GE IC697CHS770D Series 90‑70 17‑Slot Rear‑Mount Dual‑Partition Redundant PLC Chassis

Technical Specifications

Model：IC697CHS770D

Brand：GE Fanuc（Emerson Automation）

Product Type：Series 90‑70 rear‑mount dual‑partition redundant PLC chassis，D hardware revision

Total Slots：17 slots，dual independent electrically‑isolated backplane partition A and partition B

Partition Layout：Partition A：1 power slot +1 CPU slot +6 I/O slots；Partition B：1 power slot +1 CPU slot +6 I/O slots；total 12 I/O slots

Installation Mode：Rear‑mount installation；modules plug‑in from cabinet rear side；only wiring terminals exposed on cabinet front；fits 19‑inch standard industrial cabinet

Backplane Feature：Two separate backplane buses；electrical isolation between A/B partitions；single‑partition fault will not affect the other partition operation

Power Supply Compatibility：Support two IC697PWR series power supplies for dual power redundant configuration

Backplane Current Capacity：Each partition +5VDC maximum 20A

Module Compatibility：Fully compatible with full IC697 series：CPU, discrete I/O, analog I/O, communication coprocessor, special function modules；also compatible with partial IC687 VME‑bus modules

Rack Address Setting：Rack ID configured via jumpers on the rear side of backplane

Expansion Capability：Connect external expansion racks by IC697CBL703 bus extension cable；max 8 racks cascaded；cable distance up to 10m without repeater

Mechanical Structure：Heavy‑duty stamped steel frame, galvanized anti‑rust treatment, anti‑vibration and anti‑shock for industrial cabinet installation

Dimension：283mm ×483mm ×190mm(H×W×D)

Operating Temperature：0℃ ~ +60℃，non‑condensing

Storage Temperature：‑40℃ ~ +85℃

Humidity：5%‑95% non‑condensing

Weight：5.2kg

Application：Power plant turbine control, petrochemical high‑reliability process control, dual‑CPU hot‑standby automation system, legacy Series 90‑70 redundant control system maintenance and spare‑part replacement.

Product Details

IC697CHS770D is the D‑revision 17‑slot rear‑mount redundant chassis for GE Fanuc Series 90‑70 PLC platform, it is the core hardware carrier for building dual‑CPU hot‑standby high‑availability control systems.

This chassis adopts dual independent partition backplane architecture. Partition A and Partition B each own independent power slot, CPU slot and six I/O slots. The two groups of backplanes are electrically isolated. When one partition fails, the fault will not spread to the other partition, realizing physical‑level fault isolation for hot‑standby system.

Rear‑mount installation design：all PLC modules are inserted from the rear of control cabinet, only wiring terminals are reserved on cabinet front panel. It greatly saves front‑panel operation space of cabinet, convenient for field wiring and routine inspection.

The rack supports dual power redundant configuration. Two IC697 series power modules are installed separately in two power slots. If one power supply fails, the other power supply can keep the whole system running continuously, avoiding single‑point power failure shutdown risk.

It supports full‑range IC697 series modules, including CPU, digital/analog I/O boards, communication coprocessors and special functional boards. Rack station number is set by rear‑side jumpers. It can connect multiple expansion racks through dedicated bus cable to expand I/O scale for large‑scale process control projects.

Heavy‑duty steel frame provides excellent anti‑vibration and anti‑shock performance for complex industrial site environment. Multi‑layer PCB backplane guarantees stable signal transmission and good anti‑interference capability.

This redundant rack is widely deployed in thermal power plant turbine control and petrochemical high‑reliability production sites. It is used for system construction, hardware upgrading and spare‑part replacement of old Series 90‑70 dual‑CPU hot‑standby PLC control systems.