Adjusting Encoder Voltage - Epson RC520 Manual

5.5.2 Adjusting Encoder Voltage

You may adjust the Encoder Power Supply voltage using control VR1 as follows:
(1) Turn ON the Drive Unit and Control Unit to boot the Controller while pressing the
(2) Measure the voltage between the encoder +5V and the GND pin on the Encoder
(3) Remove the Top Cover of the four-axis Drive Unit by taking out the eight screws.
(4) If the measured voltage is lower than 4.9V, turn VR1 on the DPB in the "+" direction
(5) Repeat step (2) to ensure that the voltage is between 4.9V and 5.2V.
(6) If necessary, repeat steps (4) and (5) until the voltage is within the range of 4.9V to
(7) When the adjustment has been completed, place the Top Cover back on.
RC520 Rev.7
Emergency Stop switch. Make sure that the encoder power is being supplied by
checking LED1 on the Manipulator's relay board. (The LED must be ON.)
Signal connector of the longest motor cable in the Manipulator. (As for which pins
to use, refer to the Manipulator manual.) If the encoder voltage is not within the
range of 4.9V to 5.2V, adjust it as follows:
by 1/2 turn to increase the voltage. If the measure voltage is higher than 5.2V, turn
VR1 in the "-" direction by 1/2 turn to lower the voltage.
-
5.2V.
Maintenance 5. Four-axis Drive Unit
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