stop.
• DF20 Digital DO Modules: Control suction solenoid valves, separating air blowers, transport roller clutch and paper stack lifting motors to achieve stable high-speed sheet feeding.
Printing Unit (Core Control Zone)
• Analog AI Module (DF20-M-4AI): Collect data from ink viscosity gauges, ink fountain potentiometers, printing pressure sensors, fountain solution level sensors and register photoelectric sensors to support closed-loop control of ink-water balance and color registration.
• Analog AO Module: Output control signals to adjust ink fountain motor speed, dampening roller speed and doctor blade pressure, realizing precise ink color regulation and register error compensation within ±0.01mm.
• Digital I/O: Control impression on/off of each color group, cylinder clamping, ink roller clutch and cleaning device startup/shutdown.
Drying & Curing Section
• Analog AI: Connect PT100 thermometers and thermocouples to real-time monitor drying oven temperature, hot air wind speed and UV curing intensity.
• Digital DO: Control heating tubes, fans, UV lamps and air dampers. Cooperate with PLC to maintain constant temperature & humidity, realize energy-saving drying and avoid sheet deformation.
Delivery & Post-processing Section
• Digital DI: Detect sheet counting signals, delivery stack full signals, sheet alignment completion and dusting device status.
• Digital DO: Control delivery stack lifting, alignment cylinders, dusting valves and waste sheet rejection mechanisms.
• High-speed Counter Module: Match encoders for accurate sheet counting, length measurement and defective sheet sorting.
Safety & Auxiliary Systems
• Safety doors, emergency stop buttons and light curtains are connected to DF20 DI modules to implement safety interlock and rapid machine halt.
• Fault Diagnosis: Locate sensor disconnection, actuator failure and communication anomalies quickly via module LED indicators and bus diagnosis, shortening maintenance downtime.
Summary of Application Value of DEGSON DF20 Series
• Higher Register Accuracy: Distributed signal acquisition + high-speed communication reduces signal delay and interference, controlling register error within ±0.01mm.
• Lower Wiring Cost: Over 70% cable saving, more compact control cabinet layout, installation & commissioning cycle cut by 50%.
• Improved Production Stability: Isolation design and strong anti-interference performance reduce unexpected downtime during high-speed printing, lifting OEE by over 10%.
• Flexible Upgrade: Modular expansion supports multi-color press retrofits, online inspection installation and intelligent factory system interconnection.
DEGSON DF20 Series Selection Guide (Common Configurations for Printing Presses)
| Section | Recommended Module Combination |
| Feeder / Delivery | DF20-M-16DI + DF20-M-8DO |
| Printing Unit | DF20-M-4AI + DF20-M-4AO |
| Drying & Temperature Monitoring | DF20-M-4TC (Thermocouple Input) |
| Communication Coupler | DF20-C-PN (Profinet) / DF20-C-EC (EtherCAT) |
