Mitsubishi Electric MELSERVO-J5 MR-J5 Series User Manual page 153

Timing chart
■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 alarm occurs when the instantaneous power failure time of the control circuit power supply exceeds [Pr. PF25 SEMI-F47
function - Instantaneous power failure detection time (instantaneous power failure tough drive - Detection time)]. MTTR
(During tough drive) turns on after the instantaneous power failure is detected.
MBR (Electromagnetic brake interlock) turns off when the alarm occurs.
ON
Control circuit
OFF
power supply
Bus voltage
*1
Undervoltage level
ON
ALM
(Malfunction)
OFF
ON
WNG
(Warning)
OFF
ON
MTTR
(During tough drive)
OFF
MBR
ON
(Electromagnetic
OFF
brake interlock)
ON
Base circuit
OFF
*1 For the undervoltage level, refer to the following table.
Page 154 Behavior
Instantaneous power failure time of control circuit power supply
[Pr. PF25]
4 APPLICABLE FUNCTIONS
4.1 Tough drive function
4
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