Allen-Bradley Power Supply Reference Manual

Reference Manual
Bulletin 1606 Switched Mode Power Supplies
Catalog Number: 1606-XLS960FE
Index
Page
1. Intended Use .......................................................3
2. Installation Requirements...................................3
3. AC-Input...............................................................4
4. Input Inrush Current ...........................................5
5. DC-Input...............................................................5
6. Output .................................................................6
7. Hold-up Time.......................................................8
8. DC-OK Relay Contact ..........................................9
9. Shut-down Input .................................................9
10. Remote Control of Output Voltage .................10
11. Internal Data Logging.......................................10
12. Efficiency and Power Losses..............................11
13. Lifetime Expectancy and MTBF.........................12
14. Functional Diagram...........................................12
15. Terminals and Wiring........................................13
16. Front Side and User Elements...........................14
17. EMC....................................................................15
18. Environment ......................................................16
19. Protection Features ...........................................17
20. Safety Features ..................................................17
21. Dielectric Strength ............................................18
Page
22. Certifications ................................................... 18
23. Physical Dimensions and Weight ..................... 19
24. Accessories ........................................................ 20
24.1. 1606-XLC Wall Mounting Bracket ............ 20
24.2. 1606-XLSBUFFER48 Module ..................... 20
25. Application Notes ............................................. 22
25.1. Repetitive Pulse Loading ..........................22
25.2. Peak Current Capability ...........................23
25.3. External Input Protection .........................23
25.4. Charging of Batteries ...............................24
25.5. Output Circuit Breakers ............................24
25.6. Parallel Use to Increase Output Power ....25
25.7. Parallel Use for Redundancy ....................25
25.8. Series Operation .......................................26
25.9. Inductive and Capacitive Loads ................26
25.10. Back-feeding Loads ..................................26
25.11. Operation on Two Phases ........................27
25.12. Use in a Tightly Sealed Enclosure ............27
25.13. Mounting Orientations ............................28
Terminology and Abbreviations
•
•
•
•
•
•
•
•
•
PE and 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, AC 230V parameters are valid at 50Hz 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
Bulletin 1606 Switched Mode Power Supplies
Power Supply
AC 200-240V Input
Width only 125mm, Weight only 1.8kg
95.0% Full Load and Excellent Partial Load Efficiencies
50% BonusPower, 1440W for up to 4s
55A High Peak Current for 25ms for Easy Fuse Tripping
Safe HiccupPLUS Overload Mode
Active PFC (Power Factor Correction)
Negligible Low Input Inrush Current Surge
Full Power Between -25°C and +60°C
Current Sharing Feature for Parallel Use
Internal Data Logging for Troubleshooting Included.
DC-OK Relay Contact
Shut-down Input
3 Year Warranty
Description
Specification Quick Reference
The most outstanding features of our family of DIN rail
power supplies are their extremely high efficiency and
their small footprint, which are achieved by a
synchronous rectification and other technological
innovations.
Output voltage
Adjustment range
Output current
The 1606-XLS960FE is a device for 200-240V mains
voltages. Large power reserves of 150% support the
starting of heavy loads such as DC motors or capacitive
loads. In many cases, this allows the use of a unit from a
lower wattage class which saves space and money.
High immunity to transients and power surges as well as
low electromagnetic emission make usage in nearly
every environment possible.
The integrated output power manager and input fuses
as well as the near zero input inrush current make
installation and usage simple. Diagnostics are easy due
to the DC-OK relay, a green DC-OK LED and the red
overload LED.
A large international approval package for a variety of
applications makes this unit suitable for nearly every
application.
Catalog Numbers
Power Supply 1606-XLS960FE
Accessories
DC 48V
nominal
48 - 54V
20 – 17.8A
continuous
30 – 26.7A
short term (4s)
Output power
960W
continuous
1440W
short term (4s)
Output ripple
< 150mVpp
20Hz to 20MHz
Input voltage
AC 200-240V
-15%/+10%
Mains frequency
50-60Hz
±6%
AC Input current
4.6A
at 230Vac
Power factor
0.96
at 230Vac
AC Inrush current
typ. 14A peak
at 230Vac
Efficiency
95.0%
at 230Vac
Losses
50.5W
at 230Vac
Temperature range -25°C to +70°C operational
Derating
24W/°C
+60 to +70°C
Hold-up time
typ. 30ms
at 230Vac
Dimensions
125x124x127mm WxHxD
Weight
1800g / 3.97lb
Certifications
48-54V Standard unit
16060-XLC
Wall mount bracket
1606-XLSBUFFER48
Buffer unit
IND. CONT. EQ.
UL 508
Marine
2
Marine RINA
UL 60950-1
EMC, LVD, RoHS
GOST R
C-TICK
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
Bulletin 1606 Switched Mode Power Supplies
1. 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.
• This device is designed for use in non-hazardous, ordinary or unclassified locations.
2. 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 Mounting.
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 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
3
Bulletin 1606 Switched Mode Power Supplies
3. AC Input
AC input
AC input range
nom.
min.
min.
min.
Allowed voltage L or N to earth
Input frequency
Turn-on voltage
Shut-down voltage
Input current
Power factor*)
Crest factor**)
Start-up delay
Rise time
max.
nom.
typ.
typ.
typ.
typ.
typ.
typ.
typ.
typ.
max.
Turn-on overshoot
AC 200-240V
170-264Vac
110-170Vac
0-170Vac
264-300Vac
300Vac
50–60Hz
164Vac
151Vac
4.6A
0.96
1.65
750ms
18ms
35ms
200mV
suitable for TN, TT and IT mains networks
continuous operation
full power for up to 200ms
no damage to the unit
< 500ms
continuous, IEC 62103
±6%
steady-state value, load independent, see Fig. 3-1
steady-state value, load independent, see Fig. 3-1
at 48V, 20A, see Fig. 3-3
at 48V, 20A, see Fig. 3-4
at 48V, 20A
see Fig. 3-2
at 48V, 20A, resistive load, 0mF see Fig. 3-2
at 48V, 20A, resistive load, 20mF see Fig. 3-2
see Fig. 3-2
*) 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. 3-1 Input voltage range
Input
Voltage
Turn-on
Shut-down
Rated input range
VIN
151V 164V
170V
Start-up
delay
Rise
Time
264Vac
Fig. 3-3 Input current vs. output load at 48V
Fig. 3-4 Power factor vs. output load at 48V
Input Current, typ.
