PowerLogic T500 - Retrofit from Saitel DP

[JuanRayo]

This note covers the recommendations and constraints for both:

• Retrofit projects with legacy versions of I/O modules and HU280 CPU.
• Retrofit projects with latest versions of I/O modules and HU280 CPU.
• New projects with HU280 CPU and DIET500 modules.
• Above use cases with external power supplies.

Inputs for this report are the previous studies for:

• Power consumption of the XS280/SM_SER.
• PS280/SM_PS40 performance.
• Viability study of an external power supply to feed a T500 architecture.

The new HU280 CPU has a lot of new functionalities, but with the drawback of the power consumption. This fact makes the need of pay special attention on the specific configuration and its power consumption, to be sure that this one falls in the limit of the backplane specification (35 W max) and, eventually, on the capacity of the power supply.

Retrofit projects with legacy versions of I/O modules

This paragraph applies to projects equipped with the following modules:

• SM_DI32 with part number M520xy0002 (from now on, x, y… means the different module versions based on voltage levels or whatever other parameter).
• SM_DO16R with part number M522xy0002
• SM_DO32T with part number M522xy0002
• SM_SER with part number M512000002
• SM_AI16 with part number M523200002 and revision prior to C0
• SM_AI8AO4 with part number M525200002 and revision prior to C0
• SM_PS with part number M515x20002
• SM_BPX with part number M545x00002
• SM_CHX with part number M546x00002
•  

Projects using the modules related above cannot be upgraded with HU280 modules.

At a minimum, SM_BPX or SM_CHX has to be upgraded to the ones with part numbers M518x00002 or M519x00002.

In addition, even upgrading the chassis or backplane, configurations with a 9-slot backplane or 9-slot chassis cannot be upgraded either, although they can be upgraded if they are using a 4-slot backplane (M518400002) or a M519420002 chassis (chassis with a double 4-slot backplane)

This recommendation applies for both, projects using a SM_PS power supply or an external one.

In addition, if the system is powered with an external power supply, this one, apart from fulfilling the requirements in terms of certifications required for these projects, has to use a 1.5 mm² (AWG 15) wires no longer than 50 cm (20 in) and the power supply has to be configured to deliver 5.65 Vdc in idle state.

Retrofit projects with current versions of I/O modules

 This paragraph applies to projects equipped with the following modules:

• SM_DI32 with part number M58300002
• SM_DO16R with part number M586xy0002
• SM_DO32T with part number M580000002
• SM_SER with part number M581000002
• SM_AI16 with part number M523200002 and revision after C0
• SM_AI8AO4 with part number M525200002 and revision after C0
• SM_PS40 with part number M508x20002
• SM_BPX with part number M518x00002
• SM_CHX with part number M519x00002

Projects using the above modules allow to upgrade with HU280 CPU, but it is necessary to pay attention in several aspects, one of them is the power supply: If the system is powered with an external power supply, this one, apart from fulfilling the requirements in terms of certifications required for these projects, has to use a 1.5 mm² (AWG 15) wires no longer than 50 cm (20 in) and the power supply has to be adjusted to deliver 5.65 Vdc in idle state.

Once covered the topic of the external power supply, the remaining considerations apply for both, systems powered with an external power supply or with a SM_PS40.

Projects with a 4-slot backplane or a chassis with double 4-slot backplane

There are no additional constraints for these projects: They support the upgrade of the SM_CPU886e CPU(s) (replacement) to the new one HU280.

.

Projects with a 9-slot backplane or a 9-slot chassis

Worst-cases scenarios are set-up with HU280 modules and SM_SER because they are the ones with higher power consumption.

The worst-case scenario is the one with:

• An external power supply
• 7 SM_SER
• 2 HU280

The power consumption of this scenario surpasses the maximum power allowed by the backplane, so this is a non-supported use case.

Another demandant scenario is the following:

• 1 SM_PS40 power supply
• 6 SM_SER
• 2 HU280

The power consumption of this scenario surpasses the maximum power allowed by the backplane as well, so this is a non-supported use case.

The next most demandant scenario (in terms of power consumption) is the following:

• 2 SM_PS40 power supply
• 5 SM_SER
• 2 HU280

The power consumption of this scenario falls into the maximum power allowed by the backplane (actually, reaches the maximum power supply), so this is a supported use case.

Whatever other use case allow the replacement of the existing SM_CPU866e by the new HU280.

Those projects equipped with only one SM_CPU866e CPU allow the upgrade to HU280 with no restriction.

New T500 projects

They include projects with HU280 and T500 I/O modules.

Because T500 I/O and Saitel DP I/O modules are the same (T500 I/O modules is just a brand labelling of Saitel DP ones), considerations in previous section (“Retrofit projects with current versions of I/O modules”) apply in fully to the new T500 projects.