Mitsubishi Electric MR-JET User Manual page 85

■Instantaneous power failure time < [Pr. PF25 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 the instantaneous power failure time, the
operation continues as is without setting off the alarm.
ON
Power supply
OFF
Bus voltage
Undervoltage level
(158 V DC)
ON
ALM
(Malfunction)
OFF
ON
WNG
(Warning)
OFF
ON
MTTR
(Tough drive in progress)
OFF
ON
MBR
(Electromagnetic brake
OFF
interlock)
ON
Base circuit
OFF
Time for instantaneous power failure
[Pr. PF25]
4 APPLICABLE FUNCTIONS
4.1 Tough drive function
4
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