Puls Dimension Y Series User manual

YRM2.DIODE
Y-Series 24-60V, 20A, DUAL REDUNDANCY MODULE
Nov 2006 / Rev. 1.0 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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REDUNDANCY MODULE
■Dual input, single output
■Alarm relay-contacts for each input path
■Rugged metal housing
■Width only 32mm
■Cost effective solution to build redundant systems
■24-60V Wide-range input
■20A Continuous output current
■Easy wiring;
Distribution terminals for negative pole included
■Large screw terminals
■3 Year warranty
1. GENERAL DESCRIPTION 2. SHORT-FORM DATA
Input voltage DC 24V
Input voltage range 24-60Vdc
Input current 2x 12.5A 1+1 Redundancy
2x 10A N+1 Redundancy
1x 20A Single use
Output current max. 20A Normal mode
max. 25A Overload / short-
circuit
Input to output
voltage drop
typ. 0.85V At 20A output
current
Alarm threshold typ. 21.5V LED and relay
contact for each
input
Power losses 1 W At no load
18W At 20A output
current
Temperature range -25°C to +70°C Operational
Derating 0.5A/°C +60 to +70°C
The YRM2.DIODE is a redundancy module, which can
be used for various purposes. The most popular
application is to configure a highly reliable and true
redundant power supply systems. This redundancy
module has a monitoring circuitry included. Two
LEDs and two relay contacts signal when one of the
two DC-input voltages is not in range due to a non-
functioning or disconnected power supply.
Another interesting application is the separation of
sensitive loads from non-sensitive loads. This avoids
the distortion of the power quality for the sensitive
loads which can cause controller failures.
Alongside with the YRM2.DIODE, there exists the
decoupling module YR2.DIODE which has no
monitoring circuitry included. This is the perfect fit
when the power supply itself is already equipped
with a DC-OK signal (e.g.: DIMENSION Q-Series).
Dimensions 32x124x117mm WxHxD
3. ORDER NUMBERS 4. MARKINGS
Redundancy
Module
YRM2.DIODE Dual input / single
output
IND. CONT. EQ.
18WM
LISTED
UL 508, pending
UL 60950-1,
pending
EMC, LVD
ZM1.WALL Wall / panel mount
bracket
Accessory
ZM11.SIDE Side mount bracket
GL
Marine, pending

YRM2.DIODE
Y-Series 24-60V, 20A, DUAL REDUNDANCY MODULE
Nov 2006 / Rev. 1.0 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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INDEX PAGE INDEX PAGE
1. General Description ............................................1
2. Short-form Data ..................................................1
3. Order Numbers....................................................1
4. Markings..............................................................1
5. Input and Output Characteristics .......................3
6. Power Losses........................................................4
7. Alarm Contacts ....................................................4
8. Functional Diagram.............................................5
9. Front Side and User Elements.............................5
10. Terminals and Wiring..........................................6
11. Reliability.............................................................6
12. EMC......................................................................7
13. Environment........................................................8
14. Protection Features .............................................9
15. Safety ...................................................................9
16. Dielectric Strength ..............................................9
17. Approvals.......................................................... 10
18. Fulfilled Standards............................................ 10
19. Used Substances ............................................... 10
20. Physical Dimensions and Weight ..................... 11
21. Installation and Operation Instructions .......... 11
22. Accessory........................................................... 12
23. Application Notes............................................. 13
23.1. Recommendations for Redundancy ...... 13
23.2. 1+1 Redundancy up to 10A ................... 13
23.3. 1+1 Redundancy up to 20A ................... 14
23.4. N+1 Redundancy, Example with 20A .... 14
23.5. Battery Back-up ...................................... 15
23.6. Redundancy for Sensitive Loads ............ 15
23.7. Decoupling of Buffered Branches ......... 16
23.8. Use in a Tightly Sealed Enclosure .......... 16
23.9. Mounting Orientations.......................... 17
INTENDED USE
The redundancy module shall only be installed and put into operation by qualified personnel.
This redundancy module is designed for installation in an enclosure and is intended for the general use, such as in
industrial control, office, communication, and instrumentation equipment. Do not use this device in aircraft, trains
and nuclear equipment, where malfunctioning of the power supply may cause severe personal injury or threaten
human life.
TERMINOLOGY AND ABREVIATIONS
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.
DC 24V A figure displayed with the AC or DC before the value represents a nominal voltage with
standard tolerances (usually ±20%) included.
E.g.: DC 12V describes a 12V battery disregarding whether it is full (13.7V) or flat (10V)
24Vac A figure with the unit (Vac) at the end is a momentary figure without any additional
tolerances included.
DISCLAIMER
The information presented in this document is believed to be accurate and reliable and may change without notice.

