IAI PSA-24, Instruction Manual

Page: 54 / 84

5.1 Preventive Maintenance Function
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● Switch overload error threshold
The rated current changes depending on whether a fan is connected or not, so the internal
overload error threshold is also switched after detecting the fan connection. If fan abnormal
rotation speed is detected, there is a possibility of significant decrease in life or failure of
continuous operation, so the threshold value for overload error will be forcibly switched to the
threshold for continuous rated output 204W (without fan).
● Fan ON/OFF control by internal temperature
When the ambient temperature is low or when the environment has capacity for more load, the
internal temperature sensor
may turn the fan ON/OFF in order to extend its life. The ON/OFF
control specifications of the fan using an internal temperature sensor are as follows.
Item Specifications
ON Continues for 10 seconds at 60°C or higher
OFF Continues for 10 seconds at 50°C or below