086318-002 PWA Memory Daughter Board

Overview

Place of Origin:	Sweden
Brand Name:	ABB
Model Number:	086318-002
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Quick Detail

Description

The ABB 086318-002 is a memory sub-PCB for the ABB AC500 PLC system. It expands the memory capacity of the AC500 PLC. This allows the PLC to store more data and programs, which is very useful for complex applications. The memory sub-PCB is part of the S-Series memory modules.

Applications

Machine control: Controlling the operation of machines in manufacturing, packaging, and other industries.

Process control: Controlling flow rate, temperature, pressure, or other parameters in processes in the chemical, food, and beverage industries.

Building automation: Controlling the heating, ventilation, air conditioning, and lighting of buildings.

System Role and Downtime Impact

The ABB 086318 series power supplies are foundational to the stable operation of AC 800M control racks. They convert mains AC into regulated 24 VDC for the entire backplane, powering CPUs, communication modules, and I/O cards. In non-redundant configurations, a single 086318-002 failure results in immediate loss of controller function—halting all logic execution and I/O updates. In redundant setups using the 086318-501, a primary supply failure should be seamlessly covered by the backup unit; however, if both units are aged or from degraded inventory, cascading failure is possible. In continuous processes such as steam turbine control, boiler management, or chemical batch systems, such a power fault typically triggers a full process trip. Recovery requires physical replacement and system reboot, with potential for hours of downtime depending on safety interlocks.

Lifecycle Status and Migration Strategy

ABB has formally discontinued the 086318 series as part of the evolution toward newer AC 800M hardware generations (e.g., PM866A with updated power architecture). Official support, including repairs and replacements, is no longer available. The remaining global inventory consists of used or New Old Stock (NOS) units, many of which have already exceeded their designed service life. Continuing to operate with these modules carries significant risk: latent capacitor failures can occur without warning, and untested spares may fail immediately upon installation.

Short-term mitigation strategies include:

Securing at least one fully tested spare per critical rack, verified for stable output under full load.

Engaging specialized vendors for board-level refurbishment, including full capacitor replacement and thermal imaging validation.

Implementing external UPS or line conditioning to reduce input stress on aging supplies.

For long-term sustainability, ABB recommends upgrading to current-generation AC 800M power supplies such as the 086319-001 or 086320-001 series, which feature:

Improved efficiency and thermal performance

Enhanced diagnostics via the 800xA asset portal

Full compatibility with modern PM86x CPUs

FAQ

Q: Is 086318-002 new or refurbished?

A: All our products are original and brand new with a 1-year warranty.

Q: How many days will the 086318-002 arrive in my hands if I place the order now?

A: As soon as we receive the payment, we will ship the product immediately. It usually takes 3–5 days from China to your hands.

Q: Can you ship the 086318-002 to my country?

A: Please don't worry. We can ship the goods worldwide.

Q: What payment method do you use?

A: We usually use T/T (Telegraphic Transfer), and the payment can typically be received within 1–2 days.

Q: Can I contact you by email?

A: You can contact me online to get my email address.