User Manual Of EL7-EC** AC Servo
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Connection of a regenerative resistor
2.4.2 Wire Gauge for Main Power Supply
Table 2-6 Main power supply wire gauge
Driver
Wire diameter (mm
2
/AWG)
L1 L2
P+ BR
U V W
PE
EL7-EC400F
0.81/AWG18
2.1/AWG14
1.3/AWG16
2.1/AWG14
EL7-EC750F
0.81/AWG18
2.1/AWG14
1.3/AWG16
2.1/AWG14
EL7-EC1000F
0.81/AWG18
2.1/AWG14
2.1/AWG14
2.1/AWG14
Grounding: Grounding wire should be thicker. Ground PE terminal of servo drive and
servo motor together with resistance <100 Ω.
A 3-phase isolation transformer is recommended to lessen the risk of electrocution
Connect a line filter to power supply to reduce electromagnetic interference.
Please install a fuseless circuit breaker to cut off power supply in time when the
driver fails
.