IC693BEM340 1 IC693BEM340 3 IC693BEM340 4 IC693BEM340 2

The GE IC693BEM340 is a high-density Bus Expansion Module (BEM) designed for GE Series 90-30 PLC systems, offering robust and flexible I/O expansion for large-scale automation applications. This module enables engineers to integrate additional I/O, analog, or communication modules without compromising system stability or performance.

Perfect for industrial environments that demand scalable and reliable PLC architectures, the IC693BEM340 ensures seamless communication with the main CPU and allows for efficient modular system growth.

Technical Specifications

Specification	Details
Product Type	Bus Expansion Module (BEM)
PLC Platform	GE Fanuc Series 90-30
Function	High-density I/O rack expansion
Supported Modules	Digital, analog, and communication modules
Communication Interface	Backplane bus connection to main CPU
Maximum Expansion	Supports up to 16 additional I/O modules per BEM340
Operating Temperature	0°C to +60°C
Storage Temperature	-20°C to +70°C
Dimensions (H × W × D)	102 × 140 × 120 mm
Weight	Approx. 0.85 kg

Recommended Related Models

The IC693BEM340 works efficiently with:

IC693CPU350 / IC693CPU374 – Main CPUs managing expanded racks
IC693CHS391 / IC693CHS397 – Baseplates supporting high-density module integration
IC693PWR330 – Reliable power supply for extended racks
IC693ALG / IC693ADC / IC693ACC series – Compatible analog and digital modules

This configuration ensures that high-density expansion is performed reliably without compromising CPU performance.

Popular GE PLC Models

The IC693BEM340 is commonly paired with:

IC693CPU350
IC693CPU363
IC693CPU374
IC693MDL740
IC693CHS391 / IC693CHS397

It is ideal for applications requiring large-scale I/O integration and advanced system scalability.

Applications

The GE IC693BEM340 is suited for applications requiring high-density and modular I/O expansion:

Large-scale process control with multiple distributed racks
Multi-actuator, multi-valve, and multi-sensor systems in manufacturing
Laboratory and test automation with expanded I/O requirements
Retrofitting older Series 90-30 PLC systems to support increased module counts
Industrial environments where scalable and reliable automation is critical

It provides efficient, stable, and scalable control in demanding applications.

Advantages

High-Density Expansion – Supports up to 16 additional modules per BEM
Flexible Module Integration – Works with digital, analog, and communication modules
Seamless CPU Communication – Fully compatible with Series 90-30 CPUs
Compact Footprint for Capacity – Maximizes rack space efficiency despite high module density
Cost-Effective System Growth – Eliminates need for extra CPUs while expanding I/O

The IC693BEM340 enables engineers to scale PLC systems efficiently in complex automation environments.

Technical FAQs

What is the main function of IC693BEM340?
To expand I/O racks with high-density support in Series 90-30 PLC systems.
How many modules can a BEM340 support?
Up to 16 additional I/O modules per BEM.
Which CPUs are compatible?
Series 90-30 CPUs, including IC693CPU350, 363, and 374.
What types of modules can be connected?
Digital, analog, and communication modules compatible with 90-30 racks.
Does it require a separate power supply?
No, it draws power from the main rack or dedicated 90-30 supply.
What is the operating temperature range?
0°C to +60°C.
Can it be used for remote or distributed racks?
Yes, as long as backplane bus communication is maintained.
Does it impact CPU scan time?
Minimal effect when properly configured.
Is it suitable for retrofitting older systems?
Yes, especially for projects requiring more I/O without adding CPUs.
Why choose IC693BEM340 over BEM320/BEM331?
It provides higher module density (up to 16 modules) for large-scale automation systems.