UF20.241 Datasheet by PULS, LP

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PULS DIMENSION B M E G D |s T- D o N |M GQDwgsasm's cw": C €
UF20.241
UF
-Series 24V, 20A, 200MS, BUFFER MODULE
Oct. 2016 / Rev. 2.0 DS-UF20.241-EN
All parameters are specified at 24V, 20A, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
1/18
B
UFFER
M
ODULE
Buffering with electrolytic capacitors instead of lead
acid batteries
Buffering of 24V loads
Minimum hold-up time 0.2s at 20A, longer hold-up time
at lower loads
Clear status indication by status LED and signaling
terminals
Quick-connect spring-clamp terminals
3 Years warranty
G
ENERAL
D
ESCRIPTION
The UF20 buffer module is a supplementary device for
regulated DC 24V power supplies, which can be used for
various purposes:
- Deliver DC-power to bridge failures of the DC
voltage supply system.
- Extend the hold-up time after loss of the AC power.
- Deliver extra short-term peak current above the
current rating of the power supply.
It utilizes service-free electrolytic capacitors for storing
the energy which allows usage even at ambient
temperatures up to +70°C.
The buffer module does not require any control wiring.
It can be added in parallel to the load circuit at any
given point.
Buffer modules can be connected in parallel to increase
the output ampacity or the hold-up time.
S
HORT
-
FORM
D
ATA
Supply
voltage DC 24V -20%/+25%
-30Vdc
Required voltage to
charge capacitors
23Vdc
Threshold voltage
for buffer mode
22.5V / V
IN
-1V
Buffer voltage
22.5V / V
IN
-1V
Buffer current
20A
Charging time
Typ. 18s
Current consumption
Typ. 80mA
Max. 600mA
uring charging
Power dissipation
1.9W
Buffer time
Min. 200ms
Min. 430ms
Typ. 310ms
Typ. 670ms
Typ. 43s
t 22.5V, 10A
t 22.5V, 20A
t 22.5V, 10A
t 22.5V, 0.1A
Temperature ra
nge -25°C to +70°C
perational
Dimensions
64x124x102mm
D
Weight
740g / 1.63lb
O
RDER
N
UMBERS
Buffer Module UF20.241
Accessory ZM1.WALL Panel/ wall-mount bracket
ZM14.SIDE Side-mount bracket
M
ARKINGS
IND. CONT. EQ.
UL 508
UL 60950-1
EMC
PULS I DIMENSION
UF20.241
UF
-Series 24V, 20A, 200MS, BUFFER MODULE
Oct. 2016 / Rev. 2.0 DS-UF20.241-EN
All parameters are specified at 24V, 20A, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
2/18
I
NDEX
Page Page
1. Intended Use .......................................................3
2. Installation Notes ................................................3
3. Functional Description ........................................4
4. Electrical Ratings .................................................5
5. Selection of the Back-up Threshold Voltage .....6
6. Buffer Time ..........................................................6
7. Charging Time .....................................................7
8. Operating Diagrams ............................................7
9. Active Signal ........................................................8
10. Ready Signal ........................................................8
11. Inhibit Input.........................................................8
12. Efficiency and Power Losses................................9
13. Lifetime Expectancy and MTBF ...........................9
14. Functional Diagram ........................................... 10
15. Terminals and Wiring ....................................... 10
16. Front Side and User Elements .......................... 11
17. EMC ................................................................... 12
18. Environment ..................................................... 13
19. Protection Features .......................................... 13
20. Safety Features ................................................. 13
21. Dielectric Strength ............................................ 14
22. Approvals .......................................................... 14
23. Physical Dimensions and Weight ..................... 15
24. Accessories ........................................................ 16
24.1. ZM1.WALL - Wall mounting bracket ....... 16
24.2. ZM14.SIDE - Side Mounting Bracket ........ 17
25. Wiring Diagrams ............................................... 18
The information given in this document is correct to the best of our knowledge and experience at the time of publication. If not
expressly agreed otherwise, this information does not represent a warranty in the legal sense of the word. As the state of our
knowledge and experience is constantly changing, the information in this data sheet is subject to revision. We therefore kindly ask
you to always use the latest issue of this document (available under www.pulspower.com). No part of this document may be
reproduced or utilized in any form without our prior permission in writing.
