Allen-Bradley Bulletin 1606 User manual

Reference Manual
Bulletin 1606 Switched Mode Power Supplies
Catalog Number: 1606-XLP50E
Index
1. Description ........................................................1
2. Specication Quick Reference ............................1
3. CatalogNumbers ................................................1
4. Certication Marks ..............................................1
5. AC-Input...............................................................4
6.Input Inrush Current Surge .................................5
7. DC-Input...............................................................5
8. Hold-up Time.......................................................6
9. DC-OK Output .....................................................6
10. Output .................................................................7
11. Efciency and Power Losses................................8
12. Functional Diagram.............................................9
13. Reliability.............................................................9
14. Front Side and User Elements...........................10
15. Terminals and Wiring........................................10
16.EMC....................................................................11
17. Environment......................................................12
18. Protection Features ...........................................12
19. Safety .................................................................13
20. Dielectric Strength ............................................13
21. Certications .................................................... 14
22. Environmental Compliance ............................. 14
23. Physical Dimensions and Weight..................... 15
24. Installation and Operation Instructions .......... 15
25. Accessory........................................................... 16
26.Application Notes............................................. 17
26.1. Peak Current Capability ......................... 17
26.2. Back-feedingLoads ................................ 17
26.3. Series Operation..................................... 18
26.4. Parallel Use to Increase Output Power . 18
26.5. Parallel Use for Redundancy.................. 18
26.6.Daisy Chainingof Outputs..................... 19
26.7. ChargingBatteries ............................. 19
26.8. External Input Protection....................... 20
26.9. Inductive and Capacitive Loads ............. 20
26.10.Operation on Two Phases...................... 20
26.11.Use in a Tightly Sealed Enclosure .......... 20
26.12.MountingOrientations.......................... 21
•PEand symbol—PE is the abbreviation for Protective Earth and has the same meaning as the symbol .
•Earth,Ground—This document uses the term “earth” which is the same as the U.S. term “ground”.
• T.b.d.—To be defined, value or description will follow later.
• AC 230V—A figure displayed with the AC or DC before the value represents a nominal voltage with standard tolerances (usually ±15%)
included. E.g.: DC 12V describes a 12V battery disregarding whether it is full (13.7V) or flat (10V)
• 230Vac—A figure with the unit (Vac) at the end is a momentary figure without any additional tolerances included.
• 50Hz vs. 60Hz—As long as not otherwise stated, AC100V and AC230V parameters are valid at 50Hz and AC120V parameters are valid at 60Hz
mains frequency.
•may—A key word indicating flexibility of choice with no implied preference.
•shall—A key word indicating a mandatory requirement.
•should—A key word indicating flexibility of choice
Terminology and Abbreviations

All parameters are specified at 24V, 2.1A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
2Rockwell Automation Publication 1606-RM034A-EN-P — March 2014
Bulletin 1606 Switched Mode Power Supplies
Power Supply
AC 100-240V Wide Range Input
NEC Class 2 Compliant
Adjustable Output Voltage
Eciency up to 89%
Compact Design, Width only 45mm
Full Output Power Between -10°C and +60°C
DC-OK Signal Included
Large International Approval Package
DIN Rail Bracket for Wall or Panel Mount Included
3 Year Warranty
1. Description 2. Specication Quick Reference
Output voltage DC 24V
Adjustment range 24-28V
Output current 2.1–1.8A 24-28V
Output power 50W
Output ripple < 50mVpp 20Hz to 20MHz
Input voltage AC 100-240V Wide Range Input
Mains frequency 50-60Hz ±6%
AC Input current typ. 0.77 / 0.44A at 120 / 230Vac
Power factor typ. 0.56 / 0.52 at 120 / 230Vac
AC Inrush current 17 / 35A typ. peak value
at 120 / 230Vac
40°C and cold start
DC Input 85-375Vdc
Eciency typ. 88.4 / 89.0% at 120 / 230Vac
Losses typ. 6.6 / 6.2W at 120 / 230Vac
Temperature range -10°C to +70°C operational
Derating 1.3W/°C +60 to +70°C
Hold-up time typ. 35 / 190ms at 120 / 230Vac
Dimensions 45x75x91mm WxHxD
A compact size, light weight, simple mounting on
the DIN rail and the quick connect spring-clamp
terminals are what makes the 1606-XLP power
supplies so easy to use and install in seconds.
A rugged electrical and mechanical design as well as
a high immunity against electrical disturbances on
the mains provides reliable output power. This oers
superior protection for equipment connected
to the public mains network or exposed to a critical
industrial environment.
The 1606-XLP series oers output voltages from 5 to
56Vdc and a power rating of up to 100W. A DC-OK
signal allows remote diagnostics.
The supplementary decoupling diode
module 1606-XLPRED helps you build redundant
systems or protect against back-feed voltages.
3. Catalog Numbers 4. Certication Marks
Power Supply 1606-XLP50E Standard unit
IND. CONT. E
Q
.
UL 508
UL 60950-1
Class I Div 2
Accessory 1606-XLPRED Decoupling /
Redundancy module
GL
Marine
EMC, LVD
Marine RINA
GOST R
C-Tick
•
•
•
•
•
•
•
•
•
•