6A
1.00
5
0.95
4
Power Factor, typ.
0.90
3
0.85
2
0.80
1
Output Current
0
2
4
- 5%
Output
Voltage
Overshoot
POUT
Fig. 3-2 Turn-on behavior, definitions
4
6
8 10 12 14 16 18 20A
Output Current
0.75
2
4
6
8 10 12 14 16 18 20A
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
Bulletin 1606 Switched Mode Power Supplies
4. Input Inrush Current
The power supply is equipped with an active inrush current limitation circuit, which limits the input inrush current
after turn-on to a negligible low value. The input current is usually smaller than the steady state input current.
Inrush current*)
max.
typ.
max.
typ.
Inrush energy
Inrush delay
*)
18Apeak
14Apeak
4A2s
750ms
over entire temperature range
over entire temperature range
over entire temperature range
The charging current into EMI suppression capacitors is disregarded in the first microseconds after switch-on.
Fig. 4-1 Typical turn-on behavior at nominal
load and 25°C ambient temperature
Input Current 5A / DIV
Input
230Vac
48Vdc
Output
50mS/DIV
5. DC Input
Do not operate this power supply with DC input voltage. Check the 1606-XLE480FP-D instead.
Two 1606-XLE480FP-D units in parallel may be necessary.
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
5
Bulletin 1606 Switched Mode Power Supplies
6. Output
Output voltage
Adjustment range
Factory setting
Line regulation
Load regulation
Ripple and noise voltage
Output current
Output power
BonusPower time
BonusPower recovery time
Overload behavior
Short-circuit current
Output capacitance
*)
**)
***)
****)
6
nom.
min.
max.
typ.
typ.
typ.
max.
max.
typ.
48V
48-54V
56V****)
48.0V
46.0V
48.0V
10mV
50mV
2000mV
max.
nom.
nom.
nom.
150mVpp
20A
17.8A
30A
nom.
26.7A
typ.
55A
nom.
nom.
typ.
typ.
min.
max.
max.
960W
1440W*)
4s
7s
cont. current
HiccupPLUS mode**)
30A***)
35A***)
11.5A
min.
typ.
typ.
55A
63A
3 700μF
guaranteed
at clockwise end position of potentiometer
±0.2%, at full load, cold unit, in “single use” mode
±0.2%, at full load, cold unit, in “parallel use” mode
at no load, cold unit, in “parallel use” mode
170-264Vac
in “single use” mode: static value, 0A 20A, see Fig. 6-1
in “parallel use” mode: static value, 0A 20A,
see Fig. 6-2
20Hz to 20MHz, 50Ohm
continuously available at 48V, see Fig. 6-1 and Fig. 6-2
continuously available at 54V, see Fig. 6-1 and Fig. 6-2
short term available BonusPower®*), at 48V
for typical 4s, see Fig. 6-1 and Fig. 6-2
short term available BonusPower®*), at 54V
for typical 4s, see Fig. 6-1 and Fig. 6-2
up to 25ms, output voltage stays above 40V, see Fig.
6-4, This peak current is available once every second.
See section 25.2 for more peak current measurements.
continuously available at 48-54V
short term available BonusPower*) at 48-54V
duration until the output voltage dips, see Fig. 6-5
overload free time to reset power manager, see Fig. 6-6
output voltage > 40Vdc, see Fig. 6-1
output voltage < 40Vdc, see Fig. 6-1
load impedance 50mOhm, see Fig. 6-3
load impedance 50mOhm, see Fig. 6-3
average (R.M.S.) current, load impedance 50mOhm, see
Fig. 6-3
up to 25ms, load impedance <10mOhm, see Fig. 6-4
up to 25ms, load impedance <10mOhm, see Fig. 6-4
included in the power supply
BonusPower, short term power capability (up to typ. 4s)
The power supply is designed to support loads with a higher short-term power requirement without damage or shutdown. The shortterm duration is hardware-controlled by an output power manager. BonusPower is repeatedly available. Detailed information
can be found in section 25.1. If the power supply is loaded with the BonusPower longer than shown in the Bonus-time diagram (see
Fig. 6-5), the max. output power is automatically reduced to 960W. If the power requirement is continuously above 960W and the
voltage falls below approx. 40V (due to the current regulating mode at overload), the unit shuts-off and makes periodical restart
attempts. This behavior is called hiccup mode which is described below. If the voltage is above 40V, the unit continuously delivers
current.
HiccupPLUS Mode
Up to 4s of overloading, the power supply delivers continuous output current. After this, the output power is reduced to nearly zero
for approx. 17s before a new start attempt is automatically performed. If the overload has been cleared, the device will operate
normally. If the overload still exists, the output current will be delivered for 2 to 4s (depending on the overload) again followed by a
17s rest time. This cycle is repeated as long as the overload exists. See Fig. 6-3. During the off-period a small rest voltage and rest
current is present on the output.
Discharge current of output capacitors is not included.
This is the maximum output voltage which can occur at the clockwise end position of the potentiometer due to tolerances. There is
no guarantee this value can be achieved. The typical value is about 55V.
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
Bulletin 1606 Switched Mode Power Supplies
Fig. 6-1 Output voltage vs. output current in
“single use” mode, typ.
Fig. 6-2 Output voltage vs. output current in
“parallel use” mode, typ.
Output Voltage
Output Voltage (Parallel Use, typ.)
Adjustment Range
56V
56V
A
48
B
A
40
Adjustment Range
54V
B
52V
32
Continuously
allowed
50V
A Continuously
24
available
B Short-term (4s)
then switching
to curve A
16
8
0
0
5
10
15
Bonus
Power
48V
Hiccup
mode
Factory
setting
46V
44V
42V
25
20
30
35A
0
10
5
15
20
25
30A
Output Current
Output Current
Fig. 6-3 Short-circuit on output, HiccupPLUS mode, typ.
Fig. 6-4 Dynamic overcurrent capability, typ.
Output Voltage (dynamic behavior, < 25ms)
54V
Output
Current
Normal
operation
Normal
operation
Short -circuit
35A
Adjustment
Range
48
40
32
24
t
0
2s
17s
2s
17s
2s
17s
16
8
0
Output Current
0
Fig. 6-5 Bonus time vs. output power
10
20
30
40
50
60
70A
Fig. 6-6 BonusPower recovery time
Bonus Time
5s
max.
