Hitachi SJ Series User Manual page 407

Chapter 12
12.19.8 Outputting a warning before
thermal protection of the motor
Ｑ
• 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.
Ａ
• 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)
Output current
Motor thermal
integrated value
[THM]
Parameter
Item
Output terminal function
selection 11-15
Relay output terminal function
selection 16A-16C
Relay output terminal function
selection AL1-AL0/AL2-AL0
Electronic thermal warning
level
(motor)
[CE-30]
Parameter
[CC-01]~[CC-05]
[CC-06]
[CC-07]
[CE-30]
12-19-10
！
• 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."
ON
Data
The thermal warning signal [THM] of the
motor is output.
OFF: The motor thermal integrated value
026
is smaller than the level.
ON: The motor thermal integrated value is
equal to or larger than the level.
The signal [THM] is turned on when the
thermal integrated value of the motor is
0.00~100.00(%) equal to or larger than the set level. This
function does not work when this level has
been set to 0.00.
Inverter Function
Description