Delta AX-500SC00-0S AX-5 Safety CPU Module

Delta AX-500SC00-0S AX-5 safety CPU module

The Delta AX-500SC00-0S is the functional safety controller of the AX-5 series. It is a narrow safety CPU module intended to work with an AX-5 standard controller, so that safety logic runs in a dedicated safety processor while the machine program stays in the standard CPU. Seven Star LLC supplies the AX-500SC00-0S in Oman and the GCC as an independent supplier in Muscat.

The part number is a single orderable model, not a range. Delta publishes it as the AX-5 Series Safety CPU, model AX-500SC00-0S. Do not substitute it with a standard CPU such as the AX-5 CPU models, because the two modules play different roles.

AX-500SC00-0S technical specifications

Safety parameters of the AX-500SC00-0S

The manufacturer publishes the following safety figures for the module. They are the numbers a safety engineer needs when calculating the overall safety function of a machine, and they should be copied from the manufacturer document into the project’s safety calculation rather than from this page.

How the AX-500SC00-0S works

The AX-500SC00-0S executes the safety program in its own processor and exchanges safe data with remote safety I/O over EtherCAT using Fail Safe over EtherCAT (FSoE). It can address up to 64 FSoE slaves and 256 safety I/O points. Because the program capacity is only 256 Byte, the module is meant for compact safety logic such as emergency stop chains, guard monitoring and safe stop requests, not for large general-purpose programs.

Delta states that the safety controller and safety I/O modules can be placed directly to the right of an AX-5 standard controller or of a remote EtherCAT coupler, where the EtherCAT master can be one of the AX series motion controllers. The module is programmed in the same DIADesigner-AX environment as the rest of the AX-5 system, so the safety and standard parts of a machine stay in one project.

Where the AX-500SC00-0S fits in the system

Typical architecture is an AX-5 standard CPU such as AX-516EB0MB1T/P, AX-532EB0MB1T/P or AX-564EB0MB1T/P at the head of the station, the safety CPU immediately to its right, and safety I/O modules or a remote EtherCAT coupler beyond it. The manufacturer also states that the safety controller can cooperate with other Delta safety products, such as safety drives and robots, as well as third-party safety devices, so that safety synchronization works across systems.

Selection and ordering checklist for the AX-500SC00-0S

• Confirm that the machine uses an AX-5 standard CPU or an EtherCAT coupler as the neighbouring head module.
• Count safety inputs and outputs and check them against the 256 point limit and the 64 FSoE slave limit.
• Compare the required safety level of each function (SIL 3 / PL e / Category 4) with your risk assessment.
• Confirm the DIADesigner-AX version available to your engineers.
• Order the matching safety I/O modules and terminal accessories in the same enquiry.

Reading the AX-500SC00-0S figures in a safety calculation

Three of the published values are used most often. PFHD of 2.51 E-10 is the probability of dangerous failure per hour that goes into a high-demand or continuous-mode safety function. PFDavg of 2.14 E-5 is the average probability of failure on demand, used for low-demand functions. MTTFd of 99.8 years feeds the ISO 13849-1 calculation together with diagnostic coverage of 99% or more. The module is a Type B subsystem element with hardware fault tolerance of 1, so the remaining devices in the loop (sensors, safety I/O, contactors or drives) must be evaluated separately and added to the result.

Installation, validation and maintenance

The module is only 12 mm wide and weighs 70 g, so panel space is rarely the constraint, but the removable 16-terminal block and the safety wiring deserve a clear labelling scheme. After wiring, perform a documented validation of every safety function: trigger each emergency stop and guard, confirm the safe state, and record the result. Any change to the safety program or the hardware requires re-validation. The proof test interval published by the manufacturer is 20 years or more, but plant procedures may require shorter functional checks.

Keep the safety program and its checksum in the project archive, and keep a spare module of the same part number for critical machines.

Typical applications in Oman and the GCC

Delta lists industrial robotics, woodworking, printing, packaging and electronics assembly. In Oman and the GCC, the AX-500SC00-0S is relevant to OEM machine builders and plants that add guarding and emergency-stop functions to packaging lines, robot cells and assembly stations. Cabinet cooling and dust control remain important in the regional climate.

Information to send with an RFQ

• Part number AX-500SC00-0S and quantity.
• Standard CPU in use (model string) and any EtherCAT coupler.
• Number of safety I/O points and FSoE slaves.
• Target safety level and the standard the machine is certified to.
• Delivery location and required date.

Documents and quotation

Send us the part number and the machine configuration, and we will confirm which documents are available for the AX-500SC00-0S and quote the module together with the matching safety I/O.

Seven Star LLC is an independent supplier in Muscat and does not claim to be an official channel of the manufacturer.