4
Limitation by
Power Manager
Power
Demand
100%
min.
3
t
2
Output
Voltage
1
0
100
Recovery Time
Bonus Power disabled
Bonus
Time
Output Power
t
110 120 130 140 150 160 170%
BonusPower is available as soon as power comes on and after the end of an output short circuit or output
overload.
Fig. 6-7 BonusPower after input turn-on
Fig. 6-8 BonusPower after output short
Short of
Output
Input
Voltage
Output
Voltage
Output
Voltage
150%
Output
Power
100%
Bonus
Power
Output
Power
150%
Bonus
Power
100%
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
7
Bulletin 1606 Switched Mode Power Supplies
7. Hold-up Time
Hold-up Time
typ.
min.
typ.
min.
Fig. 7-1 Hold-up time vs. input voltage
AC 230V
58ms
47ms
30ms
24ms
at 48V, 10A, see Fig. 7-1
at 48V, 10A, see Fig. 7-1
at 48V, 20A, see Fig. 7-1
at 48V, 20A, see Fig. 7-1
Fig. 7-2 Shut-down behavior, definitions
Hold-up Time
Zero Transition
48V, 10A, typ.
60ms
50
48V, 10A, min.
Input
Voltage
40
48V, 20A, typ.
30
20
48V, 20A, min.
10
170
8
Hold-up Time
Input Voltage
0
190
210
230
- 5%
Output
Voltage
250Vac
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
Bulletin 1606 Switched Mode Power Supplies
8. DC-OK Relay Contact
This feature monitors the output voltage, which is produced by the power supply itself. It is independent of a back-fed
voltage from a unit connected in parallel to the power supply output.
Contact closes
Contact opens
As soon as the output voltage reaches 90% of the adjusted output voltage.
As soon as the output voltage dips more than 10% below the adjusted output voltage.
Short dips will be extended to a signal length of 250ms. Dips shorter than 1ms will be ignored.
As soon as the output voltage exceeds 90% of the adjusted voltage.
max
60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A
resistive load
min
1mA at 5Vdc
min. permissible load
See dielectric strength table in section 21.
Contact re-closes
Contact ratings
Isolation voltage
Fig. 8-1 DC-ok relay contact behavior
VOUT = VADJ
10%
<
1ms
open
>
1ms
closed
0.9* VADJ
250ms
open
closed
9. Shut-down Input
This feature allows a switch-off of the output of the power supply with a signal switch or an external voltage. The
shut-down function ramps down and has no safety feature included. The shut-down occurs immediately while the
turn-on is delayed up to 350ms. In a shut-down condition, the output voltage is <4V and the output power is <0.5W.
The voltage between different minus pole output terminals must be below 1V when units are connected in parallel. In
a series operation of multiple power supplies only wiring option “A” with individual signal switches is allowed.
Please note that option C requires a current sink capability of the voltage source. Do not use a blocking diode.
Fig. 9-1 Activation of the shut-down input
Option A:
Option B:
15 Shutdown
16 Input
OFF: linked
ON : open
(via open
collector)
n.c.
I
15 Shutdown
16 Input
Option C:
n.c.
(via external
voltage
15 Shutdown
16 Input
+
OFF: I > 0.3mA
ON : I < 0.1mA
-
U
OFF: U < 1V
ON : U = 4 -29V
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
-
9
Bulletin 1606 Switched Mode Power Supplies
10. Remote Control of Output Voltage
This capacity is not supported by the 1606-XLS960FE unit.
11. Internal Data Logging
A protected microcontroller inside the power supply acquires and stores operating data during the life of the unit. The
data can be downloaded with a small tool and special software by Rockwell Automation service and repair personnel, as
well as in many instances should the unit fault. The stored data facilitates troubleshooting. Events occuring just before
a failure can be analyzed much more accurately.
Acquired data:
- Family name of unit (1606-XLS), revision of firmware
- Operational hours
- Expired portion of lifetime (combination of temperature and period of time)
- Maximum ambient temperatures with timestamp (max. 47 values)
- Maximal input voltages with timestamp (max. 47 values) and type of input voltage (AC or DC)
- Failure report (various internal errors)
- Number and timestamp (max. 20 values) of input overvoltage transients
- Number and timestamp (max. 20 values) of over-temperature shut-downs
- Number of turn-on sequences
The data will be acquired at a fixed sampling rate unless the peak detectors do trigger due to an abnormal
condition. In such cases, the abnormal condition will be captured. Furthermore, data will always be gathered just
before the unit switches off.
10
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
Bulletin 1606 Switched Mode Power Supplies
12. Efficiency and Power Losses
Efficiency
Average efficiency*)
Power losses
*)
typ.
typ.
typ.
typ.
typ.
typ.
AC 230V
95.0%
94.2%
3.2W
12.0W
30.1W
50.5W
at 48V, 20A
25% at 5A, 25% at 10A, 25% at 15A. 25% at 20A
with activated shut-down
at 48V, 0A (no load)
at 48V, 10A (half load)
at 48V, 20A (full load)
The average efficiency is an assumption for a typical application where the power supply is loaded with 25% of the nominal load for 25%
of the time, 50% of the nominal load for another 25% of the time, 75% of the nominal load for another 25% of the time and with 100%
of the nominal load for the rest of the time.
Fig. 12-1 Efficiency vs. output current at 48V,
typ.
Fig. 12-2 Losses vs. output current at 48V,
typ.
Efficiency
Power Losses
95%
60W
50
94
40
93
30
20
92
10
Output Current
91
4
6
8
10
12
14
Output Current
0
16
18 20A
0
2
4
6
8 10 12 14 16 18 20A
Fig. 12-3 Efficiency vs. input voltage at 48V,
20A, typ.
Fig. 12-4 Losses vs. input voltage at 48V, 20A,
typ.
