Hitachi WJ200-001S Instruction Manual page 272

Wj200 series single/three-phase inputs 200v/400v class

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Electronic Thermal Warning Signal Output

You can configure this function so that the inverter outputs a warning signal before the

electronic thermal protection operates against motor overheat. You can also set the

threshold level to output a warning signal with the electronic thermal warning level

setting ().

To output the warning signal, assign function

output terminals [11] to [12], or to the relay output terminal.

Thermal warning

signal output

11, 12, AL0 – AL2

Valid for inputs:

Required settings

 The example circuit for terminal [11] drives a relay

coil. Note the use of a diode to prevent the

negative-going turn-off spike generated by the coil

from damaging the inverter's output transistor.

Function Name

(THM)" to one of the intelligent

Accumulated thermal level exceeds the electronic

thermal warning level ()

Accumulated thermal level does not exceed the

electronic thermal warning level ()

Example for terminal [11] (default output

configuration shown – see

Inverter output

terminal circuit

Example for terminal [AL0], [AL1], [AL2] (requires

output configuration – see

Inverter logic

circuit board

See I/O specs on

page 4-51 and

Troubleshooting