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Help CenterGE IC687BEM713B VersaMax Series Automation Modules
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GE IC687BEM713B VersaMax series automation modules
I. Module Types and Core Functions
The IC687BEM713B is a Bus Expansion Module. Its main function is to connect different communication buses or expand the I/O capability of the PLC system to achieve data transmission between the main controller and the remote I/O module. Its core function is to expand the system architecture and support distributed control scenarios.
Ii. Technical Characteristics
Bus type and communication protocol:
Supports VersaMax I/O bus communication and can be directly connected to VersaMax series CPU modules (such as IC695/IC697 series).
The communication rate is usually 10Mbps, ensuring the real-time performance and stability of data transmission.
Supports hot-swappable function (subject to system configuration permission), facilitating the replacement of modules during maintenance without interrupting system operation.
Expansion capability:
It can connect multiple remote I/O substations, expand the number of input/output channels of the system, and meet the I/O point requirements of large-scale projects.
It usually supports cascading expansion (such as through multiple BEM modules connected in series), extending the communication distance (the specific transmission distance should refer to the manual, generally reaching several hundred meters).
Electrical and mechanical characteristics:
Supply voltage: 24VDC (±10%), with relatively low power consumption (typical value
Installation method: Standard DIN rail installation, supports side-by-side installation with other VersaMax modules, saving control cabinet space.
Operating temperature: 0-60℃, protection grade IP20, suitable for industrial environments inside control cabinets.
Status indication:
The front panel is equipped with LED indicator lights to display POWER (POWER), communication status (COMM), ERROR (ERROR), etc., facilitating real-time monitoring of the module's operation status.
Iii. Application Scenarios
The IC687BEM713B is mainly used in industrial automation scenarios where system architecture needs to be expanded or distributed control needs to be implemented.
Distributed control of large-scale production lines
In large-scale production lines such as automotive manufacturing and electronic assembly, the main controller is located in the central control cabinet and is connected to multiple remote I/O stations through the BEM713B to respectively control equipment at different workstations (such as robotic arms, conveyor belts, detection sensors, etc.), reducing the complexity of cable laying and enhancing system flexibility.
Remote monitoring in process control
In industries such as chemical engineering, petroleum, and power, production site equipment (such as reactors, valves, and pumps) may be distributed in different areas. By deploying remote I/O modules near the equipment through BEM713B, analog signals (such as temperature and pressure) and digital signals are collected and then transmitted to the central PLC via the bus to achieve centralized control.
Building Automation and Energy Management
In intelligent buildings, it is used to connect the I/O modules distributed on each floor, collect the status signals of the air conditioning system, lighting system and security equipment, and transmit them to the central control system to achieve unified monitoring and energy-saving management of building equipment.
Equipment renovation and system upgrade
When the I/O points of the existing PLC system are insufficient or the communication function needs to be expanded, a remote I/O module can be added through BEM713B to avoid replacing the entire control system and reduce the renovation cost.
Iv. Wiring and System Configuration
Wiring method:
Power connection: Connect to a 24VDC power supply. Pay attention to the positive and negative polarities (usually marked "+24V" and "GND").
Bus communication wiring: Connect the bus interface of the main CPU module (such as the VersaMax backplane bus) and the bus interface of the remote I/O module through a dedicated cable. Ensure that the cable shielding layer is grounded to reduce interference.
Grounding requirements: The metal casing of the module must be reliably grounded to enhance the anti-interference capability.
System configuration steps:
In programming software (such as Proficy Machine Edition), add the IC687BEM713B module to the hardware configuration and assign its address (such as station number) in the bus.
Configure the address and module type of the remote I/O substation to ensure that the communication parameters of the main controller and the expansion module are consistent (such as baud rate, data bits, parity bits, etc.).
When writing programs, access the input/output data of the remote I/O module through the bus address to achieve the reading and control of signals.
V. Fault Diagnosis and Maintenance
Common Faults and Solutions:
Communication failure (COMM lamp flashing or going out) :
Check whether the bus cables are loose or damaged and whether the joints are in good contact.
Confirm that the address Settings of the main CPU and BEM713B do not conflict and that the communication parameters (such as baud rate) are consistent.
If multiple modules are cascaded, check whether the cascaded cables are correctly connected and whether the terminal resistors are installed (if necessary).
POWER failure (POWER light not on) :
Check whether the 24VDC power supply is normal and whether the fuse has blown.
Confirm whether the power connection terminals are tightened and whether the polarity is correct.
System ERROR reporting (ERROR light on) :
Reading the module error code through programming software may be due to hardware failure (such as internal circuit damage) or configuration error (such as duplicate addresses), and the module needs to be replaced or reconfigured.
Maintenance suggestions:
Regularly check the tightness of the bus cables and power connection to avoid poor contact caused by vibration.
In dusty or humid environments, it is recommended to use a sealed control cabinet and regularly clean the dust on the module surface.
The spare modules should be stored in a dry environment free of corrosive gases to avoid high or low temperatures affecting their performance.
Vi. Compatibility with other modules
The IC687BEM713B, as a bus expansion module of the VersaMax series, is compatible with the following components:
CPU modules: such as IC695CPU310, IC697CPU780 and other VersaMax series controllers;
I/O modules: VersaMax digital modules (such as IC693MDL645), analog modules (such as IC693ALG222), special function modules (such as high-speed counting modules);
Communication module: Supports connection with other bus protocol modules (such as EtherNet/IP, Modbus) to achieve cross-protocol communication.
Summary
The IC687BEM713B is a key component for achieving distributed control and system expansion in industrial automation systems. It connects remote I/O modules through bus communication, solving the problems of scattered equipment and complex wiring in large-scale projects, and enhancing the scalability and flexibility of the system. For more detailed technical manuals or configuration guides, support can be obtained through GE's official channels or authorized suppliers.
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