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INSTALLATION

SM6000

15 / 21

DELTA ELEKTRONIKA B.V.

rev. Nov. 2020

series (F27_1 on P598). To avoid earth loops, use an isolated
programming source. If this is not possible, see next
paragraph for using the optional

ISO AMP CARD

4.8

ISOLATED ANALOG PROGRAMMING



For programming via the

ISO AMP CARD

, set DIP switch 1

on SW1 in the position DOWN.



When the ISO AMP CARD is built inside the unit, CON E has
been removed. Use CON H instead. The pinning of CON H is
equal to the pinning of CON E .



For further operating instructions, see previous paragraph.

4.9

IEEE488 / RS232 PROGRAMMING



Set DIP switch 1 on SW1 in position DOWN for programming
with the

PSC-488

using CON H or programming with the

PSC-232

using CON F and G. With DIP switch 1 in this

position, the signals V

prog

(pin 11) and I

prog

(pin 3) are disabled

on CON E. All the other signals can still be used.



Set the unit in REMOTE CV for voltage programming and/or
in REMOTE CC for current programming using the SCPI
commands (see manual PSC) or using the REMOTE/LOCAL
button on the unit. Push this button several times until the
right setting is activated. Setting the unit in REMOTE or
LOCAL will cause the output to shutdown to avoid accidental
damage to the load. Turn it on again using the SCPI
command or with the OUTPUT ON/OFF button.



Set DIP switch 1 on SW1 in position UP to enable CON E
again for analog programming.
In this position voltage and current programming on CON F
and H is disabled. The other functions and signals can still be
programmed and read back.

4.10

MONITORING OUTPUTS



The 5 V level is compatible with most interfaces.



The monitoring outputs can drive a meter directly (fig. 4 - 4).

4.11

STATUS OUTPUTS



The status outputs have a separate Ø connection (pin 8) to
avoid unwanted offsets in the programming. This pin is
protected with a 650 mA self resetting fuse (F27_2 on P598).

4.12

DC LOAD SENSING (REMOTE SENSING)



Remove the links on the SENSE BLOCK (on rear panel) and
connect sense leads (thin

shielded

measuring wires) to S+

and S

–. See fig. 4 - 5 and fig. 4 - 6.



With remote sensing the voltage on the load can be kept
constant. The voltage drop in the load leads will be
compensated. This feature is not recommended for normal
use, because it can easily give problems.



Max. 2 V per load lead can be compensated. Note that the
voltage drop in the leads decreases the max. output voltage
rating. In fig. 4 - 7 it can be seen that on a 15 V power supply
only 11 V will be available on the load when 2x 2 V
compensation is used.



In order to prevent interference it is advisable to twist the
sense leads. To minimize the inductance in the load leads
keep the leads close to each other. The inductance of the
loads leads could give a problem with pulsating loads. In this
case a large electrolytic capacitor (C

) in series with a

damping resistor (R

) both in parallel with the load will help

(see fig. 4 - 6). Check that the capacitor C

in combination

with the load leads and resistor R

forms a well damped

circuit.



Since the

voltmeter

is internally connected to the sensing

terminals, it will automatically indicate the

voltage on the

load

. Note that the voltage measured on the load will be

lower than on the output terminals.



The Over Voltage Limit measures the voltage on the output
terminals, so the OVL setting should be increased by the total
voltage drop in the load leads.

fig 4 - 6

Remote sensing with shielded wires.

fig 4 - 7

remote sensing, voltage drop on load leads subtracts

from the maximum output.

fig 4 - 8

Charging a battery with a circuit breaker in series.

Suggested circuit breakers for protection power supply

Model

Type nr.

Brand

Remarks