15. MR-J3W-0303BN6 SERVO AMPLIFIER
15 - 54
15.8.2 Power supply capacity and generated loss
Amount of heat generated by the servo amplifier
Table 15.2 indicates the required power supply capacities for main circuit and losses generated under rated
load of the servo amplifier. For thermal design of an enclosed type cabinet, use the values in the table in
consideration for the worst operating conditions. The actual amount of generated heat will be intermediate
between values at rated torque and servo-off according to the duty used during operation. When the servo
motor is run at less than the maximum speed, the required power supply capacity for main circuit will be
smaller than the value in the table, but the servo amplifier's generated heat will not change.
The values in the table shows when the same motor is used for both A-axis and B-axis. When using
different motors for each axis, estimate the values with averages of the motors.
Table 15.2 Power supply capacity and generated loss per servo amplifier at rated output
(Note) Servo amplifier-generated
heat [W]
Servo motor
2
Main circuit
(48VDC/24VDC)
Required power
supply capacity [W]
At rated output
With servo-off
AK0136 460 13
3
AK0236 720 19
3
AK0336 960 27
3
Note. Heat generated during regeneration is not included in the servo
amplifier-generated heat.
15.8.3 Dynamic brake characteristics
POINT
The dynamic brake of MR-J3W-0303BN6 is an electronic type.
Dynamic brake operates at occurrence of alarm, Servo forced stop warning (E6.1),
and Controller forced stop warning (E7.1), and when power is turned off. Do not
use dynamic brake to stop in a normal operation as it is the function to stop in
emergency.
Be sure to enable Forced stop (EM1) after servo motor stops when using Forced
stop (EM1) frequently in other than emergency.
The time constant " " for the electronic dynamic brake will be shorter than that of
normal dynamic brake. Therefore, coasting distance will be longer than that of
normal dynamic brake. For how to set the electronic dynamic brake, refer to
parameter No. PF06 and PF12.
Summary of Contents for MELSERVO-J3W Series
Page 17: ...8 MEMO ...
Page 27: ...1 FUNCTIONS AND CONFIGURATION 1 10 MEMO ...
Page 87: ...4 STARTUP 4 14 MEMO ...
Page 117: ...5 PARAMETERS 5 30 MEMO ...
Page 129: ...6 GENERAL GAIN ADJUSTMENT 6 12 MEMO ...
Page 185: ...10 CHARACTERISTICS 10 8 MEMO ...
Page 241: ...11 OPTIONS AND AUXILIARY EQUIPMENT 11 56 MEMO ...
Page 274: ...13 USING A LINEAR SERVO MOTOR 13 25 1 2 3 4 ...