YRM2.DIODE
Y-Series 24-60V, 20A, DUAL REDUNDANCY MODULE
Nov 2006 / Rev. 1.0 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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3/17
5. INPUT AND OUTPUT CHARACTERISTICS
Number of inputs nom. 2
Number of outputs nom. 1
Input voltage nom. DC 24V
Input voltage range - 22-60Vdc
Voltage drop, input to output typ. 0.85V At 2x10A, see Fig. 5-1
Input current max. 2x 12.5A Continuous, 1+1 Redundancy, see Fig. 5-2
max. 2x 10A Continuous, N+1 Redundancy, see Fig. 5-3
max. 1x 20A Continuous, Single use, see Fig. 5-4
Input current max. 2x 18.5A Up to 5s, 1+1 Redundancy, continuous, see Fig. 5-2
max. 2x 15A Up to 5s, N+1 Redundancy, continuous, see Fig. 5-3
max. 1x 30A Up to 5s, Single use, continuous, see Fig. 5-4
Peak input current max. 150A Max. 10ms, per input
Output current max. 20A / 30A Normal mode, continuous / up to 5s
max. 25A / 37.5A At overload or short-circuit, continuous / up to 5s
Reverse current max. 2mA Per input, -25°C to +60°C
Reverse voltage max. 200Vdc Voltage applied to the output, continuously allowed
Note: Ensure that the continuous output current does not exceed 25A. Check the short-circuit current of the power
sources and if the power source can deliver more than 25A, use an appropriate fuse on the output.
Fig. 5-1 Voltage Drop Fig. 5-2 1+1 Redundancy
Input to Output Voltage Drop, typ.
0
0 5 10 20
0.2
0.4
0.6
0.8
1.0
1.2V
25
A
15
Output Current
AC
DC
AC
DC
Load
+
-
IN 1
OUT
IN 2
Fig. 5-3 N+1 Redundancy Fig. 5-4 Single use (redundant)
AC
DC
AC
DC
AC
DC
AC
DC
AC
DC
AC
DC
IN 1
OUT
IN 2 IN 1
OUT
IN 2 IN 1
OUT
IN 2
Load
+
-
Load
+
-
IN 1
OUT
IN 2
AC
DC
AC
DC
IN 1
OUT
IN 2

YRM2.DIODE
Y-Series 24-60V, 20A, DUAL REDUNDANCY MODULE
Nov 2006 / Rev. 1.0 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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4/17
6. POWER LOSSES
Power losses typ. 1.0W 10-60Vdc, 0A output current, see Fig. 6-1
4.6W 10-60Vdc, 5A output current, see Fig. 6-1
typ. 8.85W 10-60Vdc, 10A output current, see Fig. 6-1
typ. 18.0W 10-60Vdc, 20A output current, see Fig. 6-1
Fig. 6-1 Power losses vs. output current
Power Losses, typ.
0
0 5 10 20
4
8
12
16
20
24W
25
A
15
Output Current
7. ALARM CONTACTS
Both input voltages are monitored individually. If one input voltage is too low or completely lost, it will be indicated
by an alarm relay contact.
Each input has his own monitoring circuitry and relay contact.
Alarm threshold nom. 21.5V (±0.5V) Relay contact opens immediately after the
input voltage falls below this value.
Contact ratings max 60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A Resistive load
min 1mA at 5Vdc Min. permissible load
Isolation voltage See dielectric strength table in section 16

