Yaskawa F7 Drive CIMR-F7U27P5

Warning: Ensure the three-phase power is disconnected and locked out before starting the inspection.

Motor is not vibrating or making unusual noises

No abnormal heat generation from the Drive or motor

Output current value shown on U1-03

Cooling fan in the Drive is operating normally

Warning: Do not touch terminals immediately after the power has been turned off. Doing so can result in electric shock.

All screws and bolts on external terminals, mounting bolts, and connectors are tightened

The terminal card can be removed and mounted without disconnecting the control wiring.

Important: Always confirm that input power is removed and the Charge LED is not lit before removing or mounting the terminal card.

1. Remove the terminal cover on the Drive.

2. Remove the Digital Operator and front cover from the Drive.

3. Remove the wires connected to FE and/or NC on the terminal card.

4. Loosen the mounting screws on the left and right sides of the terminal card until they are free; It is not necessary to remove the mounting screws completely, as they are captive and self-rising.

5. Pull the terminal card out in the direction of the block arrow.

Warning: Turn off the input power before removing and installing the heatsink cooling fan.

Removing the Heatsink Cooling Fan

Press in on the right and left sides of the fan cover in the direction of arrows '1' and then pull the fan out in the direction of arrow '2'.

Pull out the cable connected to the fan from the fan cover and disconnect the power connector.

Open the fan cover on the left and right sides in the direction of arrows '3' and remove the fan cover from the fan.

Installing the Heatsink Cooling Fan

Attach the fan cover to the cooling fan; Ensure that the airflow direction indicated by the arrows above faces into the Drive.

Connect the power connector securely and place the power connector and cable into the fan cover.

Warning: This inspection requires trained personnel with PPE!

Inspect conductors and wire connections for loose lugs, screws, wires, hot spots, corrosion, bent conductors, breakage, cracking, discoloration, and spacing

Inspect terminal blocks for looseness or damage

Check DC bus capacitors for leakage, ruptures, expansion, capacitance, and insulation resistance

Inspect relays and contactors for noise and contact discoloration

Check soft charge resistors for cracks and discoloration

Check control circuit operation, including speed reference voltage/current and I/O contact operation

Inspect the Cooling Fans/Fins & Heatsink for loose connectors

Check the digital operator for key functionality, and cleanliness

Warning: This procedure requires trained personnel with PPE!

Replace the cooling fan(s) every 2 to 3 years (20,000 hours) with a new part.

Note: The standard replacement period is based on the following usage conditions:

Sign off on the cooling fan replacement