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3.12. Inverter Wiring

Wiring Precautions

• Do NOT remove any protective covers or attempt any wiring while input power is applied. Connect all

wiring before applying input power. When making wiring changes after power up, remove input power

and wait a minimum of ve minutes after power has been turned off before starting. Also conrm that the

charge lamp is off and that DC voltage between terminals B1/P or (+) and (-) does not exceed 25V, other-

wise electric shock may result.

• Only authorized personnel should work on the equipment. (Take off metal jewelry such as watches and

rings and use insulated tools.), otherwise electric shock or injury may result.

Précautions relatives aux câblages

•  NEPASretirerlescachesdeprotectionnitenterderéaliserdescâblagessoustension.Branchertousles

câblagesavantd’alimenterl’équipement.Encasdemodicationsdescâblagesaprèslamisesousten-

sion,couperl’alimentationetattendreaumoinscinqminutesavantd’intervenir.Vérieraussiqueletémoin

dechargeestéteintetquelatensionCCentrelesterminauxB1/Pou(+)et(-)nedépassepas25V.Le

non-respectdecetteprescriptionpeutentraînerdesrisquesd’électrocution.

•  Seulunpersonnelautorisépeutintervenirsurl’équipement.Eviterdeporterdesbijoux(montres,bagues,

etc.)etutiliserdesoutilsisolés.Lenon-respectdecetteprescriptionpeutentraînerdesrisquesd’électroc-

utionetdeblessures.

(A)Powerinputterminals

1. The Input power supply voltage can be connected in any phase sequence to power input terminals R/L1, S/

L2, or T/L3 on the terminal block.

2. DO NOT connect the AC input power source to the output terminals U/T1, V/T2 and. W/T3.

3. Connect the output terminals U/T1, V/T2, W/T3 to motor lead wires U/T1, V/T2, and W/T3, respectively.

4. Check that the motor rotates forward with the forward run source. If it does not, swap any 2 of the output

cables to change motor direction.

5. DO NOT connect phase correcting capacitors or LC/RC noise lter to the output circuit.

(B)Grounding

1. Connect the ground terminal (E) to ground having a resistance of less than 100Ω.

2. Do not share the ground wire with other devices, such as welding machines or power tools.

3. Always use a ground wire that complies with the local codes and standards for electrical equipment and

minimize the length of ground wire.

4. When using more than one inverter, be careful not to loop the ground wire, as shown below in Fig. 3.12.1.

Figure3.12.1:InverterGrounding

a) Correct

b) Correct

c) Incorrect

Loop

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Warning

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