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- GE
- IC693CHS391K
- 10-Slot Modular CPU Baseplate
- USA
- 443 × 130 × 142 mm
- 0.95 kg
- Xiamen, China
- New & In Stock
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Product Overview
The GE IC693CHS391K Series 90-30 10-Slot Modular CPU Baseplate is the main modular baseplate used to build a Series 90-30 PLC rack around a separate CPU module. Unlike an embedded CPU baseplate, the modular arrangement allows the CPU to be selected independently and leaves the remaining rack positions available for I/O and option modules.
The baseplate provides a dedicated power supply position, one CPU or special-option position, and nine additional positions for I/O or compatible option modules. This arrangement makes it suitable for Series 90-30 control systems that require a larger concentration of I/O in the main CPU rack.
A 25-pin expansion connector at the right side of the baseplate allows the rack to interface with compatible expansion or remote baseplates. The modular architecture therefore supports systems that need additional I/O beyond the ten positions available on the CPU baseplate itself.
The IC693CHS391K is a rack-level component rather than a controller or I/O device. The CPU, power supply, I/O modules, and option modules installed on the baseplate determine the actual control functions of the completed Series 90-30 system.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Modular CPU Baseplate |
| Product Series | Series 90-30 |
| Model | IC693CHS391K |
| Number of Slots | 10 |
| CPU Position | Slot 1 |
| I/O Positions | Slots 2–10 |
| Power Supply Position | Dedicated left-side position |
| Baseplate Type | Main CPU Baseplate |
| Expansion Interface | 25-pin D-type Expansion Connector |
| Application | Series 90-30 PLC Main Rack |
| Dimensions | 443 × 130 × 142 mm |
| Weight | 0.95 kg |
Product Features
- 10-slot modular CPU baseplate for Series 90-30 PLC systems.
- Provides one dedicated CPU position and nine I/O or option-module positions.
- Uses a separate power supply module installed at the left side of the baseplate.
- Allows the CPU to be selected independently from the baseplate.
- Supports compatible Series 90-30 I/O and option modules in slots 2 through 10.
- Includes a 25-pin expansion interface for connecting additional baseplates.
- Serves as the main rack in a modular Series 90-30 PLC architecture.
- Suitable for control systems requiring more I/O positions than the 5-slot modular CPU baseplate.
Working Principle
The IC693CHS391K provides the physical and electrical backplane through which the CPU, power supply, I/O modules, and compatible option modules operate as a Series 90-30 PLC system.
Power Supply → IC693CHS391K Backplane → CPU / I/O Modules → Field Devices
The rack operates as follows:
- The power supply module is installed in the dedicated left-side position.
- The CPU is installed in Slot 1, which is specifically assigned to the CPU or certain compatible special-option modules.
- Slots 2 through 10 accept compatible I/O or option modules.
- The baseplate distributes the internal backplane connections required by the installed modules.
- The CPU exchanges data with the installed I/O and option modules through the backplane.
- The right-side expansion connector can connect the CPU rack to compatible expansion or remote baseplates when additional I/O capacity is required.
Only one modular CPU baseplate is used as the CPU rack in a Series 90-30 system. Additional baseplates in a multi-rack arrangement are configured as expansion or remote baseplates.
Role in a Series 90-30 PLC Control Architecture
The IC693CHS391K forms the physical foundation of the Series 90-30 main CPU rack, connecting the controller, power supply, I/O modules, and optional expansion infrastructure.
Power Supply → IC693CHS391K → CPU → I/O Modules → Field Devices
| System Element | Typical Function |
|---|---|
| Power Supply Module | Provides operating power for the PLC rack |
| IC693CHS391K | Provides the main modular backplane and module positions |
| Series 90-30 CPU | Executes the PLC application program |
| Digital I/O Modules | Interface with discrete field signals |
| Analog I/O Modules | Acquire and generate continuous process signals |
| Communication Modules | Connect the PLC with external control networks |
| Expansion Baseplate | Adds additional I/O positions to the system |
| Remote Baseplate | Extends I/O to a remote installation |
| Field Devices | Provide inputs and receive control outputs |
| Programming / Engineering System | Used to configure and maintain the PLC application |
Industrial Applications
| Application | Typical Use |
|---|---|
| Machine Automation | Central rack for PLC CPU and machine I/O |
| Manufacturing Lines | Concentrating digital, analog, and communication modules in one rack |
| Material Handling | Conveyor, motor, sensor, and actuator control |
| Packaging Machinery | Coordinating discrete and analog machine functions |
| Water and Wastewater | Main PLC rack for pumps, valves, and instrumentation |
| Process Equipment | Acquiring field measurements and controlling process devices |
| Utility Systems | Centralized PLC control for distributed equipment |
| Legacy Control Systems | Replacement of damaged or aging Series 90-30 baseplates |
| Multi-Rack PLC Systems | Main CPU rack connected to expansion or remote I/O racks |
Installation and Maintenance
- Confirm that the IC693CHS391K is the required modular CPU baseplate for the Series 90-30 system.
