Industrial Automation Solution – GE Fanuc IC697CHS791J | Series 90-70 PLC Expansion Chassis
Where This Product Is Used
The GE Fanuc IC697CHS791J is a 9-slot expansion chassis designed for the Series 90-70 PLC platform — one of the most widely deployed rack-based control systems in heavy industry. Engineers specify this chassis in applications where the base rack has exhausted its I/O capacity and additional modules must be added without replacing the CPU or power supply infrastructure.
- Automotive manufacturing lines – Expanding I/O for body-in-white welding cells and paint-shop conveyors
- Oil & gas processing plants – Adding analog input modules for pressure, temperature, and flow monitoring in remote expansion racks
- Water & wastewater treatment – Scaling SCADA-connected PLC systems with additional discrete I/O for pump and valve control
- Power generation & utilities – Integrating protection relay interfaces and metering modules in substation automation panels
- Pulp & paper mills – Extending process control racks for dryer section and winder drive coordination
- Chemical & pharmaceutical batch processing – Adding redundant I/O modules in GMP-compliant control cabinets
- Food & beverage packaging lines – Expanding filling, capping, and labeling machine control systems
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | IC697CHS791J |
| Manufacturer | GE Fanuc Automation |
| Series | Series 90-70 |
| Chassis Type | Expansion (Remote I/O) Chassis |
| Number of Slots | 9 I/O Module Slots |
| Backplane Bus | Series 90-70 VME-based parallel backplane |
| Compatible CPUs | IC697CPU7xx series (via Bus Transmitter/Receiver modules) |
| Power Supply Slot | Dedicated slot (left-most); accepts IC697PWR7xx series PSUs |
| Bus Interface | Requires IC697BEM711 (Bus Transmitter) / IC697BEM721 (Bus Receiver) |
| Operating Temperature | 0 °C to 60 °C |
| Storage Temperature | -40 °C to 85 °C |
| Relative Humidity | 5% to 95% non-condensing |
| Mounting | Panel / DIN rail adapter (horizontal) |
| Weight | Approx. 600 g (chassis only) |
| Compliance | UL, CE, cUL |
Why Engineers Specify This Model
- Maximum slot density – 9 slots provide the highest I/O expansion capacity in the Series 90-70 chassis family, minimizing the number of expansion racks required per panel.
- Proven VME backplane architecture – The parallel backplane delivers deterministic, high-speed data transfer between I/O modules and the CPU — critical for time-sensitive process control loops.
- Drop-in compatibility – Accepts all Series 90-70 I/O, communications, and specialty modules without firmware changes or hardware adapters.
- Long service life – GE Fanuc Series 90-70 hardware remains operational in installed base systems worldwide; sourcing the IC697CHS791J extends system life without costly migration projects.
- Reduced panel footprint – Compared to adding a second base rack, a single 9-slot expansion chassis consolidates I/O in less cabinet space.
Complete System Bill of Materials
To commission a fully operational Series 90-70 expansion rack using the IC697CHS791J, the following components are typically required:
- IC697CHS791J – 9-Slot Expansion Chassis (this item)
- IC697PWR710 / IC697PWR711 / IC697PWR724 – Series 90-70 Power Supply (select per load requirements)
- IC697BEM711 – Bus Transmitter Module (installed in base rack CPU slot area)
- IC697BEM721 – Bus Receiver Module (installed in expansion chassis)
- IC697MDL xxx series – Discrete / Analog I/O Modules (application-specific)
- Expansion Bus Cable – IC697CBL500 / IC697CBL502 (length-dependent)
- Panel mounting hardware – M5 screws, DIN rail adapter (if applicable)
Contact support@konmask.com for a complete BOM quotation tailored to your application.
Compliance & Industry Standards
- UL Listed (Industrial Control Equipment)
- CE Marked (EMC Directive 2014/30/EU; Low Voltage Directive 2014/35/EU)
- cUL (Canadian market compliance)
- RoHS compliant (where applicable to revision suffix)
- IEC 61131-2 (Programmable Controllers – Hardware Requirements)
- NEMA ICS 2 (Industrial Control Devices)
Quality Assurance & Sourcing
Every IC697CHS791J unit offered by Konmask.com undergoes the following before shipment:
- Visual inspection – Backplane connectors, slot guides, and chassis frame checked for physical damage
- Functional power-on test – Chassis verified to accept power supply and bus receiver modules without fault indication
- Revision suffix verification – Suffix letter (J) confirmed against GE Fanuc product revision records
- ESD-safe packaging – Shipped in anti-static bags with foam cushioning inside double-wall cartons
- Traceability – Serial number and revision documented per order for warranty and audit purposes
Units are sourced from decommissioned industrial systems, authorized distributors, and certified surplus channels. All stock is tested prior to listing.
How to Source This Part
- Add to cart and proceed to checkout — secure payment via major credit cards, PayPal, and wire transfer accepted.
- Request a quote for volume orders (>3 units) or bundled BOM purchases — email support@konmask.com with your quantity and delivery timeline.
- Expedited shipping available — DHL Express, FedEx International Priority, and UPS Worldwide options at checkout.
- Lead time — In-stock units ship within 1–2 business days from Xiamen, China.
- Export documentation — Commercial invoice, packing list, and certificate of origin provided for all international shipments.
Application-Specific FAQ
Q: Can the IC697CHS791J be used as a base (CPU) rack?
A: No. The IC697CHS791J is an expansion chassis only. It does not have a CPU slot. The CPU resides in the base rack (e.g., IC697CHS750 or IC697CHS782). The expansion chassis connects to the base rack via Bus Transmitter (IC697BEM711) and Bus Receiver (IC697BEM721) modules.
Q: How many IC697CHS791J expansion racks can be chained from one CPU?
A: The Series 90-70 architecture supports up to 7 expansion racks per CPU, depending on the CPU model and bus cable length. Consult GE Fanuc GFK-0867 (Series 90-70 Installation Manual) for your specific configuration limits.
Q: Is the IC697CHS791J compatible with Series 90-30 or PACSystems modules?
A: No. The IC697CHS791J is exclusively compatible with Series 90-70 modules. Series 90-30 (IC693 prefix) and PACSystems RX7i modules use different backplane architectures and are not interchangeable.
Q: What power supply should I pair with this chassis?
A: The most common choices are the IC697PWR710 (120/240 VAC, 30 W) and IC697PWR711 (120/240 VAC, 55 W). Select based on the total power draw of the I/O modules installed. Konmask can assist with power budget calculations — contact us before ordering.
Q: Do you offer a warranty on surplus IC697CHS791J units?
A: Yes. Konmask.com provides a 90-day functional warranty on all tested surplus units. If a unit fails under normal operating conditions within 90 days of delivery, we will replace it or issue a full refund.
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