Emerson FB3000 Руководство по установке в полевых условиях - Страница 3

Просмотреть онлайн или скачать pdf Руководство по установке в полевых условиях для Промышленное оборудование Emerson FB3000. Emerson FB3000 6 страниц. Remote terminal unit (rtu)
Также для Emerson FB3000: Руководство по установке в полевых условиях (12 страниц), Руководство по установке (14 страниц), Руководство по установке в полевых условиях (18 страниц)

Removing/Replacing the Coin Cell Batteries

A 3V lithium coin cell battery (3PBT1) in each of the two power supply modules provides backup

power for the SRAM and the real-time clock. These batteries operate continuously with a typical

expected cumulative operation of 4900 hours if only one power module is installed or 9800 hours if

both power modules are installed.

A separate third lithium coin cell battery (3SBT1) in the CPU module provides backup power for

SRAM and the real time clock only when the CPU module is physically removed from the RTU, or if

both power supply modules are physically removed from the RTU. The typical expected cumulative

operation for this third backup battery is 1250 hours.

You do not need to power down the unit to replace the SRAM backup batteries.

Important

If you ever power down the unit without the SRAM batteries installed, SRAM data is lost. Always

back up your data before you remove the SRAM batteries if you know that main power will also be

off.

Important

Replacement SRAM backup batteries must be Renata CR2450HT for the power module(s), and

Renata CR1632 for the CPU module.

DANGER

Ensure the RTU is in a non-hazardous area. Never open the enclosure in a hazardous area.

DANGER

EXPLOSION HAZARD: Do not disconnect equipment unless power has been removed or the

area is known to be non-hazardous.

DANGER

EXPLOSION HAZARD: Substitution of any components may impair suitability for Class I, Division

DANGER

EXPLOSION HAZARD: Batteries must only be changed in an area free of ignitable concentrations.

CAUTION

DANGER TO PERSONNEL AND EQUIPMENT

Do not use metallic tools to remove batteries as you could short the battery terminals. If needed,

use plastic tweezers or some other non-metallic tool.

FB3000 RTU Coin Cell Battery Field Installation Guide

D301875X012

June 2021