Page 1
Q.
UC10.241, UC10.242
UC-Series
GENERAL DESCRIPTION
The DIMENSION UC-Series are DC-UPSs utilizing
Electrochemical Double Layer Capacitors (EDLC),
commonly known as Ultracapacitors or Supercapacitors,
which are installed inside the DC-UPS. They can bridge
power failures or voltage fluctuations and supply
voltage to the DC 24V bus for a certain period, which
allows for a safe shut-down of the system. Expensive
downtimes, long restart cycles and loss of data can be
avoided.
In times when the power supply provides sufficient
voltages, the DC-UPS stores energy in the capacitors. In
case of a mains voltage fault, this energy is released to
the DC bus in a regulated process.
The DC-UPSs are maintenance-free and have a similar
lifetime expectancy as power supplies. No regular
replacement of the capacitors is necessary as is required
for battery based DC-UPS systems. The wide
temperature range from -40°C to +60°C makes the unit
suitable for many applications.
The DC-UPSs come in two versions which differ in the
size of the installed capacitors.
ORDER NUMBERS
DC-UPS UC10.241 6kWs energy storage
UC10.242 12kWs energy storage
Accessory ZM2.WALL Panel/ wall-mount bracket
24V, 15A, CAPACITOR-BASED DC-UPS
CAPACITOR-BASED DC-UPSS
Built-in Capacitors as Energy Source
(EDLC Electrochemical Double Layer Capacitors)
Wide Temperature Range from -40°C to +60°C
Typically >10 Years Operational Lifetime Expectancy
Regulated Output Voltage in Buffer Mode
No Ventilated Cabinets Required
(No Generation of Hydrogen as VRLA batteries do)
Active Balancing for Longest Life and Buffer Times
Short Charging Time, Unit is Rapidly Back in Ready
Mode
Output is Decoupled from the Input to Separate Load
Circuits into Buffered and Non-buffered Sections
Supports PC-Mode Function
3 Year Warranty
SHORT-FORM DATA
Nominal voltage DC 24V
Output current 15A continuous
Buffer voltage 22.0 - 22.65V fixed, 15A – 0A
Input current typ. 1.1A during charging,
output current
not included
Capacitor size 6kWs
12kWs
Charging time 16 minutes
32 minutes
Buffer time 16.5s at 10A
33s at 10A
Power losses 4.6W in normal mode
Temperature range -40°C to +60°C operational
Dimensions
W x H x D
Weight 1150g / 2.54lb
126x124x117mm
198x124x117mm
1720g / 3.79lb
UC10.241
UC10.242
UC10.241
UC10.242
UC10.241
UC10.242
at 10A output
current
UC10.241
UC10.242
UC10.241
UC10.242
MARKINGS
IND. CONT. E
UL 508
UL 60950-1
EMC, RoHS
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
IECEx ATEX
II 3G Ex nA nC II T4 Gc
Class I Div 2
1/27
Page 2
UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
INDEX
Page Page
1.
Intended Use .......................................................3
2. Installation Notes ................................................3
3. Input ....................................................................4
4. Output .................................................................5
5. Charging ..............................................................7
6. Buffer Time..........................................................8
7. Ready and Buffering Relay Contact ...................9
8. Inhibit Input.........................................................9
9. PC-Mode ............................................................10
10. Efficiency and Power Losses..............................11
11. Lifetime Expectancy and MTBF.........................12
12. Functional Diagram...........................................13
13. Terminals and Wiring........................................14
14. Front Side and User Elements...........................15
15. EMC....................................................................16
16. Environment......................................................17
17. Protection Features ...........................................18
18. Safety Features..................................................18
The information presented in this document is believed to be accurate and reliable and may change without notice.
No part of this document may be reproduced or utilized in any form without permission in writing from the publisher.
19. Approvals.......................................................... 19
20. RoHS, REACH and Other Fulfilled Standards .. 19
21. Physical Dimensions and Weight..................... 20
22. Accessories ........................................................ 21
22.1. ZM2.WALL – Wall-Mounting Bracket ...... 21
23. Application Notes............................................. 22
23.1. External Input Protection.........................22
23.2. Output Circuit Breakers............................22
23.3. Parallel Use to Increase Output Current..22
23.4. Parallel Use for Redundancy ....................23
23.5. Parallel Use for Longer Buffer Times.......23
23.6. Series Use for 48V Applications ...............24
23.7. Using the Inhibit-Input............................. 24
23.8. External Controlled Delayed Shut-down.25
23.9. What do KJ and KWS mean? ...................26
23.10. Troubleshooting .......................................27
TERMINOLOGY AND ABREVIATIONS
Normal mode Describes a condition where the capacitor is charged, the input voltage is in range and the
output is loaded within the allowed limits.
Buffer mode Describes a condition where the input voltage is below the transfer threshold level, the unit is
running on capacitor (buffering) and the output is loaded within the allowed limits.
Charging mode Describes a condition where the capacitor is being charged, the input voltage is in range and
the output is loaded within the allowed limits.
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.
AC 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)
24Vac A figure with the unit (Vac) 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.
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
2/27
Page 3
UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
1. INTENDED USE
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. INSTALLATION NOTES
This device may only be installed and put into operation by qualified personnel.
The input must be powered from a SELV or PELV power source.
