MainCircuit Wiring
★
★
★
Wiring canonlybedone after themains input is cut off, otherwisetherewill be danger ofelectric
sh o ck!
Onlyqualifi ed and traine d engineer can perform th e wiring, otherwisethere will be danger of
el ectri c sh ock !
Grounding cablemust be grounded, othe rwisethere will be dange rof elec tric shock or fire!
★
★
★
★
Pleaseconfirm thema ins voltage leve l is same with t hat o f thei nverte r,otherwise the inverter
may be dam aged !
Makesure the ratings of the drivenmotor are in compliancewith the inverter, otherwise the
motorma y be da maged or the inv erter maybe in protection st atus!
Do not confuse the i nput terminals with theoutput terminals (U, V, W),ot herwise the re will be
danger of damaging the inverter!
Brake r esistor c an not be c onne cted be tween th e DC bus termin als (+) and (-), o therwis e fi re
mayocc ur!
1
）
Main Circuit Terminals of Inverter
Terminals
RST(LN)
、、 、
UVW
、、
E
ACinput line terminals
Mo tor connect ion
Ground
Descri ption
BR+ BR-
、
Connectionfor t he braking resistor (option)
2
）
Notes on Wiring
A. Input powe rsupply L and N orR, S a nd T:
There is nophase-ration requirementfor the inputof inverter.
-12-
Danger
Dan ger
C.Brak e re sistor termina ls of BR + BR-
The br a ke resi stor term inal is effec tive only f or th e inverte r of 15 k W or below a nd has a bu ilt-i n bra ke
unit . Select therecommendedresistor with the cable length o flessthan 5m, otherwisethe invertermay
burnor bedamaged.
D. Inve rter output U, V a ndW:
Inverter output terminals cannot connect t o capacit ors or surge snub devices, otherwise the invertermay
be in protecti ve statusor damaged.
If the cables betweenthe motorand t heinverter are too long, electrical resonance may occur due tothe
distr ibut ed capacitance,w hich ma y resultin damaging the mo tori nsulation or big l eaka ge current, so if
the cab le l e ng th is long e r t han 10 0m , AC reactor must b e instal led.
（ ）、（ ）：
-11-
INPUT
RT
S
BR+
BR-
R
MOTOR
U
VW
L
()
N
()
Fig.3 -4 Termi nal Diagra m
Cha pt er 3 M e ch anic al and Electri cal Instal lation
DZB Series
Chapter 3 Mechanical and Ele ctrical In stallation
DZB Series
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