Mitsubishi Electric MELSERVO-JE MR-JE-70A Instruction Manual page 219

7. SPECIAL ADJUSTMENT FUNCTIONS
(2) Instantaneous power failure time < [Pr. PF25 SEMI-F47 function - Instantaneous power failure detection
time (instantaneous power failure tough drive - detection time)]
Operation status differs depending on how bus voltage decrease.
(a) When the bus voltage decreases lower than 158 V DC within the instantaneous power failure time
[AL. 10 Undervoltage] occurs when the bus voltage decrease lower than 158 V DC regardless of the
enabled instantaneous power failure tough drive.
Power supply
Bus voltage
Undervoltage level
(158 V DC)
ALM
(Malfunction)
WNG
(Warning)
MTTR
(During tough drive)
MBR
(Electromagnetic
brake interlock)
Base circuit
Instantaneous power failure time
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
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[Pr. PF25]