Hitachi E3 fault code meaning

Series: J100-E2

PM. Accel

AC drive

Meaning: Overcurrent during motor acceleration | Rapid acceleration; short-circuits or grounds of output; too high starting frequency; too high torque boost; locked motor. | Increase deceleration time [sic]; check output wiring and motor for shorts; decrease starting frequency; decrease torque boost; check motor or load.

Possible causes

Source: Hitachi J100-E2 Instruction Manual P9