Protective Characteristic Selection 5
Sn-14
(1) 1st digit
(motor protection)
1st digit = 0: Electronic thermal motor protection is enabled.
1st digit = 1: Electronic thermal motor protection is disabled.
(2) 2nd digit
(selection of electronic thermal characteristics)
2nd digit = 0: Electronic thermal characteristics are in accordance with reduced
torque motor (standard motor).
2nd digit = 1: Electronic thermal characteristics are in accordance with constant
torque motor (special motor).
(3) 3rd digit
(electronic thermal time constant)
3rd digit = 1: Used for standard motor and special motor (standard ratings).
3rd digit = 1: Used for motors other than the above (short-time ratings).
(4) 4th digit
(selection of inverter protective characteristics)
4th digit = 0: When inverter output current exceeds 103%, the inverter protection
electronic thermal characteristics start operating: Inverter
protection ( ) operates at 150% for one minute to shut OFF
inverter output.
4th digit = 1: When inverter output current exceeds 113%, the inverter protection
electronic thermal characteristics start operating: Inverter
protection ( ) operates at 123% for one minute to shut OFF
inverter output.
Note: This function is effective only for inverter models with capacity 40HP (30kW)
or larger (230V class), and 75HP (55kW) or larger (460V class).
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