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 power terminals are located on the top of the unit.
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. a power supply).
Fig. 2-1 Typical wiring diagram
non-buffered branches
buffered branches
+ +
- -
24V Output
Power
Supply
Input
L N PE
+
DC-UPS
y
d
a
e
R
-
IN
UC10
u
B
-
+
OUT
g
e
n
d
i
t
r
o
i
e
b
f
i
M
f
-
h
C
n
I
P
-
+
The EDLC (storage capacitors) contain Acetonitrile and Tetraethylammonium-tetrafluoroborate. These components are
declared as non-dangerous goods in regards to shipment. A safety datasheet can be provided when required.
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 hazardous energy may be present inside.
Info for service personnel: Before opening the unit, wait at least 45 minutes after disconnecting the unit from input
power so that the remaining capacitor charge has completely been discharged.
- 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.
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
3/27
Page 4
UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
Notes for use in hazardous location areas:
The DC-UPS is suitable for use in Class I Division 2 Groups A, B, C, D locations and for use in Group II Category 3 (Zone
2) environments and are evaluated according to EN 60079-0 and EN 60079-15.
WARNING EXPLOSION HAZARDS!
Substitution of components may impair suitability for this environment. Do not disconnect the unit or change unit
settings unless power has been switched off or the area is known to be non-hazardous.
A suitable enclosure must be provided for the end product which has a minimum protection of IP54 and fulfils the
requirements of the EN 60079-15.
3. INPUT
Input voltage nom. DC 24V
Input voltage ranges typ.
max.
Transfer threshold voltage
typ.
typ.
max.
Turn-on voltage typ.
max.
Allowed voltage between input
max. 60Vdc or
and earth (chassis)
22.5 to 30Vdc
30 to 35Vdc
22.45V
22.55V
22.60V
22.88V
22.8Vdc
23.0V
42.4Vac
Current consumption typ. 0.09A capacitors charged, output current not included
typ.
max.
1.1A
1.3A
Input current max. 17A during charging an full output current
Return current typ.
max.
Suitable power sources on
input
-9mA
-11mA
no limitation in the maximum power supply current
Fig. 3-1 Input voltage range Fig. 3-2 Current budget
V
OUT
ABC
-20%/+25%
±1%
continuous operation
temporarily allowed, no damage to the unit
Between 30 and 35Vdc buffering is not possible, the
unit indicates “Check Input Voltage” with the red LED
on the front
at no load
at 10A buffer current
at 15A buffer current
at 15A buffer current
The transfer threshold voltage describes the input
voltage, where the unit switches into buffer mode and
delivers output voltage from the capacitors if the input
was above the turn-on level before and all other buffer
conditions are fulfilled.
The output does not switch on if the input voltage is
below this level.
continuous, IEC 62103
during charging, output current not included
Leakage current to input in buffer mode
Input
Current
Output
Current
18 30 35V22.50
A: Buffer mode
B: Normal mode
C: Short-term, no harm to the unit
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
V
IN
Internal
current
consumption
Current
consumption
for capacitor
charging
4/27
Page 5
UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
4. OUTPUT
The output section of the DC-UPS is fully controlled and is equipped with an electronic current limitation. A current
overloading of the DC-UPS cannot happen, independent of which sizes of power supplies are used on the input of the
DC-UPS.
The current limitation works in a switching mode which reduces the power losses and heat generation to a minimum.
Output in normal mode:
In normal mode (and also in charging mode), the output voltage is slightly lower as the input voltage. The output
voltage follows the input voltage reduced by the input to output voltage drop.
Input to output voltage drop max. 0.3V
0.45V
Ripple & noise voltage max. 30mVpp at 20Hz to 20MHz, 50Ohm measurement. This figure
Output current nom. 15A continuously allowed for the entire voltage range
Output power nom. 360W at 24V
Overload behavior continuous
current
Current limitation typ.
min.
16A
15A
Short-circuit current min. 17.9A load impedance 100mOhm, see Fig. 4-2
max. 21.0A load impedance 100mOhm, see Fig. 4-2
Output capacitance typ. 1 500µF included inside the DC-UPS
Capacitive and inductive loads No limitation
Output in buffer mode:
The output voltage is fully regulated in buffer mode.
The unit switches into buffer mode, when the input voltage falls below the transfer threshold input voltage level, The
buffer voltage is slightly lower than this threshold input voltage. The unit switches back to normal mode, as soon as
the input voltage exceeds the transfer threshold voltage, which is specified in the input section.
Output voltage typ. 22.45V
22.25V
22.12V
±1%
±1%
±1%
Ripple & noise voltage max. 30mVpp at 20Hz to 20MHz, 50Ohm measurement
Output current nom. 15A continuously allowed
Output power nom. 360W at 24V
Overload behavior continuous current see Fig. 4-2
Current limitation typ.
min.
16A
15A
Short-circuit current min. 17.9A load impedance 70mOhm, see Fig. 4-2
max. 21.0A load impedance 50mOhm, see Fig. 4-2
Capacitive and inductive loads No limitation
at 10A output current
at 15A output current, see Fig. 4-1
indicates the ripple & noise voltage which is produced
by the DC-UPS. It can be higher if the supplying source
has a higher ripple and noise voltage.
see Fig. 4-2
see Fig. 4-2
at no load
at 10A buffer current
at 15A buffer current
see Fig. 4-2
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
5/27
Page 6
A
UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
Fig. 4-1 Input to output voltage drop in
Voltage drop
400mv
300mv
200mv
100mV
normal mode, typ.
