Mitsubishi Electric MR-J4, Instruction Manual

Page: 644 / 794

18. MR-J4-03A6 SERVO AMPLIFIER
18 - 3
18.1 3 Servo amplifier standard specifications
Model MR-J4-03A6
Rated output 30 W
Output
Rated voltage 3-phase 13 V AC
Rated current [A] 2.4
Voltage 48 V DC/24 V DC (Note 5)
Main circuit
power supply
input
Rated current
For 48 V DC: 1.2 A
For 24 V DC: 2.4 A
Permissible voltage
fluctuation
For 48 V DC: 40.8 V DC to 55.2 V DC
For 24 V DC: 21.6 V DC to 26.4 V DC
Power supply capacity Refer to section 18.7.2.
Inrush current Refer to section 18.7.4.
Voltage 24 V DC
Control circuit
power supply
input
Rated current [A] 0.2
Permissible voltage
fluctuation
21.6 V DC to 26.4 V DC
Power consumption [W] 5.0
Inrush current [A] Refer to section 18.7.4.
Interface
power supply
Voltage 24 V DC ± 10%
Current capacity [A] 0.3 (Note 1)
Control method Sine-wave PWM control, current control method
Permissible regenerative power of servo
amplifier built-in regenerative resistor [W]
0.7
Dynamic brake (Note 4) Built-in (electronic dynamic brake)
Communication function
USB: connection to a personal computer or others (MR Configurator2-compatible)
RS-422: 1 : n communication (up to 32 axes)
Encoder output pulses Compatible (A/B/Z-phase pulse)
Analog monitor Two channels
Max. input pulse
frequency
4 Mpulses/s (for differential receiver) (Note 3), 200 kpulses/s (for open collector)
Position
control mode
Positioning feedback
pulse
Encoder resolution (resolution per servo motor revolution): 18 bits
Command pulse
multiplying factor
Electronic gear A:1 to 16777215, B:1 to 16777215, 1/10 < A/B < 4000
In-position range setting 0 pulse to ±65535 pulses (command pulse unit)
Error excessive ±3 rotation (this can be changed from parameter setting)
Torque limit Set by parameter setting or external analog input (0 V DC to +10 V DC/maximum torque)
Speed control range Analog speed command 1: 2000, internal speed command 1: 5000
Speed control
mode
Analog speed command
input
0 to ±10 V DC/rated speed (The speed at 10 V is changeable with [Pr. PC12].)
Speed fluctuation ratio
±0.01% or less (load fluctuation 0% to 100%), 0% (power fluctuation ±10%), ±0.2% or
less (ambient temperature 25 °C ± 10 °C) when using analog speed command
Torque limit Set by parameter setting or external analog input (0 V DC to +10 V DC/maximum torque)
Torque
control mode
Analog torque command
input
0 V DC to ±8 V DC/maximum torque (input impedance 10 k Ω to 12 k Ω )
Speed limit Set by parameter setting or external analog input (0 V DC to 10 V DC/rated speed)
Protective functions
Overcurrent shut-off, regenerative overvoltage shut-off, overload shut-off (electronic
thermal), servo motor overheat protection, encoder error protection, regenerative error
protection, undervoltage protection, instantaneous power failure protection, overspeed
protection, and error excessive protection