Puls UBC10.241, UBC10.241-N1 Data Sheet
Q.
1. G
This uninterruptible power supply (UPS) controller
UBC10.241 with integrated battery is a compact
addition to standard 24V power supplies to bridge
power failures or voltage fluctuations. Expensive
downtimes, long restart cycles and loss of data can
be avoided.
The DC-UPS includes a professional battery
management system which charges and monitors
the battery to achieve the longest battery service life
as well as many diagnostic functions that ensure a
reliable operation of the entire system.
A unique feature of the UBC10.241 is that only one
12V battery is required to buffer the 24V output.
This makes matching batteries unnecessary and
allows a precise battery charging and testing.
The UBC10.241 has one integrated 12V 5Ah high
current VRLA battery, which is easy to change.
In addition to the UBC10.241, a separate UPS
controller (UB10.241) which requires an external 12V
battery is available when a longer buffer time is
required.
ENERAL DESCRIPTION
U–Series
UBC10.241, UBC10.241-N1
24V, 10A, DC-UPS
DC-UPS
Compact and Easy to Install
■
■
Longest Buffer Time in Class
■
Easy Battery Access
Stable Output Voltage in Buffer Mode
■
Superior Battery Management for Longest Battery Life
■
■
Temperature Compensated Battery Charging
■
Comprehensive Diagnostics and Monitoring Functions
■
Replace Battery Signal Included
■
Electronically Overload and Short Circuit Protected
50% Power Reserves
■
■
Selectable Buffer Time Limiter
2. S
Input voltage nom. 24Vdc
range 22.5-30Vdc
Output current min. 15A Normal mode
min. 10A Buffer mode
Output voltage typ. 0.23V lower
22.25V Buffer mode, 10A
Integrated battery 12V 5Ah VRLA lead acid
Temperature range 0 to 40°C Operational
Dimensions 123x124x119mm WxHxD
Buffer time typ. 16’15” At 5A load
typ. 6’15” At 10A load
Typical setup of a DC-UPS system with the UBC10.241:
WITH INTEGRATED BATTERY
24V
DC-UPS
HORT-FORM DATA
as input voltage
AC
24V
Power
Supply
e.g.:
Dimension
UBC10.241
Normal mode
24V
Load
e.g.: PLC
DC
3. O
DC-UPS
UBC10.241-N1
Accessories UZB12.051
RDER NUMBERS
UBC10.241
May. 2008 / Rev. 1.1 DS-UBC10.241-EN
All parameters are specified at an input voltage of 24V, 10A output load, 25°C ambient and after a 5 minutes run-in time
unless otherwise noted. It is assumed that the input power source can deliver a sufficient output current.
Standard unit
Battery not assembled
Battery 12V 5Ah
4. M
CUS
ARKINGS
IND. CONT. E
UL 508
R
182790
UL 60950-1
GL
Marine
Class I Div 2
EMC, LVD
1/23
NDEX
I
1. General Description ............................................1
2. Short-form Data ..................................................1
3. Order Numbers....................................................1
4. Markings..............................................................1
5. Input ....................................................................3
6. Output in Normal Mode .....................................4
7. Output in Buffer Mode.......................................5
8. Battery Input .......................................................6
9. Buffer Time..........................................................7
10. Efficiency and Power Losses................................8
11. Functional Diagram.............................................8
12. Check Wiring and Battery Quality Tests.............9
13. Relay Contacts and Inhibit Input......................10
14. Front Side User Elements ..................................12
15. Terminals and Wiring........................................13
16. Reliability...........................................................13
P
U–Series
AGE
I
UBC10.241, UBC10.241-N1
24V, 10A, DC-UPS
NDEX
17. EMC ................................................................... 14
18. Environment ..................................................... 15
19. Protection Features .......................................... 15
20. Safety ................................................................ 16
21. Approvals.......................................................... 16
22. Fulfilled Standards............................................ 16
23. Used Substances ............................................... 17
24. Physical Dimensions and Weight..................... 17
25. Installation Notes ............................................. 18
26. Replacement of the battery............................. 19
27. Accessories ........................................................ 20
28. Application Notes............................................. 21
P
28.1. Battery Replacement Intervals............... 21
28.2. Parallel and Serial Use............................ 22
28.3. Using the Inhibit Input........................... 23
28.4. Troubleshooting..................................... 23
AGE
NTENDED USE
I
The unit shall only be installed and put into operation by qualified personnel.
