Inspecting The Switching Power Supply Module - Epson RC520 Manual

5.3.3 Inspecting the Switching Power Supply Module

The Switching Power Supply module rectifies AC200V (or the local equivalent) and
outputs +24V. The +24V is converted by the DPB to supply power to: VCC ( + 5V), the
motor driver (±5V) and the encoder (5V).
Inspect the Switching Power Supply module by following the steps as described below:
(1) Turn ON the four-axis Drive Unit(s).
(2) Check that the four-axis Drive Unit's front panel POWER LED (green) is ON.
NOTE NOTE NOTE
If this LED is either OFF or dim, suspect that the + 24V power output is not normal.
(3) Check on the four-axis Drive Unit's front panel to make sure that the LED (green) on
When this lamp is OFF, either the + 24V or + 5V power output may not be normal, or the
NOTE
+ 24V power voltage may be too low.
RC520 Rev.7
the left of and behind the ERROR LED (red) is ON.
DRIVE UNIT
1 2 ERROR RUN
(3) LED (green)
Maintenance 5. Four-axis Drive Unit
MOTOR
E-STOP POWER POWER
(2) POWER LED (green)
149