Delta Elektronika ES 150 Series User manual

796+<*;
4(5<(3
+,3;(,3,2;96502(
+*76>,9:<7730,:
ES 150-series
ES 015-10
ES 030-5
ES 075-2
ES 0300-0.45

ES150 DELTA ELEKTRONIKA BV
rev. March 2017 SAFETY INSTRUCTIONS Page 2 - 1
Safety Instructions
Caution
The following safety precautions must be observed during all phases of operation, service and repair of this
equipment. Failure to comply with the safety precautions or warnings in this document violates safety standards
of design, manufacture and intended use of this equipment and may impair the built-in protections within. Delta
Elektronika shall not be liable for user’s failure to comply with these requirements.
Installation Category
The Delta Elektronika power supplies have been evaluated to installation category II (Over voltage category II).
Grounding of Mains Input
This product is a safety Class 1 instrument. To minimize shock hazard, the instrument chassis must be
connected to the AC Power Supply mains through a three or four conductor power cable for resp. a single or
three phase unit, with the ground wire firmly connected to an electrical ground (safety ground) at the power
outlet.
For instruments designed to be hard-wired to supply mains, the protective earth terminal must be connected to
the safety electrical ground before another connection is made. Any interruption of the protective ground
conductor, or disconnection of the protective earth terminal will cause a potential shock hazard that might cause
personal injury.
Grounding of Power Output
If the output of a unit is specified to deliver max 60Vdc, and either the negative or positive power output is
grounded, the voltage on the following connections can be considered safe:
- power outputs and sense connections
- programming/monitor/status-signals, Interlock, Master/Slave-connections, ACF/DCF-relay
- all Delta Elektronika interfaces.
Caution 1: If a low voltage unit has both power outputs floating, or if the output is in series with an external high
AC or DC voltage, the negative power output can exceed the safe value in respect to ground as specified in the
above warning!
Caution 2: Although a high voltage unit is set to a safe voltage below 60V, for safety it must always be
considered as high voltage unit! Wrong operation, a programming error or an external defect can result in an
unsafe high output voltage.
Caution 3: When programming a high voltage unit directly via a PC or via a network connection, either ground
the negative power output or use a safety isolated interface!
For more information and schematics regards Grounding and Safety, see the special application note "Safe
operation of a power supply" on the Delta Elektronika website.
Warning:
When the positive power output can exceed 60Vdc in respect to the negative output,
additional external measures must be taken to ensure safety isolation of the following:
- power outputs and sense connections.
Warning:
When the negative power output of the unit can exceed 60Vdc / 42.4Vpk in respect to ground,
additional external measures must be taken to ensure safety isolation of the following:
- power outputs and sense connections
- programming/monitor/status-signals, Interlock, Master/Slave-connections, ACF/DCF-relay
- interfaces with operational isolation
- non-isolated interfaces.

Fuses
Fuses must be changed by authorized Delta Elektronika service personnel only, for continued protection against
risk of fire.
Input Ratings
Do not use an AC Supply which exceeds the input voltage and frequency rating of this instrument. The input
voltage and frequency rating of the Delta Elektronika power supply series are stated in de accompanying
datasheet.
Live Circuits
Operating personnel must not remove the instrument cover. No internal adjustment or component replacement is
allowed by non Delta Elektronika qualified personnel. Never replace components with the power cable
connected. To avoid injuries, always disconnect power, discharge circuits and remove external voltage sources
before touching components.
Parts Substitutions & Modifications
Parts substitutions and modifications are allowed by authorized Delta Elektronika service personnel only. For
repairs or modifications the unit must be returned to a Delta Elektronika service facility.
Removal of (safety) covers
Safety cover(s) are used to cover potentially hazardous voltages.
Observe the following when removing safety cover(s):
- Switch off the unit.
- Disconnect the unit from the mains supply.
- Wait for 3 minutes to allow internal capacitors to discharge.
- Unscrew the screws and remove the cover(s).
- Always place the cover(s) back before connecting the unit to the mains supply again.
DELTA ELEKTRONIKA BV ES150
Page 2 - 2SAFETY INSTRUCTIONS rev. March 2017