All parameters are specified at 24V, 2.1A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM034A-EN-P — March 2014 3
Bulletin 1606 Switched Mode Power Supplies
Intended Use
•This device is designed for installation in an enclosure and is intended for the general professional use such as in industrial control, office,
communication, and instrumentation equipment.
•Do not use this power supply in aircraft, trains, nuclear equipment or similar systems where malfunction may cause severe personal injury or
threaten human life.
Installation Requirements
•This device may only be installed and put into operation by qualified personnel.
•This device does not contain serviceable parts. The tripping of an internal fuse is caused by an internal defect.
•If damage or malfunction should occur during installation or operation, immediately turn power off and send unit to the factory for inspection.
•Mount the unit on a DIN rail so that the terminals are located on the bottom of the unit. For other mounting orientations, refer to derating
requirements in this document.
•This device is designed for convection cooling and does not require an external fan. Do not obstruct airflow and do not cover ventilation grid
(e.g. cable conduits) by more than 15%!
•Keep the following installation clearances: 40mm on top, 20mm on the bottom, 5mm on the left and right sides are recommended when the
device is loaded permanently with more than 50% of the rated power. Increase this clearance to 15mm in case the adjacent device is a heat
source (e.g. another power supply).
SHOCK HAZARD: Do not use the power supply without proper grounding (Protective Earth). Use the terminal on the input
block for earth connection and not one of the screws on the housing.
- Turn power off before working on the device. Protect against inadvertent re-powering
- Make sure that the wiring is correct by following all local and national codes
- Do not modify or repair the unit
- Do not open the unit as high voltages are present inside
- Use caution to prevent any foreign objects from entering the housing
- Do not use in wet locations or in areas where moisture or condensation can be expected
- Do not touch during power-on, and immediately after power-off. Hot surfaces may cause burns.
WARNING: EXPLOSION HAZARDS!
Substitution of components may impair suitability for this environment. Do not disconnect the unit or operate the voltage adjustment or S/P jumper unless
power has been switched off or the area is known to be non-hazardous.

All parameters are specified at 24V, 2.1A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
4Rockwell Automation Publication 1606-RM034A-EN-P — March 2014
Bulletin 1606 Switched Mode Power Supplies
5. AC-Input
AC input nom. AC 100-240V Wide-range input, TN-, TT-, IT-Mains, see Fig. 5-1
AC input range 85-264Vac Continuous operation
60-85Vac Full power for 200ms, no damage between 0 and 85Vac
264-300Vac < 0.5s
Input frequency nom. 50 – 60Hz ±6%
Turn-on voltage typ. 65Vac Steady-state value, see Fig. 5-1
Shut-down voltage typ. 55Vac Steady-state value, see Fig. 5-1
AC 100V AC 120V AC 230V
Input current typ. 0.91A 0.77A 0.47A at 24V, 2.1A see Fig. 5-3.
Power factor *) typ. 0.58 0.56 0.52 at 24V, 2.1A see Fig. 5-1.
Crest factor **) typ. 3.05 3.26 3.91 at 24V, 2.1A
Start-up delay typ. 32ms 32ms 32ms See Fig. 5-2.
Rise time typ. 33ms 33ms 48ms 0mF, 24V, 2.1A, see Fig. 5-2.
typ. 45ms 45ms 60ms 2mF, 24V, 2.1A, see Fig. 5-2.
Turn-on overshoot max. 400mV 400mV 400mV See Fig. 5-2.
*) The power factor is the ratio of the true (or real) power to the apparent power in an AC circuit.
**) The crest factor is the mathematical ratio of the peak value to RMS value of the input current waveform
Fig. 5-1
Input voltage range Fig. 5-2 Turn-on behavior, denitions
Turn-on
85V
Rated
input range max.
500ms
V
IN
P
OUT
caV003V06
full
power
for
200ms
264V
Shut-down
Start-up
delay Rise Time
Overshoot
- 5%
Output
Voltage
Intput
Voltage
Fig. 5-3 Input current vs. output load Fig. 5-4 Power Factor vs. output load
2.1A
0.1 0.5 0.9 1.3
0
0.2
0.4
1.0A
Input Current, typ.
1.7
Output Current
0.6
0.8
a) 100Vac
b) 120Vac
c) 230Vac b
c
a
2.1A
0.1 0.5 0.9 1.3
0.4
0.45
1.7
Output Current
0.5
0.55
0.6
0.65
Power Factor, typ.
a) 100Vac
b) 120Vac
c) 230Vac b
c
a