YRM2.DIODE
Y-Series 24-60V, 20A, DUAL REDUNDANCY MODULE
Nov 2006 / Rev. 1.0 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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5/17
8. FUNCTIONAL DIAGRAM
Fig. 8-1 Functional diagram
+
-
Chassis
Ground
V
OUT
+
-
+
-
V
IN
1
V
IN
2
Alarm
Relay
Input
Voltage
Monitor
Input 1
Alarm
contact
Alarm
Relay
Input
Voltage
Monitor
Input 2
Alarm
contact
Input 1
ok
Input 2
ok
9. FRONT SIDE AND USER ELEMENTS
Fig. 9-1 Front side
Alarm-contacts (relays)
plug connector
(NO-contact)
11, 12 Alarm-contact for input 1
13, 14 Alarm-contact for input 2
Input Terminals
Screw terminals
+Positive input
- Negative (return) input
DC-ok lamp (green)
The LEDs report a correct input voltage.
Fixed threshold: 21.5Vdc
The LED is ON if the corresponding input
voltage is above the threshold level.
The Input-ok LEDs and the alarm-contacts
function synchronized.
Output Terminals
N… Neutral input
L… Line (hot) input
... PE (Protective Earth) input
See chapter 10 “Terminals and Wiring” to
choose appropriate wire gauges

YRM2.DIODE
Y-Series 24-60V, 20A, DUAL REDUNDANCY MODULE
Nov 2006 / Rev. 1.0 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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6/17
10. TERMINALS AND WIRING
Type Screw terminals, Alarm-signal terminals are pluggable
IP20 Finger safe construction. Suitable for field- and factory installation.
Ferrules allowed, but not required
Input and output terminals Alarm-signal terminals
Solid wire 0.5-6mm20.2-1.5mm2
Stranded wire 0.5-4mm20.2-1.5mm2
American wire gauge 20-10 AWG 22-14 AWG
Wire stripping length 10mm / 0.4inch 6mm / 0.25inch
Recommended tightening torque 0.8Nm / 7lb.in 0.4Nm / 3.5lb.in
Instructions for wiring:
a) Use appropriate copper cables that are designed for an operating temperature of:
60°C for ambient up to 45°C and
75°C for ambient up to 60°C minimum.
b) Follow national installation codes and installation regulations!
c) Ensure that all strands of a stranded wire enter the terminal connection!
d) Up to two stranded wires with the same cross section are permitted in one connection point (except PE wire).
e) Do not use the unit without PE connection.
11. RELIABILITY
DC 24V
Lifetime expectancy min. > 25 years 40°C, input: 2x10A, output: 20A, no electrolytic capacitors involved
min. > 25 years 40°C, input: 2x5A, output: 10A, no electrolytic capacitors involved
min. > 25 years 25°C, input: 2x10A, output: 20A, no electrolytic capacitors involved
MTBF SN 29500, IEC 61709 T.B.D. 40°C, input: 2x10A, output: 20A
T.B.D. 25°C, input: 2x10A, output: 20A
MTBF MIL HDBK 217F T.B.D. 40°C, input: 2x10A, output: 20A, Ground Benign GB40
T.B.D. 25°C, input: 2x10A, output: 20A, 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 specified in operational hours. Lifetime expectancy is calculated according to the capacitor’s
manufacturer specification. The prediction model allows a calculation of up to 15 years from date of shipment.
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 the unit to fail and does not necessarily
represent the life of a product.

