SM6000 DELTA ELEKTRONIKA BV
July 2003, rev. May 2008 OPERATING MAINTENANCE TROUBLE SHOOTING CALIBRATING Page 4 - 6
TROUBLE SHOOTING
1) GEN ERAL
• In case you need as sistance for re pairing a unit, please con tact
our en gineers us ing the ad dress "Support@Delta-Elektronika.nl
".
• In case you want us to re pair the unit, please first fill out the
RMA-form be fore send ing the unit to us. Add ing a de tailed fault
description will help us to re pair the unit as soon as pos sible.
On our website www.DeltaPowerSupplies.com
the RMA-form
can be found un der 'Sup port'.
2)
NO OUTPUT (man ual con trol)
• Check the LED’s ‘Re mote CV’ and ‘Re mote CC’ on the front
panel, they should be off. Dis able Key lock and press the RE -
MOTE/LOCAL switch to turn both LED’s off.
• The LED ‘Output On’ should be on. If this LED is off, dis able Key -
lock and push the but ton ‘OUTPUT ON/OFF’.
• Check the connections on the SENSE BLOCK (at rear panel),
there should be a link be tween + and S+ and be tween – and S–
(see fig. 4 - 16).
• Check if there is a link in the Interlock con nector (if not, the RSD
LED will be on).
• Set both the CV- and CC-limit po tentiometer (at front panel) at
max i mum (fully clockwise).
• Turn both the CV and CC po tentiometers a few turns clockwise.
A volt age should be pres ent on the output (for units with Op tion
P220 first re move the Keylock function be fore the CV and CC
knobs can be turned, see par. 2) in pre vi ous chap ter "op er at ing
man ual").
• Turn both the CV and CC po tentiometers a few turns clockwise. A
voltage should be pres ent on the output.
3)
PROGRAMMING DOES NOT WORK OK
• Check the unit is in Re mote mode (Remote CV and/or Re mote CC
LED should be on).
• The unit works OK in manual con trol, but in pro gramming
mode the output voltage / cur rent has a large er ror.
Probably the fuse in se ries with Ø (pin 1) of pro gramming
connector trip ped, the fuse (F27_1 = 650 mA) is a self-resetting
type (see fig. 4 - 14).
• To check the fuse (F27_1) mea sure the voltage be tween Ø and
the mi nus out put, during the fault con dition. The volt age should
only be a few mV, a high voltage 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 flowing through pin 1, see also next
para graph 4) and fig. 4 - 15.
4)
PRO GRAMMING OFF SETS
• Unwanted off sets in the pro gramming can be caused by
earth loops.
Fig ure 4 - 15 shows a typical earthing prob lem. In case the load
has a con nection to earth and the programming source as well,
problems could occur. Improper choice of the earthing point of the
load can give a voltage drop of ΔV1. Con necting the mi nus or zero
to a sep arate earth con nection can give a volt age drop of ΔV2. Be -
cause the in ternal wires of the pro gramming in put are thin, the
voltage drops ΔV1 and ΔV2 will be across the in ternal wir ing as
well. Re sulting in an error voltage in se ries with the pro gramming
volt age.
• The best so lu tion for this is to use a floating pro gramming source,
a float ing load or the op tional in ternal ISO AMP CARD
(δ-prod uct).
5)
STATUS OUTPUTS FAIL
• Check fuse F27_2 in se ries with Ø (pin 8 of CON E), see fig. 4 - 14.
To check the fuse mea sure the voltage be tween Ø and the mi nus
output, a high voltage means too much cur rent flowing through the
fuse. F27_2 = 650 mA, self resetting.
fig. 4 - 14
Lo ca tion of pro gram ming fuses on P598
P598 is situated directly be hind the rear panel
fig. 4 - 15
Un wanted pro gram ming off sets
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