GE Fanuc IC697PWR724 90W 24VDC Power Supply for Series 90-70

Engineering Overview: Stable DC Power Conversion

The IC697PWR724 is a high-reliability Power Supply Module specifically engineered for the GE Fanuc Series 90-70 controller family. It converts a 24V DC input (18–32V range) into stable 5V, 12V, and -12V DC outputs required for PLC logic and I/O communication. Designed for heavy-duty industrial integration, it occupies the leftmost slot of the rack and connects via a 48-pin backplane interface. This module features advanced thermal management and robust ride-through capabilities, ensuring continuous operation during transient input power dips.

Technical Specification Matrix

• Model: IC697PWR724 (Series 90-70 Power Supply)
• Input Voltage: 24V DC (18–32V Range)
• Total Power: 90 Watts Maximum
• Output Configuration: 5V (26A), 12V (4A), -12V (2A)
• Compatibility: Series 90-70 & VME Integrated Racks

Global PLC Spare HUB’s Insight

The IC697PWR724 is unique in its ability to support multi-rack configurations. While it is a 90W unit, the engineering reality is that heat dissipation is the limiting factor. When utilizing this supply to power a second remote rack via an interconnect cable, we advise calculating the total current draw of all modules in both racks; if the sum exceeds 80% of the 90W total capacity, you risk premature electrolytic capacitor degradation. Always verify your total power budget before extending the bus to a second rack.

Operational Applications & Diagnostics

• Suitable Equipment: Distributed Control Systems (DCS), automated manufacturing workcells, and high-performance VME-based industrial computational racks.
• Diagnostic Capability: Equipped with integrated overvoltage and overcurrent protection circuits. If the unit fails to initialize, check the input voltage at the terminal block; consistent drops below 18V will trigger the lockout, preventing the supply from attempting to boost weak input power.
• Warranty: 12-month industrial-grade performance warranty.
• Shipping: Expedited global transit via FedEx, UPS, or DHL; 24–48 hour dispatch.

Expert Frequently Asked Questions

How do I safely derate this module for high-temperature environments?
If your cabinet internal temperature consistently exceeds 60°C, we recommend reducing the total load to approximately 75% of the 90W rating to prevent thermal stress on the internal switching components.

Can I use this power supply with non-Series 90-70 VME racks?
While the module is VME compatible, it is physically and electrically keyed for the GE Fanuc Series 90-70 backplane. We do not recommend modification for use in standard generic VME chassis.

What are the signs that the module is reaching its end-of-life?
Listen for faint high-frequency "whining" or buzzing from the transformer, or observe erratic I/O module reboots. These indicate that the output capacitors are losing capacitance and failing to filter the ripple current effectively.

What is the maximum distance for powering a second rack?
You are limited by the voltage drop across the interconnect cable. We recommend using a high-gauge, low-resistance cable and keeping the second rack within 2 meters to ensure the 24V input does not drop below the 18V threshold.

Does the 10 ms ride-through time protect against total power failure?
No. The 10 ms ride-through is designed only to bridge momentary "flickers" or micro-interruptions in the DC supply. It is not intended to keep the PLC running during a sustained power outage.

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