I. Functions and Technical Advantages

1. Core Functions

• Clear Identification of I/O Terminals: Compatible with the terminal layout of AC500 series I/O modules, it can be directly snapped above the terminals. It is used to mark the signal type, channel number, corresponding equipment or functional purpose of each terminal, realizing the standardization and normalization of terminal identification, and facilitating operators to quickly identify.
• Convenient Marking Writing: The surface of the label strip is flat and smooth, and special marking pens can be used to write identification content. The handwriting is clear and not easy to fall off. At the same time, it supports repeated wiping and modification (compatible with erasable marking pens), adapting to the identification update needs after on-site wiring adjustment.
• Precise Snap-on Positioning: Strictly matching the size and terminal spacing of AC500 series I/O modules, the snap-on structure is firm, not easy to fall off or shift. After installation, it does not affect the terminal wiring operation, nor does it occupy additional installation space, keeping the module surface clean.
• Bulk Supply: Each package contains 10 label strips, meeting the batch identification needs of multiple I/O modules in small and medium-sized projects, reducing procurement frequency, lowering inventory management costs, and adapting to the general identification needs of various I/O modules in the AC500 series.

2. Key Advantages

• Industrial-grade Durability: The housing is made of flame-retardant engineering plastic, which has good mechanical strength and anti-aging performance, adapting to the installation environment in industrial control cabinets, withstanding temperature fluctuations, dust and other industrial scene interference, and not easy to deform or embrittle.
• Genuine Compatibility: Designed and manufactured by ABB, it is 100% compatible with all I/O modules of the AC500 series, with precise dimensions and close fit. It avoids hidden dangers such as loose snap-on and terminal blocking caused by size deviation of third-party label strips, ensuring the normal function of identification.
• Easy Installation and Replacement: Adopting a snap-on design, it can be directly manually snapped above the I/O module terminals without tools, and the installation is fast; when replacing, it can be removed by gently prying, the operation is simple, and it is convenient for disassembly during later identification update or module maintenance.
• Clear Visual Identification: Adopting a pure white design, it forms a distinct contrast with the terminals and housing of the I/O module. The written identification handwriting is clear and eye-catching, even in the control cabinet with low light, the terminal purpose can be quickly identified, improving operation and maintenance efficiency and reducing wiring errors.

II. Technical Specifications

III. Application Areas

• Factory Automation: In the AC500 PLC control cabinets of production lines such as automotive manufacturing, electronic processing, and food and beverage, the terminal identification of various I/O modules (digital input/output, analog input/output) facilitates quick identification of signal channels during production line commissioning and maintenance.
• Process Industry: In the AC500 distributed control systems of process industries such as petrochemical, metallurgy, water treatment, and cement, the terminal identification of I/O modules adapts to the operation and maintenance needs in complex industrial scenarios, avoiding operational errors caused by unclear terminal identification.
• Infrastructure: The supporting I/O modules of AC500 PLC in rail transit, power substation auxiliary systems, building automation and other fields are used for terminal signal identification, ensuring that operation and maintenance personnel can quickly identify terminal functions and improve operation and maintenance efficiency.
• System Retrofit and Expansion: When the AC500 PLC system is retrofitted or the I/O modules are expanded, it is used for the terminal identification of new modules, keeping the entire system identification standardized and unified, and facilitating later unified operation and maintenance management.

IV. Installation and Use Guide

1. Pre-Installation Preparation

• Model Verification: Confirm that TA525 (1SAP180700R0001) is compatible with the used AC500 I/O module model, check the package integrity, and ensure that 10 label strips are undamaged, deformed or yellowed, and the snap-on structure is intact.
• Environment and Safety: Disconnect the power of the control cabinet and wait for the capacitors to discharge for ≥ 5 minutes; wear an anti-static wristband to avoid static damage to the I/O module; the installation environment must be dry, free of condensation and dust accumulation, and ensure that the surface of the I/O module terminals is clean.
• Tools and Materials: Prepare ABB special marking pens (or erasable industrial marking pens) and cleaning brushes; clean the dust and foreign objects above the I/O module terminals to ensure the snap-on surface is flat.

2. Installation and Marking Operation

• Clean the Snap-on Surface: Use a cleaning brush to clean the snap-on area above the AC500 I/O module terminals, remove dust and oil stains, ensuring that the label strip fits closely after snap-on and is not easy to fall off.
• Writing Marking Content: According to the terminal function (such as DI1, DO2, AI3, AO1, etc.), use a special marking pen to write clear identification content on the surface of the TA525 label strip. The handwriting is concise and clear, avoiding modification; if modification is needed, it can be wiped with a special cleaning tool and rewritten.
• Snap-on Fixing: Align the label strip with the written identification with the snap-on groove above the I/O module terminals, press gently, and a "click" sound indicates that the snap-on is firm; ensure that the label strip corresponds to the terminals one by one, without deviation or blocking the terminal wiring holes.
• Inspection and Confirmation: Check whether the label strip is snapped firmly, and there is no looseness when pushing the label strip gently; confirm that the identification content is consistent with the terminal function, and the handwriting is clear and distinguishable; if there is an identification error or snap-on deviation, adjust or replace the label strip in time.

3. Maintenance and Replacement

• During daily maintenance, regularly check whether the label strip is loose, falling off, yellowed or the handwriting is blurred, and fasten or replace it in time to ensure clear identification.
• When the I/O module terminal function is adjusted or the module is replaced, gently pry off the old label strip, rewrite the identification and snap on a new label strip to keep the identification consistent with the terminal function.
• Avoid using corrosive cleaning agents to wipe the label strip to prevent material aging and handwriting falling off; if there are stains on the surface of the label strip, wipe it gently with a dry cloth.

V. Common Problems and Solutions

• Label strip cannot be snapped in place: Check if the I/O module model is AC500 series; check if the snap-on structure of the label strip is deformed or damaged; clean the dust and foreign objects in the module snap-on groove, align the snap-on groove and press gently, do not force it.
• Label strip is loose or falls off after snap-on: Check if the snap-on groove is clean and flat; confirm that the label strip is not deformed, re-snap and press firmly; if the label strip is aging or the buckle is damaged, replace it with a new one.
• Handwriting is blurred and easy to fall off: Check if the marking pen is a special industrial marking pen; avoid wiping the surface of the label strip with hands; if the handwriting is blurred, clean it with a special cleaning tool and rewrite it, or replace it with a new label strip.
• Label strip is yellowed and aging: Check if the temperature in the control cabinet exceeds the specified range and optimize heat dissipation; if it is severely aging, replace it with a new label strip in time to ensure clear identification.