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15. SERVO AMPLIFIERS WITH A LARGE CAPACITY
(
30k TO 55kW
)
(b) 400V class
Drive unit
Item
MR-J3-DU 4
30KA 37KA 45KA 55KA
Output
Rated voltage 3-phase 323VAC
Rated current [A] 87 102 131 143
Control power
supply
Voltage, frequency 1-phase 380 to 480VAC, 50/60Hz
Rated current [A] 0.2
Permissible voltage
fluctuation
1-phase 323 to 528VAC
Permissible frequency
fluctuation
Within
5
Power consumption [W] 45
Main circuit power supply The main circuit power of the drive unit is supplied by the converter unit.
Interface power
supply
Voltage 24VDC
10
Power supply capacity
[A]
(Note 1) 0.3
Control system Sine-wave PWM control, current control system
Dynamic brake External option (Note 2)
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
Position control
mode
Max. input pulse frequency 1Mpps (for differential receiver), 200kpps (for open collector)
Command pulse multiplying factor Electronic gear A: 1 to 1048576
,
B: 1 to 1048576, 1/10 A/B 2000
In-position range setting 0 to 10000 pulse (command pulse unit)
Error excessive 3 revolutions
Torque limit Set by parameter setting or external analog input (0 to 10VDC/maximum torque)
Speed control
mode
Speed control range Analog speed command 1: 2000, internal speed command 1: 5000
Analog speed command input 0 to 10VDC / Rated speed
Speed fluctuation ratio
0.01 or less (load fluctuation 0 to 100 )
0
or less (power fluctuation 10 )
0.2 max.(ambient temperature 25 10 ) for external speed setting only
Torque limit Set by parameter setting or external analog input (0 to 10VDC/maximum torque)
Torque
control
mode
Analog torque command input 0 to
8VDC / Maximum torque (input impedance 10 to 12k )
Speed limit Set by parameter setting or external analog input (0 to 10VDC/Rated speed)
Compliance to standards
CE (LVD: IEC/EN 50178, EMC: IEC/EN 61800-3)
UL (UL 508C)
Structure Force-cooling, open(IP rating: IP00)
Environmental conditions
Ambient
temperature
In operation
[
] 0 to 55 (non-freezing)
[ ] 32 to 131 (non-freezing)
In storage
[
] 20 to 65 (non-freezing)
[ ] 4 to 149 (non-freezing)
Ambient
humidity
In operation
90
RH or less (non-condensing)
In storage
Ambient
Indoors (no direct sunlight)
Free from corrosive gas, flammable gas, oil mist, dust and dirt
Altitude Max. 1000m above sea level
Vibration 5.9 [m/s
2
] or less at 10 to 55Hz (directions of X, Y and Z axes)
Mass
[kg] 18 26
[lb] 39.7 57.3
Note 1. 0.3A 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.
2. Use an external dynamic brake for the drive unit. Failure to do so will cause an accident because the servo motor does not stop
immediately but coasts at an emergency stop and such conditions. Ensure the safety in the entire system.