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FANUC Alarm LECO-051 — Cap B under voltage (Cap A volts, Cap B volts)

Description

The voltage on one of the two input capacitor banks (bank B) has fallen below the normal operating limit. This is normally caused by low input voltage or a missing phase (with 3 phase input power) but it could be caused by a faulty switch board, main capacitor, contactor, or V-to-F feedback signal.

Remedy · Remède

Check the input power (voltage and frequency). Verify the primary reconnect is properly configured for the input voltage.

Related codes / Codes liés

LECO-024ArcLink mapping failed (%d^1)LECO-050Cap A under voltage (Cap A volts, Cap B volts)LECO-052Cap A over voltage (Cap A volts, Cap B volts)LECO-053Cap B over voltage (Cap A volts, Cap B volts)

Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. · Informations indicatives issues du terrain — le manuel du constructeur et ses procédures de sécurité font foi. Ne shuntez jamais un organe de sécurité ; consignez (LOTO) avant toute intervention physique.