GE Series 90-30 IC693ACC307 Bus Expansion Components

Configured for high-frequency signal termination in multi-rack expansion configurations, the GE IC693ACC307 (IC693ACC307 I/O Bus Expansion Terminator) provides direct physical/electrical execution. The hardware absorption block terminates the parallel differential I/O expansion bus lines, blocking voltage reflections and maintaining signal symmetry across interconnected baseplates.

Hardware Specifications

Backplane Bus Communication Velocity and Density Scaling

This termination component attaches directly to the peripheral expansion port to support high backplane bus communication velocity across remote expansion racks. By absorbing boundary energy reflections, it maintains electrical integrity across data lines during dense I/O density scaling routines involving multi-channel analog and discrete processing blocks. The passive architecture requires no setup logic, utilizing native system firmware flash compatibility parameters within the host CPU to regulate deterministic multi-rack transmission cycles without incurring logic scan overhead.

Frequently Asked Questions

Q: Does the IC693ACC307 block support active hot-swap insertion or removal during active PLC operations?

A: No. Removing the terminator from an operating system breaks the electrical balancing loop of the expansion bus. This induces immediate signal distortion, causing communication errors, data dropping, and unexpected processing halts across all remote I/O sub-racks.

Q: Where must the IC693ACC307 component be installed inside a multi-chassis configuration?

A: The terminator must be plugged exclusively into the open 25-pin expansion port of the final physical expansion baseplate in the daisy-chain link. Intermediate expansion baseplates must utilize standard expansion cables rather than termination blocks.

Q: Does this passive component draw power from the local chassis 5 VDC rail?

A: No. The terminator contains a passive resistor array that does not consume operating current from the backplane system logic lines. It does not alter power budget calculations for individual rack assemblies.

Field Installation Guidelines

• Mechanical Coupling Protocol: Insert the female 25-pin D-shell connector directly into the male expansion bus connector on the final chassis baseplate.
• Securing Retention Screws: Tighten both integrated slide-lock retention screws completely to anchor the block to the chassis frame and prevent intermittent ground disconnection from industrial vibration.
• Cable Management Layout: Maintain a minimal bend radius for expansion cables leading to the termination point, and separate the data lines by at least 10 cm from high-current AC motor leads.
• Shield Continuity Maintenance: Verify that the connector shell forms a clean, uninsulated connection with the baseplate plate to provide a true ground exit path for high-frequency common-mode noise.