MASSO Documentation

MASSO G2 Replacing Damaged Optocouplers







Sourcing replacement parts


INFORMATION: Damaged Optocouplers can be purchased from one of the following suppliers, please click the link below to directly jump to the part order page:



Digi-Key: Optocoupler LTV-816


Newark Element 14: Optocoupler KB817


Mouser Electronics: Optocoupler LTV-816





Identifying Optocouplers









Test procedure for Inputs 1 - 32



Test procedure for Spindle Encoder Inputs



Test procedure for MPG Inputs


TESTING procedure for the Estop Input



TESTING procedure for CW & CCW outputs


Replacement Process

WARNING: Ensure that you turn power off to MASSO and observe standard Antistatic precautions before changing an optocoupler.


Caution: Ensure that you observe the correct orientation of the optocoupler when replacing as they are polarity sensitive.