Delta Elektronika SM1500 Series User Manual

INSTALLATION SM1500
14 / 22 DELTA ELEKTRONIKA B.V. rev. Jan. 2021

By pressing the DISPLAY LIMITS button the voltmeter will
show the setting of the CV-limit and the CC-limit
potentiometer.

Check that the cooling of the unit is not obstructed.
4.5
KEYLOCK

If the function KEYLOCK is activated, it is no longer possible
to operate the REMOTE/LOCAL button and the OUTPUT
ON/OFF button. This function can be useful to protect the
output from accidental shutdown. The function KEYLOCK
does not influence the operating of the CV, CC, CV-limit and
CC-limit potentiometers.

Units with digital encoders:
For units with Option P220, also the digital encoders for CV
and CC are disabled with the Keylock function. This means
settings of the voltage and current do not change when the
encoders are operated. It is still possible to operate the
analog CV-limit and CC-limit potentiometers.

Activate Keylock:
Pressing the buttons DISPLAY SETTINGS and DISPLAY
LIMITS at the same time for more than 3 seconds, activates
the function KEYLOCK. The moment this function is
activated, the LED’s for REMOTE CV / CC and for OUTPUT
ON will blink a few times.

Disable Keylock:
Pressing the same buttons again for 3 seconds, disables the
Keylock function. The LED’s for REMOTE CV / CC and for
OUTPUT ON will blink again to indicate the new setting.
4.6
SELECT START-UP MODE

The below is only applicable for units with magnetic encoders
- option P220:
- Setting switch SW1-5 at the rear panel in position Right,
the unit will always start at 0V / 0A after mains switch on.
- Setting switch SW1-5 in position Left, the settings after
mains switch on will be the same as before switching the
mains voltage off.
4.7
ANALOG PROGRAMMING

Set DIP switch 1 of SW1 in position Left to select CON E for
programming.

Disable Keylock.

Set the unit in REMOTE CV for voltage programming and/or
in REMOTE CC for current programming.

Use the REMOTE/LOCAL button and push this button several
times until the right setting is activated.

Note that pushing the REMOTE/LOCAL button will shutdown
the output to avoid accidental damage to the load.

Connect the programming voltage source(s) (0 - 5 V) to the
analog programming connector CON E on the rear panel (see
fig. 4 - 2 and fig. 4 - 3). Always use a shielded cable (max.
30 meter) for programming.

Turn the output on again with the OUTPUT ON/OFF button.

If only the voltage is programmed, the maximum current can
still be set with the CC knob on the front panel and vice versa.
If this is not desirable the unit can be ordered with Option
P001 or Option P220 in order to have a fixed setting for the
CV and the CC knob on the front panel, see also paragraph
34) in previous chapter "General".

To avoid hum or noise, the programming cable may have to
be twisted in some cases.

To program the unit by current instead of voltage, simply use
a parallel resistor as a current to voltage converter.

Pressing the DISPLAY SETTINGS button will show the
programmed values for CV and CC.

Warning: The analog inputs are not isolated from the output.
The Ø of the prog. input (pin 1) is internally connected to the
S–, the S– is connected to the negative output. To protect the
internal wiring a 650 mA self-resetting fuse is connected in
series (F27_1 on P650). To avoid earth loops, use an isolated
programming source. If this is not possible, see next
paragraph for using the optional ISO AMP CARD.
fig 4 - 2
Programming by voltage:
left voltage -, right current programming.
fig 4 - 3
Programming by current:
left voltage -, right current programming.
fig 4 - 4
Remote control.
fig 4 - 5
Local sensing.

Delta Elektronika SM1500 Series Specifications

General

Brand	Delta Elektronika
Model	SM1500 Series
Category	Power Supply
Language	English