DP257
2 Outputs◆ DIN Rail Power Supply, 230 Watt◆◆
◆
◆◆
◆

◆

High efficiency: 85%
2 regulated, and galvanic isolated outputs
ACin 115/230V manual switch
WxHxD = 225x130x100mm
Isolated electronic short-circuit protection
for both outputs
Meets EMV standards
EN 50081-1 (EN 55022/B), EN 50082-2,
NAMUR, EN 61000-4 and VDE 0160/2
Design meets VDE 0551

See the web for current data sheet version:www.puls-power.dePower Supply DP257
Industrial systems very often require 5V and 24V
within one system. The dual-output DP257 can supply
controls, sensors, actuators and other electronicequipment simultaneously. Both outputs are stable
over the total load range, and have excellent ripple
and noise values of <40mVpp. Even when the 24V
output is short circuited the 5V output continues tooperate without interruption.
The most important economic benefits of this unit include: replacement of two separate conventional supplies; low weight; small size; quick single-handed installation on DIN rails (TS35).
Changes of line voltage and other disturbances (according to EN 61000-4, and VDE 0160 pulses - class 2 fortotal load range!) are filtered and regulated by the power supply. It is also protected against over-voltage
and short-circuits. Isolation is equivalent to safety
transformers according to VDE 0551, and meets VBG
4.

Schematic:

Vout

Iout

Vout1 5.1V
8A
Vout2 24V
9A
Max. total power:

PoutFeatures

Order-No.

41W
216W
230W

OVP, Vout1/2 adjustable

DP257.105

Warranty: 2 years from date of delivery.

OutputVoltage Vout1 adjustable min. ± 5%
Vout2 adjustable min. ± 4%
Accuracymax. ± 1%See page 2.
See page 2.
Includes: production-adjustment,line regulation,and load regulation.
Not available.
Not necessary.
Total power.
Flex. power rail sharing, see p. 3.
Flex. power rail sharing, see p. 3.
20Hz...200kHz.
20Hz...20MHz.
Threshold accuracy ± 4%.
By thyristor.
By independent second regulator.
+60° to +70°C Ta.
On the front (Vout1/2).
EN 60 950, VDE 0805.

Sense lines
None
Minimum load
None
Output power Poutmax. 230W
Pout1 at Vout1
max. 41W
Pout2 at Vout2max. 216W
Noise, Ripple Vout1/2
max. 40mVpp
incl. spikes
max. 50mVpp
Over-voltage protection
Vout1
typ. 6.25V
Vout2
typ. 30V
Derating
5W/K
Operating indicator
2 green LEDs
Isolation Vout to Vin
SELVIsolation Vout1 to Vout2
500V ACAll outputs are protected against open-circuit, short-circuit, and overload.

Input
Mechanical:

Al/Mg alloy housing, snap-on mounting for
DIN rail TS35/7.5 (EN 50 022),
WxHxD = 225 x 130 x 100mm,
the depth includes the DIN-rail mounting,see page 4.

Weight:App. 1340g

Screw terminals:

Input 1 terminal, max. 2.5/4mm2,output 2 terminals, each max. 2.5/4mm2,
see page 4.

PULS MunichTel.: +49 (0)89 / 92 78-2 44
Page 1 / DP257_10.Mar.99

Arabellastraße 15D- 81925 München
Fax: +49 (0)89 / 92 78-1 99

Line input AC 1
⋅ RangeLine input AC 2
⋅ RangeLine frequency
Input current rms.
Noise suppression

100...127V AC
88...132V AC
80...88V AC
132...150V AC
220...240V AC
187...264V AC
150...187V AC
264...300V AC
47...63Hz
max. 6.0Aeff. / 2.8Aeff.
EN 55 022/B

Switch position 115V.
Full spec.
Derated, see page 2.
Derated, see page 2.
Switch position 230V.
Full spec.
Derated, see page 2.
Derated, see page 2.
DC or 400Hz, see page 2.
@ 115 / 230V AC.

Specifications are valid at 230V AC, unless otherwise stated. They are subject to change without priornotice.

DP257 ◆ 2 Outputs ◆ DIN Rail Power Supply ◆ 230 Watt
Output(continued)

Voltage regulation:⋅ Line regulation⋅ Load regulation stat.
⋅ Load regulation dyn.

∆ Ustat∆ Udyn

max.
max.
max.

%
%%5.1V

24V

± 0.1
± 0.5
±8± 0.1± 0.25
±288...132V AC / 187...264V AC, Iout = 100%.
Iout = 50%

90%

D Iout2 = 10%...90%...10%,10%rise time dt = typ. 20µs.