All parameters are specified at 24V, 2.1A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM034A-EN-P — March 2014 5
Bulletin 1606 Switched Mode Power Supplies
6. Input Inrush Current Surge
A NTC limits the input inrush current after turn-on of the input voltage. The inrush current is input voltage- and
ambient temperature-dependent.
AC 100V AC 120V AC 230V
Inrush current max. 18A
peak
23A
peak
48A
peak
40°C ambient, cold start
typ. 14A
peak
17A
peak
35A
peak
40°C ambient, cold start
Inrush energy typ. 0.3A
2
s 0.4A
2
s 1.5A
2
s 40°C ambient, cold start
Fig. 6-1 Input inrush current, typical behavior Fig. 6-2 Input inrush current, zoominto the rst peak
Input: 230Vac
Output: 24V, 2.1A
Ambient: 40°C
Upper curve: Input current 20A / DIV
Middle curve: Input voltage 1000V / DIV
Lower curve: Output voltage 20V / DIV
Time scale: 20ms / DIV
Input: 30Vac
Output: 24V, 2.1A
Ambient: 40°C
Input current curve: 10A / DIV, 1ms / DIV
Ipeak 32.4A
The charging current into EMI suppression capacitors is
disregarded in the rst microseconds after switch-on.
7. DC-Input
%03+/%52-V092-011CD.montupniCD
noitareposuounitnoCcdV573-58.nimegnartupniCD
A1.2dnaV42tacdV003/cdV011A91.0/A05.0.pyttnerructupniCD
eulavetatsydaetScdV18.pytegatlovno-nruT
Shut-down voltage typ. 58Vdc Steady state value
Fig. 7-1 Wiring for DC Input
Fuse
+
-
Load
L
N
PE
+
-
Power Supply
AC
DC
Battery
internal
fused
Instructions for DC use:
a) Use a battery or similar DC source.
b) Connect +pole to L and – pole to N.
c) Connect the PE terminal to a earth wire or
to the machine ground.
d) In case the – pole of the battery is not
connected to earth, use an appropriate fuse
to protect the N terminal.

All parameters are specified at 24V, 2.1A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
6Rockwell Automation Publication 1606-RM034A-EN-P — March 2014
Bulletin 1606 Switched Mode Power Supplies
8. Hold-up Time
AC 100V AC 120V AC 230V
Hold-up Time typ. 54ms 82ms 360ms 1.05A, 24V, see Fig. 8-1
typ. 26ms 40ms 180ms 2.1A, 24V, see Fig. 8-1
Fig. 8-1 Hold-up time vs. input voltage Fig. 8-2 Shut-down behavior, denitions
0
20
40
100
120ms
85 120 155 190 230Vac
Input Voltage
Hold-up Time
60
80
a) 24V 1.05A typ.
b) 24V 1.05Amin.
c) 24V 2.1A typ.
d) 24V 2.1A min.
a b c d
- 5%
Hold-up Time
Zero Transition
Output
Voltage
Intput
Voltage
Note: At no load, the hold-up time can be up to several seconds. The green DC-ok lamp is also on at this time.
9. DC-OK Output
This feature monitors the output voltage, which is present on the output terminals.
The signal is a source output which can feed loads up to 30mA. Loads can be a 24V relay (Rcoil < 700Ohm), a LED or
the input of a PLC system. The relays operates or the LED is on if output voltage exceeds the threshold level.
A wheeling diode (necessary when the load is a relay) is already included in the power supply.
Threshold value 20V +/-4%
Output current min. 30mA For typical values see Fig. 9-2
Output voltage min Vout – 1V
at 30mA
The open collector is internally linked to the positive output pole. The
DC-OK voltage is approximately the output voltage if the output voltage
is higher than the threshold level.
Fig. 9-1 DC-ok wiring diagramFig. 9-2 Output characteristic DC-OK signal
+ +
DC
ok
- -
24-28V
NL
DC-ok
Relay
LED
DC-OK Voltage
0
01020
4
8
12
28V
16
20
24
40m
A
2515530 35
DC-OK Current
-
DC
OK
-
+
+
ML50
V
A
Load
Test Setup

All parameters are specified at 24V, 2.1A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM034A-EN-P — March 2014 7
Bulletin 1606 Switched Mode Power Supplies
10. Output
Output voltage nom. 24V
Adjustment range min. 24-28V Guaranteed
max. 30V At clockwise end position of potentiometer
Factory setting 24.5V
±0.2%, at full load, cold unit
Line regulation max. 10mV 85 to 264Vac
Load regulation max. 100mV Static value, 0A 2.1A 0A
Ripple and noise voltage max. 50mVpp 20Hz to 20MHz, 50Ohm
Output capacitance typ. 1600μF
Output current nom. 2.1A At 24V, see Fig. 10-1
nom. 1.8A At 28V, see Fig. 10-1
Output power nom. 50W
Short-circuit current min. 3.1A Load impedance 400mOhm, see Fig. 10-1
max. 5A Load impedance 400mOhm, see Fig. 10-1
Fig. 10-1 Output voltage vs. output current,
230Vac, typ.
Output Voltage
0
012
4
8
12
28V
16
20
24
4
A
2.51.50.5 33.5
Adjustment
Range
Output Current
Peak current capability (up to several ms)
The power supply can deliver a peak current which is higher than the specied short term current. This helps to start
current demanding loads or to safely operate subsequent circuit breakers.
The extra current is supplied by the output capacitors inside the power supply. During this event, the capacitors will
be discharged and cause a voltage dip on the output. Detailed curves can be found in section 27.1.
Peak current voltage dips typ. from 24V to 16V at 4.2A for 50ms, resistive load
typ. from 24V to 15V at 10.5A for 2ms, resistive load
typ. from 24V to 10.5V at 10.5A for 5ms, resistive load

