SK-G9-FAN1-F4 — Frame 4 Heatsink Fan Kit for 700-Series AC Drives

The SK-G9-FAN1-F4 is the heatsink cooling fan replacement kit for Frame 4 drives in the 700-series AC drive platform. It provides the field-replaceable fan assembly that mounts directly on the drive's heatsink, restoring full cooling airflow across the power module after the original fan reaches the end of its service life. Frame 4 sits in the mid-range of the platform's frame sizes, where continuous-duty heat dissipation depends meaningfully on consistent fan performance.

Specifications

Parameter	Value
Part Number	SK-G9-FAN1-F4
Compatible Drive	700-Series AC Drive, Frame 4
Fan Position	Heatsink mounted
Kit Type	Field-replaceable spare part
Frame Compatibility	Frame 4 only

Cooling Replacement at Frame 4

Heatsink fans in this frame range move air directly across the IGBT modules and heatsink fins, and their condition determines how much thermal margin the drive carries under sustained load. A fan that's degrading — through bearing wear, dust accumulation, or simple end-of-life — reduces airflow gradually before it stops outright, which means the drive's available thermal headroom under peak load shrinks well before any obvious failure symptom appears. Replacing the fan proactively, rather than waiting for a hard failure or repeated overtemperature trips, keeps that margin intact.

Because the fan mounts directly to the heatsink rather than sitting loose inside the housing, replacement involves accessing the drive's internal compartment in a way that brings the IGBT heatsink assembly into view. This makes it a good opportunity to visually inspect the heatsink fins for dust buildup and clean them if needed, since restricted airflow through clogged fins undermines a new fan's benefit just as much as a worn one would.

FAQ

Q: Can this kit be used on a Frame 3 or Frame 5 drive instead?

No. Fan dimensions and mounting points are frame-specific across this drive platform — each frame size uses its own dedicated fan kit, and a Frame 4 kit will not fit a different frame.

Q: What precautions are needed before opening the drive to access the fan?

Disconnect AC input power and confirm the DC bus has fully discharged with a calibrated meter before opening the housing — stored energy in the bus capacitors presents a genuine hazard regardless of how routine the fan swap itself seems.

Q: What are the early warning signs that this fan needs replacement?

An audible change in fan noise — grinding, rattling, or a rising pitch — combined with a gradual upward trend in the drive's internal temperature reading at the same load and ambient conditions are the most reliable early indicators, both of which typically appear well before a hard failure.

Q: Does replacing the fan affect the drive's stored parameters?

No. This is purely a mechanical and electrical hardware task — the drive's parameter settings and fault history remain unaffected by the fan replacement procedure.

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