Toshiba VF-AS1 instruction manual Ex. Countermeasure inverter wiring

E6581301

(2)Use shielded power cables and control signal cables for the input and output lines of the inverter. Route the cables and wires so as to minimize their lengths. Keep a distance between the power cable and the control cable and between the input and output wires of the power cable. Do not route them in parallel or bind them together, instead cross at right angle.

(3)Install the inverter in an enclosed steel cabinet, it is more effective in limiting the radiation. Using wires as thick and short as possible, earth the control panel securely with a distance kept between the earth cable and the power cable.

(4)To limit the radiation noise from cables, earth each shielded cable to the EMC plate. It is effective to earth shielded cables in the vicinity of the inverter and filter (within a radius of 10cm from each of them). Inserting a ferrite core in a shielded cable is even more effective in limiting the radiation noise.

(5)To further limit the radiation noise, insert a zero-phase reactor in the inverter output line and insert ferrite cores in the earth cables of the EMC and cabinet.

[Ex. Countermeasure - inverter wiring]

Strip and earth the shielded cable, following the example shown in Fig.

Peel off the outer sheath of the cable and fix the shielded part with a metal saddle.

EMC plate (Refer to Table 2.)

9

Control wiring (Shielded cabless) Relay contact output FLA, FLB, FLC

Control wiring (Shielded cabless)

Logic input/output +SU, F, R, S1"S3, RES, ST, NO, P24/PLC, OUT1, OUT2, CC

PG feedback signal line (Shielded cabless)!

4-wire RS485 communication line (Shielded cab

Control wiring (Shielded cabless)!

Analog input VI/II, RR/S4, PP, CCA

Analog output FM, AM, CCA

￿Power supply wiring (Shielded cabless) R/L1, S/L2, T/L3

Braking resistor wiring (Shielded cabless) PA/+, PB ￿

Motor wiring (Shielded cabless) U/T1, V/T2, W/T3

Fig. 1

I-3