All parameters are specified at 24V, 2.1A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
8Rockwell Automation Publication 1606-RM034A-EN-P — March 2014
Bulletin 1606 Switched Mode Power Supplies
11. Eciency and Power Losses
AC 100V AC 120V AC 230V
%5.78.pytycneiciffE 88.4% 89.0% 2.1A, 24V
W 0A3.1W7.0W6.0.pytPower losses
W 1.05A, 24V4.4W1.4W0.4.pyt
W 2.1A, 24V2.6W6.6W2.7.pyt
Fig. 11-1 Eciency vs. output current at 24V Fig. 11-2 Losses vs. output current at 24V
Eciency
0.3
76
78
80
82
84
86
88
74
90%
2.1
A
0.9 1.2 1.8
Output Current
0.6 1.5
a) 100Vac
b) 120Vac
c) 230Vac
b
c
a
Power Losses
1.23.00
A
0
1
3
4
5
6
8W
2
7
0.6 0.9 1.2
Output Current
1.5 1.8
a) 100Vac
b) 120Vac
c) 230Vac
a
b
c
a
b
c
Fig. 11-3 Eciency vs. input voltage, 24V, 2.1A Fig. 11-4 Losses vs. input voltage, 24V, 2.1A
Eciency
85 120 155 190 225 260 Va
c
85
86
87
88
Input Voltage
89
90
91%
Power Losses
5
6
7
8
Input Voltage
9W
85 120 155 190 225 260 Va
c

All parameters are specified at 24V, 2.1A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM034A-EN-P — March 2014 9
Bulletin 1606 Switched Mode Power Supplies
12. Functional Diagram
Fig. 12-1 Functional diagram
Input Fuse
&
Input Filter
L
N
Output Over-
Voltage
Protection
DC-OK
Transistor
Signal
Input
Rectier
&
Inrush
Limiter
Power
Converter
Output
Voltage
Regulator
+
+
-
-
Output
Filter
V
OUT
DC
ok
DC-ok
Signal
13. Reliability
These units are extremely reliable and use only the highest quality materials. the number of critical components such
as electrolytic capacitors has been reduced.
AC 100V AC 120V AC 230V
Lifetime expectancy min. 34,000h 44,000h 54,000h 40ºC, 24V 2.1A
min. 112,000h 117,000h 111,000h 40ºC, 24V, 1.05A
min. 96,000h 125,000h 152,000h 25ºC, 24V, 2.1A
MTBF SN 29500, IEC 61709 2,383,000h 2,456,000h 2,613,000h 40°C, 24V, 2.1A
3,977,000h 4,100,000h 4,362,000h 25ºC, 24V, 2.1A
MTBF MIL HDBK 217F 1,021,000h 1,053,000h 1,120,000h 40ºC, 24V, 2.1A, Ground Benign GB40
1,370,000h 1,413,000h 1,503,000h 25ºC, 24V, 2.1A, Ground Benign GB25
The Lifetime expectancy shown in the table indicates the operating hours (service life) and is determined by the
lifetime expectancy of the built-in electrolytic capacitors.
Lifetime expectancy is specied in operational hours. Lifetime expectancy is calculated according to specications
from the manufacturer of the capacitor. The prediction model allows a calculation of up to 15 years from shipping date.
MTBF stands for Mean Time Between Failures; it is calculated according to statistical device failures and indicates
reliability of a device. It is the statistical representation of the likelihood of failure of a unit and does not necessarily
represent the life of a product.

All parameters are specified at 24V, 2.1A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
10 Rockwell Automation Publication 1606-RM034A-EN-P — March 2014
Bulletin 1606 Switched Mode Power Supplies
14. Front Side and User Elements
Fig. 14-1 Front side
DC-OK LED (green)
On when the voltage at the
output terminals is > 20 V
DC-OK LED and DC-OK signal
functions are synchronized
Output Voltage
Potentiometer
Turn to set the output voltage.
Factory set: 24.5V
Input Terminals
Spring-clamp terminals
N… Neutral input
L… Line (hot) input
... PE (Protective Earth) input
Output & Signal Terminals
Spring-clamp terminals
Dual terminals per pole
+Positive output
- Negative (return) output
Dual pins per pole
DC-OK Open collector output
Indicates an output
voltage higher than
20Vdc
15. Terminals and Wiring
All terminals are easy to access when mounted on the panel. Input and output terminals are separated from each
other (input below, output above) to help in error-free wiring. Mounting and wiring do not require a screwdriver.
slanimretpmalc-gnirpstcennoc-kciuQepyT
mm4-3.0eriwdiloS
2
mm5.2-3.0eriwdednartS
2
American wire gauge 26-12 AWG
deriuqertontub,dewollAselurreF
Wire stripping length 6mm / 0.25inch
N04:GWA61,N05:GWA41,N06:GWA21ecroftuo-lluP
(according to UL486E)
Fig. 15-1 Connecting a wire
Instructions:
a) Use appropriate copper cables
b) Follow local and national installation codes and
regulations!
c) Ensure that all strands of a stranded wire enter
the terminal connection!
d) Do not use the unit without PE connection.

