TA541 - Lithium Battery¶
- Manganese dioxide lithium button cell, 3 V
- Primary cell, non-rechargeable
Purpose
The TA541 lithium battery is the only applicable battery for PM595 PM595. It is used to save RAM content of the Processor Module (PM595-4ETH-F only) and to back-up the real-time clock (all PM595 variants). It is a primary cell and cannot be re-charged.
The Processor Modules are supplied without a lithium battery. It therefore must be ordered separately. The TA521 Lithium Battery is used to save RAM contents of AC500 Processor Modules and back-up the real-time clock. Although the Processor Modules can work without a battery, its use is still recommended in order to avoid process data being lost.
The CPU monitors the discharge degree of the battery. A warning is output, before the battery condition becomes critical (about 2 weeks before). After the warning message has appeared, the battery should be replaced as soon as possible.
Handling Instructions
- Do not short-circuit or re-charge the battery! It can cause excessive heating and explosion.
- Do not disassemble the battery!
- Do not heat up the battery and not put into fire! Risk of explosion.
- Store the battery in a dry place.
- Replace the battery with supply voltage ON in order not to risk data being lost.
- Recycle exhausted batteries meeting the environmental standards.
Battery Lifetime
The battery lifetime is the time the battery can store data while the CPU is not powered. As long as the CPU is powered, the battery will only be discharged by its own leakage current.
Technical Data
| Nominal voltage | 3 V |
| Nominal capacity | 1800 mAh |
| Temperature range | Operating: -40 °C … 70 °C Storage: -40 °C … +85 °C Transport: -40 °C … +85 °C |
| Battery lifetime | Typ. 3 years at 25 °C |
| Self-discharge | 1 % per year at 25 °C 5 % per year at 40 °C 20 % per year at 60 °C |
| Protection against reverse polarity | Yes, by mechanical coding of the plug |
| Insulation | The battery is completely insulated. |
| Connection | Red = plus pole = above at plug, black = minus pole, |
| Weight | 17 g |
| Dimensions | Diameter of the cell: 18 mm, Height of the cell: 34.5 mm |
Ordering Data
| Order No. | Scope of delivery | Product life cycle status |
|---|---|---|
| 1SAP 182 700 R0001 | TA541, lithium battery | Active |
Note
*) For planning and commissioning of new installations use modules in Active status only.