Delta Elektronika SM15K Series, Product Manual

Page: 19 / 19

ISOLATED ANALOG SM15K INTERFACES
19 / 19 DELTA ELEKTRONIKA B.V. rev. Nov. 2019

The Limit Status or LIM-status is "1" in case the output
voltage or current reaches the limit setting. Which limit circuit
is active can be seen on the front panel indicators.

The Over Temperature Status or OT status is "1" in case of
an over temperature, the display will show the OT symbol and
the output shuts down.

The Current Control Status or CC-status output is "1" when
the unit is in CC-mode.

The Power Sink OverLoad Status or PSOL-status is not used
on the SM15K - it is only for SM3300.

The AC-Fail Status or ACF-status output is "1" in case the
input voltage is too low or too high.

The DC-Fail Status or DCF-status output is "1" when the
output voltage is either 5% below or above the set point.

The table in the interface datasheet shows the impedance
levels of the status outputs.

See figure 7 - 7 for a connection diagram.
7.9 REMOTE SHUTDOWN

A voltage of +4 V...+12 V on the Remote ShutDown input on
the programming connector will switch off the output of the
unit.

If the input is high, the RSD icon is shown in the display, see
fig 7 - 8.

It is also possible to use a relay contact or a switch to shut the
unit down (see fig. 7 - 9).

In standby mode the power supply consumes very little
power.

Note: also via Eth or other interfaces RSD can be activated.
7.10 REFERENCE VOLTAGE

A 5.114V reference voltage is available on the connector.
This reference can be used to control the unit with external
potentiometers.
7.11 AUX12V

The 12V on the programming connector can be used to
supply external circuits. The output current is fuse protected
at 0.2A and should not be overloaded.

Output impedance is 5 Ohms.
7.12 TROUBLE SHOOTING
7.12.1 PROGRAMMING DOES NOT WORK OK

Check the programming source is the correct slot.

Check that there is only 1 analog interface installed.

Check the output is switched ON, the Interlock is connected
and Remote ShutDown is low.
7.12.2 STATUS OUTPUT FAIL

Check the wiring of the analog programming connector for
short circuit or loose contacts.

If the front display shows a status icon, but the logic output on
the interface remains low, send the unit back for repair.
7.13 CALIBRATION

The isolated analog interface is factory calibrated.

If desired, both the 5 V and 10 V range can be custom
calibrated. See the ethernet programming manual for more
details.
fig 7 - 8
Position of the RSD icon in the unit display.
fig 7 - 9
Remote ShutDown using a relay contact.