Hitachi WJ Series

Chapter 9 Inverter Functions
9-11-6
9.11.6 Outputting a Warning When Cooling Fin Temperature Rises
 How to be notified of the temperature rise of the cooling fin before a trip occurs?
 How to cool the system before a temperature error occurs?
 Assigning "Cooling fin overheat warning [OHF] (42)" to one of the output terminal functions
([C021]/[C022]/[C026]) enables the inverter to output a warning signal when the cooling fin is
overheated.
 The temperature of the cooling fin inside the inverter is monitored and the status can be notified
by a signal before a "Cooling fin temperature error [E21]" occurs.
 The "Cooling fin temperature error [E021]" occurs when the cooling fin exceeds the maximum
temperature of 105°C.
Code
Item
Description
Data
[d018]
Cooling fin
temperature monitor
Monitors the temperature of the cooling fin.
-20 to 150.0 (°C)
[C064]
Cooling fin overheat
warning level
Sets the cooling fin temperature which turns on the
cooling fin overheat warning [OHF].
0 to 110 (°C)
[C021]
[C022]
[C026]
Output terminal
function
Cooling fin overheat warning [OHF]:
This signal turns on when the "Cooling fin
temperature monitor [d018]" exceeds the
[C064] setting value.
42
Cooling fin
temperature
monitor [d018]
[OHF] Output
Output current
ON
Cooling fin overheat
warning level [C064]
Q
!
A