Efficiency
Power Losses
96%
60W
55
95
50
45
94
40
35
Input Voltage
93
Input Voltage
30
170
190
210
230
250 270Vac
170
190
210
230
250 270Vac
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
11
Bulletin 1606 Switched Mode Power Supplies
13. Lifetime Expectancy and MTBF
AC 230V
345 000h*)
122 000h
184 000h*)
65 000h
392 000h
693 000h
158 000h
214 000h
Calculated lifetime expectancy*)
MTBF**) SN 29500, IEC 61709
MTBF**) MIL HDBK 217F
at 48V, 10A and 25°C
at 48V, 10A and 40°C
at 48V, 20A and 25°C
at 48V, 20A and 40°C
at 48V, 20A and 40°C
at 48V, 20A and 25°C
at 48V, 20A and 40°C; Ground Benign GB40
at 48V, 20A and 25°C; Ground Benign GB25
The calculated lifetime expectancy shown in the table indicates the minimum operating hours (service life) and is determined by the
lifetime expectancy of the built-in electrolytic capacitors. Lifetime expectancy is specified in operational hours and is calculated according
to the capacitor’s manufacturer specification. The manufacturer of the electrolytic capacitors only guarantees a maximum life of up to 15
years (131 400h). Any number exceeding this value is a calculated theoretical lifetime which can be used to compare devices.
**) MTBF stands for Mean Time Between Failure, which is calculated according to statistical device failures, and indicates reliability of a
device. It is the statistical representation of the likelihood of a unit to fail and does not necessarily represent the life of a product.
The MTBF figure is a statistical representation of the likelihood of a device to fail. A MTBF figure of e.g. 1 000 000h means that
statistically one unit will fail every 100 hours if 10 000 units are installed in the field. However, it can not be determined if the failed unit
has been running for 50 000h or only for 100h.
*)
14. Functional Diagram
Fig. 14-1 Functional diagram
Single /
Parallel
Output
Voltage
Regulator
L
N
Input Fuse
Input Filter
Input Rectifier
Inrush Limiter
Temperature
Shutdown
Output
Power
Manager
Event Datalogger
12
PFC
Converter
Output
OverVoltage
Protection
Power
Converter
Output
Voltage
Monitor
Output
Filter
VOUT
+
+
Overload
LED
DC-ok
LED
DC ok
Relay
Shutdown
13
14
15
DC-ok
Contact
Shut-down
Input
16
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
Bulletin 1606 Switched Mode Power Supplies
15. Terminals and Wiring
The terminals are IP20 Finger safe, constructed and suitable for field and factory wiring.
Type
Solid wire
Stranded wire
American Wire Gauge
Max. wire diameter
Wire stripping length
Screwdriver
Recommended tightening torque
Input
screw termination
0.5-6mm2
0.5-4mm2
AWG 20-10
2.8mm
(including ferrules)
7mm / 0.28inch
3.5mm slotted or crosshead No 2
1Nm, 9lb.in
Output
screw termination
0.5-16mm2
0.5-10mm2
AWG 22-8
5.2mm
(including ferrules)
12mm / 0. 5inch
3.5mm or 5mm slotted
or cross-head No 2
2.3Nm, 20.5lb.in
DC-OK, Shut-down
spring-clamp termination
0.15-1.5mm2
0.15-1.5mm2
AWG 26-14
1.5mm
(including ferrules)
7mm / 0.28inch
3mm slotted
(to open the spring)
Not applicable
Instructions:
a) Use appropriate copper cables that are designed for minimum operating temperatures of:
60°C for ambient up to 45°C and
75°C for ambient up to 60°C minimum
90°C for ambient up to 70°C minimum.
b) Follow national installation codes and installation regulations!
c) Ensure that all strands of a stranded wire enter the terminal connection!
d) Do not use the unit without PE connection.
e) Unused terminal compartments should be securely tightened.
f) Ferrules are allowed.
Daisy chaining:
Daisy chaining (jumping from one power supply output to the next) is allowed as long as the average output current
through one terminal pin does not exceed 54A. If the current is higher, use a separate distribution terminal block as
shown in Fig. 15-2.
Fig. 15-1 Daisy chaining of outputs
Power
Supply
Power
Supply
+ + -
+ + -
-
Output
-
Output
Fig. 15-2 Using distribution terminals
Distribution
Terminals
Load
+
-
Power
Supply
Power
Supply
+ + -
+ + -
-
Output
-
Output
Load
+
-
max 54A!
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
13
Bulletin 1606 Switched Mode Power Supplies
16. Front Side and User Elements
Fig. 16-1 Front side
A
Input Terminals (Screw terminals)
N, L Line input
...PE (Protective Earth) input
Output Terminals (Screw terminals, two pins per pole)
+
Positive output
–
Negative (return) output
C “Parallel Use” “Single Use” Selector
Set jumper to “Parallel Use” when power supplies are
connected in parallel to increase the output power. In order
to achieve a sharing of the load current between the
individual power supplies, the “parallel use” regulates the
output voltage in such a manner that the voltage at no load
is approx. 4% higher than at nominal load. See also section
25.6. A missing jumper is equal to a “Single Use” mode.
D Output Voltage Potentiometer
Multi turn potentiometer;
Open the flap to set the output voltage.
Factory set: 48.0V at full output current, “Single Use” mode.
E DC-OK LED (green)
On, when the voltage on the output terminals is >90% of the
adjusted output voltage
F Overload LED (red)
- On, when the voltage on the output terminals is <90% of
the adjusted output voltage, or in case of a short circuit in
the output.
- Flashing, when the shut-down has been activated or the
unit has switched off due to over-temperature.
- Input voltage is required
G DC-OK Relay Contact
The DC-OK relay contact is synchronized with the DC-OK LED.
See section 8 for details.
H Shut-down Input
Allows the power supply to be shut down. Can be activated
with a switch contact or an external voltage.
B
Indicators, LEDs
Normal mode
During BonusPower
Overload (Hiccup mode)
Output short circuit
Temperature Shut-down
Active Shut-down input
No input power
14
Overload LED
OFF
OFF
flashing
flashing
flashing
flashing
OFF
DC-OK LED
ON
ON
OFF
OFF
OFF
OFF
OFF
DC-OK Contact
Closed
Closed
Open
Open
Open
Open
Open
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
Bulletin 1606 Switched Mode Power Supplies
17. EMC
The power supply is suitable for applications in industrial environment as well as in residential, commercial and light
industry environment without any restrictions. A detailed EMC report is available on request.