ES150 DELTA ELEKTRONIKA BV
rev. March 2017 SAFETY INSTRUCTIONS Page 2 - 3
Environmental Conditions
The Delta Elektronika power supplies safety approval applies to the following operating conditions:
Indoor use
Ambient temperature : -20 to 50 °C
Maximum relative humidity : 95%, non condensing, up to 40 °C
: 75%, non condensing, up to 50 °C
Altitude: up to 2000m
Pollution degree 2
Caution risk of electrical Shock
!
Instruction manual symbol. The instrument will be marked with this symbol when it is
necessary for the user to refer to the instruction manual
Protective ground conductor terminal
oOff (supply)
IOn (Supply)
WEEE
(Waste Electrical & Electronic Equipment)
Correct Disposal of this Product
Applicable in the European Union.
This marking shown on the product, its packing or its literature indicates that
it should not be disposed with other wastes at the end of its working life, but
should be collected separately to recycle it responsibly to promote the
sustainable reuse of material resources.
Canada
This product has been tested to the requirements of CAN/CSA-C22.2 No. 61010-1, second edition, including
Amendment 1, or a later version of the same standard incorporating the same level of testing requirements

ES150 DELTA ELEKTRONIKA BV
rev. March 2017 DESCRIPTIONS Page 3 - 1
fig. 3- 1
The output ranges.
Every point in hatched area can be used
DESCRIPTIONS
1) OUTPUT
The ES015-10, ES030-5, ES075-2 and ES0300-0.45 can either be
used as a constant voltage source with current limiting or as a con-
stant current source with voltage limiting.
The change of mode occurs sharply at the crossing of the voltage
and current settings. Fig. 3- 1 shows the output ranges.
°OVERLOAD PROTECTION
The power supply is fully protected against all overload conditions,
including short circuit.
2) INPUT VOLTAGE
The power supplies have a wide input voltage range.
°The units can also be used as a DC/DC converter.
3) INPUT CURRENT
The units have active power factor correction (PFC). The input cur-
rent will therefore almost be a sine wave. This means that the
rms-valueandthe harmonicdistortion ofthe inputcurrent will berel-
atively low.
4) EFFICIENCY
The efficiency is very high and constant over a wide output current
range. High efficiency also means low power loss and low heat gen-
eration.
5) CV REGULATION
The CV-load regulation should be measured directly on the output
terminals(seefig.3-2).Afewcmofcablecanhaveavoltagedropof
several mV (at high current!).
6) CC REGULATION
For accurate CC-load regulation, the optionalexternal voltage sens-
ing is not recommended.
7) RIPPLE & NOISE
The output ripple is very low with almost no spikes. The ripple volt-
age has to be measured directly on the output terminals using a
probe with very short connections (to avoid pick up of magnetic
fields) (see fig. 3- 3).
Note: to get reliable results, the background noise level should be
lower than the output ripple.
8) PROGRAMMING INPUTS
The output voltage and current can be programmed by an external
analog voltage. This programming is very accurate and linear. The
levels are all standardised on 5V.
Theinputshaveaprotection circuitformedbyaseriesresistor and a
parallelzener (see fig. 3-4). Thecapacitorlimits thespeedtoa safe
value. Note that the analog inputs (and outputs) are not floating,
but the common is connected to the negative output terminal.
Wrong connection of Øcan cause earth loops which can trip the
fuse. After removing the fault, the fuse will reset (PTC-fuse). To pre-
vent earth loops, use isolated programming with the ISO AMP
MODULE (δ-product).
The programming mode (program and manual) can be selected at
the rear panel.
9) Ethernet / IEEE488 / RS232 PROGRAMMING
The Delta Elektronika PSC-ETH and PSC-232 controllers can be
built inside the unit. The programming connector on the power sup-
ply is compatible with the external interface PSC-488 module.
Voltage and current can easily be programmed and read back. Also
all the status outputs can be read by the computer.
ES0300-0.45
ES075-2
ES015-10 ES030-5
fig. 3- 2
Measuring CV-regulation
fig. 3- 3
Measuring ripple voltage
fig. 3- 4
Programming inputs
(internal circuit)

