Configured for signal interconnect and power distribution in IC697 VME chassis architectures, the GE IC697ACC722, also cataloged as the IC697ACC722 VME Backplane Connector, provides direct physical/electrical execution. This passive hardware interface establishes electrical paths across the VME backplane for high-speed module-to-module data exchange and system power rails. The module integrates 6 configurable interrupt jumpers to manage signal routing across system priority levels without requiring active logic components on the bus card itself.
Suffix Breakdown & Model Matrix
| Base Part Number | Functional Variation | System Architecture | Mounting Style |
|---|---|---|---|
| IC697ACC722 | Base VME Connector Unit | Series 90-70 / VME Rack | Direct Backplane Slot Mount |
| IC697ACC721 | Optional Rack Fan Assembly | 120 VAC Forced Air Cooling | Bottom Rack Mount |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IC697ACC722 |
| Brand | General Electric |
| Origin | USA |
| Weight | 0.45 kg |
| Dimensions | 180 x 100 x 25 mm |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | Passive (No active power draw) |
| System Bus Compatibility | VMEbus Standard (IC697 Chassis) |
| Interrupt Jumpers | 6 hardware selectable jumpers |
| Auxiliary Fan Support | IC697ACC721 (120 VAC, 3-fan array) |
Industrial Control & Drive Technical Attributes
The connector interface maintains high backplane bus communication velocity and signal integrity across adjacent rack slots by minimizing line capacitance and contact resistance. Hardware jumpers provide deterministic hardware interrupt priority assignments, ensuring low-latency handshaking between the host central processing unit and attached digital or analog expansion cards. In high-density I/O configurations generating elevated thermal loads, integration with the 120 VAC 3-fan auxiliary assembly prevents localized hot spots, preserving backplane signal timing limits and ensuring stable firmware flash operation under high thermal stress.
Frequently Asked Questions
Q: What is the mechanical function of the 6 interrupt jumpers on the IC697ACC722?
A: The jumpers hardwire specific VMEbus interrupt request lines (IRQ1 through IRQ7) across backplane slots, enabling or daisy-chaining priority signals to match module placement within the rack.
Q: Can the IC697ACC722 be swapped while the backplane is energized?
A: No. Hot-swapping backplane connectors or modifying jumper configurations while the rack is powered can cause bus contention, floating logic states, or physical pin damage. Power down the rack prior to servicing.
Q: What power source is recommended for the optional IC697ACC721 fan assembly?
A: The 120 VAC fan assembly must be wired to a continuous AC power source shared with the IC697 PLC power supply to maintain forced-air cooling continuously, regardless of the CPU operational state.
Field Installation Guidelines
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Power Isolation: Turn off all primary source power to the IC697 chassis before attempting insertion, jumper positioning, or removal of the backplane connector assembly.
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Jumper Configuration: Set all 6 interrupt jumpers to their designated IRQ positions according to the system rack hardware mapping before seating the module into the backplane frame.
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Mechanical Alignment: Align the connector housing with the guide rails on the IC697 VME backplane. Apply even pressure across both ends of the connector to ensure full pin engagement without bending pins.
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Thermal Considerations: When installed in enclosures operating near the upper 60 deg C limit or alongside high-density output cards, attach the optional IC697ACC721 fan tray to the bottom of the rack frame. Route the 3-foot AC power cable away from low-voltage DC signals and ground the fan chassis frame directly to the cabinet earth bus.
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Vibration Mitigation: In high-vibration applications, secure the rack frame using heavy-duty side mounting plates and verify that all backplane retention screws are torque-tightened to prevent contact chatter.
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