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13. SERVO AMPLIFIERS WITH A LARGE CAPACITY (30k TO 55kW)
(b) 400V class
Model
Item
MR-J3-DU30KB4 MR-J3-DU37KB4 MR-J3-DU45KB4 MR-J3-DU55KB4
Voltage/frequency 1-phase 380 to 480VAC, 50/60Hz
Permissible voltage
fluctuation
1-phase 323 to 528VAC
Permissible frequency
fluctuation
Within
5%
Control power
supply
Power consumption 45W
Main circuit power supply The main circuit power of the drive unit is supplied by the converter unit.
Voltage 24VDC 10% Interface power
supply
Power supply capacity (Note)150mA
Control system Sine-wave PWM control, current control system
Dynamic brake External option
Protective function
Overcurrent shut-off, overload shutoff (electronic thermal protector)
Servo motor overheat protection, encoder error protection, undervoltage
Instantaneous power failure protection, overspeed protection
Excessive error protection
Structure Force-cooling, open(IP00)
[ ] 0 to 55 (non-freezing)
In operation
[
] 32 to 131 (non-freezing)
[ ] 20 to 65 (non-freezing)
Ambient
temperature
In storage
[
] 4 to 149 (non-freezing)
In operation Ambient
humidity
In storage
90%RH or less (non-condensing)
Ambient
Indoors (no direct sunlight)
Free from corrosive gas, flammable gas, oil mist, dust and dirt
Altitude Max. 1000m above sea level
5.9 [m/s
2
] or less
Environment
Vibration
19.4 [ft/s
2
] or less
[kg] 18 26
Mass
[lb] 39.7 57.3
Note. 150mA is the value applicable when all I/O signals are used. The current capacity can be decreased by reducing the number of
I/O points.