Mitsubishi Electric MELSERVO-J5 User Manual page 210

Ac servo system

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■When the instantaneous power failure time of the control circuit power supply < [Pr. PF25

SEMI-F47 function - Instantaneous power failure detection time (Instantaneous power failure

tough drive detection time)]

The operation status differs depending on how much the bus voltage decreases.

• When the bus voltage does not decrease to the undervoltage level or lower within instantaneous power failure time of

control circuit power supply

The operation continues without generating an alarm.

Control circuit

power supply

Undervoltage level

(Malfunction)

(Electromagnetic

brake interlock)

Base circuit

*1 For the undervoltage level, refer to the following table.

Page 210 Behavior

4 APPLICABLE FUNCTIONS

4.1 Tough drive function

Instantaneous power failure time of control circuit power supply