Product Core Brief

• Brand: GE Fanuc / Emerson Automation
• Model: IC697RCM711
• Series: Series 90‑70 PLC
• Core Function: Dedicated redundancy communications module enabling real-time data synchronization between active and standby CPUs within Hot Standby and Enhanced Hot Standby redundant Series 90‑70 control systems
• Type: Single-slot rack-mounted redundancy interface module
• Condition: New Original (New Surplus)
• Status: ⚠️ Discontinued OEM production; limited surplus inventory
• Key Spec Highlights: High-speed parallel synchronization bus, manual failover pushbutton, five front-panel diagnostic LEDs, 0.7 A @ +5 VDC backplane draw, max 15 m inter-rack cable length

Key Technical Specifications

• Form Factor: Single slot Series 90‑70 rack; installable in slots 2 through 9
• Backplane Power Draw: 0.7 A at +5 VDC
• Synchronization Interface: High-speed parallel bus; mates with IC697BEM713 bus transmitter modules
• Supported Redundancy Modes: Hot Standby, Enhanced Hot Standby CPU redundancy
• Maximum Inter-Rack Distance: 15 meters (50 feet) using approved IC600WDxx synchronization cables
• Front Panel Indicators: Board OK, Local Ready, Local Active, Remote Ready, Remote Active
• Local Control: Integrated pushbutton for manual active/standby switchover during maintenance
• Compatible Redundant CPUs: IC697CGR772, IC697CGR735, IC697CPU780 and matching redundant variants
• Operating Temperature: 0 °C to +60 °C
• Ambient Humidity: 5%–95% non‑condensing
• Configuration: Configured via legacy MS‑DOS programming software
• Enclosure: Standard Series 90‑70 metal carrier assembly

Product Introduction

Unplanned controller failure in power, chemical and water treatment facilities can trigger costly process trips. GE acts as the critical data link between primary and backup Series 90‑70 CPUs, continuously exchanging logic state, I/O and register data to maintain the standby processor fully synchronized.

This unit supports bumpless controller switchover and provides a manual pushbutton for controlled maintenance transfers without forcing a full process shutdown. The standardized single-slot footprint enables direct drop-in replacement in redundant Series 90‑70 racks during scheduled outage windows.

Key Selling Points & Differentiators

1. GE delivers low-latency inter-CPU synchronization required to achieve seamless failover in Series 90‑70 hot standby control architectures.
2. Front-panel manual switchover pushbutton allows engineers to transfer control safely to the standby unit for inspection or repair of the active rack.
3. Every unit completes full bench validation in a redundant Series 90‑70 test setup; synchronization handshake and LED functions verified prior to shipment. Signed test documentation available on formal request. Warranty coverage runs 12 months post delivery.
4. Five dedicated status LEDs deliver clear visibility into local and remote redundancy health without separate diagnostic tools.
5. Not recommended for RX7i or RX3i PACSystems racks. This hardware is built exclusively for legacy Series 90‑70 backplane architecture and cannot operate on VME64 or CompactPCI platforms.
6. Identical mechanical form factor and backplane pinout matching OEM specifications; no rack wiring rework required for spare exchange.

Quality Transparency SOP

• Incoming Verification: Serial traceability validation, anti-counterfeit visual inspection, front connector and pushbutton hardware cross-check.
• Live Bench Test: Dedicated dual-rack Series 90‑70 redundant test setup, power-on self-test, synchronization link validation, automatic and manual failover testing, continuous 24-hour thermal cycling.
• Electrical Tests: 500 V megger insulation resistance testing, backplane continuity verification.
• Hardware Verification: Confirm LED array and manual switchover circuit operate per datasheet; no unauthorized component rework performed.
• Final QC & Packaging: Anti-static shielding, shock-dampened transit carton, signed QC Pass label. Test images and logs available on request. No zero-failure performance guarantee.

Technical Risk Avoidance Section

Cable Length and Termination Risk Risk: Exceeding the 15 m maximum cable limit or using unapproved cabling causes incomplete synchronization and failed switchover events. Prevention: Deploy only GE specified IC600WD series synchronization cables and respect published length limits. Field note: Multiple power plant auxiliary control systems recorded partial state loss after field technicians installed non-compliant long-distance wiring between redundant racks.

Slot Placement Risk Risk: Installing the unit in slot 0 or slot 1 disrupts backplane timing and prevents redundancy initialization. Prevention: Restrict mounting to slots 2 through 9 on all Series 90‑70 racks.

ESD Damage Risk Risk: Unprotected handling damages onboard parallel bus transceiver circuits without immediate visible fault indicators. Prevention: Use grounded wrist straps; keep the module sealed inside anti-static packaging until rack insertion.

CPU Firmware Mismatch Risk Risk: Mismatched firmware revisions between paired redundant CPUs create synchronization drift even with a fully functional unit. Prevention: Standardize firmware revisions on both primary and standby controllers before commissioning new hardware.

Critical Summary: Confirm rack platform before ordering. This module works solely within Series 90‑70 redundant CPU systems and cannot be interchanged with IC687RCM711 or PACSystems redundancy hardware.

FAQ

1. Q: Can GE be used inside RX7i or RX3i PACSystems racks? A: No. It is designed exclusively for legacy Series 90‑70 PLC hardware and uses a proprietary parallel sync bus incompatible with later PACSystems platforms.
2. Q: Does this module support automatic failover if the active CPU faults? A: Yes. Continuous state synchronization enables automatic switchover. The front pushbutton provides an additional method for planned manual transfers.
3. Q: What lead times apply for available inventory? A: In-stock units ship within 1–3 business days. Backordered allocations require 5–7 week lead times subject to global surplus availability.
4. Q: What maximum cable distance is allowed between paired modules? A: The official limit is 15 meters (50 feet) using approved IC600WD synchronization cables. Longer distances lead to synchronization errors.
5. Q: What failure modes fall outside warranty coverage? A: The 12-month limited warranty covers manufacturing defects. Damage from ESD, improper slot placement, unapproved cabling, and over-temperature operation is excluded.
6. Q: What is the difference between and IC687RCM711? A: is built for Series 90‑70 racks; IC687RCM711 belongs to the VME-based Series 90‑70 VME family. They share similar function but are not mechanically or electrically interchangeable.
7. Q: Can hot swap be performed while the redundant control system remains online? A: Hot swap is not supported. Module removal interrupts synchronization; controlled process shutdown or coordinated redundancy transfer is required before exchange.