ELECTRONIC REGULATOR DDS5ME-A2

Model Series Definition

• DDS: Digital Direct Signal compressor control series
• 5ME: Fifth-generation microprocessor control hardware platform
• A2: 230 VAC single-phase power supply standard communication version

Technical & Performance Parameters

1. Power Supply Specs
   • Rated Operating Input Voltage: 230 VAC, 50/60 Hz single-phase
   • Maximum Control Cabinet Power Consumption: 15 VA
2. Signal I/O Specs
   • Analog Input Channels: 4 channels 4–20 mA pressure/temperature transmitter signal
   • Digital Input Channels: 8 channels 24 VDC compressor running status switch signals
   • Relay Output Channels: 6 relay contacts (5 A resistive load capacity each) for valve and fan control
   • Control Response Time: < 10 ms (dependent on internal filter configuration)
3. Communication Interface Specs
   • Standard Port: RS485 Modbus RTU
   • Optional Expansion Port: CANopen industrial bus
4. Environmental Specs
   • Operating Temperature Range: -20°C to +70°C
   • EMC Compliance Standard: EN 55032 Class B, EN 61000-6-2 / EN 61000-6-3
   • Protection Class: IP20 panel mounting; IP65 optional sealed external enclosure
5. Mechanical Dimensions & Weight
   • Front Panel Cutout Size: 92 mm × 45 mm
   • Overall Depth Behind Panel: 110 mm
   • Net Weight: 0.12 kg

Material Composition

• Front Operation Panel: Scratch-resistant PMMA transparent display cover, ABS plastic frame
• Internal Control PCB: FR4 industrial anti-vibration circuit board
• Output Drive Components: Electromagnetic isolation relay modules
• Enclosure Sealing Parts: EPDM rubber gaskets for optional IP65 enclosure

Structural Features

• Standard industrial 92×45 mm panel embedded mounting structure
• Front panel: LCD digital parameter display, multi-function operation setting buttons, running/fault LED indicators
• Rear panel: Terminal screw block for AC power supply, sensor analog signals, digital I/O and RS485 communication wiring
• Internal vibration-resistant component welding process adapting to compressor workshop mechanical vibration environment

Working Principle

Core Function Features

1. PID closed-loop automatic air compressor pressure capacity regulation to maintain stable system discharge pressure
2. Multi-point compressor fault detection and lockout protection with numerical fault code display
3. Built-in running data logging function storing 12 months of historical pressure, temperature and runtime records
4. Local front-panel parameter setting and remote Modbus network parameter modification dual operation mode
5. Timed automatic blowdown control for air compressor water separator
6. Adjustable maintenance reminder timer for oil filter, air filter and oil change service intervals

Advantage Highlights

1. All-in-one integrated control eliminates separate pressure switch, temperature protection and data logging auxiliary components
2. Wide temperature operating range adapts to unheated compressor plant workshop environments
3. Standard Modbus RTU communication native compatibility with factory central monitoring SCADA systems
4. Compact panel embedded design saves compressor control cabinet internal space
5. Vibration-resistant hardware design stable under continuous compressor mechanical vibration

Applicable Industries

Installation Requirements

1. Embedded panel mounting with standard 92 mm × 45 mm cabinet cutout, install EPDM sealing gasket between panel and controller housing
2. AC 230 VAC power supply wiring must install external 2 A miniature circuit breaker
3. 4–20 mA analog sensor cables use shielded twisted pair wiring, maximum wiring length 50 m
4. RS485 Modbus bus cable shield layer single-point grounded at central monitoring cabinet

Operation & Maintenance Precautions

1. Calibrate pressure analog input channels every 12 months to eliminate transmitter signal drift error
2. Regularly clean front LCD display dust and oil mist contamination in compressor workshops
3. Do not install adjacent to compressor high-current motor starter contactors without signal isolation barriers
4. Replace internal relay output modules if contact adhesion faults occur after long-term high-frequency switching