This unit is designed for installation in an enclosure and is intended for 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.
T
ERMINOLOGY AND ABREVIATIONS
DC-UPS Uninterruptible power supply with DC-Input.
Normal mode Describes a condition where the battery is charged, the input voltage is in range and the output is
Buffer mode Describes a condition where the input voltage is below the transfer threshold level, the unit is
Charging mode Describes a condition where the battery is being charged, the input voltage is in range and the
Inhibit mode Describes a condition where buffering is disabled on purpose by using the inhibit input of the DC-
Buffer time Same as the term “hold-up time”.
T.b.d. To be defined, value or description will follow later.
ISCLAIMER
D
The information presented in this document is believed to be accurate and reliable and may change without notice.
Some parts of this unit are patent by PULS (US patent No 091662,063, Des. 424,529, …).
No part of this document may be reproduced or utilized in any form without permission in writing from the publisher.
loaded within the allowed limits.
running on battery (buffering) and the output is loaded within the allowed limits.
output is loaded within the allowed limits.
UPS. (e.g. for service actions, or to save battery capacity)
May. 2008 / Rev. 1.1 DS-UBC10.241-EN
All parameters are specified at an input voltage of 24V, 10A output load, 25°C ambient and after a 5 minutes run-in time
unless otherwise noted. It is assumed that the input power source can deliver a sufficient output current.
2/23
U–Series
UBC10.241, UBC10.241-N1
24V, 10A, DC-UPS
NPUT
5. I
Input voltage nom. DC 24V
Input voltage ranges nom. 22.5 to 30Vdc Continuous operation, see Fig. 5-1
30 to 35Vdc Temporarily allowed, no damage to the DC-UPS *)
35Vdc Absolute maximum input voltage with no damage to the
0 to 22.5Vdc The DC-UPS switches into buffer mode and delivers
DC-UPS
output voltage from the battery if the input was above
the turn-on level before and all other buffer conditions
are fulfilled.
Allowed input voltage ripple
max. 1.5Vpp Bandwidth <400Hz
1Vpp Bandwidth 400Hz to 1kHz
Allowed voltage between input
and earth (ground)
Turn-on voltage typ. 22.8Vdc The output does not switch on if the input voltage does
max. 60Vdc or
42.4Vac
not exceed this level.
max. 23Vdc
Input current **) typ. 120mA Internal current consumption
typ. 1.1A Current consumption for battery charging in constant
current mode at 24V input See Fig. 8-2 ***)
External capacitors on the input No limitation
*) The DC-UPS shows “Check Wiring” with the red LED and buffering is not possible
**) The total input current is the sum of the output current, the current which is required to charge the battery during the
charging process and the current which is needed to supply the DC-UPS itself. See also Fig. 5-2. This calculation does not apply
in overload situations where the DC-UPS limits the output current, therefore see Fig. 5-3.
***) Please note: This is the input current and not the current which flows into the battery during charging. The battery current can
be found in chapter 8.
Fig. 5-1 Input voltage range Fig. 5-2 Input current, definitions
V
OUT
D
AB
C
Input
Current
Output
Current
18 30 35V22.50
A: Rated input voltage range
B: Temp. allowed, no harm to the unit
C: Absolute max. input voltage
D: Buffer mode
V
IN
Internal
current
consumption
Current
consumption
for battery
charging
Electronic output current limitation
The DC-UPS is equipped with an electronic output
current limitation. This current limitation works
in a switching mode which reduces the power
losses and heat generation to a minimum. As a
result, the output voltage drops since there is not
enough current to support the load. A positive
effect of the current limitation in switching mode
is that the input current goes down despite an
increase in the output current resulting in less
stress for the supplying source.
May. 2008 / Rev. 1.1 DS-UBC10.241-EN
All parameters are specified at an input voltage of 24V, 10A output load, 25°C ambient and after a 5 minutes run-in time
unless otherwise noted. It is assumed that the input power source can deliver a sufficient output current.