YRM2.DIODE
Y-Series 24-60V, 20A, DUAL REDUNDANCY MODULE
Nov 2006 / Rev. 1.0 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
7/17
12. EMC
The redundancy module is suitable for applications in industrial environment as well as in residential, commercial and
light industry environment without any restrictions. CE mark is in conformance with EMC guideline 89/336/EEC and
93/68/EEC and the low-voltage directive (LVD) 73/23/EWG. A detailed EMC Report is available upon request
EMC Immunity EN 61000-6-1 EN 61000-6-2 Generic standards
Electrostatic discharge EN 61000-4-2 Contact discharge
Air discharge
8kV
15kV
Criterion A
Criterion A
Electromagnetic RF field EN 61000-4-3 80MHz-1GHz 10V/m Criterion A
Fast transients (Burst) EN 61000-4-4 Input
Output
Alarm contacts
2kV
2kV
2kV
Criterion A
Criterion A
Criterion A
Conducted disturbance EN 61000-4-6 0.15-80MHz 10V Criterion A
Criterions:
A: Device shows normal operation behavior within the defined limits.
EMC Emission EN 61000-6-3 and EN 61000-6-4 Generic standards
Conducted emission EN 55011, EN 55022, FCC Part 15, CISPR 11, CISPR 22 Class B, input lines
EN 55022 Class B, output lines
Radiated emission EN 55011, EN 55022 Class B
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.

YRM2.DIODE
Y-Series 24-60V, 20A, DUAL REDUNDANCY MODULE
Nov 2006 / Rev. 1.0 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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8/17
13. ENVIRONMENT
Operational temperature -25°C to +70°C (-13°F to 158°F) Reduce output power above +60°C
Output de-rating 0.5A/°C 60-70°C (140°F to 158°F), see Fig. 13-1
Storage temperature -40°C to +85°C (-40°F to 185°F) Storage and transportation
Humidity 5 to 95% r.H. IEC 60068-2-30
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
Vibration random 0.5m2(s3)
2 hours / axis
IEC 60068-2-64
Shock 30g 6ms, 20g 11ms
3 bumps / direction,
18 bumps in total
IEC 60068-2-27
Altitude 0 to 6000m (0 to 20 000ft) Reduce output power or ambient temperature
above 2000m sea level.
Output de-rating (for altitude) 1.25A/1000m or 5°C/1000m Above 2000m (6500ft), see Fig. 13-2
Over-voltage category III EN 50178,
(for clearance and creepage distances)
Degree of pollution 2 EN 50178, not conductive
Fig. 13-1 Output current vs. ambient temp., Fig. 13-2 Output current vs. altitude
Allowed Output Current
0
-25 0 20 40 70°
C
5
10
15
20
25
30A
normalmode
60
Ambient Temperature
overload/shortcircuit
Allowed Output Current
0
0 2000 4000 6000m
5
10
15
20
25
30A
normalmode
Altitude
overload/shortcircuit
A...Tamb<60°C
B...Tamb<50°C
C...Tamb<40°C
ABC
The ambient temperature is defined as the air temperature 2cm below the unit.

YRM2.DIODE
Y-Series 24-60V, 20A, DUAL REDUNDANCY MODULE
Nov 2006 / Rev. 1.0 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
9/17
14. PROTECTION FEATURES
Output over-current protection not included
Degree of protection IP 20 EN/IEC 60529
Penetration protection > 3.5mm E.g. screws, small parts
Over-temperature protection no
Input transient protection no
Internal input fuse not included
Note: In case of a protection event, audible noise may occur.
15. SAFETY
Input / output separation 200V Epitaxial diode
Class of protection III PE (Protective Earth) connection not mandatory
PE resistance < 0.1Ohm Between housing and PE terminal
16. DIELECTRIC STRENGTH
Fig. 16-1 Dielectric strength
A B
Type test 60s 500Vac 500Vac
Factory test 5s 500Vac 500Vac
Field test 5s 500Vac 500Vac
B
A
DC-ok
ChassisIn- / Output
-
+
B
Type tests and factory tests:
Conducted by the manufacturer. Do not repeat test in field!
Rules for field test:
Use appropriate test equipment which applies the voltage
with a slow ramp!
During testing, connect all output and input poles together.
The input and output voltage is floating and has no ohmic connection to ground.

