ADLINK PXES-2596 Gen3 Chassis Installation and Maintenance Guide

2.4 Security and Certification

Safety standards: EN 61010-1, EN 61010-2-201; EMC：EN 55011 Class A、EN 61326-1； CE certification complies with the Low Voltage Directive and EMC Directive.

Backplane architecture and PCIe topology

The PXES-2596 backplane adopts PCIe Gen3 switching chip, and the system slot supports two x8 links (a total of x16 Gen3), which are routed to various peripheral slots through the switching chip. The system slot can accommodate system controllers with a maximum width of 4 slots (such as ADLINK's recommended PXIe-3987). The controller expansion slot is located on the left side of the system slot and does not occupy peripheral slots. 8 mixed peripheral slots (Slot 2~9) independently provide x4 Gen3 links, each with 4 GB/s bandwidth and not shared with each other. For the 2596E model, the three additional peripheral slots (usually located on the right) are also x4 Gen3 links, but only support PXI Express/CompactPCI Express modules (do not support hybrid PXI-1). All peripheral slots share a trigger bus (8-wire) and a local bus (single wire PXI-LBL6/PXI-LBR6), supporting module synchronization and analog/digital signal transmission.

Key points of installation and heat dissipation engineering

4.1 Unboxing and Attachment Confirmation

The standard packaging includes a chassis, power cords, filler panel kit (1 3-channel panel and 18 1-channel panels), and rack mounting kit (optional, part number 91-95115-0010, compatible with PXES-2590). Check for transportation damage and contact the dealer immediately if there are any missing items.

4.2 Heat dissipation design and gap requirements

The chassis adopts a bottom air intake and rear exhaust duct, with dual rear fans sucking in cold air from the bottom, flowing through all modules, and then discharged from the rear grille. This design can effectively avoid inhaling hot air discharged from adjacent equipment during rack installation. Key gap:

Leave at least 1U (44.5mm) clearance below the bottom air inlet;

Leave at least 76.2 mm (3 inches) of space behind the rear air outlet;

All unoccupied slots must be equipped with filling panels, otherwise it will disrupt the balance of wind pressure and cause local overheating.

4.3 Multi level intelligent fan control strategy (core features)

Unlike previous cases where the target temperature could be set through software, PXES-2596 adopts fixed graded temperature control without user intervention, and is fully driven automatically by the backplane temperature sensor. The fan control strategy is shown in the following table:

Stage temperature threshold (rising edge) corresponds to PWM duty cycle returning to the previous stage temperature threshold (falling edge)

1>55 ° C 30% N/A (lowest level after startup)

2 >65 °C 40% <51 °C

3 >73 °C 60% <61 °C

4 >79 °C 80% <69 °C

5 N/A (reaching the highest level) 100%<75 ° C

When any reading from multiple temperature sensors on the backplane exceeds the threshold, the fan speed gradually increases; When the temperature drops back to the corresponding "return" threshold, the speed drops back to the previous level. This hysteresis design avoids frequent oscillations of the fan near the critical temperature, ensuring temperature control stability while reducing noise. The measured noise level is not specified in the manual, but according to the fan specifications, it should be significantly lower in automatic mode than in full speed mode.

4.4 Hardware installation steps

System controller installation (Slot 1):

Ensure that the CPU, memory, and storage on the controller are installed correctly;

Press the module to eject the latch, push the module along the upper and lower guide rails until the latch is reset;

Tighten the fixing screws on the front panel and connect external devices such as the monitor and keyboard.

Peripheral module installation (Slot 2-9):

Select an idle slot and press the module latch;

Push smoothly along the guide rail to ensure that the backplane connector is fully engaged;

Lift the latch and tighten the front panel screws; Repeat the operation to install all modules.

Rack installation:

An optional rack mounting kit is available. First remove the right handle and the four rubber feet on the left, fix the left and right mounting brackets on both sides of the chassis with M4 screws (the bracket position can be adjusted forward and backward along the screw holes), and then use eight rack screws (not included) to fix the chassis in the rack.

Power budget and power on process

5.1 Power Budget Calculation

Calculate the total power consumption of the system controller and all peripheral modules to ensure that it does not exceed 500W. The manual recommends reserving a certain margin and paying attention to the current limits of the+12V and+5V rails. If using the 12 slot version, the total power budget is still 500W, and more careful allocation is needed.

5.2 Power on and power-off operations

PXES-2596 is equipped with a universal input power supply and does not require voltage switching. Power on steps:

Insert the power cord into the C13 power inlet at the back of the chassis;

Insert the other end of the power cord into a grounded socket;