As a guideline of motor heating conditions, the relationship between the heat sink sizes and deratings of base
current is shown in a graph in:
Servomotor Heating Conditions in Rotary Servomotors General Instruction in Σ-V Series Product Catalog
(KAEP S800000 42).
Set Pn52C to a value in accordance with the heat sink size and derating shown in the graph, so that an overload
alarm can be detected at the best timing to protect the motor from overloading.