YRM2.DIODE
Y-Series 24-60V, 20A, DUAL REDUNDANCY MODULE
Nov 2006 / Rev. 1.0 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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10/17
17. APPROVALS
UL 508
pending
IND. CONT. EQ.
18WM
LISTED
LISTED E198865 listed for use in U.S.A.
UL 508 Industrial Control Equipment
UL 60950-1
pending
RECOGNIZED E137006 recognized for the use in U.S.A. (UL 60950-
1) and Canada (C22.2 No. 60950)
Information Technology Equipment
Marine
pending
GL
ABS
GL (Germanischer Lloyd) classified and ABS (American Bureau for
Shipping) PDA for marine and offshore applications.
Environmental category: C, EMC2
18. FULFILLED STANDARDS
EN/IEC 60204-1 Safety of Electrical Equipment of Machines
EN/IEC 61131-2 Programmable Controllers
EN 50178 Electronic Equipment in Power Installations
19. USED SUBSTANCES
The unit does not release any silicone and is suitable for the use in paint shops.
Electrolytic capacitors included in this unit do not use electrolytes such as Quaternary Ammonium Salt Systems.
Plastic housings and other molded plastic materials are free of halogens, wires and cables are not PVC insulated.
The production material within our production does not include following toxic chemicals:
Polychlorized Biphenyl (PCB), Polychlorized Terphenyl (PCT), Pentachlorophenol (PCP), Polychlorinated naphthalene
(PCN), Polybrom Biphenyll (PBB), Polybrom Bipheny-oxyd (PBO), Polybrominated Diphenylether (PBDE), Polychlorinated
Diphenylether (PCDE), Polydibromphenyl Oxyd (PBDO), Cadmium, Asbest, Mercury, Silicia

YRM2.DIODE
Y-Series 24-60V, 20A, DUAL REDUNDANCY MODULE
Nov 2006 / Rev. 1.0 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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11/17
20. PHYSICAL DIMENSIONS AND WEIGHT
Weight 350g / 0.77lb
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 depth (117mm) to calculate the total required installation depth.
Electronic files with mechanical data can be downloaded at www.pulspower.com
Fig. 20-1 Front view Fig. 20-2 Side view
21. INSTALLATION AND OPERATION INSTRUCTIONS
Mounting Orientation:
Input terminal must be located on top and output terminal on the bottom. For other orientations see section 0
Cooling:
Convection cooled, no forced cooling required. Do not cover ventilation grid (e.g. cable conduits) by more than 30%!
Installation clearances:
40mm on top, 20mm on the bottom, 5mm on the left and right side are recommended when loaded permanently
with full power. In case the adjacent device is a heat source, 15mm clearance is recommended.
Risk of electrical shock, fire, personal injury or death!
Turn power off before working on the module. 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 can be expected.
Service parts:
The unit does not contain any serviceable parts.

YRM2.DIODE
Y-Series 24-60V, 20A, DUAL REDUNDANCY MODULE
Nov 2006 / Rev. 1.0 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
12/17
22. ACCESSORY
ZM1.WALL Wall mounting bracket
This bracket is used to mount Dimension units onto a flat surface without utilizing a DIN-Rail. The two aluminum
brackets and the black plastic slider of the unit have to be detached, so that the two steel brackets can be mounted.
Fig. 22-1 ZM1.WALL Wall Mounting Bracket Fig. 22-2 Assembled Wall Mounting Bracket
ZM11.SIDE Side mounting bracket
This bracket is used to mount Dimension units sideways with or without utilizing a DIN-Rail. The two aluminum
brackets and the black plastic slider of the unit have to be detached, so that the steel brackets can be mounted.
For sideways DIN-rail mounting, the removed aluminum brackets and the black plastic slider need to be mounted on
the steel bracket.
Fig. 22-3 ZM11.SIDE Side Mounting Bracket
(Picture shows a mounted QS10 power supply) Fig. 22-4 Side Mounting with DIN-rail brackets
(Picture shows a mounted QS10 power supply)

