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17. APPLICATION OF FUNCTIONS
17 - 54
(a) Parameter setting
Setting [Pr. PX25] and [Pr. PX28] as follows will enable SEMI-F47 function.
Parameter
Setting
value
Description
PX25 _ 1 _ _ SEMI-F47 function selection
PX28 200
Set the time [ms] of the [AL. 10.1 Voltage drop in the control circuit power]
occurrence.
Enabling SEMI-F47 function will change operation as follows.
1) The voltage will drop in the control circuit power with "Rated voltage × 50% or less". 200 ms later,
[AL. 10.1 Voltage drop in the control circuit power] will occur.
2) [AL. 10.2 Voltage drop in the main circuit power] will occur when bus voltage is as follows.
Table 17.6 Voltages which trigger [AL. 10.2 Voltage drop in the main circuit power]
Servo amplifier Bus voltage which triggers alarm
MR-J4-10B(-RJ)
to
MR-J4-700B(-RJ)
158 V DC
MR-J4-11KB(-RJ)
to
MR-J4-22KB(-RJ)
200 V DC
MR-J4-60B4(-RJ)
to
MR-J4-22KB4(-RJ)
380 V DC
3) MBR (Electromagnetic brake interlock) will turn off when [AL. 10.1 Voltage drop in the control
circuit power] occurs.
(b) Requirements conditions of SEMI-F47 standard
Table 17.7 shows the permissible time of instantaneous power failure for instantaneous power
failure of SEMI-F47 standard.
Table 17.7 Requirements conditions of SEMI-F47 standard
Instantaneous power
failure voltage
Permissible time of
instantaneous power
failure [s]
Rated voltage × 80% 1
Rated voltage × 70% 0.5
Rated voltage × 50% 0.2