The tightening torque of the input terminal connecting screws [N·m] is as follows:
M4 = 1.2, M5 = 2.0, M8 = 5.5

The tightening torque of the output terminal connecting screws [N·m] is as follows:
PCR500LE: M4 = 1.4, PCR1000LE/PCR2000LE: M4 = 1.2,
PCR3000LE/PCR4000LE: M5 = 2.0, PCR6000LE/PCR9000LE: M8 = 5.5