All parameters are specified at 24V, 2.1A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM034A-EN-P — March 2014 11
Bulletin 1606 Switched Mode Power Supplies
16. EMC
The CE mark indicates conformance with EMC guideline 89/336/EEC, 93/68/EEC and the low-voltage directive (LVD)
73/23/EWG.
EMC Immunity EN 61000-6-2, EN 61000-6-1 Generic standards
Electrostatic discharge EN 61000-4-2 Contact discharge
Air discharge
8kV
8kV
Criterion A
Criterion A
Electromagnetic RF eld EN 61000-4-3 80MHz-1Ghz 10V/m Criterion A
Fast transients (Burst) EN 61000-4-4 Input lines 4kV Criterion A
Output lines 2kV Criterion A
Surge voltage on input EN 61000-4-5 L
N
N / L PE
2kV
4kV
Criterion A
Criterion A
Surge voltage on output EN 61000-4-5 +
-
+ / - PE
500V
500V
Criterion A
Criterion A
Conducted disturbance EN 61000-4-6 0,15-80MHz 10V Criterion A
Mains voltage dips EN 61000-4-11 0% of 100Vac
40% of 100Vac
70% of 100Vac
0% of 200Vac
40% of 200Vac
70% of 200Vac
0Vac, 20ms
40Vac, 200ms
70Vac, 500ms
0Vac, 20ms
80Vac, 200ms
140Vac, 500ms
Criterion A
Criterion C
Criterion A
Criterion A
Criterion A
Criterion A
CnoiretirCsm0005,caV0Voltage interruptions EN 61000-4-11
Input voltage swells Rockwell Automation internal standard AnoiretirCsm005,caV003
Powerful transients VDE 0160 over entire load
range 750V, 1.3ms Criterion A
Criteria:
A: Power supply shows normal operation behavior within the dened limits.
C: Temporary loss of function is possible. Power supply might shut-down and restarts by itself. The power supply will incur no
damage or hazard.
EMC Emission sdradnatscireneG4-6-00016NE,3-6-00016NE
Conducted emission EN 55011, EN 55022, FCC Part 15, CISPR 11, CISPR 22 Class B, input lines
seniltuptuo,BssalC22055NE
BssalC22055NE,11055NEnoissimedetaidaR
dellifluF2-3-00016NEtnerructupnicinomraH
Voltage uctuations, icker dellifluF3-3-00016NE
This device complies with FCC Part 15 rules.
Operation is subjected to the following two conditions: (1) this device may not cause harmful interference, and (2) THIS
device must accept any interference received, including interference that may cause undesirable operation.
Switching frequency variable, typ. 100kHz, (60-275kHz) Input voltage and output load dependent

All parameters are specified at 24V, 2.1A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
12 Rockwell Automation Publication 1606-RM034A-EN-P — March 2014
Bulletin 1606 Switched Mode Power Supplies
17. Environment
Operational temperature -10°C to +70°C (14°F to 158°F) Reduce output power according to Fig. 17-1
ees,)F°851otF°041(C°07-06C°/W3.1gnitar-edtuptuO
Fig. 17-1
Storage temperature -40 to +85°C (-40°F to 185°F) Storage and transportation
03-2-86006CEI.H.r%59ot5ytidimuH
Do not energize while condensation is present
Vibration sinusoidal 2-17.8Hz: ±1.6mm; 17.8-500Hz: 2g
2 hours / axis
IEC 60068-2-6
sm11g01,sm6g02kcohS
3 bumps / direction, 18 bumps in total
IEC 60068-2-27
tneibmarorewoptuptuoecudeR)tf00002ot0(m0006ot0edutitlA
temperature above 2000m sea level.
Output de-rating (for altitude) 3W/1000m or 5°C/1000m Above 2000m (6500ft), see Fig 17-2
05NEIIIyrogetacegatlov-revO 178, IEC 62103 al titudes < 2000m
m0006otm0002morfsedutitlAII
evitcudnocnon,30126CEI,87105NE2noitullopfoeergeD
Fig. 17-1 Output current vs. ambient temp. Fig. 17-2 Output current vs. altitude, 24V
0
-10 0 20 40 70° C
0.4
0.8
1.2
1.6
2.0
2.4A
60
Ambient Temperature
Allowable Output
Current at 24V
0
0 2000 4000 6000m
0.4
0.8
1.2
1.6
2.0
2.4A
Altitude
A...Tamb<60°C
B...Tamb<50°C
C...Tamb<40°C
ABC
Allowable Output
Current at 24V
The ambient temperature is dened 2cm below the unit.
18. Protection Features
Output protection Electronically protected against overload, no-load and short-circuits.
Output over-voltage protection typ. 36V
max. 39V
In case of an internal power supply fault, a redundant
circuit limits the maximum output voltage. The output
shuts down and automatically attempts to restart.
Output over-current protection electronically limited see Fig. 10-1
Degree of protection IP 20 EN/IEC 60529
Penetration protection > 2.5mm in diameter E.g. screws, small parts
Over-temperature protection not included
Input transient protection MOV Metal Oxide Varistor
Internal input fuse T3.15A H.B.C. Not user replaceable
Note: In case of a over-voltage, overload, no-load or short-circuit event, an audible noise may be heard.

