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D4-450DC-1 Image One
3 year warranty

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  • 4.86 (7)
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  • 4.86 (7)
  • Click a star to rate this product
Produced by Automation Direct, the D4-450DC-1 unit is one of the CPUs for the DL405 series. This unit can accept an optional memory card giving the CPU up to 30.8K memory. It can hold up to 15.3K words of V-memory.



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  • Part Number: D4-450DC-1
  • SKU: D4450DC1AD
  • Manufacturer: Automation Direct
  • Series: DirectLogic 405

D4-450DC-1 Technical Specifications

Part Number D4-450DC-1
Series DL405, DirectLogic 405
Manufacturer Automation Direct
Model Type Central Processing Unit (CPU)
Built-In Memory 7.5K of Flash Memory
Total Memory Allowed 30.8K
RLL Plus Flowchart Style Stages 1024
Number of Built-In Ports Four
Maximum Baud Rate 38.4K

Product Description

D4-450DC-1 is a central processing unit (CPU) module developed by Automation Direct and Koyo. A member of the DirectLogic 405 family, it is capable of interfacing with programmable logic controllers from the same series. A built-in flash memory of 7.5K is available on the device, but additional memory space is available. Operating on DC power, the supply needed to power the module measures at 24 VDC.

A premium CPU module, D4-450DC-1 features a number of communications abilities. Four separate communication ports are featured on the module. Port 0 is a programming port featuring a 15-pin connector. This port can support RS232 inputs with a 9600 baud rate. Port 1 is a general purpose, 25 pin connector port capable of supporting RS232/422 inputs. Baud rates for Port 1 are user selectable using the programming software. Port 2 is a phone jack used for programming purposes. This RS232 input has a selectable baud rate of up to 38.4Kb. The final port is another general purpose port, capable of inputting RS232/422/485 connections. Like Port 2, baud rates for Port 3 are user selectable with the proper software. CPU scans from the module can be altered, depending on user need. Three scanning systems are featured on the device. These include variable, limited, and fixed scan rates. Six CPU status indicators and a CPU keyswitch complete the front plate of the module.

One of the features of the D4-450DC-1 is the CPUs ability to process up to sixteen PID loops directly on the unit. Various control modes can be selected on the unit; those control modes are manual, automatic, and cascade control. The model also supports a variety of alarms to aid in designating what faults or errors could be occurring. 

Frequently Asked Questions about D4-450DC-1

What is the D4-450DC-1?

The D4-450DC-1 module is one of the central processing units (CPUs) manufactured by Automation Direct for the DirectLogic 405 family. This module has built-in ports for extra convenience and is used for a variety of programming functions. It can also process a wide variety of PID loops directly on the CPU without needing an additional unit. 

What are the types of scans that the D4-450DC-1 module performs?

There are three types of scans that the D4-450DC-1 can perform. The three scan types are fixed, limited, and varied. Each of these scans has its own functions; for example, the fixed scan is used if the scan finishes before the set time, and idle time will be added to make sure there is a fixed scan period. If the scan potentially exceeds the set time, the scan will be extended to make sure all of the instructions are executed properly. An overrun scan condition will also be reported. 

Reviews For D4-450DC-1

Internal Review

The D4-450DC-1 has an extensive amount of V-memory, allowing all of the loop operation parameters because it allows easy access to the operator interfaces. This model is also an excellent CPU to purchase because it has an array of features and is cost-efficient. - AX Control Tech

Repair Services For D4-450DC-1

Type Lead Time Price Action
Repair Service 1-2 weeks $228

Our highly skilled technicians can repair your D4-450DC-1. All of our repairs come with a 3 Year AX Control Warranty. Please contact us for additional information about our repair process. To receive the repair pricing and lead time listed above please process your repair order via our website. The following repair options may be available upon request:

  • 48-72hr Rush Repair
  • Detailed Repair Reports
  • AX Control Certificate of Warranty

AX Control Warranty Info

All products we sell are backed by our unparalleled warranty. A warranty certificate will be provided with your order upon request.
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