m otor driver inverte r reset
Ad just the power sup ply or
remove the peripheral
p ower- supply loo p fault
Re place the d amage d rect ify ing
bridg e or the b ufferin g resistor
Tran sie nt powe r cu t exists or not
Check if the in put end vo ltage of
the mot or driver inve rte r is with in the
value req uired by the re gulation
Measure if the DC
bu s voltage is no rma l
Check if the ma in control
boa rd is no rmal
Check if the rectifyin g bridge
or th e buffering resis tor is normal
Check if t he d ri ve board is n orm al
Chang e main control bo ard
Chang e drive bo ard
Refere nce for the
m ain tena nce personne l
Yes
No
No
No
No
N o
Yes
N o
Yes
Yes
Yes
1. Under voltage of D C Bus(E001)
2. Over voltage during acc el eration(E002)
Ad just the voltage within
the normal range
C an cel t he ext erna l fo rce
o r insta ll th e bra ke resisto r
I ncrease t he acce lera tion
time
Insta ll the brake unit a nd
resisto r
T he inp ut voltage is to o high or n ot
If the re exists th e e xterna l force
driving t he mot or op era tio n durin g
the acceleration pr ocess
Th e acceleration time is too sho rt or no t
Is there a ny brake unit
or brake resistor installed
Seek techn ical supp ort
Yes
Yes
Yes
No
No
No
No
Yes
Chapter 7 F ault Diagnosis and Counte rmeasures
DZB Series
-7 2 -
DZ B200
has 25 pie ces of alarm information and protec ti on func ti ons in t otal. Once the fault occurs,
the protecti on functi on starts, the inverter stops input ti ng, t he fault rel ay contact poi nt is a ctivated, and the
faul t code wil l be di splayed on the display panel of the invert er. Before seeking services , the subscri ber
may conduct the self-check according to the prompt gi ven in thi s section, analyze the fault caus es , a nd fi nd
out the s oluti ons. If t he faul t bel ongs to the causes described in t he broken line box, pl ease s eek t he s ervice
by contacting the inverter agent or directly conta cting our corporation.
Common Faults and the Faul t Diagnosis
The following faults may probabl y occur during t he usi ng of t he inverter, please refer to the methods
des cribed bel ow to perform the faul t analys is.
1. No Electricity Display
1) Chec k wit h mult imeter i f the i nput power supply of the inverter is consist ent with its rate d vol tage.
If the re is somet hing wrong with the power s upply, pleas e chec k and remove it.
2) Chec k i f the three-phase rectifying bridge is intact . If t he rectifying bridge has been exploded,pl ease
seek technical service.
3) Chec k i f the CHARGE indicator is on. If the indica tor is off, t he faul t wi ll be on the recti fying bri dge
or the buffering res ist ance. If the indicat or is on, then the fault may probably lies in the switch on/off part,
pleas e seek for help.
2. The air Sw it ch Trips off After Power-on
1) Chec k i f the earthing or short circuit occurs bet ween the i nput power s uppli es and remove t he problem.
2) Chec k i f the rectifying bridge has been broken down. If so, seek for the servi ce.
3. The Mot or Does not R un After the Inverter S tarts to Run
1) Chec k i f there is equa li zing t hree-phase input bet ween U, V and W. If yes, the motor circuit or itsel f
may be damaged, or t he motor stops turning for mechani cal reason. Please remove it .
2)If there is input but the t hree phases are not equalizing, the i nverter drive board or the output modul e
may be damaged. P leas e seek for the service.
3) If t here i s no out put volt age, the dri ve board or output modul e may be damaged. Please seek for t he
servi ce.
4. W hen the Power-on Inverter Displays Normall y, t he Air Swi tch Trips off After t he Opera ti on.
1) Chec k i f the short circuit occurs between t he output modules. If ye s, please seek t he service.
2) Chec k i f the short circuit or e art hing occurs bet ween the mot or lea d wires. If yes, please remove it .
3) If t he tripping occurs only occasi onally and the dist ance between the motor and the inverter is bi g,
the n the adding of a n out put AC reac tor shall be considered.
Chapter 7 Fault Diagnosis and Countermeasures
Cha pter 7 Fault Dia gno sis and Countermeasure s
DZB Series
- 71-
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