Motor Overload Protection - Hitachi SJ300 Series Quick Reference Manual

Motor Overload Protection

Hitachi SJ300 inverters provide solid state motor overload protection,
which depends on the proper setting of the following parameters:
• B012 "electronic overload protection"
• B212 "electronic overload protection, 2nd motor"
• B312 "electronic overload protection, 3rd motor"
Set the rated current [Amperes] of the motor(s) with the above parame-
ters. The setting range is 0.2 * rated current to 1.2 * rated current.
Warning: When two or more motors are connected to the
inverter, they cannot be protected by the electronic overload pro-
tection. Install an external thermal relay on each motor.
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