All parameters are specified at 24V, 2.1A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM034A-EN-P — March 2014 13
Bulletin 1606 Switched Mode Power Supplies
19. Safety
Input / output separation SELV IEC/EN 60950-1
14-4-46306CEI,30126CEI,87105NE,1-40206NEVLEP
nierroelbuod forced insulation
deriuqernoitcennoc)htraEev
itcetorP(EPInoitcetorpfossalC
Isolation resistance > 5MOhm input to output, 500Vdc
Touch current (leakage current) typ. 0.12mA 100Vac, 50Hz, TN mains
sniamNT,zH06,caV021Am71.0.pyt
sniamNT,zH05,caV032Am92.0.pyt
sniamNT,zH05,caV011Am61.
0<
sniamNT,zH06,caV231Am32.0<
sniamNT,zH05,caV462Am04.0<
20. Dielectric Strength
Fig. 20-1 Dielectric strength
A B C
Type test 60s 2500Vac 3000Vac 500Vac
Factory test 5s 2500Vac 2500Vac 500Vac
Field test 5s 2000Vac 2000Vac 500Vac
A
C
N
L
Input
Earth, PE
B
Output
-
+
DC-
Ok
Type tests and factory tests:
Conducted by the manufacturer. Do not repeat test in eld!
Rules for eld test:
Use appropriate test equipment which applies the voltage
with a slow ramp! Connect L and N together as well as all
output poles.
The output voltage is oating and had no ohmic connection to ground.
To fulll the PELV requirements according to EN60204-1 § 6.4.1, it is recommended that either the + pole, the - pole
or any other part of the output circuit be connected to the protective earth system. This helps to avoid
situations in which a load starts unexpectedly or cannot be switched o in the occurence of unnoticed earth faults.

All parameters are specified at 24V, 2.1A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
14 Rockwell Automation Publication 1606-RM034A-EN-P — March 2014
Bulletin 1606 Switched Mode Power Supplies
Product certification information (including Certificates and Declarations of Conformity) can be found at www.ab.com/certifications.
21. Certications
UL 508
IND. CONT. E
Q
.
LISTED as Industrial Control Equipment E198865
UL 60950-1 RECOGNIZED E168663 recognized for use in the U.S.A. (UL 60950-1) and Canada
(C22.2 No. 60950). Information Technology Equipment, Level 3
NEC Class 2 Listed as Limited Power Source (LPS) in the UL 60950-1 UL report.
ISA 12.12.01, CSA
C22.2 No. 213
RECOGNIZED UNDER FILE NUMBER E244404 for use in the U.S.A. (ISA 12.12.01)
and Canada (C22.2 No. 213)
Hazardous Location Class I, Div. 2, Groups A, B, C, D
Marine GL
GL
GL (Germanischer Lloyd) classied for marine and oshore applications.
Environmental category: C, EMC2. See below for link to Certicate.
SEMI F47
SEMI F47-0706 Voltage Sag Immunity Compliance. See below for link to
Certicate.
EN 60950-1,
EN 61204-3 Complies with CE EMC and CE Low Voltage Directives
Marine RINA RINA (Registro Italiana Navale) certied. See below for link to Certicate.
GOST R GOST R certication is applicable for products intended for sale and use
within Russia. See below for link to Certicate.
C-TICK C-tick compliance is for products intended for sale and use within the
Australian market. See below for the link to the C-Tick Declarations
of Conformity.
22. Environment Compliance
Electrolytic capacitors included in this unit do not use electrolytes such as Quaternary Ammonium Salt Systems.
Plastic housings and other molded plastic materials are fre e of halogens, wires and cables are not PVC insulated.
The unit conforms to the RoHS directive 2002/96/EC
The materials used in our production process do not include the following toxic chemicals:
Polychlorinated Biphenyl (PCB), Pentachlorophenol (PCP), Polychlorinated naphthalene (PCN), Polybrominated
Biphenyl (PBB), Polybrominated Biphenyl Oxide (PBO), Polybrominated Diphenyl Ether (PBDE), Polychlorinated
Diphenyl Ether (PCDE), Polybrominated Diphenyl Oxide (PBDO), Cadmium, Asbestos, Mercury, Silica

All parameters are specified at 24V, 2.1A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM034A-EN-P — March 2014 15
Bulletin 1606 Switched Mode Power Supplies
23. Physical Dimensions and Weigth
Weight 240g / 0.53lb
DIN Rail Use 35mm DIN rails according to EN 60715 or EN 50022 with a height of 7.5 or 15mm.
The DIN rail height must be added to the de pth (91mm) to calculate the total required
installation depth.
Fig. 23-1 Front view Fig. 23-2 Side view
24. Installation and Operation Instructions
Mounting:
Output terminal must be located on top and input terminal on the bottom. For other orientations, see section 26-12.
An appropriate electrical and re end-product enclosure should be considered in the end use application.
Cooling:
Convection cooled, no forced cooling required. Do not cover ventilation grille (e.g. cable conduits) by more than 30%!
Installation clearances:
25mm on top and bottom.
Risk of electrical shock, re, personal injury or death!
Do not use the unit without proper ground connection (Protective Earth).
Turn power o before working on the power supply. Protect against inadvertent re-powering.
Make sure the wiring is correct by following all local and national codes.
Do not open, modify or repair the unit.
Use caution to prevent any foreign objects from entering into the housing.
Do not use in wet locations or in areas where moisture or condensation is likely to occur.
Service parts:
The unit does not contain any service parts. The tripping of an internal fuse is caused by an internal fault. Should
damage or malfunction occur during operation, turn power o immediately and return the unit to the factory for
inspection!