Some parts of this unit are patent by PULS (US patent No 091662,063, Des. 424,529, …).
T
ERMINOLOGY AND
A
BREVIATIONS
Power supply mode Describes a condition where the supply voltage is in the rated supply voltage range and the
supplying power supply can deliver a sufficient amount of current for the buffer module and
the load. The mode can also be called “Normal mode”.
Buffer mode Describes a condition where the input voltage is below the transfer threshold level, the unit
is running on capacitors (buffering) and the output is loaded within the allowed limits.
The mode can also be called “Capacitor mode”.
Inhibit mode Describes a condition where buffering is disabled on purpose (e.g. for service actions).
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 included.
E.g.: DC 12V describes a 12V battery disregarding whether it is full (13.7V) or flat (10V).
24Vdc A figure with the unit (Vdc) at the end is a momentary figure without any additional
tolerances included.
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 with a strongly preferred implementation.
PULS DIMENSION 1.| 2.|
UF20.241
UF
-Series 24V, 20A, 200MS, BUFFER MODULE
Oct. 2016 / Rev. 2.0 DS-UF20.241-EN
All parameters are specified at 24V, 20A, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
3/18
1. I
NTENDED
U
SE
This device is designed for installation in an enclosure. Use an appropriate enclosure which protects against
mechanical, electrical and fire hazards.
This device is intended for professional use in areas such as in industrial control, office, communication, and
instrumentation equipment.
Do not use this device in equipment or systems where malfunction may cause severe personal injury or threaten
human life.
2. I
NSTALLATION
N
OTES
This device may only be installed and put into operation by qualified personnel.
This device does not contain serviceable parts or fuses.
If damage or malfunction should occur during installation or operation, immediately turn power off and send unit to
the factory for inspection.
The unit must be powered from a SELV source (according to IEC 60950-1), PELV source (according to IEC 62477-1) or an
Isolated Secondary Circuit (according to UL 508) power source.
Use DIN-rails according to EN 60715 with a height of 7.5 or 15mm.
Mounting orientation must be power terminals on top of the unit.
Do not obstruct air flow as the unit is convection cooled. Ventilation grid must be kept free of any obstructions.
Signal lines (ready, active and inhibit) must be shorter than 30m.
Use an appropriately sized power supply, which can deliver the additional required internal current consumption
(including the charging current) specified as input current in the table of chapter 4 and Fig. 4-1.
The following installation clearances must be maintained:
- Left / right: 0mm
- On top of the unit: 40mm
- On bottom of the unit: 20mm
Agency approvals apply only for altitudes up to 2000m.
Maximum surrounding air temperature: +70°C / +158°F.
Caution for Canada: For use in a controlled environment according to CSA 22.2 No 107.1-01.
WARNING
Risk of electrical shock, fire, personal injury or death.
- 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 dangerous voltages may be 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.
PULS DIMENSION Suwlv Vuuage Transfer Threshold
UF20.241
UF
-Series 24V, 20A, 200MS, BUFFER MODULE
Oct. 2016 / Rev. 2.0 DS-UF20.241-EN
All parameters are specified at 24V, 20A, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
4/18
3. F
UNCTIONAL
D
ESCRIPTION
Working principle
When the power supply provides sufficient voltage, the buffer module stores energy in
the integrated electrolytic capacitors. In case of a voltage dip or loss, this energy is
released to the DC bus in a regulated process.
Bridges mains faults without interruption
Statistic show that 80% of all mains fault lasts less than 0.2s. These mains faults are
completely bridged by the buffer unit. This increases the reliability of the system as a
whole.
Extended hold-up time
Once mains power fails or is switched off, the buffer unit will continue to provide the
load current for a defined period of time. Process data can be saved and processes can be
terminated before the DC power switches off. Controlled restarts are subsequently
possible.
