SRV-63 series AC servo drives Wiring instruction
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3.1.1 Requirements on input power cable
The dimension of input power cable shall comply with local regulations.
The input power cable must be able to withstand corresponding load current.
The max rated temperature margin of input power cable should not be lower than 70
℃
under
continuous operation.
See IEC/EN 61800-3:2004 for EMC requirements.
It is recommended to use shielded four-core cable for input cable
Conductor
Sleeve
Insulation
PE
Shielded
layer
Four-core cable with shielded layer
In order to protect the conductors, the crosssection of shielded cable must the same with that of the
phase conductor when the shielded cable and phase conductor use the same material, which will
help reduce grounding resistor to improve impedance continuity.
In order to suppress the emission and transmission of RF, the conductivity of shielded cable must be
at least 1/10 of phase conductor conductivity. The coverage rate of shielded layer must be above 85%
at least.
3.1.2 Requirements on control cable
All the analog control cables and the cables used for frequency input must use shielded cable. The
analog signal cable uses shielded twisted pair (figure a). Each signal adopts a pair of independent
shielded twisted pair. Different analog signal cannot use the same ground wire.
For low voltage digital signal, it is recommended to use double-layer shielded cables, single-layer
shielded pairs or shieldless pairs (figure b), however, for pulse input signal, only shielded cable can
be used.
Communication cable must use shielded twisted pairs.