All parameters are specified at 24V, 2.1A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
16 Rockwell Automation Publication 1606-RM034A-EN-P — March 2014
Bulletin 1606 Switched Mode Power Supplies
25. Accessory
DIN Rail bracket for wall or panel mount
A DIN rail bracket is included in each shipping box.
Fig. 25-1 DIN Rail Bracket Dimensions
Hole diameter: 4.2mm
1606-XLPRED Dual decoupling module 2x5A
Fig. 25-2 1606-XLPRED Dual Decoupling Module
Fig. 25-3 Redundant Systemwith two 1606-XLP50E
and one 1606-XLPRED
XLPRED
V
OUT
V
IN
1
+ +
- -
+
-
+
-
V
IN
2
1606-
XLP50E
adj.
L N
+ +
- -
DC
ok
1606-
XLP50E
adj.
L N
+ +
- -
DC
ok
L
N
PS1 ok PS2 ok
Load
+
-
II

All parameters are specified at 24V, 2.1A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM034A-EN-P — March 2014 17
Bulletin 1606 Switched Mode Power Supplies
26. Application Notes
26.1. Peak Current Capability
Solenoids, contactors and pneumatic modules often have a steady state (sealed) coil and a pick-up coil. The inrush
current demand of the pick-up coil is several times higher than the steady state current and usually exceeds the
nominal output current. The same situation applies when starting a capacitive load.
Branch circuits are often protected with circuit breakers or fuses. In case of a short or an overload in the branch
circuit, the protective device (fuse, circuit breaker) needs a certain amount of over-current to trip or to blow. The
peak current capability ensures the safe operation of subsequent circuit breakers.
Assuming the input voltage is turned on before such an event, the built-in large sized output capacitors inside the
power supply can deliver extra current. Discharging this capacitor causes a voltage dip on the output. The following
examples show typical voltage dips:
Fig. 26-1 Peak load 4.2A for 50ms, typ. Fig. 26-2 Peak load 10.5A for 5ms, typ.
10ms/DIV
Output
Voltage
Output
Current
24.0V
0A
4.2A
16V
1ms/DIV
Output
Voltage
Output
Current
24.0V
0A
10.5A 10.5V
Peak load 4.2A (resistive) for 50ms
Output voltage dips from 24V to 16V.
Peak load 10.5A (resistive) for 5ms
Output voltage dips from 24V to 10.5V.
26.2. Back-feeding Loads
Loads such as decelerating motors and inductors can feed voltag e back to the power supply. This feature is also called
return voltage immunity or resistance against Back-EMF (Electro Magnetic Force).
This power supply is resistant and does not show malfunction when a load feeds back voltage to the power
supply. It does not matter, whether the power supply is on or o.
The maximum allowed feed back voltage is 35Vdc. The absorbing energy can be calculated according to the built-in
large sized output capacitor which is specied in section 10.

All parameters are specified at 24V, 2.1A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
18 Rockwell Automation Publication 1606-RM034A-EN-P — March 2014
Bulletin 1606 Switched Mode Power Supplies
26.3. Series Operation
The power supply can be put in series to increase the output voltage.
Fig. 26-3 Schematic for series operation
Instructions for use in series:
Earth
Unit A
AC
DC
Unit B
AC
DC
-
+
-
+
Load
+
-
a) It is possible to connect as many units in series as needed,
providing the sum of the output voltage does not exceed
150Vdc.
b) Voltages with a potential above 60Vdc are no longer SELV
and can be dangerous. Such voltages must be installed
with a protection against touching.
c) For serial operation use power supplies of the same type.
d) Earthing of the output is required when the sum of the
output voltage is above 60Vdc.
Note: Avoid return voltage (e.g. from a decelerating motor or
battery) which is applied to the output terminals.
26.4. Parallel Use to Increase Output Power
Several power supplies can be paralleled to increase the output power. The 1606-XLP50E does not include a feature
to balance the load current between the power supplies. Usually the power supply with the higher adjusted output
voltage draws current until it goes into current limitation. This causes no harm to the power supply as long as the
ambient temperature stays below 50°C.
Fig. 26-4 Schematic for parallel operation
Instructions for parallel use:
Unit A
AC
DC
Unit B
AC
DC
-
+
-
+
Load
+
-
a) Use only power supplies from the same series.
b) Adjust the output voltages of all power supplies to
approximately the same value (±200mV).
c) A fuse (or diode) on the output is only required if more than
three units are connected in parallel.
d) Do not load terminals with more than 13A. Follow wiring
instructions according to section 27.6.
e) Ensure that the ambient temperature of the power supply
does not exceed 50°C.
26.5. Parallel Use for Redundancy
Power supplies can be paralleled for redundancy to gain a higher system reliability. Redundant systems require a
certain amount of extra power to support the load in case one power unit fails. The simplest way is to put to
power supplies in parallel. This is called a 1+1 redundancy. Should one power supply fail, the second
is automatically able to support the load current without any interruption. Redundant systems for a higher power
demand are usually built in a N+1 method. E.g. Five power supplies, each rated for 2.1A are paralleled to build a 8A
redundant system. If one unit fails, the 8A can still be drawn.