0
02 10
Output Current
4 6 8 12 14
16A
Fig. 4-2 Output characteristic and overload
behavior in normal and buffer mode, typ.
Output Voltage
28V
24
20
16
12
8
4
0
0 5 10 15 20
Output Current
25
Fig. 4-3 Transition from buffer mode to
normal mode and vice versa, definitions
Input
voltage
24V
Output
voltage
24V
Normal
mode
Transfer threshold
Buffer
mode
Normal
mode
t
t
Fig. 4-4 Transfer behavior, typ.
2
4
V
Output Voltage
22.25V at 10A
Input Voltage
0
V
500ms/DIV
2
4
V
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
6/27
Page 7
UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
5. CHARGING
During charging, the DC-UPS consumes additional current from the input. See chapter “Input”.
When charging is completed, the “Ready LED” stops flashing and is on solid and the “Ready relay contact” closes.
Charging time
initial charging
Charging time
recharging
typ. 3 minutes
typ. 4 minutes
typ. 5 minutes
Allowed number of charging/
discharging cycles
*) Initial charging means that no input voltage was applied for several hours or longer and the capacitor is completely discharged by the
internal electronics.
**) Recharging means that the electronics inside the DC-UPS has not completely discharged the capacitor. The values in the table apply when
the input voltage is applied immediately after buffering has stopped.
Note:
At the end of the charging process the active balancing circuit reduces the charging current periodically, which can be
seen as current oscillations on the input current.
*)
**)
typ. 16 minutes 32 minutes when capacitor is completely discharged
typ. 1 minute 50s 1 minute 50s after discharging with 10A for 10s
no limitation no limitation
UC10.241 UC10.242
7 minutes 40s after discharging with 10A until buffering
50s
9 minutes 40s after discharging with 5A until buffering
40s
11 minutes
40s
15s
stops
stops
after discharging with 1A until buffering
stops
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
7/27
Page 8
UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
6. BUFFER TIME
The following times are typical values for a new product and the aging effect during operation is not included. More
information about the reduction of the buffer time over the life of the product can be found in the chapter 11
“Lifetime Expectancy and MTBF”.
UC10.241 UC10.242
Buffer Time typ. 1650s 3300s at 0A buffer current
typ. 340s 680s at 0.5A buffer current
typ. 200s 400s at 1A buffer current
typ. 68s 136s at 3A buffer current
typ. 39s 78s at 5A buffer current
typ. 26s 53s at 7A buffer current
typ. 16.5s 33s at 10A buffer current
typ. 9s 18s at 15A buffer current
Fig. 6-1 Buffer time vs. buffer current, typ.
Buffer Current
16A
a
14A
12A
10A
8A
6A
4A
2A
0
b
a
0 20 200s40 60 80 100 120 140 160 180
UC10.241
b
UC10.242
Buffer Times
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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8/27
Page 9
UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
7. READY AND BUFFERING RELAY CONTACT
The DC-UPSs are equipped with two independent relay contacts for remote monitoring and controlling of the unit.
Ready contact
Contact is closed when capacitor is completely charged, input voltage is sufficient and inhibit signal is not active.
Contact ratings max. 60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A
min. 1mA at 5Vdc min. permissible load
Isolation voltage 500Vac, signal port to power port
Buffering contact
Contact is closed when unit is buffering.
Contact ratings max. 60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A
min. 1mA at 5Vdc min. permissible load
Isolation voltage 500Vac, signal port to power port
resistive load
resistive load
8. INHIBIT INPUT
The inhibit input disables buffering. In normal mode, a static signal is required. In buffer
mode, a pulse with a minimum length of 250ms is required to stop buffering. The inhibit
is stored and can be reset by cycling the input voltage. See also section 23.7 for
application notes.
Signal voltage max. 35Vdc
Signal current max. 6mA, current limited
Inhibit threshold min.
max.
Isolation voltage 500Vac, signal port to power port
6Vdc, buffering is disabled above this threshold level
10Vdc
7 +
Inhibit
8
-
3mA
5.1V
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
9/27
Page 10
UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
9. PC-MODE
The PC-mode always turns the output off for at least 5s after a buffer event lasting longer than 1s, independent of
whether the 24V may have recovered during this time. This function ensures that the PC gets a restart signal. To
enable a safe shut-down of the system, the forced turn off of the output is delayed with a constant time of 70s.
To activate the PC-mode, connect the two pins marked with “PC-mode” together on the signal connector together.
If the reset is to be controlled by the PC and not the DC-UPS, a wiring option called “external controlled delayed shut-
down” is available. See section 23.8 for details.
Buffer event ends before buffer capacitors are discharged and buffer event is
Power Supply Output
DC-UPS Output
Capacitor
Fig. 9-1 PC-Mode -
shorter than 70s
>1s
full
empty
70s
5s
Example A:
The buffer event is longer than 1s
and ends before the buffer capacitors
are fully discharged.
After 70s of the beginning of the
buffer event, the output of the DCUPS will be switched off for 5s.