Response timets⋅ Temperature coefficient
Ripple⋅ incl. spikes
Current limitation⋅ Threshold⋅ Characteristic⋅ Short-circuit
Start delay
Vout rise-up time
On and off characteristic
Power back immunity

tDelay
tRise

100Hz

ms%/KmVpp
mVpp

2± 0.014050

0.8± 0.01
4050

Till ∆Vout is within < 0.5% of final value.

min/max.

A8.5-129.5-11.5

max.

A—9.5-12.0Fixed.
See graph on page 3.
Periodic restart of Vout1 when exceeding the current
limit.

typ.
typ.

msms

330
5350
23max.
typ.
max.
max.

20Hz...200kHz, @AC nom., Iout = 100%.
20Hz...20MHz, @AC nom., Iout = 100%.

After switch on.

Vout

95%
t0

tDelaytRiseApproximately monotonic.

UBackmax.

V—

35

Unit off/on.

Input (continued)
AC input range 1 / 2
DC input range
Derated AC range 1 / 2
Derated DC range

V ACV DCV ACV DCV DC

88...132 / 187...264
250...300
80...88 / 150...187, 150 / 300 for 0.5s
176...250
300...370

Full spec.
Full spec.
Power derating typ. 20% (no start below 196V).
Full spec, but air- and leakage distances not longer
than stated in VDE 0805 .

Frequency range
Derated frequency range
In-rush current
Hold-up timeλPower factor
Internal fuse
Input range selection

max.
min.
min.
typ.

HzHzA
ms
ms

47...63
63...400
50
18250.63
5x20mm T8A/250V (IEC127/2-5)
Manual (230V AC set at factory)

Full spec.
Increased leakage currents.
Cold-start, NAMUR standard met (Ta = +25° C).
@ 88V AC, Iout = 100%, see figure on page 3.
@ 187V AC, Iout = 100%, see figure on page 3.
@ 88V AC, Iout = 100%.
To replace, see page 4.
115/230V switch, position see page 4.

Logic Functions
Vout adjustable

min.

%

± 5± 4
Position of trimmers see page 4.

If you adjust Vout1 downwards or Vout2 upwards you
have to adjust the other output in the same direction.

Electromagnetic Compatibility
Emissions according to EN 50081-1⋅ Radio interference, EN 55011, EN 55022
Immunity according to EN 50082-2⋅ Electrostatic discharge ESD
EN 61000-4-2⋅ Radiated fields, EN 61000-4-3⋅ Fast transients, EN 61000-4-4⋅ Surge transients, EN 61000-4-5⋅ Conducted disturb., ENV 50141 (draft of IEC 801-6)
Immunity according to further standards⋅ Transient voltage, IEC 255⋅ NAMUR-prescription⋅ Transient resistance, VDE 0160 §5.3.1.1.2⋅ Over-voltage resistance (PULS standard)

EN 50081-2 is also satisfied.

Class BNo degradation of performance
8kV direct discharge (level 4)
15kV air discharge (level 4)
10V/m (level 3)
4kV (level 4)
2kV (level 3)
2kV
4kV (isolation class 4)
2kV (isolation class 4)
500V
10V (level 3)
5kV
Satisfied
750V / 1.3ms (class 2)
150 / 300V AC / 0.5s

PULS MunichTel.: +49 (0)89 / 92 78-2 44
Page 2 / DP257_10.Mar.99

EN 50082-1 is also satisfied.

80MHz...1000MHz, ACin, Vout and signal lines: l = 1m.
Coupled to ACin line.
Coupled to DCout line.
Coupled to Vout lines.
Common mode, unit on.
Differential mode, unit on.
Differential respectively common mode.
150kHz...80MHz.

Common mode, unit off.
Valid for total load range.
Switch position 115 / 230V AC.

2 Outputs ◆ DIN Rail Power Supply ◆ 230 Watt ◆ DP257
Minimum Hold-Up Time

Protection
Unit protection⋅ Overload⋅ Short-circuit proof⋅ Open-circuit proof⋅ Over-temperature (OTP)⋅ Reverse battery prot.
⋅ ACin range selection

260
240
220

40%

Hold-Up Time [ms]20060%

180
80%

160
140

100%

120Load protection⋅ Over-voltage (OVP)
Threshold Vout1
Vout2
Accuracy Vout1
Vout2

100
80
60
40
200
180

190

200

210

220

230

240

250

Yes
Yes
Yes
Yes
Yes
ManualSee current limit.
Automatic voltage recovery.

Switch for 115/230V AC.

Yes
6.25V30V± 4%± 4%By thyristor.
Independent second regulator.

