GESAS CAN-DCM

Product Brief Introduction

Industrial CANopen field bus communication control module developed by GESAS automation brand, dedicated to digital speed and torque closed-loop control of brushed DC motors, realizes real-time parameter interaction between DC motor driver and upper PLC/IPC host via standard CAN-DCM bus protocol.
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Description

Technical Specifications

  • Bus Communication Protocol: CANopen CAN-DCM dedicated DC motor control sub-protocol
  • CAN Bus Physical Layer Standard: ISO 11898-2 differential CAN bus
  • Supported Baud Rate Options: 125kbps, 250kbps, 500kbps, 1Mbps hardware DIP switch selectable
  • DC Motor Control Output Interface: 0~10V analog speed command output, relay brake control output
  • Power Supply Input: 24V DC ±5% industrial control power supply
  • Operating Temperature Range: -20°C ~ +65°C
  • Node Address Setting: 1~127 CAN bus node ID adjustable via front DIP switch
  • Mounting Standard: 35mm DIN rail modular installation

Functional Features

  1. Fully compliant CAN-DCM DC motor dedicated control protocol, supports speed setting, torque limit, fault reading, position feedback bus command transmission
  2. Real-time upload of DC motor operating parameters: actual speed, armature current, winding temperature, fault code to upper host
  3. Analog voltage signal output matching universal analog DC motor driver command interface
  4. Hardware DIP switch one-time configuration of bus baud rate and node address without configuration software
  5. Built-in bus terminal resistance switch for end-node CAN bus matching impedance
  6. Overvoltage, reverse power supply, CAN bus short-circuit hardware protection circuit

Performance Parameters

  • Bus Real-Time Data Refresh Cycle: Minimum 1ms synchronous data transmission
  • Analog Command Output Linear Error: ±0.08% full scale
  • CAN Bus Maximum Cascading Node Quantity: 127 independent motor control nodes
  • Bus Communication Isolation Strength: 2000V AC galvanic isolation between bus circuit and control circuit
  • Power Consumption: Max 0.8W under full communication load

Material Composition

  • Module Housing: UL94-V0 flame retardant PA66 plastic
  • Core Communication Chip: Industrial grade CANopen protocol controller IC
  • Isolation Component: Miniature signal isolation transformer for CAN bus differential line
  • Wiring Terminals: Spring cage quick wiring copper terminals
  • Heat Dissipation Component: Passive aluminum heat conduction patch on circuit board backside

Structural Characteristics

  1. Ultra-narrow single-channel DIN rail modular structure for multi-node dense cabinet layout
  2. Front panel equipped with bus communication LED indicator, power running LED, fault alarm LED
  3. Separate terminal partitions: left for 24V DC power supply, middle for CAN bus wiring, right for motor control analog output wiring
  4. DIP switch area on front panel for baud rate, node ID and terminal resistance switching
  5. Rear integrated elastic DIN rail buckle for tool-free disassembly replacement

Working Principle

Establishes differential CANopen bus communication link with upper automation controller via CAN-DCM dedicated protocol; receives digital speed, torque limit, brake switch command transmitted by host; converts digital bus command signal into linear 0~10V analog voltage signal to drive external brushed DC motor controller; collects real-time motor operating current and speed feedback signal from DC driver analog feedback port; encapsulates operating data and fault state codes into CAN-DCM protocol data frame and uploads to host controller periodically; built-in isolation transformer eliminates ground loop interference between different equipment nodes on CAN bus network.

Advantage Highlights

  • Specialized CAN-DCM protocol for DC motor control, dedicated data frames reduce bus data transmission load compared with general CANopen modules
  • Hardware DIP switch field configuration without PC software, convenient on-site multi-node network debugging
  • Integrated CAN bus terminal resistance switch avoids external matching resistor wiring
  • Galvanic isolation between bus and control circuit eliminates cross-node ground loop communication failure
  • Ultra-narrow modular design supports centralized multi-DC-motor bus control system layout

Applicable Industries

Logistics conveyor DC motor centralized control, packaging machine brush DC drive axes, battery production line conveying equipment, medical equipment low voltage DC drive systems, small hydraulic valve DC motor adjustment control

Model Series Belonging

GESAS CAN Series CANopen Bus Control Modules; CAN-DCM is DC motor dedicated control communication sub-model

Installation Requirements

  1. Snap onto standard 35mm DIN rail inside closed automation control cabinet
  2. Install CAN bus trunk line with shielded twisted pair cable, only enable terminal resistance on the first and last bus nodes
  3. Separate CAN bus signal wiring from high-current DC motor power wiring with independent cable ducts
  4. Supply stable ripple-free 24V DC control power supply to module power terminals
  5. Ambient installation environment free of oil mist, corrosive gas and conductive metal dust

Operation Precautions

  1. Do not connect CAN-H and CAN-L differential bus lines in reverse polarity, will lead to full bus communication node disconnection
  2. Only activate built-in terminal resistance at bus start and end nodes; middle nodes must switch terminal resistance off
  3. Cut off 24V DC power supply before adjusting DIP switch baud rate and node address parameters
  4. Avoid module operation at ambient temperature above +65°C; communication data loss and signal drift will occur
  5. Regularly inspect CAN bus cable shielding layer grounding integrity to prevent electromagnetic interference communication failure
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