Ready
Contact
Buffering
Contact
closed
open
closed
open
Buffer event discharges the buffer capacitors before the input recovers
Power Supply Output
DC-UPS Output
Fig. 9-2 PC-Mode -
5s
Example B:
The buffer event lasts longer than the
buffer capacitors can supply the
output.
The buffer capacitors are fully
discharged before the input voltage
Capacitor
full
empty
recovers.
The DC-UPS output will turn-on
earliest 5s after the power supply
Ready
Contact
Buffering
Contact
closed
open
closed
open
output voltage has recovered.
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
10/27
Page 11
UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
10. EFFICIENCY AND POWER LOSSES
Efficiency typ. 97.8% Normal mode, 10A output current, capacitor fully
charged
Power losses typ. 2.9W Normal mode, 0A output current, capacitor fully charged
typ. 5.0W During charging, 0A output current
Fig. 10-1 Efficiency vs. output current in
normal mode, typ.
Efficiency vs. output
current in normal mode
98%
97.5
97.0
96.5
96.0
95.5
95.0
94.5
39
Ou
5 7 11 13
u
r
C
t
u
t
p
typ. 97.8% Normal mode, 15A output current, capacitor fully
charged
typ. 4.6W Normal mode, 10A output current, capacitor fully
charged
typ. 7.7W Normal mode, 15A output current, capacitor fully
charged
t
n
e
r
15A
Fig. 10-2 Power losses vs. output current in
Power losses versus output
current in normal mode
normal mode, typ.
8W
7
6
5
4
3
2
1
0
07.5
2.5 5 10 12.5
Ou
t
p
n
e
r
u
r
C
t
u
t
15A
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
11/27
Page 12
UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
11. LIFETIME EXPECTANCY AND MTBF
The lifetime expectancy of the DC-UPS is predominantly affected by the storage capacitors. The biggest influence in
lifetime is a combination of operating voltage and operating temperature of these capacitors. To gain longest
lifetimes, PULS does not utilize the full allowed working voltage for these capacitors and therefore accepts a slightly
shorter buffer time.
The EDLC’s do not experience a true end-of-life, rather the capacitance continually degrades over the life of the DCUPS. The typical degradation behavior resembles that of an exponential decay in the first couple of 1000 hours
followed by a linear degradation. The majority of the capacitance reduction occurs during the initial use of the DC-UPS
and this change in performance then levels off over time. When working with the specified lifetime numbers, the
remaining capacity must always be taken into account. The buffer time correlates linearly to the capacity.
The ultracapacitors have an almost unlimited shelf life (unlike batteries) when stored uncharged at 25°C.
The number of charge/ discharge cycles does not have an impact on the lifetime as long as the number of cycles does
not exceed 100 000. This should not be the case for a typical backup operation.
Lifetime UC10.241 UC10.242
Remaining capacity
Lifetime expectancy
155 000h 270 000h 155 000h 270 000h at 24V, 15A, 25°C
66 000h 115 000h 66 000h 115 000h at 24V, 10A, 40°C
55 000h 96 000h 55 000h 96 000h at 24V, 15A, 40°C
23 000h 40 000h 23 000h 40 000h at 24V, 10A, 55°C
19 000h 34 000h 19 000h 34 000h at 24V, 15A, 55°C
MTBF UC10.241 UC10.242
**) SN 29500, IEC 61709 1 519 000h 1 515 000h at 24V, 10A, 25°C
MTBF
1 443 000h 1 439 000h at 24V, 15A, 25°C
899 000h 895 000h at 24V, 10A, 40°C
854 000h 850 000h at 24V, 15A, 40°C
**) MIL HDBK 217F 525 000h 524 000h at 24V, 10A, 25°C; Ground Benign GB25
MTBF
498 000h 497 000h at 24V, 15A, 25°C; Ground Benign GB25
385 000h 384 000h at 24V, 10A, 40°C; Ground Benign GB40
365 000h 364 000h at 24V, 15A, 40°C; Ground Benign GB40
125 000h 125 000h at 24V, 10A, 25°C; Ground Fixed GF25
118 000h 118 000h at 24V, 15A, 25°C; Ground Fixed GF25
95 000h 95 000h at 24V, 10A, 40°C; Ground Fixed GF40
90 000h 90 000h at 24V, 10A, 40°C; Ground Fixed GF40
*) The 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 and storage capacitors (ultracapacitors). Lifetime expectancy is specified in operational
hours and is calculated according to the capacitor’s manufacturer specification.
