YASKAWA VS MINI J7 Instruction Manual download pdf (Page 82)

6. Programming Features

 Motor Protection

 Motor Overload Detection

The VS mini protects against motor overload with a built-in electronic

thermal overload relay.

Motor Rated Current (Electronic Thermal Reference Current,

n32)

Set the rated current value shown on the motor nameplate.

Note: Setting n32 to 0.0 A disables the motor overload protective function.

Motor Overload Protection Selection (n33, n34)

The electronic thermal overload function monitors the motor tempera-

ture based on Inverter output current and time to protect the motor from

overheating. When the electronic thermal overload relay is enabled, an

error occurs, and the Inverter output is turned OFF to prevent

excessive overheating in the motor. When operating with one Inverter

connected to one motor, an external thermal relay is not needed. When

operating more than one motor with one Inverter, install a thermal relay

on each motor.

n33

Setting

Electronic Thermal Characteristics

0 For general-purpose motor

1 For Inverter motor

2 Electronic thermal overload protection not provided.

Constant

No.

Name Unit Setting Range Initial

Setting

n34 Protection Constant

Selection

1 min 1 to 60 min 8 min

1 2 ... 77 78 79 80 81 82 83 84 85 86 87 ... 137 138

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YASKAWA VS MINI J7 Instruction Manual Page 82