Fig. 5-3 Input current and output voltage vs.
output current, typ. (battery fully charged)
20V
10
20A
15
10
5
0
Output Voltage
e
r
r
u
C
t
u
p
n
I
O
t
p
u
u
t
C
u
r
r
0
4812 20A
n
e
Overload
t
n
t
15
3/23
U–Series
UBC10.241, UBC10.241-N1
24V, 10A, DC-UPS
6. O
UTPUT IN NORMAL MODE
Output voltage in normal mode
Voltage drop between input and
output
nom. DC 24V The output voltage follows the input voltage reduced by
the input to output voltage drop.
max. 0.3V At 10A output current, see Fig. 6-1 for typical values
max. 0.45V At 15A output current, see Fig. 6-1 for typical values
Ripple and noise voltage max. 20mVpp 20Hz to 20MHz, 50Ohm *)
Output current nom. 15A Continuously allowed
Output power nom. 360W Continuously allowed
Short-circuit current min. 17.9A Load impedance 100mOhm, see Fig. 6-2 for typical values
max. 21A Load impedance 100mOhm, see Fig. 6-2 for typical values
Capacitive and inductive loads No limitation
*) This figure shows the ripple and noise voltage which is generated by the DC-UPS. The ripple and noise voltage
might be higher if the supplying source has a higher ripple and noise voltage.
Fig. 6-1 Input to output voltage drop, typ.
Input to Output
Voltage drop
0.4V
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
02 10
468 121416
p
u
t
u
O
t
n
e
r
r
u
C
t
18A
Fig. 6-2 Output voltage vs. output current in
normal mode at 24V input, typ.
Output Voltage
28V
24
20
16
12
8
4
0
0 5 10 15 20
Output Current
25A
May. 2008 / Rev. 1.1 DS-UBC10.241-EN
All parameters are specified at an input voltage of 24V, 10A output load, 25°C ambient and after a 5 minutes run-in time
unless otherwise noted. It is assumed that the input power source can deliver a sufficient output current.
4/23
A
U–Series
UBC10.241, UBC10.241-N1
24V, 10A, DC-UPS
7. O
UTPUT IN BUFFER MODE
If the input voltage falls below a certain value (transfer threshold level), the DC-UPS starts buffering without any
interruption or voltage dips. Buffering is possible even if the battery is not fully charged.
Output voltage in buffer mode nom. DC 24V Output voltage is stabilized and independent from
22.45V ±1%, at no load,
battery voltage
22.25V ±1%, at 10A output current
Transfer threshold for buffering
typ. 80mV higher than the output voltage in buffer mode
Ripple and noise voltage max. 20mVpp 20Hz to 20MHz, 50Ohm
Output current nom. 10A Continuously allowed
15A < 5s with full output voltage *)
Short-circuit current min. 17.9A Load impedance 100mOhm **)
max. 21A Load impedance 100mOhm **)
*) If the output current is in the range between 10A and 15A for longer than 5s, a hardware controlled reduction of the
maximal output current to 10A occurs. If the 10A are not sufficient to maintain the 24V, buffering stops after another 5s. The
buffering is possible again as soon as the input voltage recovers.
**) If the nominal output voltage cannot be maintained in buffer mode, the DC-UPS switches off after 5s to save battery
capacity.
Fig. 7-1 Buffering transition, definitions Fig. 7-2 Transfer behavior, typ.
O
u
t
p
u
Input
voltage
28V
24V
Transfer
threshold
4
2
V
2
2
.
5
2
V
a
t
1
0
A
t
o
V
a
l
t
g
e
4
2
V
t
Output
voltage
t
e
l
a
g
o
t
u
V
n
I
Buffer mode
0
t
V
p
V
I
m
/
s
D
5
0
0
Fig. 7-3 Available output current in buffer
Output
Current
15A
10A
mode
BonusPower
5A
0
05 Sec.
®
Time
Fig. 7-4 Output voltage vs. output current in
Output Voltage
25V
20
15
10
5
0
0
Continuously available
A
Available for 5s then auto switching to curve
B
Buffering will stop after 5s
C
D
Buffering will stop after 5s
buffer mode, typ.
A B
CD
Output
Current
5101520
25
D
May. 2008 / Rev. 1.1 DS-UBC10.241-EN
All parameters are specified at an input voltage of 24V, 10A output load, 25°C ambient and after a 5 minutes run-in time
unless otherwise noted. It is assumed that the input power source can deliver a sufficient output current.
5/23
U–Series
UBC10.241, UBC10.241-N1
24V, 10A, DC-UPS
8. B
ATTERY
The required 12V VRLA battery is included with this unit. For more details on battery requirements see chapter 26.