**) 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.
*) 186 000h 324 000h 186 000h 324 000h at 24V, 10A, 25°C
85% 75% 85% 75%
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
12/27
Page 13
UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
Fig. 11-1 Lifetime expectancy vs. ambient temp. at 10A output current
10A
A
Output Current
B
Lifetime
Remaining capacity:
A:
85%
B:
75%
years
13.9
11.6
9.2
6.9
4.6
Lifetime
120
100
80
60
000
000
000
000
hours
40 000
20 000 2.3
0
35 40 45
Ambient Temperature
50
55°C
Fig. 11-2 Lifetime expectancy vs. ambient temp. at 15A output current
15A
Lifetime
120
100
80
60
000
000
000
000
hours
A
40 000
20 000 2.3
Output Current
B
Lifetime
Remaining capacity:
A:
85%
B:
75%
years
13.9
11.6
9.2
6.9
4.6
0
35 40 45
Ambient Temperature
12. FUNCTIONAL DIAGRAM
+
24V
Power
Supply
Input
-
Chassis
Ground
Input Fuse,
Reverse Polarity Protection,
Return Current Protection
Input
Voltage
Monitor
50
55°C
Fig. 12-1 Functional diagram
Boost
Converter
(Step-up
Converter)
Charger
Balancing
&
Safety
Circuits
Storage
Capacitors
Electronic
Current
Limiter
Temp
Controller
+
Output
-
Status LED
Diagnosis LED
Warning
(1)
Ready Contact
(2)
(3)
Buffering
(4)
Contact
(5)
+
(6)
-
(7)
(8)
Buffered
Load
(red)
Inhibit
PC-Mode
(green)
(yellow)
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
13/27
Page 14
UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
13. TERMINALS AND WIRING
The terminals are IP20 finger safe constructed and suitable for field and factory wiring.
Type
Solid wire max. 6mm2 max. 1.5mm2
Stranded wire max. 4mm
American Wire Gauge AWG 20-10 AWG 24-14
Max. wire diameter 2.8mm (including ferrules) 1.5mm (including ferrules)
Wire stripping length 10mm / 0.4inch 8mm / 0.3inch
Screwdriver - 2.5mm 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.
Input and output Signals
bi-stable quick-connect spring-clamp terminals pluggable spring-clap terminals
2
max. 1.5mm2
Fig. 13-1 Connecting a wire
1.
Insert the wire
To disconnect wire:
reverse the procedure
2.
Close the lever
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
14/27
Page 15
UC10.241, UC10.242
UC-Series
14. FRONT SIDE AND USER ELEMENTS
AUU Input Terminals (quick-connect spring-clamp terminal)
UUBUU Output Terminals (quick-connect spring-clamp terminal)
The minus-pole has the same reference as the minus-pole
of the input terminals
C
UU Signal Connector (plug connector)
- Ready:
- Buffering:
- Inhibit:
contact is closed when status LED indicates ready
contact is closed during buffering
a voltage applied on this input signal disables
buffering (e.g. during service)
- PC-Mode:
To activate the PC-mode connect the two pins of
the signal connector together; see also section 9.
D Status LED (green)
- Ready
: capacitors are fully charged, no failures detected
- Charging: capacitors are being charged
- Buffering:
Flashing pattern for the green status LED:
1
0
1
0
1
0
Fig. 14-1 Front side (UC10.241)
capacitors are being discharged
Ready
Charging
Buffering
24V, 15A, CAPACITOR-BASED DC-UPS
Diagnosis LED (yellow)
E
Helps troubleshooting and indicates the following:
- Current Overload:
due to a too high output current,
ready contact is open
- High Temperature:
temperature (>65˚C), charging and buffering is
still possible, ready contact is open
- Buffer Time Expired:
buffering stopped due to discharged capacitors
- Inhibit Active:
signal
Flashing pattern for the yellow diagnosis LED:
1
0
1
0
1
0
1
0
F “Warning” LED (red)
- Check Input Voltage:
Indicates a too low or too high input voltage.
The input voltage must be between 23Vdc and
30Vdc to turn-on the output and to start
charging of the capacitors.
- PC-Mode Activated
Indicates, that the PC-Mode (see also section 9) is
activated.
Flashing pattern for the red warning LED:
1
0
1
0
G
Chassis Ground (screw)
Use a M4 ring-type terminal to connect the
housing to ground, when required
output voltage below 20Vdc
signal for too high capacitor
buffering is blocked by the inhibit
Current
Overload
Temperature
Buffer time
expired
Check input
High
Inhibit
active
voltage
PC-Mode
activated
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
15/27
Page 16
UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
15. EMC
The DC-UPS is suitable for applications in industrial environment as well as in residential, commercial and light industry
environment without any restrictions.
EMC Immunity
Electrostatic discharge EN 61000-4-2 contact discharge *)
Electromagnetic RF field EN 61000-4-3 80MHz-2.7GHz 10V/m Criterion A
Fast transients (Burst) EN 61000-4-4 input lines
Surge voltage on input EN 61000-4-5 + Æ -
Surge voltage on output EN 61000-4-5 + Æ -
Surge voltage on inhibit
input, ready- and buffering
contacts and PC-mode
selector
Conducted disturbance EN 61000-4-6 0.15-80MHz 10V Criterion A
*) Chassis ground connection earthed (grounded)
**) Tested with coupling clamp
Criterions:
A: DC-UPS shows normal operation behavior within the defined limits.
EMC Emission
Conducted emission IEC/CISPR 16-1-2, IEC/CISPR 16-2-1 input lines limits for DC power ports acc.
IEC/CISPR 16-1-2, IEC/CISPR 16-2-1 output lines limits for DC power ports acc.
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 Frequencies
Switching frequency 1 100kHz Boost Converter (active only in buffer mode)
Switching frequency 2 78kHz Electronic output current limitation
Switching frequency 3 19.5kHz Charger
According generic standards: EN 61000-6-1 and EN 61000-6-2
8kV
air discharge *)
output lines
signals **)
+ / - Æ chassis ground
+ / - Æ chassis ground
EN 61000-4-5 signals Æ chassis ground 1kV Criterion A
According generic standards: EN 61000-6-3 and EN 61000-6-4
The unit has two converters with two different switching frequencies and one switchmode current limiter included.
