Specifications

7
 Servo amplifier specifications (400VAC, 30kW or larger)
z Drive unit
MR-J3-DUS4
Drive unit model
30KB 37KB 45KB 55KB
Compatible converter unit model MR-J3-CR55K4
Voltage/frequency (Note 1)
Permissible voltage fluctuation
Main
circuit
power
supply
Permissible frequency
fluctuation
The drive unit’s main circuit power is supplied from the converter unit.
Voltage/frequency 1-phase 380 to 480VAC 50/60Hz
Permissible voltage fluctuation 1-phase 323 to 528VAC
Permissible frequency
fluctuation
±5% maximum
Control
circuit
power
supply
Power consumption (W) 45
Interface power supply 24VDC±10% (required current capacity: 200mA (including CN8 connector signals) (Note 3))
Control system Sine-wave PWM control/current control system
Dynamic brake External option
Safety features
Overcurrent shutdown, overload shutdown (electronic thermal), servo motor overheat protection,
encoder fault protection, undervoltage/sudden power outage protection, overspeed protection,
excess error protection
Response performance 20ms or less (STO input OFF → energy shut off)
Safety function STO (EN IEC 61800-5-2)
Safety performance EN ISO 13849-1 PL d (Category 3), IEC/EN 61508 SIL 2, EN 62061 SIL CL 2
Compliance to standards
CE (LVD: EN 50178, EMC: EN IEC 61800-3)
UL (UL 508C)
Structure Fan-cooling, open (IP00)
Ambient temperature 0 to 55°C (32 to 131°F) (non freezing), storage: -20 to 65°C (-4 to 149°F) (non freezing)
Ambient humidity 90% RH maximum (non condensing), storage: 90% RH maximum (non condensing)
Atmosphere Indoors (no direct sunlight); no corrosive gas, inflammable gas, oil mist or dust
Elevation 1000m or less above sea level
Environ-
ment
Vibration 5.9m/s
2
or less at 10 to 55Hz (directions of X, Y and Z axes)
Mass (kg [lb]) 18 (40) 26 (57)
z Converter unit
Converter unit model MR-J3-CR55K4
Compatible drive unit model
MR-J3-DUS4
30KB 37KB 45KB 55KB
Voltage/frequency (Note 1, 2) 3-phase 380 to 480VAC 50/60Hz
Permissible voltage fluctuation 3-phase 323 to 528VAC
Main
circuit
power
supply
Permissible frequency
fluctuation
±5% maximum
Voltage/frequency 1-phase 380 to 480VAC 50/60Hz
Permissible voltage fluctuation 1-phase 323 to 528VAC
Permissible frequency
fluctuation
±5% maximum
Control
circuit
power
supply
Power consumption (W) 45
Interface power supply 24VDC±10% (required current capacity: 130mA (Note 3))
Safety features
Regeneration overvoltage shutdown, regeneration fault protection,
overload shutdown (electronic thermal), undervoltage/sudden power outage protection
Compliance to standards
CE (LVD: EN 50178, EMC: EN IEC 61800-3)
UL (UL 508C)
Structure Fan-cooling, open (IP00)
Ambient temperature 0 to 55°C (32 to 131°F) (non freezing), storage: -20 to 65°C (-4 to 149°F) (non freezing)
Ambient humidity 90% RH maximum (non condensing), storage: 90% RH maximum (non condensing)
Atmosphere Indoors (no direct sunlight); no corrosive gas, inflammable gas, oil mist or dust
Elevation 1000m or less above sea level
Environ-
ment
Vibration 5.9m/s
2
or less at 10 to 55Hz (directions of X, Y and Z axes)
Mass (kg [lb]) 25 (55)
Notes: 1. Rated output and speed of a servo motor are applicable when the drive unit and converter unit, combined with the servo motor, are
operated within the specified power supply voltage and frequency. Torque drops when the power supply voltage is below the specified
value.
2. For torque characteristics when combined with a servo motor, refer to the section “Servo motor torque characteristics” in “MELSERVO-J3
catalog L(NA)03017”.
3. The interface power supply can be shared with the drive unit and converter unit. When all of the input/output points are used, 200mA is
required for the drive unit, and 130mA is required for the converter unit. The current capacity can be stepped down according to the number
of input/output points in use.