Easy to handle, expandable and maintenance-free
The buffer module does not require any control wiring. It can be added parallel to the
load circuit at any given point. Buffer modules can be connected in parallel to increase
the output ampacity or the hold-up time.
Fig. 3-1 Typical wiring diagram Fig. 3-2 Transfer behavior
PE
L
+
-
N
Power
Supply
+
-
Load
+
-
Buffer
Module
optional
Buffer
Mode
Supply
Voltage
Power
Supply
Output
t
t
Transfer Threshold
Power
Supply
Mode
Power
Supply
Mode
DC
Charge
Discharge
Storage
AC
DC
Buffer Module
AC
DC
Buffer Module
DC
Buffer
Module
Power
Supply Load
AC
+
-
1174\flw74i GS E DIMENSION PULS
UF20.241
UF
-Series 24V, 20A, 200MS, BUFFER MODULE
Oct. 2016 / Rev. 2.0 DS-UF20.241-EN
All parameters are specified at 24V, 20A, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
5/18
4. E
LECTRICAL
R
ATINGS
Supply
voltage Nom. DC 24V -20%/+25%
Supply
voltage range1) Nom. 19.2 - 30Vdc
Normal
operating voltage range2) Typ. 2330Vdc
Transfer voltage for switching
into
buffer mode
Typ.
Typ.
22.5Vdc
VIN1V
Back-up threshold jumper set to “22.5V fixed”
Back-up threshold jumper set to “VIN – 1V”
See also chapter 5.
Transfer voltage for switching
from buffer mode into power
supply mode
Typ.
Typ.
22.5Vdc
VBUFFER + 1V
Back-up threshold jumper set to “22.5V fixed”
Back-up threshold jumper set to “VIN – 1V”
See also chapter 5.
Buffer volta
ge Typ. Same as the transfer voltage for switching into buffer mode.
Ripple and noise voltage
- in buffer mode
Max.
200mVpp
Generated by the buffer module.
Defined at 20Hz to 20MHz, 50Ohm
- in power supply mode The ripple and noise voltage is defined by the power supply.
Current consumption
Typ.
Min.
Max.
80mA
400mA
600mA
When capacitor is fully charged
During charging of the capacitors
During charging of the capacitors
Power dissipation
Typ. 1.9W When capacitor is fully charged
Buffer current
Min. 20A
Buffer current overload behavior
Electronically limited, buffering stops and capacitor gets discharged
below 17V. See Fig. 4-2.
Allowed voltage between
supply
voltage and chassis ground
Max. 60Vdc or
42.4Vac
Continuous, IEC 62477-1
Capacitive and inductive loads
No limitation
1) Supply Voltage Range:
At voltages within the input voltage range, control functions such as LEDs, monitoring features, relay contacts, etc. are functioning
normally. Within the input voltage range the unit can either be in power supply mode or in buffer mode.
2) Normal Operating Voltage Range:
The normal operating voltage range describes the supply voltage, which supports the full functionality of the buffer module (including
charging) but without entering the buffer mode.
Fig. 4-1 Selection of an appropriate power supply Fig. 4-2 Output characteristic in buffer mode,
22.5V fixed mode, typ.
Internal
current
consumption
Current
consumption
for charging
Load
Current
Power
Supply
Current
Buffer Voltage
0
0 20
4
8
12
28V
16
20
32A124 8 16 24 28
Output Current
24
22.5V
Buffering stops
below 17V
S B DIMENSION PULS 5 6.
UF20.241
UF
-Series 24V, 20A, 200MS, BUFFER MODULE
Oct. 2016 / Rev. 2.0 DS-UF20.241-EN
All parameters are specified at 24V, 20A, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
6/18
5. S
ELECTION OF THE
B
ACK
-
UP
T
HRESHOLD
V
OLTAGE
The buffer behavior can be selected with the back-up jumper selector between “Fixed Mode” and “Variable Mode”.
Fixed Mode: (Jumper in position „2-3“ or „22.5V fixed”)
If the supply output voltage falls below 22.5V, buffering starts and the supply voltage will be kept at this level.
This adjustment is recommended:
- when power supplies other than the DIMENSION Q-series are used
- with back-feeding loads
- when the buffer module is placed close to the load or
- whenever in doubt.
