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Setup & Operation 2.5 Four-axis Drive Unit (Part Names and Functions)
(1) DMB (Drive Main Board):
(2) Regeneration module (For RC520DU):
(3) Motor Driver module:
(4) Switching Power Supply:
(5) Cooling Fan:
(6) Filter:
NOTE
(7) DPB (Drive Power Board):
(8) Motor Power module:
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The Drive Main Board receives position references from the Control Unit and
thereby drives the motors.
This module protects the circuit from the regenerated electricity when the
Manipulator consumes high electric power during operation.
A regeneration module is mounted in the place indicated with a broken line above.
The Motor Driver module receives a reference from the DMB, and, outputs
three-phase current to supply power to the motor. (The figure in the previous page
shows a sample of Drive Unit for a 4-axis Manipulator. From left to right: Axis 1
through 4.)
The supplied AC200V (or the local equivalent) power is regulated here and is output
as +24V.
A standard model comes with one cooling fan in the four-axis Drive Unit. For the
four-axis Drive Unit equipped with the Regeneration module that generates more
heat, an additional cooling fan is packaged.
A protective filter is installed in front of the fan to filter out dust.
Check condition of the filter regularly and clean it as necessary. A dirty filter may
result in the malfunction of the robot system as the temperature rises in the Drive
Unit.
The Drive Power Board consists of two circuits: one generates +24V control power
and the other distributes the main power source to each motor driver that drives the
axes.
This module rectifies AC200V (or the local equivalent) power to output power for
the motor.
RC520 Rev.7
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