GESAS CAN-DPV

Technical Specifications

• Bus Communication Protocol: CANopen CAN-DPV dedicated process variable acquisition sub-protocol
• CAN Bus Physical Layer: ISO 11898-2 differential bus standard
• Selectable Communication Baud Rate: 125kbps, 250kbps, 500kbps, 1Mbps via DIP switch
• Analog Input Channels: 4-channel isolated universal analog input
• Supported Input Signals: 4-20mA two-wire transmitter, 0-10V voltage, PT100 thermal resistance
• Input Channel Isolation Voltage: 2000V AC channel-to-channel galvanic isolation
• Power Supply Input: 24V DC ±5% industrial control power supply
• Operating Temperature Range: -20°C ~ +65°C
• CAN Bus Node ID Adjustable Range: 1 ~ 127

Functional Features

1. Four-channel fully isolated universal analog input compatible with temperature, pressure, flow industrial transmitters
2. CAN-DPV dedicated process variable protocol optimizes analog measurement data frame transmission efficiency
3. Real-time over-range, open-circuit sensor fault diagnosis for each analog input channel, fault code uploaded via bus
4. Front DIP switch configures bus baud rate, node address and built-in bus terminal resistance
5. Independent LED indicator for each analog channel signal status, general bus communication running indicator
6. Built-in anti-surge protection circuit on CAN bus and analog input terminals against field lightning surge interference

Performance Parameters

• Single Channel Analog Conversion Accuracy: ±0.07% full scale
• Channel Data Sampling Refresh Cycle: Minimum 0.5ms per channel synchronous sampling
• Maximum Network Nodes Supported: 127 independent CAN-DPV acquisition modules on single bus trunk
• Channel-to-Channel Crosstalk Error: ≤0.03% full scale
• Module Total Power Consumption: Max 1.0W full four-channel simultaneous sampling load

Material Composition

• Outer Modular Housing: UL94-V0 flame retardant PA66 insulation plastic
• Main Control Chip: Industrial CAN-DPV protocol dedicated microcontroller
• Channel Isolation Components: Independent miniature signal isolation transformers for each analog input channel
• Wiring Terminals: Spring cage fast connection copper conductive terminals
• Surge Protection Devices: TVS transient voltage suppression diodes for bus and analog input ports

Structural Characteristics

1. Standard DIN rail mounted 4-channel analog acquisition modular unit
2. Front panel layout: DIP configuration switches, bus communication LED, four independent channel status LEDs
3. Three independent wiring partition zones: 24V DC power terminal area, CAN bus trunk terminal area, four-channel analog field sensor input terminal area
4. Each analog input channel equipped with independent isolation magnetic component to eliminate inter-channel interference
5. Rear elastic DIN rail buckle realizes tool-free quick disassembly and replacement

Working Principle

Advantage Highlights

• Four-channel fully isolated analog input eliminates cross-channel signal crosstalk and distributed ground loop interference
• Special CAN-DPV process variable protocol reduces bus data overhead compared with general CANopen IO modules
• Independent per-channel fault diagnosis function rapidly locates field transmitter open-circuit, over-range failure
• Hardware DIP switch network configuration without PC software, convenient multi-node field bus system deployment
• Built-in surge protection circuit adapts to outdoor and heavy electromagnetic interference industrial field wiring environment

Applicable Industries

Model Series Belonging

Installation Requirements

1. Mount on standard 35mm DIN rail inside sealed industrial automation control cabinet
2. CAN bus trunk line must use shielded twisted pair communication cable, enable built-in terminal resistance only on bus start and end modules
3. Field sensor analog signal wiring adopt shielded cable, separate routing from high-current power and motor wiring
4. Provide stable 24V DC ripple-free power supply to module power input terminals
5. Maintain minimum 5mm horizontal gap between adjacent CAN bus modules for passive heat dissipation

Operation Precautions

1. Do not reverse CAN-H and CAN-L bus differential line wiring, will cause entire CAN bus network communication interruption
2. Adjust DIP switch baud rate and node address only after cutting off 24V DC module power supply
3. Do not connect AC voltage signal to analog input terminals, will burn internal ADC conversion circuit permanently
4. Ambient operating temperature exceeding +65°C will increase analog measurement drift error
5. Periodically inspect field sensor cable shielding layer grounding to suppress industrial frequency electromagnetic interference