Input Power Cable Requirements; Control Cable Requirements - INVT DA180-S2R8SG0 Operation Manual

DA180 series basic AC servo drive

3.1.1 Input power cable requirements

The input power cable dimensions must comply with local regulations.

The input power cable must be able to withstand the load current.

The maximum rated temperature margin of the input power cable cannot be lower than 70° C
under continuous running.

The PE grounding conductor and phase conductor are the same in conductivity (since they are
the same in cross-sectional area).

See IEC/EN 61800-3:2004 for EMC requirements.
The shielded four-core cable is recommended as the input power cable.
When the shielded cable and phase conductor use the same type of material, in order to protect the
conductors properly, the shielded cable and phase conductor must be the same in cross-sectional
area, which helps reduce grounding resistance to improve impedance continuity.
To suppress the emission and transmission of RF, the conductivity of the shielded cable must be at
least 1/10 of phase conductor conductivity. The shielded-layer coverage rate must be at least 85%.

3.1.2 Control cable requirements

All analog control cables and cables used for frequency input must be shielded cables. Analog signal
cable use double-shielded twisted pairs (shown in figure a). Each type of signal occupies an
independent shielded twisted pair. Different types of analog signal must occupy different grounding
wires.
Multiple double-shielded twisted pairs
For low voltage digital signals, double-layer shielded cables are recommended, though unshielded
pairs or single-shielded pairs (shown in figure b) can be used. However, for pulse input signals, only
shielded cables can be used. Only shielded twisted pairs can be used as communication cables.
Four-core cable with shielded layer
PE
Multiple single-shielded twisted pairs
-22-
Shielded
layer
Conductor
Sleeve
Insulation
Wiring instructions