DELTA ELEKTRONIKA BV ES150
Page 3 - 2DESCRIPTIONS rev. March 2017
10) MONITORING OUTPUTS
The monitor outputs give a voltage 0 - 5 V proportional to the output
current or voltage. The output current can easily be measured
without an external shunt using the CC monitor (see fig. 3- 6).
The monitor outputs are buffered by op-amp’s and protected by
zeners in parallel (see fig. 3- 7). The table 3- 1 shows the
impedance of the monitoring outputs. The monitoring and the
referenceoutputsarestableforcapacitiveloadsupto2µF,for larger
values a 22 Ohm resistor should be put in series.
Note: in case of a pulsating load, the I monitor voltage will not
exactly match the output current. This is mainly caused by the
current through the output capacitors. Remote sensing will
worsen this effect.
11) +12V ON PROGRAMMING CONNECTOR
The +12V on the programming connector can be used for supplying
externalcircuitsliketheMASTER/ SLAVE ADAPTER.Theoutputis
current limited, but should not be overloaded.
12) CC STATUS OUTPUT
The CC status output has an open output voltage of 5 V and a short
circuit current of 10 mA. This makes it possible to drive directly: an
opto-coupler, a TTL gate or a CMOS gate.
13) REMOTE SHUTDOWN
A voltage of +5V on the Remote ShutDown input on the program-
ming connector willswitch off the power circuit of theunit. In standby
mode the power supply consumes very little power.
It is also possible to use a relay contact or a switch to shut down the
unit:connectaswitchbetweenVrefandRem.Shutd.(pin 9and5).
14) PROGRAMMING RESPONSE TIME
The response time is measured with a step wave form at the CV
prog. input. The load is resistive. Programming from a low to a high
output voltage is nearly load independent, but programming down to
a low voltage takes more time on lighter loads. This is caused by the
outputcapacitors,whichcanonlybedischargedbytheloadbecause
the power supply cannot sink current.
fig. 3- 5
External potmeters
V
A
Imon
0-5V
Vmon
0-5V
Return of
ref, prog, mon.
fig. 3- 6
External meters using monitor outputs
fig. 3- 7
Buffered monitor outputs (internal circuit)
Output pin Ro Io max
Vref 9 15 Ohm 10 mA
Vmon 10 20 Ohm 10 mA
Imon 220 Ohm 10 mA
+12V 7100 Ohm 25 mA
Ø11.2 Ohm
table 3- 1Outputs on programming connector
pin description pin description
1Ø, return of reference, prog.inputs
and monitor outputs 9Reference Voltage 5.1 V
2current monitor output (0 - 5 V) 10 Voltage monitor output (0 - 5 V)
3currentprogramminginput(0-5V) 11 Voltageprogramminginput(0-5V)
4CC status output, logic 1 = CC
mode (5 V / 10 mA) 12 NC
5Remote Shutdown (+5 V / 1 mA) 13 NC
6NC 14 NC
7+12 V output (Ri = 100 Ohm) 15 NC
8Ø, return of status outputs,
+12 V and Remote Shutdown
fig. 3- 8Connections analog programming connector