15kV
2kV
2kV
2kV
500V
1kV
500V
1kV
EN 61000-6-3 fulfilled
EN 61000-6-3 fulfilled
Criterion A
Criterion A
Criterion A
Criterion A
Criterion A
Criterion A
Criterion A
Criterion A
Criterion A
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
16/27
Page 17
UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
16. ENVIRONMENT
Operational temperature
Storage 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
Shock 30g 6ms, 20g 11ms
Altitude 0 to 6000m (0 to 20 000ft) Approvals apply only up to 2000m
Over-voltage category II IEC 62103, EN 50178, EN 60950, UL 840
Degree of pollution 2 IEC 62103, EN 50178, not conductive
LABS compatibility The unit does not release any silicone or other LABS-critical substances and is suitable for
*) 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
***) Higher levels allowed when using the wall mounting bracket ZM2.WALL
Fig. 16-1 Output current vs. ambient temp.
Allowable Output Current
15A
12.5
10.0
7.5
5.0
2.5
0
-40 0 +40
Ambient Temperature
*) -40°C to +60°C (-40°F to 140°F)
***)
2 hours / axis
***)
3 bumps / direction, 18 bumps in total
use in paint shops.
+60°C
IEC 60068-2-6
IEC 60068-2-27
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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17/27
Page 18
UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
17. PROTECTION FEATURES
Output protection Electronically protected against overload, no-load and short-circuits
Output over-voltage protection
in buffer mode
Degree of protection IP 20 EN/IEC 60529
Penetration protection > 3.5mm e.g. screws, small parts
Over-temperature protection included Output shuts down with automatic restart
Input over-voltage protection - Max. 35Vdc, no harm or defect of the unit
Internal input fuse included Non user replaceable
Internal capacitor fuse included Non user replaceable
Overcharging of capacitors included The capacitors are permanently monitored. In case of a
Balancing of capacitors included An active balancing circuit ensures uniform capacitor
Failing of one or more
capacitor in the capacitor-string
Temperature of capacitors included Indicated by the diagnosis LED, ready contact open
Internal errors (broken wires,
…)
*) In case of a protection event, audible noise may occur.
typ. 32Vdc
max. 35Vdc
included Ready contact open, moving light pattern on the three
included Charging is stopped, ready contact open, moving light
In case of an internal DC-UPS defect, a redundant
circuit limits the maximum output voltage. The output
shuts down and automatically attempts to restart.
For use in a controlled environment according to CSA
22.2 No 107.1-01.
The tripping of this fuse is caused by an internal defect.
In such cases, send unit to the factory for inspection.
The tripping of this fuse is caused by an internal defect.
In such cases, send unit to the factory for inspection.
too high charging voltage, the charger will be switched
off with redundant protection measures.
voltages. If necessary, the charging current will be
reduced to a safe value.
LEDs
pattern on the three LEDs
*)
18. SAFETY FEATURES
Output voltage SELV IEC/EN 60950-1,
The input must be powered from a SELV power source.
Class of protection III PE (Protective Earth) connection not required
Isolation resistance > 5MOhm
Dielectric strength 500Vac
Touch current (leakage current) The leakage current which is produced by the DC-UPS itself depends on the input
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
PELV IEC/EN 60204-1, EN 50178, IEC 62103, IEC 60364-4-41,
The input must be powered from a PELV power source.
Power port to signal port
> 800kOhm
> 5MOhm
500Vac
voltage ripple and need to be investigated in the final application. For a smooth DC
input voltage, the produced leakage current is less than 100A.
Power port to housing
Signal port to housing
Power port to signal port
Power port / signal port to housing
18/27
www.pulspower.com Phone +49 89 9278 0 Germany
Page 19
Q.
UC10.241, UC10.242
UC-Series
19. APPROVALS
EC Declaration of Conformity
IEC 60950-1
2nd Edition
UL 508
UL 60950-1
nd
Edition
2
ANSI / ISA 12.12.01-2007
Class I Div 2
EN 60079-0, EN 60079-15
ATEX
IEC 60079-0, IEC 60079-15
EAC TR Registration
(only for CP10.241)
IND. CONT. E
II 3G Ex nA nC II T4 Gc
IECEx
24V, 15A, CAPACITOR-BASED DC-UPS
The CE mark indicates conformance with the
- EMC directive and the
- RoHS directive.
CB Scheme,
Information Technology Equipment
Applicable for altitudes up to 2000m.
Listed for use as Industrial Control Equipment;
U.S.A. (UL 508) and Canada (C22.2 No. 107-1-01);
E-File: E198865
Recognized for use as Information Technology Equipment,
Level 5; U.S.A. (UL 60950-1) and Canada (C22.2 No. 60950-1);
E-File: E137006
Applicable for altitudes up to 2000m.
Recognized for use in Hazardous Location Class I Div 2 T4
Groups A,B,C,D systems; U.S.A. (ANSI / ISA 12.12.01-2007) and
Canada (C22.2 No. 213-M1987)
Approval for use in hazardous locations Zone 2 Category 3G.
Number of ATEX certificate: EPS 15 ATEX 1 025 X
The power supply must be built-in in an IP54 enclosure.