Variable Mode: (Jumper in position „1-2“ or „VIN – 1V”)
Buffering starts if the supply voltage decreases by more than 1V. Buffering ends when supply voltage increases by
more than 1V
Voltage changes slower than 0.54V/s will be ignored if the voltage is above 22.5V. Below 22.5V buffering starts
immediately.
This adjustment is recommended for any application where 22.5V is too low for the application or when the buffer
module is placed close to the power supply.
The factory setting is fixed mode, A missing jumper means also fixed mode.
6. B
UFFER
T
IME
The buffer time (sometimes also called autonomy time) is the maximum period of time for which the capacitor can
maintain the required output current. The buffer time mainly depends on the output current in buffer mode.
To increase the buffer time any given number of buffer modules can be connected in parallel.
Buffer time
Min. 200ms At 22.5V, 20A
Min.
430ms
At 22.5V, 10A
Typ. 310ms At 22.5V, 20A
Typ. 670ms At 22.5V, 10A
Typ.
43s
At 22.5V, 0.1A
Fig. 6-1 Buffer time, typ. Fig. 6-2 Buffer time for small buffer currents,
typ.
Buffer Current, typ.
0
00.3 3s
5
15
10
20A
0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7
Buffer Time
Buffer Current, typ.
0
3 18s
0.5
1.5
1.0
2.0A
6 9 12 15
Buffer Time
PULS I DIMENSION
UF20.241
UF
-Series 24V, 20A, 200MS, BUFFER MODULE
Oct. 2016 / Rev. 2.0 DS-UF20.241-EN
All parameters are specified at 24V, 20A, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
7/18
7. C
HARGING
T
IME
Charging of the internal capacitors is indicated by the status LED, which is flashing with a slow frequency (1.25Hz).
Charging
time Min. 20s Initial charging 1)
Max. 29s Initial charging 1)
Min. 15s Re-charging 2)
Max. 21s Re-charging 2)
1) Initial charging is the first charge after voltage is applied to the buffer module.
2) Re-charging is the charging of the internal capacitors after voltage interruptions shorter than 2minutes.
Fig. 7-1 Charging time, re-charging
Charge
20
0 5 10 30s
Charging Time
40
80
60
100%
15 20 25
max.
min.
8. OPERATING DIAGRAMS
Fig. 8-1 Operating diagram Fig. 8-2 Signal schematic
Ready
t
Active
t
Optocoupler high ohmic
Optocoupler high ohmic
Optocoupler low ohmic
Optocoupler
low ohmic
V
Mains
t
V
Buffer
Capacitor
t
V
out
t
Charging Mode
LED
t
Buffer Mode
Hold-up Time Power Supply
Standby
Mode
10Hz1.25Hz
8 Ready
7 Active
6 +
5,1V
3mA
9 Inhibit
UF20
PULS DIMENSION 10. R S 11.| |
UF20.241
UF
-Series 24V, 20A, 200MS, BUFFER MODULE
Oct. 2016 / Rev. 2.0 DS-UF20.241-EN
All parameters are specified at 24V, 20A, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
8/18
9. A
CTIVE
S
IGNAL
The signal “Active” (pin 7) is an opto-coupler output which is low ohmic while buffer capacitors are discharged.
Wiring scheme see Fig. 8-2, Fig. 25-1 and Fig. 25-2.
Signal voltage
Max. 35Vdc Voltage between pin 6 and 7
Signal current
Max. 10mA
Voltage drop across opto
-coupler 0.9V / 3V At 1mA / 5mA while opto-coupler is low ohmic
Leakage current
Max. 50µA While opto-coupler is high ohmic
Isolation voltage
See chapter 21.
10. R
EADY
S
IGNAL
The signal “Ready” (pin 8) is an opto-coupler output which is low ohmic when buffer capacitors are fully charged.
Wiring scheme see Fig. 8-2, Fig. 25-1 and Fig. 25-2.
