EURA SD20-G Series, Manual

Page: 57 / 353

SD20-G Series
57
4.1.4 Precaution for main circuit wiring
1. Don’t connect input cable to U/V/W, or else, servo drive will be damaged.
2. When user conects external resistor, please remove the wire between B2 and B3 and connect external resistor
between B1 and B2. Wrong wiring may damage servo drive.
3. Don’t connect braking resistor between B1 and N+(N-), it will cause fire.
4. When cable is bundled and put in pipe, please consider reduction rate of allowable current for heat
dissipation.
5. On high temperature condition, please select heat-resisting cable, common cable may be aged in a short time.
In low temperature environment, please make thermal insulation for cable, common cable is easy to harden
and crack.
6. Make sure that bending radius of cable is more than 10 times of outer diameter to prevent cable core break.
7. Don’t put power cable and signal cable in one pipe or bundle them together. Distance of the two cables should
be more than 30cm to avoid interference.
8. Servo drive remains high voltage after power off, don’t touch power terminal for 5 minutes.
9. Please select earth wire with same area of main circuit.
10. Please ground servo drive reliably.
11. Don’t power on when terminal screw or cable is loose, it will cause fire.
12. Only qualified personnel can connect the wiring.
13. To avoid electric shock or injury, when servo drive is powered off, please wait more than 5 minutes and
indicator ‘Charge’ goes out, confirm there is no voltage between B1/P and N+/— by multimeter. Then user
can disconnect or install servo drive.
14. Don’t damage cable by hanging weight or extruding.
15. Make sure other wire and installation meet local regulations.