Suitable for use in Class 1 Zone 2 Groups IIa, IIb and IIc
locations. Number of IECEx certificate: IECEx EPS 15.0049X
Registration for the Eurasian Customs Union market
(Russia, Kazakhstan, Belarus)
20. ROHS, REACH AND OTHER FULFILLED STANDARDS
RoHS Directive
REACH Directive
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
Directive 2011/65/EU of the European Parliament and the
Council of June 8
certain hazardous substances in electrical and electronic
equipment.
Directive 1907/2006/EU of the European Parliament and the
Council of June 1
Evaluation, Authorisation and Restriction of Chemicals
(REACH)
th
, 2011 on the restriction of the use of
st
, 2007 regarding the Registration,
19/27
Page 20
UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
21. PHYSICAL DIMENSIONS AND WEIGHT
Weight UC10.241: 1150g / 2.54lb
UC10.242: 1720g / 3.79lb
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 unit depth (127mm) to calculate the total required
installation depth.
Installation Clearances See chapter
Fig. 21-1 Front view UC10.241 Fig. 21-2 Front view UC10.242
XX2XX
Fig. 21-3 Side view
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
20/27
Page 21
UC10.241, UC10.242
UC-Series
22. ACCESSORIES
22.1. ZM2.WALL – WALL-MOUNTING BRACKET
This bracket is used to mount the DC-UPS
onto a flat surface without utilizing a DIN-Rail.
24V, 15A, CAPACITOR-BASED DC-UPS
UC10.241 UC10.242
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
21/27
Page 22
UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
23. APPLICATION NOTES
23.1. EXTERNAL INPUT PROTECTION
The DC-UPS is tested and approved for branch circuits up to 50A. An external protection is only required, if the
supplying branch has an ampacity greater than this. 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 20A B- or C-Characteristic
breaker should be used.
Check also local codes and local requirements. In some countries local regulations might apply.
23.2. OUTPUT CIRCUIT BREAKERS
The output of the DC-UPS is equipped with an electronic current limitation. An overload or short-circuit on the output
is electronically protected and cannot cause any harms, independent of which sizes of power supplies are used on the
input of the DC-UPS.
However, some applications require branch circuit or branch circuit conductor protection. Therefore standard
miniature circuit breakers (MCB’s or UL 1077 circuit breakers) are commonly used on 24V branches.
MCB’s 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 24V 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 PLC's. This requires high peak currents to open the circuit breaker in the required time.
Furthermore, the impedance of the faulty branch must be sufficiently small in order for the current to actually flow.
The following table has typical test results showing which C-Characteristic MCBs magnetically trip depending on the
wire cross section and wire length.
DC-UPS
Output
*) Don’t forget to consider twice the distance to the load (or cable length) when calculating the total wire length (+ and – wire).
Fig. 23-1 Test circuit
MCB
+
Wire length
-
S1... Fault simulation switch
Load
+
S1
-
Maximal wire length
C-2A
C-3A
C-4A
0.75mm² 1.0mm² 1.5mm²
*)
for a fast (magnetic) tripping:
2.5mm²
20m 25m 39m 58m
12m 14m 24m 39m
3m 3m 4m 4m
23.3. PARALLEL USE TO INCREASE OUTPUT CURRENT
Do not use the DC-UPS in parallel to increase the output power.
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
22/27
Page 23
UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
23.4. PARALLEL USE FOR REDUNDANCY
Two DC-UPSs can be paralleled to build a 1+1 redundant system to gain higher system reliability.
Recommendations for building redundant power systems:
a) Use separate input fuses for each power supply.
b) Set the power supply into “Parallel use” mode if available.
c) Use a redundancy module to decouple the two power sources.
d) Monitor the individual sources. Therefore, use the alarm contacts of the YRM2.DIODE redundancy module.
(The YRM2.DIODE is suitable for a 10A redundant system)
e) It is desirable to set the output voltages of all power supplies to the same value (± 100mV) or leave it at the
factory setting.
Fig. 23-2 Wiring example for a fully redundant system,
redundant power supplies and redundant DC-UPSs
+ +
24V Output
- -
++
-
-
IN OUT
+ +
24V Output
- -
++
-
-
IN OUT
+
IN 1
-
+
IN 2
-
IN 1 IN 2
Failure
Monitor
Ready
UC10
DC-UPS
Buffering
+
Inhibit
-
PC Mode
Power
Supply
Power
Supply
Ready
UC10
DC-UPS
Buffering
+
Inhibit
-
PC Mode
Ready
Buffering
Inhibit
YRM2.DIODE
OUT
+
-
23.5. PARALLEL USE FOR LONGER BUFFER TIMES
DC-UPSs can be paralleled to extend the buffer time.
Fig. 23-3 Wiring example for parallel use for longer buffer times
+ +
- -
24V Output
Power
Supply
++
-
-
IN OUT
UC10 UC10 UC10
DC-UPS
++
-
-
IN OUT
DC-UPS
++
-
-
IN OUT
DC-UPS
+
Load
-
Load
+
-
Inhibit
Ready
Buffering
PC Mode
+
-
Inhibit
Ready
Buffering
PC Mode
+
-
Inhibit
Ready
Buffering
PC Mode
+
-
Ready
Buffering
Inhibit
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
23/27
Page 24
UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
23.6. SERIES USE FOR 48V APPLICATIONS
A series connection for 48V applications is allowed when utilizing two individual power supplies and two DC-UPSs.