Signal voltage
Max. 35Vdc Voltage between pin 6 and 8
Signal current
Max. 10mA
Voltage drop across opto
-coupler 0.9V / 3V At 1mA / 5mA while opto-coupler is low ohmic
Leakag
e current Max. 50µA While opto-coupler is high ohmic
Isolation voltage
See chapter 21.
11. I
NHIBIT
I
NPUT
Buffering can be disabled or interrupted with the inhibit input (pin 9). Therefore, pin 6 should be connected to the
positive pole of the terminal voltage or to the external control voltage and pin 9 must be connected to the
corresponding negative pole.
Inhibiting the unit also discharges the internal capacitors. Charging of the capacitor is not possible when the buffer
module is in inhibit mode.
Wiring scheme see Fig. 8-2, Fig. 25-1 and Fig. 25-2.
Signal voltage
Max. 35Vdc (between pin 6 and pin 9)
Signal current
Max.
4mA, current limited
Inhibit mode
The unit does not buffer (or stops buffering) if the voltage between pin 6 and pin 9 is
higher than 10V. Below 6V buffering will function again.
Isolation voltage
See chapter 21.
PULS I DIMENSION 12. E P L 13. L E E MTBF
UF20.241
UF
-Series 24V, 20A, 200MS, BUFFER MODULE
Oct. 2016 / Rev. 2.0 DS-UF20.241-EN
All parameters are specified at 24V, 20A, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
9/18
12. E
FFICIENCY AND
P
OWER
L
OSSES
Efficiency
Typ. >99% Power supply mode, 20A output current,
capacitors fully charged
Power losses
Typ. 1.9W Power supply mode, 0A output current,
capacitors fully charged
13. L
IFETIME
E
XPECTANCY AND
MTBF
Ca
lculated lifetime expectancy*) 166 000h*) Stand-by mode, 40°C
469 000h
*)
Stand-by mode, 25°C
MTBF
**)
SN 29500, IEC 61709
2 327 000h
Stand-by mode, 40°C
4 219 000h Stand-by mode, 25°C
MTBF
**) MIL HDBK 217F 398 000h Stand-by mode, 40°C, Ground Benign GB40
624 000h Stand-by mode, 25°C Ground Benign GB25
132 000h Stand-by mode, 40°C, Ground Fixed GF40
195 000h Stand-by mode, 25°C Ground Fixed GF25
*) 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.
PULS nlnnerusnom 14.F D i} F 11 L i - T : i} [ J ' R" = 2‘ + I U l .3 — ’fiH‘K !' ‘ » 7$1L9ia 15.T W
UF20.241
UF
-Series 24V, 20A, 200MS, BUFFER MODULE
Oct. 2016 / Rev. 2.0 DS-UF20.241-EN
All parameters are specified at 24V, 20A, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
10/18
14. F
UNCTIONAL
D
IAGRAM
Fig. 14-1 Functional diagram
Buffer Capacitor
Charger &
Inrush Limiter
Buffer
Capacitor
Buffer Capacitor
Discharger
Status
LED
7 Active
6 (+)
Ready Monitor
+
-
Active Monitor
+
-
8 Ready
9 Inhibit
Opto-coupler
Buffer
Capacitor
Shut-Down
Input / Output
Voltage Monitor
Back-up
Level
Selector
Reverse-
Polarity
Protection
-
-
+
+
Safety and
Over-
Voltage
Protection
Chassis
Ground
Supply
Voltage
Opto-coupler
Opto-coupler
15. T
ERMINALS AND
W
IRING
The terminals are IP20 finger safe constructed and suitable for field and factory wiring.
Supply voltage, chassis ground Signals
Type
Quick-connect spring-clamp terminals Pluggable screw terminals
Solid wire
Max. 6mm2 Max. 2.5mm2
Stranded wire
Max. 4mm2 Max. 2.5mm2
American Wire Gauge
Max. AWG 20-10 AWG 22-14
Max. wire diameter
Max. 2.8mm (including ferrules) 2.25mm (including ferrules)
Wire stripping length
Typ. 10mm / 0.4inch 6mm / 0.25inch
Tightening torque
Not applicable 0.4Nm / 3.5lb.inch
Screwdriver
Not applicable 3mm slotted
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 and
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)
Unused terminal compartments should be securely tightened or closed.
e)
Ferrules are allowed.
