Delta Elektronika SM120-25D - Calibration Procedures and Spare Parts

OPERATING - TROUBLE SHOOTING - CALIBRATING SM3000
Page 4 - 8 DELTA ELEKTRONIKA B.V. rev. February 2018
CALIBRATION
1) GEN ERAL
• The power sup plies are fac tory cal i brated
and nor mally need no fur ther cal i bra tion.
2) METER CAL I BRA TION
• DIG I TAL ME TERS
The zero in di ca tion can be cal i brated with
R712 and R716, the full scale in di ca tion can
be cal i brated 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 i bra tions are
only needed af ter spe cial re pairs. Warn ing !
Dam age caused by wrong cal i bra tion is not
war ranted.
• CAL I BRATING MAX. CUR RENT RANGE
or CAL I BRATING CC MON I TOR FULL
SCALE.
The max. out put cur rent can be cal i brated
with R686. R686 is lo cated on P432 (see
fig. 4 - 20).
Pro gram CC in put with ex actly 5.00 V. Set
out put volt age to a low value, en sur ing the
power sup ply is in CC mode. Mea sure the
out put cur rent with an ac cu rate shunt. Cal i -
brate the cur rent with R686 ex actly on the
rated max. cur rent.
Warn ing! Wrong cal i bra tion can dam age
the unit.
• CAL I BRATING THE CC MON I TOR OFF -
SET.
With R652 on P384 the off set 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 volt -
age set on a low value. Mea sure the off set
volt age of the CC mon i tor on the prog. con -
nec tor. Cal i brate the off set on a neg a tive
value be tween –10 mV and zero mV.
Warn ing! wrong cal i bra tion can dam age the
unit.
4) SPARE PARTS
• When or der ing spare parts please state:
Model, Se rial num ber, Com po nent num ber
and Com po nent 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 i bra tion with 25-turn potmeters on P388
fig. 4 - 20 Cal i brating max. cur rent on P432
fig. 4 - 21 On P384, CC mon i tor can be cal i brated