Hitachi SJ Series User Manual page 409

Chapter 12
12.19.10 Outputting a warning when the
temperature of the cooling fin increases
Ｑ
• I want to know a increase in the temperature of the
cooling fin before a trip occurs.
• I want to cool the system before a thermal error is
generated.
Ａ
• Assign the output terminal function 032 [OHF]
cooling fin heating prewarning 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 temperature error [E021] is generated
by the cooling fin heating prewarning level
function.
Operation example
Output current
[CE-34]
Fin temperature
[OHF]
Parameter
Item
Output terminal function
selection 11-15
Relay output terminal
function selection 16A-16C
Relay output terminal
function selection
AL1-AL0/AL2-AL0
Cooling fin heating
prewarning level
ON
Parameter Data
[CC-01]~[CC-05]
[CC-06]
032
[CC-07]
[CE-34] 0~200(°C)
12-19-12
！
• The temperature error [E021] is generated when
the cooling fin temperature exceeds 120°C.
Description
The cooling fin heating prewarning
signal
[OHF]is output.
OFF: Fin temperature is lower than the prewarning
level.
ON: Fin temperature is equal to or higher than the
prewarning level.
The signal [OHF] is turned on when the cooling fin
temperature is equal to or higher than the set level.
Inverter Function