Troubleshooting - Delta Elektronika SM15-200D Product Manual

OPERATING - TROUBLE SHOOTING - CALIBRATING
TROUBLE SHOOTING
GEN ERAL
1)
In case you need as sis tance for re pair ing a unit, please con tact
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our en gi neers us ing the ad dress "Support@Delta-Elektronika.nl".
In case you want us to re pair the unit, please first fill out the
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RMA-form be fore send ing the unit to us. Add ing a de tailed fault
de scrip tion will help us to re pair the unit as soon as pos si ble.
On our website www.DeltaPowerSupplies.com
can be found un der 'Sup port'.
NO OUT PUT (nor mal op er a tion)
2)
Check in put fuses.
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Check po si tion of prog. switches at the rear panel, they should be
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on MAN UAL.
Check the con nec tions on the SENSE BLOCK (at rear panel),
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there should be a link be tween + and S+ and be tween – and S–.
Set OVP po ten ti om e ter (at front panel) at max i mum (fully clock
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wise).
Switch on unit.
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Turn both the CV and CC po ten ti om e ter a few turns clock-wise. A
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volt age should be pres ent on the out put.
PRO GRAMMING DOES NOT WORK OK
3)
Check po si tion of prog. switches at rear panel.
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The unit works OK in man ual con trol, but in pro gram ming
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mode the out put volt age / cur rent has a large er ror.
Prob a bly the fuse in se ries with Ø (pin 1) of prog. connector trip -
ped, the fuse (F600 = 650 mA) is a self-resetting type (see
fig. 4 - 16).
To check the fuse (F600) mea sure the volt age be tween Ø and the
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mi nus out put, dur ing the fault con di tion. The volt age should only
be a few mV, a high volt age means that an un wanted cur rent is
flow ing through pin 1 of the prog. con nec tor.
Please check why cur rent is flow ing through pin 1 (see also next
para graph 4) and fig. 4 - 17).
PRO GRAMMING OFF SETS
4)
Un wanted off sets in the pro gram ming can be caused by
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earth loops.
Fig ure 4 - 17 shows a typ i cal earthing prob lem. In case the load
has a con nec tion to earth and the pro gram ming source as well,
prob lems could oc cur. Im proper choice of the earthing point of the
load can give a volt age drop of ∆V1. Con necting the mi nus or zero
to a sep a rate earth con nec tion can give a volt age drop of ∆V2. Be -
cause the in ter nal wires of the pro gram ming in put are thin, the
volt age drops ∆V1 and ∆V2 will be across the in ter nal wir ing as
well. Re sulting in a er ror volt age in se ries with the pro gram ming
volt age.
The best so lu tion for this is us ing a float ing pro gram ming source
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with the help of the ISO AMP CARD
STATUS OUTPUTS FAIL
5)
Check fuse F601 in se ries with Ø (pin 8) (see fig. 4 - 16). To check
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the fuse (F601) mea sure the re sis tance be tween Ø and the mi nus
out put, an open cir cuit means a blown fuse. F601 = 650 mA.
MASTER / SLAVE PAR AL LEL PROB LEMS
6)
Ac ci den tal in ter rup tion of a mi nus lead of a unit dur ing op er a tion
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will cause fuse F600 to blow (see fig. 4 - 16). To check the fuse
(F600) mea sure the re sis tance be tween Ø (pin 1 of prog. conn.)
and the mi nus out put, the fuse is a self re set ting type.
F600 = 650 mA
Check link be tween pin 9 and 11 on the prog. con nec tor of the
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slaves
Cur rent shar ing is not ok. Prob a bly the links be tween S– and – of
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the slaves are not re moved.
Page 4 - 6
the RMA-form
or a float ing load.
(δ-prod uct)
DELTA ELEKTRONIKA B.V.
fig. 4 - 16
Lo ca tion of pro gram ming fuses on P432
P432 is sit u ated on the rear panel
fig. 4 - 17
Un wanted pro gram ming off sets
SM3000
rev. February 2018