TROUBLE SHOOTING SM6000
Page 5 - 2 DELTA ELEKTRONIKA B.V. rev. June 2018
6 MAS TER / SLAVE PAR AL LEL PROB LEMS
• Check the volt age drop of the wir ing be tween the mas ter and the
slaves is < 10 mV.
• Check the wir ing has a low in duc tance.
7 OUT PUT VOLT AGE IS HIGHER THAN SET VALUE
• Check con nec tions on SENSE BLOCK (on rear panel), For nor -
mal op er a tion there should be a link be tween + and S+ and be -
tween – and S– (see also fig. 5 - 3). When re mote sens ing is used,
check the wires of the sens ing.
8 OT LED on
• The tem per a ture of the in ter nal heat sink is too high,
the out put has been shut down to avoid over heat ing.
• Check if the cool ing fans are run ning.
• Check if the air tem per a ture of the air in lets (left) is be low 50 °C
and the air flow is not ob structed.
9 OT LED blinks
• The tem per a ture of the in ter nal heat sink is get ting too high, a fur -
ther in crease will shut down the power sup ply.
• Check if the cool ing fans are run ning prop erly.
• Check if the air tem per a ture of the air in lets (left) is be low 50 °C
and the air flow is not ob structed.
10 ACF LED on
• Phase Loss, check in put.
• The in put volt age is too low or was in ter mit tent be cause of a bad
con nec tion. Dis con nect the mains, wait a few min utes and try
again.
As soon as the ACF LED Iights, the set tings for Re mote CV, Re -
mote CC and Keylock will be saved. If the unit turns back on, it will
have the same set tings. For the set ting of Out put On/Off af ter
turn ing the unit back on, the po si tion of DIP switch 2 on SW1 is de -
ter min ing.
If the ACF sit u a tion lasts a few sec onds, the out put will shut down.
The ACF prob lem has to be solved first, be fore the out put can be
turned on again.
• In ter nal er ror, send unit for re pair. See pre vi ous para graph 1), 1.
11 DCF LED on
• The out put volt age is be low the set volt age. This au to mat i cally
hap pens when the unit is in CC-mode (CC LED is on).
Also with an in ter rupted In ter lock con nec tor, the DCF LED will be
on.
• In ter nal er ror, send unit for re pair. See pre vi ous para graph 1), 1.
12 PSOL LED on
• The Power Sink is in over load or the tem per a ture of the Power
Sink is too high. See datasheet of the Power Sink op tion for fur -
ther de tails.
13 Blink ing LEDs RE MOTE CV, RE MOTE CC and
OUT PUT ON
• This in di cates the Keylock func tion is ac ti vated, see pre vi ous
para graph 5) in "op er at ing man ual".
14 NO LEDS on
• Check in put.
• Do not try to re pair, but send for re pair. See pre vi ous para graph
1), 1.
fig. 5 - 3
For nor mal op er a tion links should be con nected
be tween S+ and + and be tween S– and –
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