ES150 DELTA ELEKTRONIKA BV
rev. March 2017 DESCRIPTIONS Page 3 - 3
15) PULSATING LOAD
To avoid overheating the output capacitors, the AC component
of the load current should be limited (see fig. 3- 9).
OnemethodofdecreasingtheACcurrentthroughtheoutputca-
pacitor is by using alarge external electrolytic capacitor in paral-
lel with the load.
Care must betaken so that the capacitor incombination with the
lead inductance will not form a series resonant circuit!
16) INSULATION
For safety the insulation of the separating components (trans-
formers)betweeninputandoutputistested at 3750Vrmsduring
1 minute. This is tested before assembling.
Warning! The 3750 Vrms cannot be tested afterwards on the
assembledunitbecausetheinsulationbetweenthecomponents
on the inputside to thecase (like the bridge rectifier) is specified
at 2500 Vrms. Since the insulation output - case is low (only 600
VDC)theinsulationoftheprimarycomponentstocasewillbreak
down when 3750 Vrms is applied between input and output
(2500 Vrms + 600 VDC < 3750 Vrms) (see also fig. 3- 10).
Note: when testing the insulation, take care to charge and dis-
charge the capacitors between input - case and output - case
slowly (e.g. in one second). This to pevent high peak currents,
which could destroy the power supply. Make sure to have dis-
charged the capacitors completely before using it again.
17) RFI SUPPRESSION
Both the input and output have RFI filters, resulting in very low
conducted RFI to the line and load. Due to the output filter the
output voltage is very clean, having almost no spikes.
The combination of RFI filters and the closed metal case results
in a low radiated RFI.
18) OPERATING TEMP
At full power the operating temperature range is –20 to +50 °C.
From 50 to 60 °C the output current has to be derated linearly to
75 % at 60 °C (see fig. 3- 11). These temperatures hold for nor-
mal use.
19) THERMAL PROTECTION
A thermal switch shuts down the output in case of insufficient
cooling. After cooling down the unit will start working again.
20) HOLD - UP TIME
The hold - up time depends on the load, output voltage and line
input voltage. A lighter load or a lower output voltage results in a
longer hold - up time (see fig. 3-12).The influenceofthe linein-
put voltage is limited because of the active PFC.
21) TURN ON DELAY
The output voltage is available 0.25 sec after mains switch on.
22) INRUSH CURRENT
The inrush current is limited with a 30 Ohm NTC to about 10 A
when the NTC is cold.
23) COOLING
The cooling is by natural convection, no noisy blowers are pres-
ent. The unit should have sufficient free space to let the air flow
vertically through the unit. A distance of minimum 5 cm around
the unit is recommended.
For long life the temperature of the air entering the unit, should
be below 35 °C under normal conditions.
Under extreme conditions it should be below 50 °C.
fig. 3- 9
Pulsating load current
fig. 3- 10
Insulation test voltages
fig. 3- 11
Operating temperature ranges
fig. 3- 12
Hold-up time vs Vout with Iout as a parameter

DELTA ELEKTRONIKA BV ES150
Page 3 - 4DESCRIPTIONS rev. March 2017
24) SERIES OPERATION
Series operation is allowed up to 600V total voltage. The power
supplies can be connected in series without special precautions.
25) PARALLEL OPERATION
Parallelingof theunitshasnolimitations.The powersuppliescanbe
connected in parallel without special precautions.
26) MASTER / SLAVE OPERATION
For easier control, Master / Slave operation is recommended
(see fig. 3- 13 and fig. 3- 14). The resulting combination behaves
like one power supply and can be programmed on the master.
M/S series operation is allowed up to 600V total voltage.
The power supplies must be connected with the MASTER / SLAVE
SERIESADAPTER(δ-product).Themastercontrolsoneslave,which
in its turn controls the second slave and so on. The result is true
voltage sharing.
For M/S parallel operation connections can easily be made on the
analog programming connector. The master controls all slaves.
The result is true current sharing.
Mixed M/S parallel - series operation is also possible
(see fig. 3- 15).
Fig.3-16 showsacomputercontrolledM/Sparallelcombination.
Note: M/S parallel operation is not recommended for more than 4
units, consult factory for a solution.
27) POTENTIOMETERS
°Standard: -CV andCC potentiometers with knobsat front
panel.
°Option P001:-Screwdriver adjustment for CV and CC at the
front panel.
fig. 3- 13
Master / Slave series operation
fig. 3- 14
Master / Slave parallel operation
fig. 3- 15
Master / Slave mixed series-parallel
fig. 3- 16
The Master / Slave combination can also be
programmed with the interfaces PSC-ETH,
PSC-488 or the PSC-232