- Verify the CPU type and I/O modules before determining the rack configuration.
- Install the compatible power supply in the dedicated left-side position.
- Install the CPU or permitted special-option module in Slot 1.
- Use slots 2 through 10 for compatible I/O or option modules.
- Ensure each module is fully seated and secured before applying power.
- Check the backplane connectors for contamination, bent contacts, or physical damage.
- When using expansion or remote racks, verify the correct expansion cable and baseplate type.
- Inspect the 25-pin expansion connector when troubleshooting communication with additional racks.
- Confirm that the rack is properly mounted and mechanically supported inside the control cabinet.
- Check the power supply and backplane when several installed modules become unavailable simultaneously.
- If only one module fails, inspect that module’s seating and associated wiring before replacing the baseplate.
- During maintenance, avoid unnecessary removal of the power supply because controller memory retention can be affected by extended power removal depending on the system configuration.
- After replacing the baseplate, verify CPU recognition, I/O configuration, expansion-rack communication, and application operation.
A failure affecting multiple modules at once is more likely to involve the power supply, backplane, rack connections, or system configuration than several independent I/O modules failing simultaneously. Checking the rack-level architecture first can shorten troubleshooting time.
Related Components
| Component | Function |
|---|---|
| Series 90-30 CPU Module | Executes the PLC control program |
| Series 90-30 Power Supply | Supplies operating power to the baseplate and installed modules |
| Digital I/O Modules | Interface with switches, sensors, relays, and actuators |
| Analog I/O Modules | Handle continuous process signals |
| Communication Modules | Provide external network and device communication |
| IC693CHS392 | Provides additional 10-slot expansion capacity |
| IC693CHS393 | Provides 10-slot remote I/O capacity |
| Expansion Cable | Connects compatible additional baseplates |
| Terminal Blocks | Provide field wiring connections |
| Programming Device | Used for PLC configuration, programming, and diagnostics |
Recommended Related Models
| Model / Series | Product Type | Typical Application |
|---|---|---|
| IC693CHS391K | Series 90-30 Modular CPU Baseplate | 10-slot main CPU rack |
| IC693CHS397 | Series 90-30 Modular CPU Baseplate | 5-slot main CPU rack |
| IC693CHS392 | Series 90-30 Expansion Baseplate | 10-slot local expansion rack |
| IC693CHS393 | Series 90-30 Remote Baseplate | 10-slot remote I/O rack |
| IC693CHS398 | Series 90-30 Expansion Baseplate | 5-slot expansion rack |
| IC693CHS399 | Series 90-30 Remote Baseplate | 5-slot remote I/O rack |
| IC693CPU331 | Series 90-30 CPU Module | Modular CPU control |
| IC693CPU340 | Series 90-30 CPU Module | Higher-capacity PLC control |
| IC693CPU341 | Series 90-30 CPU Module | Advanced Series 90-30 control |
Key Advantages
- Ten-slot main rack capacity accommodates a CPU plus nine I/O or option modules.
- Modular CPU architecture allows the controller to be selected separately from the baseplate.
- Dedicated power supply and CPU positions simplify rack organization.
- Provides a practical foundation for larger Series 90-30 control systems.
- Supports expansion and remote baseplate connections through the rack’s expansion interface.
- Compatible with a broad range of Series 90-30 I/O and communication modules.
- Useful for maintenance and replacement of existing Series 90-30 installations without changing the entire rack architecture.
Technical FAQs
How are the ten slots on the IC693CHS391K allocated?
The rack has a dedicated power supply position that is not included in the numbered slot count. Slot 1 is assigned to the CPU or certain compatible special-option modules, while slots 2 through 10 are available for compatible I/O or option modules.
Can the IC693CHS391K be used as an expansion baseplate?
No. The IC693CHS391K is the modular CPU baseplate and serves as the main CPU rack. Series 90-30 systems requiring additional racks use dedicated expansion or remote baseplates such as the IC693CHS392 or IC693CHS393.
What happens if several I/O modules on the baseplate stop communicating?
Check the power supply, CPU status, module seating, and backplane connections first. If an entire group of modules becomes unavailable at the same time, a rack-level power or backplane issue is more likely than simultaneous independent failures of multiple I/O modules.
Can the CPU be replaced without changing the IC693CHS391K baseplate?
Yes. One of the characteristics of the modular CPU architecture is that the CPU is a separate module installed in Slot 1. A compatible CPU can therefore be replaced or changed while retaining the baseplate, provided the replacement CPU is supported by the existing system configuration and application.