Electronic Thermal Warning Signal Output - Hitachi WJ200 Series Instruction Manual

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 (C061).
To output the warning signal, assign function
output terminals [11] to [12], or to the relay output terminal.
Option Terminal
Code Symbol
THM Thermal warning
13
signal output
11, 12, AL0 – AL2
Valid for inputs:
C061
Required settings
Notes:
• 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 State
ON
OFF
"13 (THM)" to one of the intelligent
Description
Accumulated thermal level exceeds the electronic
thermal warning level (C061)
Accumulated thermal level does not exceed the
electronic thermal warning level (C061)
Example for terminal [11] (default output
configuration shown – see
Inverter output
terminal circuit
CM2
Example for terminal [AL0], [AL1], [AL2] (requires
output configuration – see
Inverter logic
circuit board
AL0 AL1
Power
supply
See I/O specs on page 4-6
4−65
page 3-90):
THM
11
RY
page 4-52 and 3-90):
THM
AL2
Load