All parameters are specified at 24V, 2.1A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM034A-EN-P — March 2014 19
Bulletin 1606 Switched Mode Power Supplies
Please note: This simple way to build a redundant system has two major disadvantages.
- The faulty power supply cannot be identied. The green LED will still be on since it is reverse-powered from
the other power supply.
- It does not cover failures such as an internal short circuit in the secondary side of the power supply. In such a
situation the defective unit becomes a load for the other power supplies and the output voltage can no
longer be maintained.
The above conditions can be avoided by using decoupling diodes which are included in the 1606-XLPRED
decoupling module.
Other recommendations for building redundant power systems:
a) Use separate input fuses for each power supply.
b) Monitor the individual power s upply units. A DC-ok output is included in the 1606-XLP50E and 1606-XLP50EZ
In all other cases, use the the 1606-XLERED redundancy module which includes a monitoring circuit for
each input.
c) When possible, connect each power supply to dierent phases of the mains network.
26.6. Daisy Chaining of Outputs
Daisy chaining (jumping from one power supply output to the next) is allowed as long as the maximum current
through one terminal pin does not exceed 13A. If the current is higher, use a separate distribution terminal block.
Fig. 26-5 Daisy chaining of outputs
Fig. 26-6 Using distribution terminals
Power
Supply
+ + - -
Input
Output
Load
+ -
max 13A!
Power
Supply
+ + - -
Input
Output
Load
+ -
Distribution
Terminals
Power
Supply
+ + - -
Input
Output
Power
Supply
+ + - -
Input
Output
26.7. Charging Batteries
The power supply can be used for oat-charging of lead-acid or maintenance-free 24V VRLA batteries.
Instructions for charging batteries:
a) Ensure that the ambient temperature of the power supply does not exceed 50°C.
b) Set the output voltage on a disconnected load, very precisely to the end-of-charge voltage according to the
expected battery temperature.
End-of-charge voltage 27.8V 27.5V 27.15V 26.8V
Battery temperature 10°C 20°C 30°C 40°C
c) Use a 4A or 6A circuit breaker (or blocking diode ) between the power supply and the battery.
d) Ensure that the output current of the power supply is below the allowed charging current of the battery.
e) Use only matched batteries when putting 12V types in series.
f) The return current to the power supply is typ. 10.7mA at 25Vdc when the power supply is switched o (except if
using a blocking diode).

All parameters are specified at 24V, 2.1A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
20 Rockwell Automation Publication 1606-RM034A-EN-P — March 2014
Bulletin 1606 Switched Mode Power Supplies
26.8. External Input Protection
T
he unit is tested and approved for branch circuits up to 15A (UL) or 16A (IEC). External protection is required only if
the supplying branch has an ampacity greater than this. In some countries, local regulations may apply, so check local
codes and requirements.
If using an external protective device, a minimum value is required to avoid undesired tripping of the fuse.
citsiretcarahC-CcitsiretcarahC-B
Ampacity max.
min. 10A 6A
15A (UL), 16A (IEC) 15A (UL), 16A (IEC)
26.9. Inductive and Capacitive Loads
T
he unit is designed to supply any type of load, including unlimited capacitive and inductive loads.
26.10. Operation on Two Phases
Fig. 26-7 Schematic for two phase operation
240V
+10%
max.
Fuse
L2
L1
L3
L
N
PE
Power Supp ly
AC
DC
internal
fuse
Instructions for two phase operation:
a) A phase to phase connection is allowed as long as the
supplying voltage is below 240V+10%
.
b) Use a fuse or a circuit breaker to protect the N input. The
N input is not protected internally; in this case it is
connected to a hot wire.
Appropriate fuses or circuit breakers are specied in section 27-6,
“External Input Protection”.
26.11. Use in a Tigthly Sealed Enclosure
When the power supply is installed in a tightly sealed enclosure, the temperature inside the enclosure will be higher
than the outside. The inside temperature denes the ambient temperature for the power supply.
Results from such an installation:
Power supply is placed in the middle of the box; no other heat producing equipment is inside the box.
Enclosure: Rittal Type IP66 Box PK 9510 100, plastic, 130x130x75mm
Input: 230Vac
Load: 24V, 2.1A; load is placed outside the box.
Temperature inside the box: 40.8°C (in the middle of the right side of the power supply with a distannce of 1cm)
Temperature outside the box: 21.9°C
Temperature rise: 18.9K
Load: 24V, 1.7A; load is placed outside the box.
Temperature inside the box: 38.7°C (in the middle of the right side of the power supply with a distance of 1cm)
Temperature outside the box: 21.7°C
Temperature rise: 17.0K