EMC Immunity
Electrostatic discharge
Electromagnetic RF field
Fast transients (Burst)
Surge voltage on input
Surge voltage on output
Surge voltage on DC-OK
Conducted disturbance
Mains voltage dips
Voltage interruptions
Voltage sags
Powerful transients
According generic standards: EN 61000-6-1 and EN 61000-6-2
EN 61000-4-2
contact discharge
8kV
Criterion A
air discharge
15kV
Criterion A
EN 61000-4-3
80MHz-2.7GHz
10V/m
Criterion A
EN 61000-4-4
input lines
4kV
Criterion A
output lines
2kV
Criterion A
DC-OK signal (coupling clamp)
2kV
Criterion A
EN 61000-4-5
L
N
2kV
Criterion A
L
PE, N
PE
4kV
Criterion A
1kV
Criterion A
EN 61000-4-5
+
PE
1kV
Criterion A
+/EN 61000-4-5
DC-OK signal
PE
1kV
Criterion A
EN 61000-4-6
0.15-80MHz
10V
Criterion A
0Vac for 20ms
Criterion A
EN 61000-4-11
0% of 200Vac
40% of 200Vac
80Vac for 200ms
Criterion C
70% of 200Vac
140Vac for 500ms
Criterion A
EN 61000-4-11
0% of 200Vac (=0V)
5000ms
Criterion C
SEMI F47 0706
dips on the input voltage according to SEMI F47 standard
80% of 200Vac
160Vac for 1000ms
Criterion A
70% of 200Vac
140Vac for 500ms
Criterion A
50% of 200Vac
100Vac for 200ms
Criterion A
VDE 0160
over entire load range
750V, 1.3ms
Criterion A
Criteria:
A: Power supply shows normal operation behavior within the defined limits.
C: Temporary loss of function is possible. Power supply may shut down and restart by itself. This will cause no damage or hazard to the
power supply.
EMC Emission
Conducted emission
input lines
Conducted emission
output lines
According generic standards: EN 61000-6-3 and EN 61000-6-4
EN 55011, EN 55022, FCC Part 15, CISPR 11, CISPR 22
Class B
IEC/CISPR 16-1-2, IEC/CISPR 16-2-1
5dB higher than average limits
for DC power port according EN
61000-6-3***)
Class B
fulfilled for class A equipment
fulfilled**)
Radiated emission
EN 55011, EN 55022
Harmonic input current
EN 61000-3-2
Voltage fluctuations, flicker EN 61000-3-3
This device complies with FCC Part 15 rules.
Operation is subjected to 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 undesired operation.
**) Tested with constant current loads, non pulsing
***) Restrictions apply for applications in residential, commercial and light-industrial environments, where local DC power networks according
to EN 61000-6-3 are involved. No restrictions for all kinds of industrial applications.
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
15
Bulletin 1606 Switched Mode Power Supplies
Switching Frequencies
Switching frequency 1
Switching frequency 2
Switching frequency 3
Switching frequency 4
The power supply has four converters with four different switching frequencies included.
105kHz
Resonant converter, nearly constant
35kHz to 150kHz
PFC converter, input voltage and load dependent
10kHz to 300kHz
Boost converter, output voltage and load dependent
28kHz to 40kHz
Aux. converter, input voltage and load dependent
18. Environment
Operational temperature*)
Storage temperature
Output de-rating
Humidity**)
Vibration sinusoidal
Shock
Altitude
-25°C to +70°C (-13°F to 158°F)
-40 to +85°C (-40°F to 185°F)
24W/°C
5 to 95% r.H.
2-17.8Hz: ±1.6mm; 17.8-500Hz: 1g ***)
2 hours / axis
15g 6ms, 10g 11ms ***)
3 bumps / direction, 18 bumps in total
0 to 2000m (0 to 6 560ft)
2000 to 6000m (6 560 to 20 000ft)
reduce output power according Fig. 18-1
for storage and transportation
60-70°C (140°F to 158°F)
IEC 60068-2-30
IEC 60068-2-6
IEC 60068-2-27
no restrictions
reduce output power or ambient temperature,
see Fig. 18-2
IEC 62103, EN 50178, overvoltage category II
60W/1000m or 5°C/1000m
> 2000m (6500ft), see Fig. 18-2
III
IEC 62103, EN 50178, altitudes up to 2000m
II
altitudes from 2000m to 6000m
2
IEC 62103, EN 50178, not conductive
The unit does not release any silicone or other LABS-critical substances and is suitable for
use in paint shops.
Altitude de-rating
Over-voltage category
Degree of pollution
LABS compatibility
*)
Operational temperature is the same as the ambient or surrounding temperature and is defined as the air temperature 2cm below the
unit.
**) Do not energize in the presence of condensation.
***) Higher levels are allowed when using the 1606-XLC wall mounting bracket.
Fig. 18-1 Output current vs. ambient temp.
Allowed Output Current at 48V
Allowed Output Current at 48V
30A
30A
25
20
15
short-term (4s)
20
continuous
continuous
15
10
5
5
Ambient Temperature
0
short-term (4s)
25
10
0
-25
16
Fig. 18-2 Output current vs. altitude
20
40
A
A... Tamb < 60°C
B... Tamb < 50°C
C... Tamb < 40°C
0
2000
C
Altitude
0
60 70°C
B
4000
6000m
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
Bulletin 1606 Switched Mode Power Supplies
19. Protection Features
Output protection
Output over-voltage protection
Degree of protection
Penetration protection
Over-temperature protection
Input transient protection
Internal input fuse
*)
Electronically protected against overload, no-load and short-circuits*)
typ. 58.8Vdc
In case of an internal power supply defect, a redundant
max. 60Vdc
circuit limits the maximum output voltage. The output
shuts down and automatically attempts to restart.
IP 20
EN/IEC 60529
Caution: For use in a controlled environment according
to CSA 22.2 No 107.1-01.
> 5mm
e.g. screws, small parts
yes
Output shut down with automatic restart
MOV (Metal Oxide Varistor)
included
not user replaceable
In case of a protection event, audible noise may occur.
