Hitachi SJ Series, User Manual

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12-19-10
Chapter 12 Inverter Function
Motor thermal
integrated value
[THM]
Output current
[CE-30]
ON
12.19.8 Outputting a warning before
thermal protection of the motor
• I want to check the motor current and output the
signal before the motor electronic thermal
calculated by the inverter generates an error.
• I want to cool the system before a thermal error is
generated.
• Assign the output terminal function 026 [THM]
motor thermal warning signal to one of [CC-01] to
[CC-07] that corresponds to the output terminal
and output the signal.
• You can understand the state from the signal
before the motor overload error [E005] is
generated by the electronic thermal function.
Example operation (when thermal subtractions
enabled)
Parameter
• The motor overload error [E005] will be generated
when the motor thermal integrated value reaches
100.00%.
• For the settings of motor electronic thermal, refer
to 12.7.1
“
Setting the electronic thermal of the
motor.
”
Item Parameter Data Description
Output terminal function
selection 11-15
[CC-01]~[CC-05]
026
The thermal warning signal [THM] of the
motor is output.
OFF: The motor thermal integrated value
is smaller than the level.
ON: The motor thermal integrated value is
equal to or larger than the level.
Relay output terminal function
selection 16A-16C
[CC-06]
Relay output terminal function
selection AL1-AL0/AL2-AL0
[CC-07]
Electronic thermal warning
level
(motor)
[CE-30] 0.00~100.00(%)
The signal [THM] is turned on when the
thermal integrated value of the motor is
equal to or larger than the set level. This
function does not work when this level has
been set to 0.00.
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