Battery voltage nom. DC 12V Maintenance-free 12V VRLA lead acid battery.
Battery voltage range 9.0 – 15.0V Continuously allowed, except deep discharge
max. 35Vdc Absolute maximum voltage with no damage to the
protection
unit.
typ. 7.4V Above this voltage level battery charging is possible
Allowed battery capacity nom. 5Ah High-current version
Battery charging method CC-CV Constant current, constant voltage mode
Battery charging current nom. 1.5A CC-mode, Independent from battery size
max. 1.7A Corresponding 24V input current see Fig. 8-2
End-of-charge-voltage (CV-mode) typ. 13.1 - 14V Automatic setting according to ambient temperature
Battery charging time typ. 3h *)
Battery discharging current **) typ. 21A Buffer mode, 10A output current, 11.5V on the battery
terminal of the DC-UPS, see Fig. 8-1 for other
parameters
typ. 0.3A Buffer mode, 0A output current
max. 50μA At no input, buffering had switched off, all LEDs are
typ. 270mA At no input, buffering had switched off, yellow LED
off
shows “buffer time expired” (max. 15 minutes)
Deep discharge protection ***) typ. 10.5V At 0A output current
typ. 9.0V At 10A output current
*) The charging time depends on the duration and load current of the last buffer event. The numbers in the table represent a
fully discharged battery. A typical figure for a buffer current of 10A is 2h 20Min. for a 5Ah highcurrent battery. Above 40°C
charging time can be longer.
**) The current between the battery and the DC-UPS is more than twice the output current. This is caused by boosting the 12V
battery voltage to a 24V level.
***) To ensure longest battery lifetime, the DC-UPS has a battery deep discharge protection feature included. The DC-UPS stops
buffering when the voltage on the battery terminals of the DC-UPS falls below a certain value.
Battery Current
30A
Fig. 8-1 Battery discharging current
vs. output current, typ.
25
20
15
10
5
0
0
2.5 7.5 10 15A12.55
O
t
p
u
u
t
C
u
Voltage on
battery terminal
of the DC-UPS:
A:
10.5V
B:
11V
C:
12V
r
r
e
n
t
A B C
Fig. 8-2 Required input current vs. input
voltage for battery charging
Input Current
1.5A
1.25
1.0
m
a
x
.
(
b
a
t
t
e
r
y
c
ha
r
g
i
n
g
c
u
r
r
e
t
y
p
.
(
ba
t
t
e
r
y
c
h
a
r
g
n
i
n
g
c
ur
r
e
0.75
0.5
0.25
0
23
I
n
p
u
V
o
t
a
t
l
g
e
24 25 26 28V
27
t
1
.
7
A
)
n
t
1
.
5
A
)
May. 2008 / Rev. 1.1 DS-UBC10.241-EN
All parameters are specified at an input voltage of 24V, 10A output load, 25°C ambient and after a 5 minutes run-in time
unless otherwise noted. It is assumed that the input power source can deliver a sufficient output current.
6/23
U–Series
UBC10.241, UBC10.241-N1
24V, 10A, DC-UPS
9. B
UFFER TIME
The buffer time depends on the capacity and performance of the battery as well as the load current. The diagram
below shows the typical buffer times of the standard battery.
Buffer time with 5Ah high-current battery min. 13’24’’ At 5A output current *)
min. 4’54’’ At 10A output current *)
typ. 16’15’’ At 5A output current, see Fig. 9-1 **)
typ. 6’15’’ At 10A output current, see Fig. 9-1 **)
*) Minimum value includes 20% aging and requires a fully charged (min. 24h) battery.
**) Typical value includes 10% aging and requires a fully charged (min. 24h) battery.
Fig. 9-1
Buffer time vs. output current with a 5Ah high current battery
Buffer Current
10A
8
6
4
2
0
515
UZB12.051
12V 5Ah high current battery
Buffer Time (Minutes)
2010 25 30 35 45 5040 55 60 65 70 75 80 85
90
Min.
May. 2008 / Rev. 1.1 DS-UBC10.241-EN
All parameters are specified at an input voltage of 24V, 10A output load, 25°C ambient and after a 5 minutes run-in time
unless otherwise noted. It is assumed that the input power source can deliver a sufficient output current.
7/23
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