Delta Elektronika SM15K Series User Manual

TROUBLE SHOOTING SM15K
28 / 32 DELTA ELEKTRONIKA B.V. rev. January 2021
8
TROUBLE SHOOTING
8.1
GENERAL

If you have a question about the unit, please contact our
engineers using the address Support@Delta-Elektronika.nl.

In case the unit is defect, please first fill out the RMA-form
before sending the unit to us. Adding a detailed fault
description will help us to repair the unit as soon as
possible. Do not try to repair the unit yourself.

On our website the RMA-form can be found under
'Support'.
8.2
NO DC OUTPUT

If ‘OL’ or ‘PROT’ is displayed, see paragraph 8.9 in this
chapter. Warning! Risk of damage by over voltage.

Check the output is switched ON: the text 'ON/off' must be
visible on the right side of the display.

If the text is 'on/OFF', press the button next to this text to
switch it ON if needed.

Check the unit is not in LOCK mode: the text 'Lock' must be
visible on the right side of the display.

If the text is 'Unlock', press the button next to this text for a
few seconds to unlock the unit, see fig. 8 - 1.

First set the unit in local operation (or so-called manual
operation): press and hold the ON/off button for 4 seconds.

On the second line of the display, before both the set
values the text 'front' will be seen, now press the button
next to the text on/OFF to switch on the output.

Check connections on the SENSE BLOCK (at rear panel).

For local sensing, there should be a link between + and S+
and between – and S– (see fig. 8 - 2).

For remote sensing, the wires from S+ and S- should be
connected to respectively the + and - terminals on the load.

Check there is a link between pin 1 and pin 3 of the
Interlock connector.

Check the settings for CV- CC- and CP-limit are set to a
value greater than 0.

Go to Menu -> Protection -> Limits.

Here set Voltage, Current and Power limits.

Turn both the CV and CC encoders a few turns clockwise,
and via Menu > Configuration > Prg Setting > P-Settings
set a value suitable to the required power.

Now a voltage should be present on the output.
8.3
PROGRAMMING DOES NOT WORK OK

First make sure the unit works okay in local mode, see
previous paragraph.

If this is okay, check the unit is in Remote mode.

Go to Menu -> Configuration -> PrgSource.

Here set the Vsettings, Isettings and Psettings to the
required programming source, either 'eth', 'web', 'slot1',
'slot2', 'slot3' or 'slot4'.

For example, when programming via Ethernet, on the
second line of the display, before both the set values the
text 'eth' must be seen (see fig. 8 - 3).

It is also possible to only have one of the settings in remote
mode, and have the other setting in local mode.

Enter a command to program the Vsettings, Isettings and
Psettings to a value greater than 0.

Now a voltage should be present on the DC output.

Note: when changing programming source, the output
switches to OFF (to avoid accidental damage to a load).

If the text is 'on/OFF', press the button next to this text to
switch it ON if needed.
8.4
PARALLEL PROBLEMS

Check the voltage drop of the DC wiring between the
master and the slaves is < 10 mV.

Check the wiring has a low inductance.

Without a M/S-interface, check that one of the units
operates in Bi-Directional mode. And check the CV setting
of this unit is always 0.5% higher than on the slaves.
fig 8 - 2
For normal operation links should be connected
between S+ and +, and between S– and –.
Note that there is room for two links in each sense
block but it is sufficient if one is connected.
fig 8 - 1
At the right side, the texts must be 'Lock'
and 'ON/off'.
fig 8 - 3
For Ethernet programming, the text 'eth' must be seen
before the setting(s) that is/are in 'remote mode'.

Delta Elektronika SM15K Series Specifications

General

Brand	Delta Elektronika
Model	SM15K Series
Category	Power Supply
Language	English