PULS DIMENSION 16.F TS U E J'LH Chargmg L97 '_ _ + + MW Dwscnargng Chassis DC 24V I 20A 0 Status Ground 2-: 22.5Vfixed - g 1-2 Vin-1VG 1 Back—up Threshold PULS U F20 Butler Unit 5 + 7 Active 8 Ready 9 Inhibit \> \n \U
UF20.241
UF
-Series 24V, 20A, 200MS, BUFFER MODULE
Oct. 2016 / Rev. 2.0 DS-UF20.241-EN
All parameters are specified at 24V, 20A, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
11/18
16. F
RONT
S
IDE AND
U
SER
E
LEMENTS
Fig. 16-1 Front side
A Supply Voltage Terminals
Quick-connect spring-clamp terminals, two per polarity
+ Positive supply voltage terminal
Negative (return) supply voltage terminal
B Chassis Ground Terminal
Quick-connect spring-clamp terminals
Connection of the chassis to ground (earth) is optional
and only required for a few specific applications.
C Signal Connector
4-pole plug connector with screw termination comprises
the following signals:
- “Active” signal, for details see chapter 9.
- “Ready” signal, for details see chapter 10
- “Inhibitinput, for details see chapter 11
D Status LED
This green LED indicates that the following information:
- OFF: Capacitors are discharged or supply voltage is
below 22V.
- ON: Capacitors are fully charged
- Slow flashing (1.25Hz):
Capacitors are getting charged.
- Fast flashing (10Hz):
Capacitors are getting discharged.
E Back-up Threshold Jumper
Option 1: Fixed mode (Jumper in position 2-3)
The unit switches to buffer mode as soon as the voltage falls
below 22.5V.
Option 2: Variable mode (Jumper in position 1-2)
Unit switches to buffer mode when input voltage decreases
by 1V. Voltage changes slower than 0.54V/s will be ignored if
the voltage is above 22.5V. Below 22.5V buffering starts
immediately.
For more details see chapter 5.
PULS I DIMENSION 17. EMC
UF20.241
UF
-Series 24V, 20A, 200MS, BUFFER MODULE
Oct. 2016 / Rev. 2.0 DS-UF20.241-EN
All parameters are specified at 24V, 20A, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
12/18
17. EMC
The buffer module is suitable for applications in industrial environment as well as in residential, commercial and light
industry environment.
EMC Immunity
for all operating modes
According to generic standards: EN 61000-6-1 and EN 61000-6-2
Electrostatic discharge
EN 61000-4-2 Contact discharge *)
Air discharge *)
8kV
15kV
Criterion A
Criterion A
Electromagnetic RF field
EN 61000-4-3 80MHz-2.7GHz 10V/m Criterion A
Fast transients (Burst)
EN 61000-4-4 Input lines
Output lines
Signals lines pin 6, 7, 8, 9 **)
2kV
2kV
2kV
Criterion A
Criterion A
Criterion A
Surge voltage on
supply
voltage terminals
EN 61000-4-5 + -
+ / -
chassis ground
0.5kV
1kV
Criterion A
Criterion A
Surge voltage on inhibit
input, active signal and
ready signal
EN 61000-4-5 Not applicable since length of signal wire specified shorter than
30m.
Conducted disturbance
EN 61000-4-6 0.15-80MHz 10V Criterion A
*) Chassis ground connection earthed (grounded)
**) Tested with coupling clamp
Criterions:
A: Buffer module shows normal operation behavior within the defined limits.
EMC Em
ission
for s
tandby- and charging
mode
According to generic standards: EN 61000-6-3 and EN 61000-6-4
Conducted emission
,
supply voltage
IEC/CISPR 16-1-2, IEC/CISPR 16-2-1 Limits for DC power ports acc. EN 61000-6-3
fulfilled
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.
Switching Frequency
The buffer module has two converters with variable frequencies included.