20. Safety Features
Input / output separation*)
Class of protection
Isolation resistance
PE resistance
Touch current (leakage current)
*)
SELV
IEC/EN 60950-1
PELV
IEC/EN 60204-1, EN 50178, IEC 62103, IEC 60364-4-41
double or reinforced insulation
I
PE (Protective Earth) connection required
> 5MOhm
input to output, 500Vdc
< 0.1Ohm
typ. 0.59mA / 1.38mA
230Vac, 50Hz, TN-,TT-mains / IT-mains
max. 0.75mA / 1.74mA
264Vac, 50Hz, TN-,TT-mains / IT-mains
double or reinforced insulation
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
17
Bulletin 1606 Switched Mode Power Supplies
21. Dielectric Strength
The output voltage is floating and has no ohmic connection to the ground. Type and factory tests are conducted by
the manufacturer. Field tests may be conducted in the field using the appropriate test equipment which applies the
voltage with a slow ramp (2s up and 2s down). Connect all input-terminals together as well as all output poles before
conducting the test. When testing, set the cut-off current settings to the value in the table below.
60s
A
2500Vac
B
3000Vac
C
500Vac
D
500Vac
Fig. 21-1 Dielectric strength
Type test
Input
Factory test
5s
2500Vac
2500Vac
500Vac
500Vac
13
Field test
5s
2000Vac
2000Vac
500Vac
500Vac
14
Cut-off current setting
> 20mA
> 20mA
> 40mA
> 1mA
DC-ok
B*)
L
N
B
A
D
Output
Earth, PE
C
+/-
Shut-down
15/16
To fulfil the PELV requirements according to EN60204-1 § 6.4.1, we
recommend that either the + pole, the – pole or any other part of
the output circuit shall be connected to the protective earth
system. This helps to avoid situations in which a load starts
unexpectedly or can not be switched off when unnoticed earth
faults occur.
B*) When testing input to DC-OK ensure that the max. voltage between DC-OK and the output is not exceeded (column D). We recommend
connecting DC-OK pins and the output pins together when performing the test.
22. Certifications
EN 60950-1, EN 61204-3
Complies with CE EMC and CE Low Voltage Directives
UL 508
LISTED E56639 listed for use in the U.S.A. (UL 508)
and Canada (C22.2 No. 14-95)
Industrial Control Equipment
RECOGNIZED E168663 recognized for use in the U.S.A.
(UL 60950-1) and Canada (C22.2 No. 60950)
Information Technology Equipment, Level 3
IND. CONT. EQ.
UL 60950-1
Marine
GL (Germanischer Lloyd) classified for marine and offshore
applications.
Environmental category: C, EMC2
See below for link to the Certificate.
Marine Rina
RINA (Registro Italio Navale) certified. See below for link
to the Certificate.
GOST R
GOST R certification is applicable for products intended for sale
and use within Russia. See below for link to the Certificate.
C-TICK
C-tick compliance is for products intended for sale and use
within he Australian market. See below for link to the C-tick
Declarations of Conformity.
Product certification information (including Certificates and Declarations of Conformity) can be found at www.ab.com/certification.
18
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
Bulletin 1606 Switched Mode Power Supplies
23. Physical Dimensions and Weight
Weight
DIN Rail
Installation Clearances
1800g / 3.97lb
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 unit depth (127mm) to calculate the total required
installation depth.
See section 2.
Fig. 23-1 Front view
Fig. 23-2 Side view
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
19
Bulletin 1606 Switched Mode Power Supplies
24. Accessories
24.1. 1606-XLC Wall Mounting Bracket
This bracket is used to mount specific power supplies onto a flat surface
without a DIN rail.
24.2. 1606-XLSBUFFER48 Buffer Module
This buffer unit is a supplementary device for DC 48V power supplies. It delivers power
to bridge typical mains failures or extends the
Power
Buffer
hold-up time after turn-off of the AC power.
Load
AC
Supply
Unit(s)
In times when the power supply provides
sufficient voltages, the buffer unit stores
+
DC
energy in integrated electrolytic capacitors.
In case of mains voltage fault, this energy is
released again through a regulated process.
The buffer unit does not require any control wiring. It can be added in parallel to the
load circuit at any given point. Buffer units can be added in parallel to increase the
output ampacity or the hold-up time.
20
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
Bulletin 1606 Switched Mode Power Supplies
25. Application Notes
25.1. Repetitive Pulse Loading
Typically, a load current is not constant and varies over time. This power supply is designed to support loads with a
higher short-term power demand (=BonusPower). The short-term duration is hardware-controlled by an output
power manager and is available on a repeated basis. If the BonusPower load lasts longer than the hardware
controller allows it, the output voltage will dip and the next BonusPower is available after the BonusPower recovery
time (see section 6) has elapsed.
To avoid this, the following rules must be met:
a) The power demand of the pulse must be below 150% of the nominal output power.
b) The duration of the pulse power must be shorter than the allowed BonusPower time. (see Output section)
c)
The average (R.M.S.) output current must be below the specified continuous output current.
If the R.M.S. current is higher, the unit will respond with a thermal shut down after a period of time. Use the
maximum duty cycle curve (Fig. 25-2) to check if the average output current is below the nominal current.
d) The duty cycle must be below 0.75.
Fig. 25-1 Repetitive pulse loads, definitions
Fig. 25-2 Max. duty cycle curve
P0 = 10%
P0 = 50%
P0 = 75%
Duty Cycle
PPEAK TPEAK
T0
0.75
max.
150%
0.6
100%
0.4
P0 = 100%
0.2
P0
PPEAK
0
100
P0
PPEAK
T0
TPEAK
Example:
Base load (W)
Pulse load (above 100%)
Duration between pulses (s)
Pulse duration (s)
110
DutyCycle =
T0 =
120
130
140
150%
Tpeak
Tpeak + T0
Tpeak - (DutyCycle x Tpeak)
DutyCycle
A load is powered continuously with 480W (= 50% of the rated output load). From time to time a peak
power of 1440W (= 150% of the rated output load) is needed for 1 second.
The question is: How often can this pulse be supplied without overloading the power supply?
- Make a vertical line at PPEAK = 150% and a horizontal line where the vertical line crosses the P0 = 50%
curve. Read the max. duty cycle from the duty cycle-axis (= 0.37)
- Calculate the required pause (base load) length T0:
- Result: The required pause length = 1.7s
T0=
- Max. repetition rate = pulse +pause length = 2.7s
Tpeak - (DutyCycle x Tpeak)
DutyCycle
=
1s - (0.37 x 1s)
0.37
= 1.7s
More examples for pulse load compatibility:
PPEAK
1440W
1440W
1200W
P0
960W
0W
480W
TPEAK
1s
1s
1s
T0
>25s
>1.3s
> 0.75s
PPEAK
1440W
1440W
1440W
P0
480W
480W
480W
TPEAK
0.1s
1s
3s
T0
>0.16s
>1.6s
>4.9s
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
21
Bulletin 1606 Switched Mode Power Supplies
25.2. Peak Current Capability
The power supply can deliver peak currents (up to several milliseconds) which are higher than the specified short term
currents.
