GE Fanuc Series 90-30 IC693ACC302 Auxiliary Battery Module

Product Overview

IC693ACC302 is a high-capacity auxiliary battery module designed for GE Fanuc Series 90-30 and Series 90-70 PLC systems. It extends RAM memory retention during power loss and stabilizes long-term controller availability in critical automation environments. This module supports industrial applications in power generation plants, oil refineries, mining operations, and continuous process manufacturing lines. It delivers extended backup duration up to 75 months for most Series 90-30 and 90-70 CPUs, ensuring stable system memory retention during extended shutdown conditions. Engineers deploy this unit to reduce data loss risks and avoid costly reconfiguration after outages. The design focuses on long operational life and simplified maintenance in demanding field environments.

Extended Power Architecture & Functional Design

The IC693ACC302 uses a high-capacity 15.0 Ah industrial-grade battery pack. It connects directly to IC693 and IC697 PLC battery interfaces through a 2-pin lead assembly. The system replaces standard backup batteries to achieve longer retention cycles. It supports Series 90-30 CPUs except CPU374 with optimized memory hold performance. CPU374 achieves around 15 months backup due to architecture limitations. The module delivers stable DC backup voltage for volatile memory circuits inside PLC CPUs. It operates as an external redundancy energy source rather than an internal cell. Engineers remove the standard battery when installing this module to avoid charging conflicts. The design improves uptime in remote or unmanned installations.

Technical Specifications

Functional FAQs

How do I prevent memory loss when switching from the standard battery to the IC693ACC302?

To avoid losing the PLC program and configuration, ensure the PLC remains powered on while you disconnect the old battery and connect the new Auxiliary Battery Module. If the system must be powered off, the swap must be completed within the capacitor-backed "hold-up" window (typically only a few minutes), so hot-swapping under power is the preferred professional method.

Can this module be used simultaneously with the standard internal battery?

No. The standard memory backup battery must be removed when the IC693ACC302 is installed. Using both concurrently can lead to unequal discharge rates or potential circuitry interference.

Why is the backup life significantly shorter for the CPU374 (15 months) compared to others (75 months)?

The CPU374 utilizes a higher-performance hardware architecture and specific RAM components that have a higher quiescent current draw than the older or lower-spec 90-30 CPUs, leading to faster battery depletion.

Installation

1. With power removed from the equipment, drill four #29 (0.136") holes, and tap for #8-32 threads, according to the hole pattern shown in the following figure. Use care to keep metal chips from falling into other equipment.

2. Securely attach the Auxiliary Battery Module to the panel mounting surface using four #8-32 x ½" flat head machine screws.

3. Note: Refer to the IC693 or IC697 installation manual for details on avoiding loss of PLC memory contents when replacing a memory backup battery.

• Connect the cable from the battery module to the battery connector on the PLC.

• For IC693 systems, the battery connector is located on the power supply module in the CPU baseplate, and the cable must be routed through the small slot in the bottom of the battery compartment.

• For IC697 systems, the battery connector is on the CPU module, and the cable must be routed out the bottom of the CPU module.

• Be careful not to pinch the battery cable when closing the IC693 battery compartment cover or IC697 CPU module cover.

• Note: Remove the standard memory backup battery when using the auxiliary battery module.