YRM2.DIODE
Y-Series 24-60V, 20A, DUAL REDUNDANCY MODULE
Nov 2006 / Rev. 1.0 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
13/17
23. APPLICATION NOTES
23.1. RECOMMENDATIONS FOR REDUNDANCY
Recommendations for the configuration of redundant power systems:
• Use separate input fuse for each power supply.
• Use Three-phase power supplies to gain functional safety if one phase fails.
• When Single-phase power supplies are utilized connect them to different phases or mains circuits.
• Use both inputs in parallel for currents above 10A.
23.2. 1+1 REDUNDANCY UP TO 10A
1+1 Redundancy up to 10A requires two 10A power supplies and one YRM2.DIODE redundancy module.
Fig. 23-1 Wiring diagram, 1+1 Redundancy, 10A output current
Failure
Monitor
10A
Load
optional
I I
L
N
PE
L N PE
+ + - -
Power Supply
24V, 10A
YRM2.DIODE
+ -
OUT
+ -
IN 1
+ -
IN 2 IN 1 IN 2
L N PE
Power Supply
+ + - -
24V, 10A

YRM2.DIODE
Y-Series 24-60V, 20A, DUAL REDUNDANCY MODULE
Nov 2006 / Rev. 1.0 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
14/17
23.3. 1+1 REDUNDANCY UP TO 20A
1+1 Redundancy up to 20A requires two 20A power supplies and two YRM2.DIODE redundancy modules.
Fig. 23-2 Wiring diagram, 1+1 Redundancy, 20A output current
L1 L2 L3 PE
Power Supply
+ + - -
24V, 20A
Failure
Monitor
20A
Load
I I I
optional
optional
I I I
L1
L2
PE
L3
YRM2.DIODE
+ -
OUT
+ -
IN 1
+ -
IN 2 IN 1 IN 2
YRM2.DIODE
+ -
OUT
+ -
IN 1
+ -
IN 2 IN 1 IN 2
L1 L2 L3 PE
Power Supply
+ + - -
24V, 20A
23.4. N+1 REDUNDANCY, EXAMPLE WITH 20A
N+1 Redundancy with 20A requires three 10A power supplies and two YRM2.DIODE redundancy modules.
Fig. 23-3 Wiring diagram, N+1 Redundancy, example with 20A load current
Failure
Monitor
20A
Load
optional
I I
L
N
PE
I
L N PE
Power Supply
+ + - -
24V, 10A
L N PE
Power Supply
+ + - -
24V, 10A
L N PE
Power Supply
+ + - -
24V, 10A
YRM2.DIODE
+ -
OUT
+ -
IN 1
+ -
IN 2 IN 1 IN 2
YRM2.DIODE
+ -
OUT
+ -
IN 1
+ -
IN 2 IN 1 IN 2

YRM2.DIODE
Y-Series 24-60V, 20A, DUAL REDUNDANCY MODULE
Nov 2006 / Rev. 1.0 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
15/17
23.5. BATTERY BACK-UP
A battery back-up with 10A requires one 10A power supply and one YRM2.DIODE redundancy module.
Please note:
Set output voltage of power supply to 26.5Vdc minimum to avoid that the charger current flows to the load instead of
charging the battery. Use a fuse between battery and YRM2.DIODE!
Fig. 23-4 Wiring diagram, 10A Battery back-up
Failure
Monitor
10A
Load
optional
L
N
PE
24V Battery
I
Battery
Charger
+
-
L N PE
Power Supply
+ + - -
24V, 10A
YRM2.DIODE
+ -
OUT
+ -
IN 1
+ -
IN 2 IN 1 IN 2
23.6. REDUNDANCY FOR SENSITIVE LOADS
Cost effective solution to get redundant power for a PLC or controller system.
Standard
design:
LoadPS1
PLC
PS2
Improved
approach:
Load
PLC
PS1
PS2 YR2
Fig. 23-5 Wiring diagram, Redundancy for Sensitive Loads
Failure
Monitor
Sensitive
Load
e.g.
Controller
optional
I I I
L1
L2
PE
L3
I
N
Heavy
Loads
e.g. Motors
L1 L2 L3 PE
Power Supply
+ + - -
24V, 20A
YRM2.DIODE
+ -
OUT
+ -
IN 1
+ -
IN 2 IN 1 IN 2
L N PE
Power
Supply
+ + - -
24V, 5A