⋅ Isolation resistance⋅ Protection class⋅ PE resistance⋅ Protection system⋅ Leakage current⋅ Safe low voltage⋅ Over-voltage class

3kV AC
2.5kV AC
500V AC8mm4mmmin. 5MΩ
Ι< 0.1Ω
IP20max. 0.75mASELV
ΙΙPrimary / secondary.
Primary / PE.
Secondary / PE.
Primary / secondary.
Primary / PE.
VDE 0551.
VDE 0106 part 1, IEC 536.
VDE 0805.
DIN 40050, IEC 529.
EN 60 950 (47...63Hz line).
EN 60 950, VDE 0805, VDE 0160.
VDE 0110 part 1, IEC 664.

Touch safetyPenetration protection

Finger test> ∅ 3mm

VDE 0100 §6, EN 60 950, VBG4.
e.g. screws, small parts etc.

typ.
typ.
max.
max.

260

Output Voltage Range 2 [Vac]SafetyTyp. Output Characteristic

Electrical safety⋅ Test voltage (each unit)
according to EN 60 950
for t = 2sec
⋅ Air- and leakage distance262422

Vout 2

Output Voltage Vout [V]2018161412108
Vout 1642

Periodic restart

0024681012Output Current Iout [A]Typ. Derating over Temperature
250
230

Operation and Ambient Area

Output Power Pout [W]210190170
1501301109070230 Watt50305560657075

Temperature [+ °C]

Application classOperation temperature⋅ Derated range
Storage temperature
Humidity
Mechanical usage⋅ Lateral spacing
Cooling
Dirt protection level
Vibration
Shock
Operation heightKSF
max. 0° ... +70°C+60° ... +70°C
typ. –20° ... +100°C
max. 95%
Vertical8mm
Normal convection
max. 20.075mm
11ms / 15g
max. 2,000m

DIN 40040.
Ta (measured at 1cm distance).
Derating, see diagram.
Ta.
Non-condensing.
See page 4.
To neighbouring units.
Don’t obstruct air flow.
VDE 0110 part 1.
IEC 68-2-6 (10...60Hz).
IEC 68-2-27 (3 shocks).
Above sea level.

Typ. Efficiency

Efficiency and Power Loss

86

DP257.105

typ.

85% / 40.5W@ 230V ACin, Iout = 100%.

Efficiency [%]84

Reliability and Lifetime
230Vac82

187Vac8020406080

100

MTBF according to Siemens
standard SN29500
typ. To be discovered
230VAC, Iout = 100%, +40°C Ta.
Only long life (> 2,000h @105° C) electrolytic capacitors are used.
Function test
100%
Test certificate enclosed.
In-circuit test
Yes
Run-in (burn-in)
24hFull load, Ta = +60° C, on/off cycle.

Output Power Pout [%]PULS MunichTel.: +49 (0)89 / 92 78-2 44
Page 3 / DP257_10.Mar.99

This technical information is valid for +25° C ambient
temperature and 5 min. run in time, unless otherwise stated.

DP257 ◆ 2 Outputs ◆ DIN Rail Power Supply ◆ 230 Watt

Fuse

SchematicRegulator

OVPFILTER

Installation for Operating
Install DIN rail TS35/7.5 horizontally, ensuring correctorientation.
For other installation considerations consult yourrepresentative. Ensure free air flow.

Flybackconverter
typ.
65kHz

Choke
converter
typ.
65kHz

OVP

Dimensions and Connections
Fully enclosed Al/Mg alloy housing. All mechanicaldimensions are in mm.
1) The height of the plastic studs is 3.5mm total for
top and bottom.
2) Do not remove PE screw.
3) The height of this srew head is max. 2.5mm.

Screw terminals:
On the front side. These accept wire of up to 4mm2cross section (single-core cable) or 2.5mm2 crosssection (multi-core flex). Remove 9 to 15mm ofinsulation from wire.
Take care of standards which must be satisfied, e.g.
VDE 0100 or EN 60950.

NLPE

GND1
Vout1

primarysideVout2

Trimmer 1

115/230Vswitch2)

GND2

LED green(Vout1)

LED green(Vout2)

secondaryside1)

Trimmer 2

Do not obstruct air flow!
3)

Mountingfor DIN rail
TS35/7.5

1)

Caution:
Do not remove any screws on box, as internal safety
connections could be disconnected!

220.0

Modifications (contact supplier)
Other DC input ranges.
Other output voltages.
Lower cost versions.
PULS MunichTel.: +49 (0)89 / 92 78-2 44
Page 4 / DP257_10.Mar.99

Arabellastraße 15D- 81925 München
Fax: +49 (0)89 / 92 78-1 99