Leadshine EL8-EC Series User Manual page 46

external regenerative resistor with higher power rating.

If d14 is overly large or increasing too fast, reduce regenerative energy power rating
or use an external regenerative resistor with higher power rating.

If driver overvoltage alarm (Er120) occurs, please use an external regenerative
resistor with lower resistance or connect another resistor in parallel.
Please take following precautions before installing an external regenerative resistor.
1. Please set the correct resistance value in Pr0.16 and resistor power rating Pr0.17 for
the external regenerative resistor.
2. Please ensure the resistance value is higher or equals to the recommended values in
table 2-3. Regenerative resistors are generally connected in series but they can also be
connected in parallel to lower the total resistance.
3. Please provided enough cooling for the regenerative resistor as it can reach above 100℃
under continuous working conditions.
4. The min. resistance of the regenerative resistor is dependent on the IGBT of the
regenerative resistor circuit. Please refer to the table above.
User manual of EL8-EC***F AC Servo
46