Epson/Seiko SRC-320 ABS, Manual

Page: 109 / 176

Maintenance 4. PSU Board
95
4.4 ENC+5V (encoder 5V) power supply adjustment
„
Only trained personnel should be allowed to perform the following operations.
Trained personnel are those who have taken a robot training course (held by
the dealer) or those who have carefully read the manuals and have equivalent
knowledge or skill.
1) Turn the controller OFF.
2) Disconnect the power connector X131 of the axis #3 motor of the manipulator. (Refer
to the chapter of “Replacing the Motors” in the manipulator manual.)
3) For safety reasons, set the controller in TEACH mode, then turn ON the controller.
4) Pull the X31 connector closest to the servo-motor’s encoder of the manipulator to the
outside. Refer to the wiring schematics (“Outline of connection” and “Block dia-
gram”) in the manipulator manual. There is no need to disconnect the X31 connector.
5) Measure the voltage at “EGND” and “ENC+5V” of the X31 connector that you pulled
out. (without disconnecting) Check that the voltage is between 4.80V and 5.05V.
Manipulator EGND ENC+5V Standard
BN, BL(-CL), XM3000, RT3300 pin No. 8 pin No. 7
ES, EL, EC, EH, BNA(-CL) pin No. 13 pin No. 12
4.80V to 5.05V
6) If the voltage is not within the specified range, turn the controller OFF, then pull out the
PSU board and adjust its variable resistor (RV1) as follows:
When the voltage is low : turn “RV1” clockwise 1/2 graduation.
When the voltage is high : turn “RV1” counterclockwise 1/2 graduation.
After adjusting the variable resistor, firmly insert the PSU board back into the desig-
nated slot (labeled “PSU”) and repeat steps 4) to 6).
7) If the voltage value is within the specified range, turn the controller OFF and attach the
X131 connector to the axis #3 motor.
8) Return the connectors X31 and X131 to its original position referring the chapter of
“Replacing the Motors” in the manipulator manual.
9) If you pulled out the PSU board, be sure to re-tighten its upper and lower set-screws.
WARNING