Description Key Technical Specifications Parameter Specification Part Number IC697CHS790D Product Type PLC Backplane / Rack Series Series 90-70 Slot Configuration 9 positions (mix of CPU, power supply, I/O, and communications) Backplane Type Universal (no dedicated slot restrictions) Power Distribution 5V DC, 24V DC to modules via card edge connectors Communication Parallel backplane bus for high-speed module intercommunication Mounting Panel mount (holes provided) Dimensions Standard 19-inch rack compatible width Materials Rugged steel chassis with gold-plated card edge connectors Compatibility All Series 90-70 modules (CPU, power supply, I/O, specialty) Condition New Surplus (Original Packaging) Product Introduction The GE IC697CHS790D is the 9-slot universal backplane for the Series 90-70 PLC platform. It provides the mechanical mounting and electrical interconnection for the CPU, power supply, and all I/O modules. Unlike some backplanes that restrict slot assignments, this universal design accepts any module type in any position, giving you complete configuration flexibility. The IC697CHS790D uses a passive backplane architecture with gold-plated card edge connectors for reliable signal transfer in industrial environments. This unit is new surplus, factory-sealed in original GE packaging. Series 90-70 components are now in the mature phase of their lifecycle; contact us for current pricing and availability. Frequently Asked Questions (FAQ) Q: Can I mix 5V and 24V modules in any slot on the IC697CHS790D? A: Yes, that’s the beauty of the universal design. The GE IC697CHS790D distributes both 5V and 24V DC to every slot through the backplane. The modules only draw what they need. You can put a 5V CPU next to a 24V analog module without worrying about slot restrictions. Just watch your total power budget—the power supply handles the rest. Q: Does this rack require a terminator on the last slot? A: No, the IC697CHS790D backplane is self-terminating. GE engineered these with built-in termination on the backplane traces. You don’t need to add physical terminators like you do on some older PLC systems. If you’re coming from Modicon or AB PLC-5, this catches people off guard—no terminators to lose or forget. Q: Will the “D” revision work with my old Series 90-7 0 CPU from the 1990s? A: Absolutely. The IC697CHS790D is backward compatible with every CPU ever made for the Series 90-70 line, from the original 731 through the 780 and 790 series. The “D” revision just indicates a later manufacturing run—same electrical specs, same mechanical fit. I’ve dropped 914 CPUs into these with zero issues. Q: What’s the maximum number of racks I can connect together? A: With the GE IC697CHS790D as your main rack, you can expand using remote I/O scanners or Genius bus controllers. For local expansion, you’re limited by the CPU’s backplane capacity. Most CPUs support up to 5 total racks (local expansion) using parallel expansion cables. Check your specific CPU manual—the 731 series is more limited than the 780 series. Q: The gold fingers on my old modules look worn. Will they connect reliably in a new CHS790D? A: Good question. The IC697CHS790D uses robust card edge connectors designed for repeated insertions. If your module edges are worn but not physically damaged, the new connectors will likely grip tighter than your old worn-out rack. However, if you see deep scratches through the gold down to base metal, you’re asking for intermittent faults. In my experience, replacing both the rack and suspect modules together eliminates those ghost faults that drive you crazy at 3 AM. Q: Is this backplane hot-swappable? A: No. Never hot-swap modules in a Series 90-70 rack. The IC697CHS790D distributes power to all slots simultaneously. Pulling a module live can cause arcing on the connectors and potentially damage the backplane traces or the power supply. Always power down the rack before inserting or removing any module. This isn’t a redundant hot-swap system like the later RX7i. 330180-51-00 DCS 80025-523-15-R DCS 80025-523-09-R FCS MSR230P-440R-H23180 IEC 6AV3637-1ML00-0FX0 FCS Email: [email protected] Phone: 86 15340683922 Sales:Wu Jiedong Our products are guaranteed for 1 year, with new and original production stopped and imported spare parts. All prices listed on the official website are subject to confirmation by contact: Wu Jiedong (manager). Our product: brand new original packaging Our warranty: All new or repaired parts have a 12 month warranty period beginning Our payment: 100% telegraphic transfer of inventory items before shipment, conditions can be proposed! If you have any downtime spare parts that you cannot find, please feel free to call or use email to contact me. If there are issues that the product cannot solve, please contact me. Product prices can be negotiated. Please do not consider contacting me!