Fig. 23-4 Wiring example for 48V serial use
+ +
24V Output
- -
++
-
-
IN OUT
Ready
UC10
DC-UPS
Buffering
+
Inhibit
-
Power
Supply
PC Mode
+ +
24V Output
Power
Supply
- -
++
-
-
IN OUT
UC10
DC-UPS
Ready
Buffering
+
Inhibit
-
PC Mode
+
48V
Load
-
23.7. USING THE INHIBIT-INPUT
The inhibit-input disables buffering. In normal mode, a static signal is required. In buffer mode, a pulse with a
minimum length of 250ms is required to stop buffering. The inhibit signal is stored and can be reset by cycling the
input voltage.
For service purposes, the inhibit input can also be used to connect a service switch. Therefore, the inhibit signal can be
supplied from the output of the DC-UPS.
Fig. 23-5 Wiring example for inhibit input
+
-
24V
Power
Supply
+-+
UC10
DC-UPS
y
d
a
e
B
R
-
OUTIN
g
e
n
i
d
t
r
i
o
e
b
f
i
M
f
h
u
C
n
I
P
+
-
+
Buffered
Load
Service
Switch
-
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
24/27
Page 25
UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
23.8. EXTERNAL CONTROLLED DELAYED SHUT-DOWN
If the reset is supposed to be controlled by the PC or another external trigger and not the DC-UPS, the following
wiring option is possible but requires an external relay:
Fig. 23-6 Wiring scheme for an external controlled reset after a buffer event
Load
+
-
+ +
- -
24V Output
Power
Supply
++
-
-
IN OUT
UC10
DC-UPS
Inhibit
Ready
Buffering
PC Mode
+
-
Relay
with NC
contact
External signal to start
the delayed shut-down
PC-Mode
Power Supply Output
Inhibit Input
DC-UPS Output
Capacitor
Ready
Contact
Buffering
Contact
connected
closed
open
closed
open
Pin 7 & 8
Pin 7 & 8
open
full
empty
Ready Threshold
unit is in "waiting mode" for
a trigger on the inhibit input
<1s
>250ms
250ms
70s
5s
Activation of the “external control mode”:
The PC-Mode pins need to be connected together during a normal mode operation. This connection must be opened
within the first second of a buffer event to set the DC-UPS into the “external control mode”. In this mode, a signal on
the inhibit input will not immediately execute a shut-down of the DC-UPS’s output but will be delayed by 70s. The
output of the DC-UPS will always be switched off for at least 5s.
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
25/27
Page 26
C*U
E
F
V
EtW
UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
23.9. WHAT DO KJ AND KWS MEAN?
The units kJ (kilo Joule) or kWs (kilo Watt seconds) is used for specifying the installed storage capacitor size.
1 kJ = 1 kWs = 1000Ws
The stored energy of a capacitor can be calculated with the following formula:
2
2
− U22)
* 120
2
=
1093
=
=
1
Ws
350 * (2.5
=
5400
s
. 09
2−12
Ws
kWs
)
= 919Ws = 0.92kWs
=
5 .4
kWs
Always check with the buffer time curve (see Fig. 6-1) if the load
Energy ( Ws
For example: A 350F (Farad) capacitor which is charged to 2.5V has the following energy
350
=
During discharging of the capacitor, the voltage decreases with the amount of discharge. A boost converter is needed
to generate a stable output voltage. The boost converter needs a minimum input voltage (cut-off voltage), which
reduces the amount of energy. The cut-off voltage usually depends on the load current, the lower the load current,
the lower the cut-off voltage.
Considering this voltage range, the energy can be calculated with the following formula (full charge voltage= U1=
2.5V, cut-off voltage= U2= 1V):
C *(U1
E =
=
)
* 2 . 5
2
2
2 2
The energy which can be used for the 24V loads is further reduced by the efficiency of the boost converter.
The UC10.241 has a rated capacitor size of 6kWs and the UC10.242 12kWs. This is the energy which can be used for
24V load at low load currents.
Calculation of the needed energy:
Example: A power of 45W is needed for 2 minutes:
=
45
*
= P
can be powered for the required period of time!
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
26/27
Page 27
UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
23.10. TROUBLESHOOTING
The following guidelines provide instructions for fixing the most common failures and problems. Always start with the
most likely and easiest to check condition. Some of the suggestions may require special safety precautions. See notes in
section 2 first.
Symptom: Action:
“Check input voltage” LED is on - Check input voltage (must be between 22.8V and 30V)
DC-UPS did not buffer - Inhibit input was set.
- Capacitor did not have enough time to be charged.
DC-UPS stopped buffering - Capacitor was discharged.
- Capacitor did not have enough time to be charged.
- Inhibit was activated
- PC-mode was activated
Output has shut down in normal mode - Over-temperature protection might have triggered. Let the DC-UPS
cool down.
- PC-mode was activated (if not longer than 5s)
DC-UPS constantly switches between
normal mode and buffer mode
The supplying source on the input is too small and can not deliver
sufficient current. Use a larger power supply or reduce the output load
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
27/27
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