ES150 DELTA ELEKTRONIKA BV
rev. March 2017 OPERATING MAINTENANCE TROUBLE SHOOTING Page 4 - 1
OPERATING MANUAL
1) OPERATING THE UNIT FOR THE FIRST TIME
°Check that there is no condensation on the unit. If there is, allow
some time to dry.
°SettheprogramswitchesontherearpanelonMANUAL.Factory
default.
°Switch on unit.
°TurnboththeCVandCC potentiometerafewturnsclockwise. A
voltage should now be present on the output.
2) ANALOG PROGRAMMING
°Put the appropriate switch(es) in the position PROGRAM.
°Connecttheprogrammingvoltagesource(s)(0-5V)to theANA-
LOG PROG. CONNECTOR on the rear panel (see fig. 4- 1 and
fig. 4- 2). Always use a shielded cable for programming.
°If only the voltage is programmed, the maximum current can still
be set with the CC potentiometer and vice versa. If this is not de-
sirabletheCCorCVcanbesetwithanexternalpotentiometer, in
order to have a fixed setting.
°CAUTION: The analog inputs are not isolated from the output.
TheØofthe prog. input (pin 1) is internally connected to theneg-
ativeoutput.Toprotecttheinternalwiringa650mAself-resetting
fuse is connected in series (F7_1) (see fig. 4- 4).
For isolated analog programming the ISO AMP MODULE
(δ-product) is recommended to avoid earth loops.
°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.
3) Ethernet / IEEE488 / RS232 PROGRAMMING
°Theinternal Ethernet interfacePSC-ETH andtheinternalRS232
interface PSC-232 are factory built in.
°For the external interface PSC-488 module simply connect the
programming connector of the power supply with the mating
connector of the interface (pin compatible). Always use a
shielded cable.
°Connect the interface with the computer.
°On the power supply set both programming switches in the
position program.
°Both CV and CC can be programmed and read back.
The CC status can also be read by the computer.
4) MONITORING OUTPUTS
°The 5 V level is compatible with most interfaces.
°Themonitoringoutputscandriveameterdirectly(seefig.4-3).
5) STATUS OUTPUT
°The status output has a separate Øconnection (pin 8) to avoid
unwantedoffsetsintheprogramming.Thispinisprotectedwitha
650 mA self-resetting fuse (F7_2).
6) REMOTE SHUTDOWN
°The remote shutdown can be operated with +5V or a relay con-
tact (see fig. 4- 5).
fig. 4- 1
Programming by voltage
left voltage -, right current programming
fig. 4- 2
Programming by current
left voltage -, right current programming
fig. 4- 3
Remote control
fig. 4- 4
Internal circuit of programming inputs and outputs
fig. 4- 5
Remote ShutDown with switch