6 to 610kHz Charging converter at 24V input (is only active during charging)
The frequency depends on the state of charge of the capacitors
10 to 70kHz Buffer converter at buffering at 22.5V
The frequency depends on the output current. The values are
between 10% and 100% of the nominal buffer current
PULS I DIMENSION 18. E 19. P F 20. S F
UF20.241
UF
-Series 24V, 20A, 200MS, BUFFER MODULE
Oct. 2016 / Rev. 2.0 DS-UF20.241-EN
All parameters are specified at 24V, 20A, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
13/18
18. E
NVIRONMENT
Operational temperature
*)
-25°C to +70°C (-13°F to 158°F)
St
orage temperature -40 to +70°C (-40°F to 158°F) For storage and transportation
Humidity
**) 5 to 95% r.H. IEC 60068-2-30
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) Approvals apply only up to 2000m
Over
-voltage category III IEC 62103, EN 62477-1
II IEC 62103, EN 62477-1, above 2000m altitude
Degree of pollution
2 IEC 62103, EN 62477-1, not conductive
LABS compatibility
The unit does not release any silicone or other LABS-critical substances and is suitable for
use in paint shops.
*) 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 while condensation is present
19. P
ROTECTION
F
EATURES
Electrical protection
Electronically protected against overload, no-load and short-circuits
Over-voltage protection in
buffer mode
Typ. 32Vdc
Max. 35Vdc
In case of an internal buffer module defect, a
redundant circuit limits the maximum output voltage.
Buffering stops and automatically attempts to restart.
Degree of protection
IP 20 EN/IEC 60529
Penetra
tion protection > 3.5mm E.g. screws, small parts
Reverse polarity protection
Yes Max. -35V
Input overvoltage protection
Yes Max. 35V, no harm or defect of the unit
Internal input fuse
Not included
20. S
AFETY
F
EATURES
Class of protection
No classification
according to IEC 61140 or
IEC 60950-1 possible
Install the buffer module according to Class III rules
Isolation resistance
> 500MOhm
> 500MOhm
> 500MOhm
Supply voltage to signal port
Supply voltage to housing
Signal port to housing
Chassis ground te
rminal
resistance
< 0.1Ohm Between housing and chassis ground terminal
PULS DIMENSION 21. D S \ / |:| 22. A C E IECEE CBSCHEME a“ US 6 us usun WD com E0
UF20.241
UF
-Series 24V, 20A, 200MS, BUFFER MODULE
Oct. 2016 / Rev. 2.0 DS-UF20.241-EN
All parameters are specified at 24V, 20A, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
14/18
21. D
IELECTRIC
S
TRENGTH
The signal port (active and ready signal and inhibit input) is floating and separated from the supply voltage.
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 poles of the
power port terminals together as well as all poles of the signal port before conducting the test. When testing, set the
cut-off current settings to the value in the table below. The following isolation tests were performed:
Fig. 21-1 Dielectric strength A B C
Supply
Voltage Chassis
Active and Ready Signal
Inhibit Input
A
CB
Type test 60s 500Vac 500Vac 500Vac
Factory test 5s 500Vac 500Vac 500Vac
Field test 5s 500Vac 500Vac 500Vac
Cut-off current setting > 1mA > 1mA > 1mA
22. A
PPROVALS
E
U Declaration of Conformity
The CE mark indicates conformance with the EMC directive
IEC
60950-1
2
nd Edition
CB Scheme,
Information Technology Equipment
UL 60950
-1
2
nd Edition
Recognized for use as Information Technology Equipment,
U.S.A. (UL 60950-1) and Canada (C22.2 No. 60950-1);
E-File: E137006
UL 508
IND. CONT. EQ.
Listed for use as Industrial Control Equipment;
U.S.A. (UL 508) and Canada (C22.2 No. 107-1-01);
E-File: E198865
PULS WMENSDN 23. P 13 32 A77++ Sums O H vm w 273 22 5v med a x 7 Adwe a may 9 mm“ 9575 Wldll 64mm 71 i: Q E» 56 E Q, 9 [ g 1 CT) I L. Depth 102mm 402" DINV Ram 116mm depth
UF20.241
UF
-Series 24V, 20A, 200MS, BUFFER MODULE
Oct. 2016 / Rev. 2.0 DS-UF20.241-EN
All parameters are specified at 24V, 20A, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
15/18
23. P
HYSICAL
D
IMENSIONS AND
W
EIGHT
Width
64mm 2.13’’
Height
124mm 4.88’’
Depth
102mm 4.02’’
The DIN-rail height must be added to the unit depth to calculate the total required
installation depth.