YRM2.DIODE
Y-Series 24-60V, 20A, DUAL REDUNDANCY MODULE
Nov 2006 / Rev. 1.0 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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23.7. DECOUPLING OF BUFFERED BRANCHES
Buffer energy supplied from a DC-UPS or buffer module is not wasted in “power branches”.
Please note:
Set output voltage of the power supply to a level that the buffer unit or DC-UPS will not start unexpected. Take the
voltage drop of the YRM2.DIODE into account.
Fig. 23-6 Wiring diagram, Decoupling of Buffered Branches
Failure
Monitor
Buffered
Load
e.g.
Controller
optional
I I I
L1
L2
PE
L3
Load
e.g. Motor
L1 L2 L3 PE
Power Supply
+ + - -
24V, 20A
Buffer
Module
+ -
YRM2.DIODE
+ -
OUT
+ -
IN 1
+ -
IN 2 IN 1 IN 2
23.8. USE IN A TIGHTLY SEALED ENCLOSURE
When the redundancy module is installed in a tightly sealed enclosure, the temperature inside the enclosure will be
higher than outside. The inside temperature defines the ambient temperature for the redundancy module.
Results from such an installation:
Power supply is placed in the middle of the box, no other heat producer inside the box
Enclosure: Rittal Typ IP66 Box PK 9516 100, plastic, 110x180x165mm
Load: 24V, 16A; (=80%) load is placed outside the box
Input: 24Vdc
Temperature inside enclosure: 58.8°C (in the middle of the right side of the power supply with a distance of 2cm)
Temperature outside enclosure: 24.6°C
Temperature rise: 34.2K

YRM2.DIODE
Y-Series 24-60V, 20A, DUAL REDUNDANCY MODULE
Nov 2006 / Rev. 1.0 DS-YRM2.DIODE-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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17/17
Mounting Orientations
Mounting orientations other than vertical require a reduction in continuous output current or a limitation in the
max. 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 Recommended output current.
Curve A2 Max allowed output current (results approx. in half the lifetime expectancy of A1).
Fig. 23-7
Mounting
Orientation A
Standard
Orientation
Redundancy
Module
INPUT
OUTPUT
Output Current
0
10 20 30 40 60°
C
4
12
16
20A
50
A1
8
Ambient Temperature
Fig. 23-8
Mounting
Orientation B
(Upside down)
Redundancy
Module
INPUT
OUTPUT
Output Current
0
10 20 30 40 60°
C
4
12
16
20A
50
A1
8
Ambient Temperature
Fig. 23-9
Mounting
Orientation C
(Table-top
mounting)
Output Current
0
10 20 30 40 60°
C
4
12
16
20A
50
8
A1
A2
Ambient Temperature
Fig. 23-10
Mounting
Orientation D
(Horizontal cw)
Redundancy
Module
INPUT
OUTPUT
Output Current
0
10 20 30 40 60°
C
4
12
16
20A
50
8
A1
A2
Ambient Temperature
Fig. 23-11
Mounting
Orientation E
(Horizontal ccw)
Redundancy
Module
INPUT
OUTPUT
Output Current
0
10 20 30 40 60°
C
4
12
16
20A
50
8
A1
A2
Ambient Temperature