DELTA ELEKTRONIKA BV ES150
Page 4 - 2OPERATING MAINTENANCE TROUBLE SHOOTING rev. March 2017
7) MASTER / SLAVE SERIES OPERATION
°For series operation the MASTER / SLAVE SERIES
ADAPTER (δ-product) must be used. With this adapter
the master can be the upper or lower unit which, in
particular for high voltages is an advantage. Other
advantages are the fast and easy way of connecting.
°First, connect output terminals and test system in
normalseriesoperation. Ensurethatall(output)power
connections are reliable.
°Second, switch off all units. Connect units as shown in
fig. 4- 6. Use standard 15 pole (1:1) shielded cables.
Both prog. switches of the slave(s) should be in the
position PROGRAM.
°The max. number of slaves is only limited by the max.
total voltage of 600 V.
8) MASTER / SLAVE PARALLEL OPERATION
°Note: Master / Slave parallel is not recommended
formorethan4units,consultfactoryforusingmore
than 4 power supplies in parallel.
°First connect output terminals and test system in
normal parallel operation. Ensure that all power
connections are reliable. An interruption of one of the
(output)powerleadscancauseafusetoblowintheunit,
see paragraph “trouble shooting” on page 4-3.
°Second, switch off all units. Plug in prog. connectors
with the connections according to fig. 4- 7 (bus bar
topology). Always use a shielded cable. The shielding
must be connected to the case of the supply. Both prog.
switches of the slaves should be in the position
PROGRAM.
°Thepurposeofthelinkbetweenpin9and11istosetthe
voltage limit of the slaves at maximum.
°Keep the loadclose tothe master. Keep wiring between
master and slaves short. The voltage drop between a
unit and the buss bar should be kept < 10mV.
°Accidental interruption of a negative load lead of a unit
during operation will cause fuse F7_1 to blow, see
section ‘trouble shooting’.
fig. 4- 6
Master / Slave series connection with
two M/S SERIES ADAPTERS
fig. 4- 7
Master / Slave parallel connections

ES150 DELTA ELEKTRONIKA BV
rev. March 2017 OPERATING MAINTENANCE TROUBLE SHOOTING Page 4 - 3
OPERATING AND STORAGE
CONDITIONS
1) TEMPERATURE
°The operating temperature range at full load is -20 to
+50 °C.
°Please note: a lower temperature extends the life
of the power supply.
°The storage temperature range is -40 to +85 °C.
2) HUMIDITY
°During normal operation humidity will not harm the
power supply, provided the air is not aggressive.
The heat normally produced in the power supply will
keep it dry.
°Condensation. Avoid condensation inside the power
supply, break-down could be the result. Condensation
canoccurduringaperiodthepowersupplyisswitched
off (or operating at no load) and the ambient
temperature is increasing .
Always allow the power supply to dry before switching
it on again.
3) GALVANIC INDUSTRY
°For using the power supplies in the galvanic industry it
is strongly recommended to take precautions against
an aggressive environment.
°An aggressive environment with acid, salt, etc. can
harm the electronic components. Sometimes even the
copper traces of the pc-boards dissolve.
°To avoid problems the power supplies should be
mounted in a relative clean room, or mounted in a
cabinet receiving clean air with over pressure.
Or in a cabinet with a heat exchanger.
MAINTENANCE & TROUBLE
SHOOTING
1) GENERAL
°The ES-series power supplies normally need no
maintenance or calibration. Only care must be taken
that the cooling of the unit is not obstructed.
2) NO OUTPUT (normal operation)
°Remove load from output.
°Checkpositionof prog.switches attherearpanel,they
should be on MANUAL.
°Switch on unit.
°Turn both the CV and CC potentiometer a few turns
clock-wise.Avoltageshouldbepresentontheoutput.
3) PROGRAMMING DOES NOT WORK OK
°Check position of prog. switches at rear panel.
°The unit works OK in manual control, but in
programming mode the output voltage / current has a
large error.
Probably the fuse in series with Ø(pin 1) of prog.
connector tripped, the fuse (F7_1 = 650 mA) is a
self-resetting type.
°To check the fuse (F7_1) measure the voltage
between Øand the minus output, during the fault
condition. The voltage should onlybe a few mV, a high
voltage means that an unwanted current is flowing
through pin 1 of the prog. connector.
Please check why current is flowing through pin 1 (see
also next paragraph 4) and fig. 4- 8).
4) PROGRAMMING OFFSETS
°Unwanted offsets in the programming can be
caused by earth loops.
Fig.4-8 showsatypicalearthingproblem.Incasethe
load has a connection to earth and the programming
source as well, problems could occur. Improper
choice of the earthing point of the load can give a
voltage drop of ∆V1. Connecting the minus or zero to
aseparateearthconnectioncangiveavoltagedropof
∆V2. Because the internal wires of the programming
input are thin, the voltage drops ∆V1 and ∆V2 will be
accrosstheinternal wiringaswell.Resulting ina error
voltage in series with the programming voltage.
°The best solution for this is using a floating program-
ming source with the help of the ISO AMP MODULE
(δ-product) or a floating load.
5) STATUS OUTPUT FAILS
°Check fuse F7_2 in series with Ø(pin 8 of program-
ming connector). To check the fuse measure the
resistance between Øand the minus output, an open
circuit means a blown fuse. F7_2 = 650 mA.
6) MASTER / SLAVE PARALLEL PROBLEMS
°Accidental interruption of aminus lead ofa unit during
operation will cause fuse F7_1 to blow. To check the
fuse, measure the resistance between Ø(pin 1 of
prog. conn.) and the minus output, the fuse is a self
resetting type. F7_1 = 650 mA
°Check link between pin 9 and 11 on the programming
connector of the slaves.
7) NO LEDS on.
°Overheatingcanbethecause,cooling downwillreset
the thermal protection.
°Check input power.
°Check fuses inside unit.
fig. 4- 8
Unwanted programming offsets