Weight
740g / 1.63lb
DIN
-rail Use 35mm DIN-rails according to EN 60715 or EN 50022 with a height of 7.5 or 15mm.
Housing material
Body: Aluminium alloy
Cover: Zinc-plated steel
Installation clearances
See chapter 2
Fig. 23-1 Front view Fig. 23-2 Side view
FE» @ J‘ PULS 24. A
UF20.241
UF
-Series 24V, 20A, 200MS, BUFFER MODULE
Oct. 2016 / Rev. 2.0 DS-UF20.241-EN
All parameters are specified at 24V, 20A, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
16/18
24. A
CCESSORIES
24.1. ZM1.WALL - WALL MOUNTING BRACKET
This bracket is used to mount the buffer module on a wall 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.
Fig. 24-1 Wall mounting Fig. 24-2 Mounting Dimensions - Wall mounting bracket
PULS DIMENSION
UF20.241
UF
-Series 24V, 20A, 200MS, BUFFER MODULE
Oct. 2016 / Rev. 2.0 DS-UF20.241-EN
All parameters are specified at 24V, 20A, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
17/18
24.2. ZM14.SIDE - SIDE MOUNTING BRACKET
This bracket is used to mount the buffer module 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 sideway DIN-rail mounting, the removed aluminum brackets and the black plastic slider need
to be mounted on the steel bracket.
Fig. 24-3
Side mounting without DIN-
rail brackets
Fig. 24-4
Side mounting with DIN-rail
brackets
Fig. 24-5
Mounting Dimensions
Side mounting bracket
EEEI DIMENSION 25 W PULS
UF20.241
UF
-Series 24V, 20A, 200MS, BUFFER MODULE
Oct. 2016 / Rev. 2.0 DS-UF20.241-EN
All parameters are specified at 24V, 20A, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
18/18
25. W
IRING
D
IAGRAMS
Fig. 25-1 General wiring diagram Fig. 25-2 Signals supplied from an external voltage source
L N PE
+ +
- -
Power
Supply
Adj
Overload
DC-OK
optional
L
N
PE
Load
+
-
Inhibit
Active
Relay, lamp or signal
Ready
Relay, lamp or signal
+ +
- -
UF20
Buffer
Module
Back-up
Threshold
Status
6 +
7 Active
8 Ready
9 Inhibit
L N PE
+ +
- -
Power
Supply
Adj
Overload
DC-OK
optional
L
N
PE
Load
+
-
Inhibit
Active
Relay, lamp or signal
Ready
Relay, lamp or signal
+ +
- -
UF20
Buffer
Module
Back-up
Threshold
Status
6 +
7 Active
8 Ready
9 Inhibit
External
Voltage Source
+
-
Fig. 25-3 Paralleling of buffer modules Fig. 25-4 Decoupling of buffered branches
L N PE
+ +
- -
Power
Supply
Adj
Overload
DC-OK
optional
L
N
PE
+ +
- -
UF20
Buffer
Module
Back-up
Threshold
Status
6 +
7 Active
8 Ready
9 Inhibit
Load
+ -
+ +
- -
UF20
Buffer
Module
Back-up
Threshold
Status
6 +
7 Active
8 Ready
9 Inhibit
L N PE
+ +
- -
Power
Supply
Adj
Overload
DC-OK
optional
L
N
PE
Un-
buffered
Load
+
-
YR2
Redund-
ancy
Module
+
-
OUT
+
-
IN 1
+
-
IN 2
Buffered
Load
+
-
+ +
- -
UF20
Buffer
Module
Back-up
Threshold
Status
6 +
7 Active
8 Ready
9 Inhibit

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