Sd2

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A resolver error has occurred at terminal X7, typically indicating an interrupted resolver cable. This prevents accurate position feedback.

• Break or open circuit in one or more conductors of the resolver feedback cable connected to terminal X7.
• Poor or corroded connection at the resolver connector, terminal X7 on the drive, or within the resolver itself.
• Damaged resolver sensor (e.g., mechanical impact, contamination, internal short) providing incorrect or no feedback signals.
• Incorrect resolver wiring to terminal X7 (e.g., swapped sine/cosine signals, incorrect shield connection).
• Excessive electrical noise or interference on the resolver cable causing signal corruption.

Klikk på steg for å spore fremgangen.

1. 1

   1. Power down and lockout the drive. Disconnect the resolver cable from terminal X7 on the drive and at the resolver end.

2. 2

   2. Using a multimeter, check continuity of each individual wire within the resolver cable from end to end.

3. 3

   3. Measure the resistance of the resolver windings at the resolver connector (e.g., between reference and sine, reference and cosine). Refer to the resolver datasheet for expected values.

4. 4

   4. Inspect terminal X7 on the drive and the resolver connector for bent pins, corrosion, or loose connections.

5. 5

   5. Ensure the resolver cable shield is properly connected to the drive's designated ground terminal and the motor frame.