DELTA ELEKTRONIKA BV ES150
Page 5 - 1OPERATING MAINTENANCE TROUBLE SHOOTING rev. March 2017
DESCRIPTIONS
1) REMOTE SENSING
The voltage at the load can be kept constant by remote sens-
ing. This feature is not recommended for normal use but only
when the load voltage is not allowed to vary more than a few
millivolts. Always use a shielded cable for sensing.
In order to compensate for the voltage drop across the load
leads, the unit will have to supply a higher voltage: Uout =
(voltage drop across each lead) + (voltage across the load)
(see fig. 5- 1).
The voltage display is connected to the sense leads and
therefore reads the voltage across the load and not the volt-
age on the output terminals.
The sense leads are protected for accidental interruption, in
which casethe output voltage willgo to a max. of115% of the
set value.
2) PULSATING LOAD
When using remote sensing on a pulsating load (for instance
aDC-motor), use acapacitor between S+ and+ andbetween
S– and – and a series resistor in the sense leads (see fig. 5-
2). Like this the AC-component caused by the voltage drop
across the load leads, is filtered.
OPERATING
1) REMOTE SENSING
Remove the links on the TERMINAL BLOCK (on rear panel)
and connect sense leads (thin shielded measuring wires) to
S+ and S– (see fig. 5- 4).
With remote sensing thevoltage onthe loadcan be kept con-
stant. The voltage drop across the loadleads will be compen-
sated. 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. 5- 1 it can be seen that on a 15 V power supply
only11Vwillbeavailableontheloadwhen2x2Vcompensa-
tion is used.
In order to prevent interference it is advisable to use shielded
cable for the sense leads. The inductance of the loads leads
couldgive a problemwith pulsating loads. In this case a large
electrolytic capacitor in parallel with the load will help. Check
that the capacitor in combination with the load leads does not
form a resonant circuit resulting in a large AC current flowing
in the leads.
Since the voltage display is internally connected to the sens-
ing terminals, it will automatically indicate the voltage on the
load.Notethatthevoltage measured ontheloadwillbelower
than on the output terminals.
2) MASTER / SLAVE PARALLEL OPERATION
WITH SENSE OPTIONS
Disconnect thelinks between theS– and – oftheslaves only.
If not removed the current sharing will not be proportional.
The S– and S+ could be connected to the load if desired, but
this is not recommended because of the complexity.
REMOTE SENSING for the ES150-series
ES015-10 OPTION P119
ES030-5 OPTION P120
ES075-2 OPTION P121
ES0300-0.45 OPTION P122
With the REMOTE SENSING options, the power
connectors are moved to the rear panel
fig. 5- 1
With remote sensing the voltage drop in the
load subtracts from the maximum output
fig. 5- 2
Remote sensing on a pulsating load
fig. 5- 3
On the terminal block, the +, S+, – and S– wires
must be connected. When using the power supply
without sensing, the links between + and S+ and –
and S– must be inserted.

