DELTA ELEKTRONIKA BV
SM3000
Page 4 - 8
OPERATING MAINTENANCE TROUBLE SHOOTING CALIBRATING
1991, rev. May 2008
CALIBRATION
1)
GEN ERAL
•
The power supplies are factory cali-
brated and nor
mally need no further
cal i bra tion.
2)
METER CAL I BRA TION
•
DIG I TAL ME TERS
The zero indication can be calibrated
with R712 and R716, the full scale in di-
cation can be calibrated with R706 and
R708 on P388 (see fig. 4 - 19).
3)
SPE CIAL CAL I BRA TIONS
•
The fol low ing cal
i bra tions must be
done by qual i fied per
son nel only.
Wrong cal i bra tion causes mal func tion.
These cal ibrations are only needed af -
ter spe cial re pairs.
Warn ing !
Dam age
caused by wrong cal ibration is not war -
ranted.
•
CAL I BRAT ING MAX. CUR RENT
RANGE or CAL IBRATING CC MON I-
TOR FULL SCALE.
The max. out put cur rent can be cali-
brated with R686. R686 is lo cated on
P432 (see fig. 4 - 20).
Program CC in put with exactly 5.00 V.
Set output voltage to a low value, en -
suring the power supply is in CC mode.
Measure the output cur rent with an ac -
curate shunt. Cal ibrate the cur rent with
R686 ex actly on the rated max. cur rent.
Warn ing!
Wrong calibration can dam -
age the unit.
•
CAL I BRATING THE CC MON I TOR
OFF SET.
With R652 on P384 the offset of the CC
mon i tor volt age can be cal i brated (see
fig. 4 - 21). The unit has to be un loaded,
the out put voltage set on a low value.
Measure the offset voltage of the CC
mon i tor on the prog. con nec tor. Cal i -
brate the off set on a neg ative value be -
tween –10 mV and zero mV.
Warn ing!
wrong cal i bra tion can
damage the unit.
4)
SPARE PARTS
•
When or
dering spare parts please
state: Model, Se rial num ber, Compo-
nent num ber and Com ponent de scrip-
tion.
Ex am ple:
-
Model .............SM 30-100 D
-
Se rial no. ........Sn821701900017
-
BSU no...........Bs816802900036
-
Com po nent.....D300
-
Description. ....BYV52-PI-200
fig. 4 - 19 Me ter cal ibration with 25-turn potmeters on P388
fig. 4 - 20 Calibrating max. current on P432
fig. 4 - 21 On P384, CC mon itor can be calibrated