This helps to start current demanding loads. Solenoids, contactors and pneumatic modules often have a steady state
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 (including BonusPower). The same situation applies when
starting a capacitive load.
The peak current capability also ensures the safe operation of subsequent circuit breakers of load circuits. The load
branches are often individually protected with circuit breakers or fuses. In case of a short or an overload in one branch
circuit, the fuse or circuit breaker need a certain amount of over-current to open in a timely manner. This avoids
voltage loss in adjacent circuits.
The extra (peak) current is supplied by the power converter and the built-in large sized output capacitors of the
power supply. The capacitors get discharged during such an event, which causes a voltage dip on the output.
Both the following examples show typical voltage dips:
Fig. 25-3 Peak load with 2x the nominal
current for 50ms, typ.
Fig. 25-4 Peak load with 5x the nominal
current for 5ms, typ.
40A Peak load (resistive) for 50ms
Output voltage dips from 48V to 44V.
100A Peak load (resistive) for 5ms
Output voltage dips from 48V to 33V.
Please note: The DC-OK relay triggers when the voltage dips more than 10% for longer than 1ms.
Peak current voltage dips
typ.
typ.
typ.
from 48V to 44V
from 48V to 38V
from 48V to 33V
at 40A for 50ms, resistive load
at 100A for 2ms, resistive load
at 100A for 5ms, resistive load
25.3. External Input Protection
The unit is tested and approved for branch circuits up to 30A (U.S.A.) and 32A (IEC). An external protection is only
required if the supplying branch has an ampacity greater than this. Check also local codes and local requirements. In
some countries local regulations might apply.
If an external fuse is necessary or utilized, minimum requirements need to be considered to avoid nuisance tripping of
the circuit breaker. A minimum value of 10A B- or 8A C-Characteristic breaker should be used.
22
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
Bulletin 1606 Switched Mode Power Supplies
25.4. Charging Batteries
This power supply is not recommended to charge lead-acid or maintenance free batteries. The recommended end-ofcharge voltage of 55.0V (at 20°C) for four 12V VRLA lead-acid batteries in series can not be supplied from the
1606-XLS960FE unit.
25.5. Output Circuit Breakers
Standard miniature circuit breakers (MCBs or UL1077 circuit breakers) are commonly used for AC supply systems and
may also be used on DC branches.
MCBs are designed to protect wires and circuits. If the ampere value and the characteristics of the MCB are adapted to
the wire size that is used, the wiring is considered as thermally safe regardless of whether the MCB opens or not.
To avoid voltage dips and under-voltage situations in adjacent 48V branches which are supplied by the same source, a
fast (magnetic) tripping of the MCB is desired. A quick shutdown within 10ms is necessary corresponding roughly to
the ride-through time of PLCs. This requires power supplies with high current reserves and large output capacitors.
Furthermore, the impedance of the faulty branch must be sufficiently small in order for the current to actually flow.
The best current reserve in the power supply does not help if Ohm’s law does not permit current flow. The following
table has typical test results showing which B- and C-Characteristic MCBs magnetically trip depending on the wire cross
section and wire length.
Fig. 25-5 Test circuit
Power Supply
AC
MCB
Load
+
+
Wire length
S1
-
DC S1... Fault simulation switch
Maximal wire length*) for a fast (magnetic) tripping:
0.75mm²
1.0mm²
1.5mm²
2.5mm²
74m
89m
146m
190m
C-2A
57m
79m
128m
163m
C-3A
43m
52m
73m
116m
C-4A
19m
25m
27m
57m
C-6A
8m
12m
17m
25m
C-8A
6m
9m
13m
19m
C-10A
3m
5m
7m
10m
C-13A
38m
52m
76m
113m
B-6A
18m
26m
38m
55m
B-10A
12m
19m
29m
42m
B-13A
6m
8m
12m
20m
B-16A
1m
2m
4m
5m
B-20A
*) Remember to take into account twice the distance to the load (or cable length) when calculating the total wire length (+ and – wire).
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
23
Bulletin 1606 Switched Mode Power Supplies
25.6. Parallel Use to Increase Output Power
Power supplies from the same series can be used in parallel to increase
the output power. The output voltage shall be adjusted to the same value
(±100mV) in “Single use” mode with the same load conditions on all units, or
the units can be left with the factory settings. After the adjustments, the
jumper on the front of the unit shall be moved from “Single use” to “Parallel
use”, in order to achieve load sharing. The “Parallel use” mode regulates the
output voltage in such a manner that the voltage at no load is approx. 4%
higher than at nominal load. See also section 6. If no jumper is plugged in, the
unit is in “Single use” mode. Factory setting is also “Single use” mode.
Unit A
AC
DC
+
+
Unit B
AC
DC
Load
+
-
-
If you connect more than three units in parallel, a fuse or circuit breaker with a rating of 30A or 32A is required on
each output. Alternatively, a diode or redundancy module can also be used.
Energize all units at the same time to avoid the overload HiccupPLUS mode. It also might be necessary to cycle the input
power (turn-off for at least five seconds), if the output was in HiccupPLUS mode due to overload or short circuits and the
required output current is higher than the current of one unit.
Keep an installation clearance of 15mm (left / right) between two power supplies and avoid installing the power
supplies on top of each other. Do not use power supplies in parallel in mounting orientations other than the standard
mounting orientation (terminals on the bottom of the unit) or in any other condition where a derating of the output
current is required (e.g. altitude, above 60°C, …).
Please note that leakage current, EMI, inrush current, harmonics will increase when using multiple power supplies.
25.7. Parallel Use for Redundancy
Power supplies can be paralleled for redundancy to gain higher system availability. Redundant systems require a
certain amount of extra power to support the load in case one power supply unit fails. The simplest way is to put two
power supplies in parallel. This is called a 1+1 redundancy. In case one power supply unit fails, the other one 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 20A are paralleled to build a 80A
redundant system. For N+1 redundancy the same restrictions apply as for increasing the output power, see also
section 25.6.
Please note: This simple way to build a redundant system does not cover failures such as an internal short circuit in
the secondary side of the power supply. In such a case, the defective unit becomes a load for the other power supplies
and the output voltage can no longer be maintained. You can avoid this by using redundancy modules including
decoupling devices (diodes or mosfets). Further information and wiring configurations can be found in section 24.3.
Recommendations for building redundant power systems:
a)
b)
c)
d)
24
Use separate input fuses for each power supply. A separate source for each supply when possible increases the
reliability of the redundant system.
Set the power supply into “Parallel Use” mode.
Monitor the individual power supply units. Therefore, use the DC-OK relay contact of the 1606-XLS power supply.
We recommend setting the output voltages of all units to the same value (± 100mV) or leaving it on the factory
setting.
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
Bulletin 1606 Switched Mode Power Supplies
25.8. Series Operation
Power supplies of the same type can be connected in series for higher
output voltages. It is possible to connect as many units in series as needed,
providing the sum of the output voltage does not exceed 150Vdc. Voltages
with a potential above 60Vdc are no longer SELV and may be dangerous.
Such voltages must be installed with a protection against touching.
Grounding of the output is required when the sum of the output voltage
exceeds 60Vdc.
Avoid return voltage (e.g. from a decelerating motor or battery) which is
applied to the output terminals.
Unit A
AC
DC
+
+
Unit B
AC
DC
Load
+
-
Earth
(see notes)
Keep an installation clearance of 15mm (left / right) between two power supplies and avoid installing the power
supplies on top of each other. Do not use power supplies in series in mounting orientations other than the standard
mounting orientation (terminals on the bottom of the unit).
Please note that leakage current, EMI, inrush current, harmonics will increase when using multiple power supplies.
25.9. Inductive and Capacitive Loads
The unit is designed to supply any kind of loads, including capacitive and inductive loads. If extreme large capacitors,
such as EDLCs (electric double layer capacitors or “UltraCaps”) with a capacitance > 1F are connected to the output,
the unit might charge the capacitor in the HiccupPLUS mode (see section 6).
25.10. Back-feeding Loads
Loads such as decelerating motors and inductors can feed voltage back to the power supply. This feature is also called
return voltage immunity or resistance against Back- E.M.F. (Electro Magnetic Force).
This power supply is resistant and does not show malfunctioning when a load feeds back voltage to the power supply.
It does not matter whether the power supply is on or off.
The maximum allowed feed-back-voltage is 63Vdc. The absorbing energy can be calculated according to the built-in
large sized output capacitor which is specified in section 6.
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
25
Bulletin 1606 Switched Mode Power Supplies
25.11. Operation on Two Phases
AC
240V +10% max.
The power supply can also be used on two-phases of a three-phase-system.
Such a phase to phase connection is allowed as long as the supplying voltage
is below 240V+10%.
Power Supply
L1
L3
L2
L
internal
fuse
N
PE
DC
25.12. Use in a Tightly Sealed Enclosure
When the power supply is installed in a tightly sealed enclosure, the temperature inside the enclosure will be higher
than outside. In such situations, the inside temperature defines the ambient temperature for the power supply.
The following measurement results can be used as a reference to estimate the temperature rise inside the enclosure.
The power supply is placed in the middle of the box; no other heat producing item is inside the box.
Enclosure:
Load:
Input:
Temperature inside enclosure:
Temperature outside enclosure:
Temperature rise:
26
Rittal Typ IP66 Box PK 9522 100, plastic, 254x180x165mm
48V, 16A; (=80%) load is placed outside the box.
230Vac
60.1°C (in the middle of the right side of the power supply with a distance of 2cm)
23.1°C
37K
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
Bulletin 1606 Switched Mode Power Supplies
25.13. Mounting Orientations
Mounting orientations other than all terminals on the bottom require a reduction in continuous output power or a
limitation in the maximum allowed ambient temperature. The amount of reduction influences the lifetime expectancy
of the power supply. Therefore, two different derating curves for continuous operation can be found below:
Curve A1
Curve A2
Recommended output current.
Max allowed output current (results in approximately half the lifetime expectancy of A1).
Fig. 25-6
Mounting
Orientation A
(Standard
orientation)
Output Current
20A
A1
15
Power
Supply
10
5
Ambient Temperature
0
INPUT OUTPUT
10
Fig. 25-7
Mounting
Orientation B
(Upside down)
20
30
50
40
60°C
Output Current
20A
15
A2
10
A1
INPUT OUTPUT
Power
Supply
5
Ambient Temperature
0
10
Fig. 25-8
Mounting
Orientation C
(Table-top
mounting)
20
30
50
40
60°C
Output Current
20A
15
A2
A1
10
5
Ambient Temperature
0
10
40
50
60°C
20A
Power
Supply
15
A2
A1
10
5
Ambient Temperature
0
10
20
30
40
50
60°C
Output Current
INPUT OUTPUT
20A
Power
Supply
Fig. 25-10
Mounting
Orientation E
(Horizontal ccw)
30
Output Current
INPUT OUTPUT
Fig. 25-9
Mounting
Orientation D
(Horizontal cw)
20
15
A2
A1
10
5
Ambient Temperature
0
10
20
30
40
50
60°C
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM018A-EN-P — February 2014
27
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representative, or visit http://www.rockwellautomation.com/support/.
Installation Assistance
If you experience a problem within the first 24 hours of installation, review the information that is contained in
this manual. You can contact Customer Support for initial help in getting your product up and running.
United States or Canada
1.440.646.3434
Outside United States or Canada
Use the Worldwide Locator at http://www.rockwellautomation.com/rockwellautomation/support/overview.page, or contact your local
Rockwell Automation representative.
New Product Satisfaction Return
Rockwell Automation tests all of its products to help ensure that they are fully operational when shipped from
the manufacturing facility. However, if your product is not functioning and needs to be returned, follow these
procedures.
United States
Contact your distributor. You must provide a Customer Support case number (call the phone number above to obtain one) to your
distributor to complete the return process.
Outside United States
Please contact your local Rockwell Automation representative for the return procedure.
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Publication 1606-RM018A-EN-P — February 2014
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