ES150 DELTA ELEKTRONIKA BV
rev. March 2017 OPTIONS ES150 - SERIES Page 5 - 2
TROUBLE SHOOTING
1) NO OUTPUT (normal operation)
Check the connections on the TERMINAL BLOCK
(at rear panel), there should be a link between + and S+
and between – and S– (see fig. 5- 5).
2) MASTER / SLAVE PARALLEL PROBLEMS
Current sharing is not ok. Probably the links between
S– and – of the slaves are not removed.
3) OUTPUT VOLTAGE IS HIGHER THAN SET
VALUE
Check connections on TERMINAL BLOCK (on rear
panel), For normal operation there should be a link
between + and S+ and between – and S– (see also
fig. 5- 5). When remote sensing is used, check the wires
of the sensing.
fig. 5- 4
The shielding of the sense wires must be connected
to the case of the power supply
fig. 5- 5
When not using remote sensing , make sure the links
between + and S+ and – and S– are inserted
BUILT IN PSC-232 for the ES150-series
OPTION P148
For this option the RS232 Controller PSC-232 has been built inside the unit.
With the PSC-232 the voltage and current can easily be programmed and read back.
Also all the status outputs can be read by the computer.
See PSC-232 manual for further details.
BUILT IN PSC-ETH for the ES150-series
OPTION P150
For this option the Ethernet Controller PSC-ETH has been built inside the unit.
With the PSC-ETH the voltage and current can easily be programmed and read back.
Also all the status outputs can be read by the computer.
See PSC-ETH manual for further details.
LOW OVL SETTING for the ES75-2
OPTION P173
For this option the Over Voltage Limit (OVL) has been set below 60 V.

ES150 DELTA ELEKTRONIKA BV
rev. March 2017 EC DECLARATION Page 6 - 1
We
Delta Elektronika
Vissersdijk 4
4301 ND Zierikzee
The Netherlands
Declare under sole responsibility that the following Power Supply:
ES 015-10
ES 030-5
ES 075-2
ES 0300-0.45
Meets the intent of Directives 2014/30/EC for Electromagnetic Compatibility and
Directives 2014/35/EC regarding Electrical Safety. (Low Voltage Directive)
Compliance was demonstrated to the following specification as listed in the official Journal
of the European Communities:
EN 61000-6-3 Generic Emissions: (residential, light industrial)
EN 55022 Radiated and conducted, Class B
EN 61000-3-2 Power Harmonics
EN 61000-3-3 Voltage fluctuation and flicker
EN 61000-6-1 Generic Immunity: (residential, light industrial)
EN 61000-6-2 Generic Immunity: (industrial environment)
EN 61000-4-2 Electrostatic Discharge
EN 61000-4-3 Radiated electromagnetic fields
EN 61000-4-4 Electrical Fast Transients / Bursts
EN 61000-4-5 Surge immunity
EN 61000-4-6 RF common mode, conducted
EN 61000-4-11 Voltage variations and dips
EN 60950 Safety of IT equipment
EN 61010 Safety of electrical equipment for measurement, control and laboratory use
EC Declaration of Conformity
Managing director,
Zierikzee, March 2017
DELTA ELEKTRONIKA B.V.
Vissersdijk 4
4301 ND Zierikzee
The Netherlands
Tel. [phone]
Fax. [phone]
www.deltapowersupplies.com

+LS[H,SLR[YVUPRH)=
=PZZLYZKPQR
5+APLYPRaLL
;OL5L[OLYSHUKZ
;LS
-H_ 
^^^KLS[HWV^LYZ\WWSPLZJVT
+,3;(,3,2;96502()=
+*76>,9:<7730,: