Bonfiglioli CM-CAN Communication Module
Product Overview
The Bonfiglioli CM-CAN Communication Module with references 179-675 140 and 149-650-034 is a CAN interface for compatible Vectron drive systems. It allows the drive to exchange control and status data with a machine controller over a CAN network. The module is intended for professional installation in the drive option slot according to the product documentation.
The module is used in automation, material handling, mobile machinery, and general industrial systems. Correct integration depends on network planning, drive configuration, controller settings, and cable installation. The module should be selected as part of the complete drive and control system.
Design and Function
The CM-CAN module provides a network interface between the drive control section and the CAN master. It handles data exchange for commands, references, status, and diagnostics. The exact protocol and data mapping must be confirmed from the product documentation. The module must be installed in the correct slot and configured with the appropriate drive firmware.
The module does not replace the drive control functions. It provides a data channel for machine integration. The master controller uses process data to exchange cyclic information. Configuration tools are used to set node addresses, process data mapping, and drive parameters.
Installation and Wiring
Installation begins with isolating the drive and following electrostatic discharge precautions. The module should be inserted into the correct option slot and secured. Cables should be connected to the correct ports. The drive should be powered and checked for module recognition. Network settings should be configured.
Cables should be rated for the environment and installed with proper strain relief. Shielded cables and correct grounding help reduce interference. The network should be kept separate from high power cables where possible. Diagnostic access should be planned for maintenance.
Configuration and Commissioning
Commissioning should include checking communication status, node identification, and cyclic data exchange. The drive should be controlled at low speed without load where possible. Rotation direction, reference scaling, and status feedback should be verified. Fault handling should be tested.
The controller program should handle start, stop, reset, and fault responses correctly. Safety functions must be implemented according to the machine safety system and not rely only on network commands. The network should be tested before full machine operation.
Operation and Monitoring
During operation, the module enables the controller to send commands and receive drive status. Operators and maintenance personnel should monitor network diagnostics and drive fault codes. Communication errors can result from cable damage, incorrect configuration, or interference.
The module indicators and drive diagnostics help locate communication problems. The controller should display relevant fault information. Network load and cycle time should remain within design limits. If machine equipment is added or changed, the network configuration should be reviewed.
Protection and Reliability
Reliability depends on correct installation, cable routing, grounding, and configuration. The module should be protected from electrostatic discharge during handling. Cables should not be bent beyond their limits or exposed to abrasion. Connectors should be fully engaged.
The network should be designed so that a communication fault leads to a safe machine state. The drive fault response should be configured appropriately. The controller program should handle device loss and restart clearly. Service work should be performed by qualified personnel.
Maintenance and Service
Maintenance should include periodic inspection of cables, connectors, indicators, and drive diagnostics. Dust should be removed from the enclosure and ventilation paths. Cable shields and grounds should be checked. Configuration backups should be kept for the drive and controller.
Before service, the drive must be isolated and the direct current link allowed to discharge. The module should be handled with electrostatic protection. After replacement, network settings and process data mapping should be verified.
Integration and Selection Summary
The CM-CAN module can be integrated into automation systems that use compatible Vectron drives. It is suitable for machines requiring remote control, parameter access, and diagnostic data over CAN.
Selection should confirm the model CM-CAN, references 179-675 140 and 149-650-034, compatible drive series, firmware requirements, network topology, and required process data. The designer should verify compatibility with the controller and machine architecture.
