26.3. Using the Inhibit Input ..................... 24
26.4. Troubleshooting
................................. 24
.............. 19
....................... 23
Terminology and Abbreviations
•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 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 battery (buffering)
and the output is loaded within the allowed limits.
• Charging mode—Describes a condition where the battery 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 intentionally by using the inhibit input of the DC UPS (e.g. for service
actions or to save battery capacity).
•Buffer time—Equivalent to the term “hold-up time.”
• T.b.d.—To be defined, value or description will follow later.
...... 22
Bulletin 1606 Switched Mode Power Supplies
1.
Description
The 1606-XLS240-UPSD uninterruptible power
supply (UPS) controller along with a standard 24V
power supply and one 12V battery can bridge power
failures or voltage uctuations. This unit can supply
and bridge both a 24V load as well as a 12V load at
the same time. The 12V is generated by a DC/DC
converter from the 24V output. Therefore, systems that
use 24V control circuits and require 12V for e.g.
remote radio telemetry can be supplied with
only one 1606-XLS240-UPSD DC-UPS controller.
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.
AC
24V
Power
Supply
DC-UPS
Dual
output
1606XLS240UPSD
12V Battery
24VDC
e.g.: PLC
12VDC
24V
Load
12V
Load
e.g.: radio
transmitter
DC-UPS, Dual Output
■ 24V DC-UPS With an Additional 12V Output for
Various Applications
■ Only One 12V Battery Required
■ Stable Output Voltage in Buer Mode
■ Superior Battery Management for Longest Battery Life
■ Comprehensive Diagnostic and Monitoring Functions
■ Replace Battery Signal Included
■ Electronically Overload and Short Circuit Protected
■ 50% Power Reserves
■ 3 Year Warranty
2.
Specication Quick Reference
Input voltage 24Vdc Nominal
22.5-30Vdc Input range
Output voltage
(normal mode)
12V 12V output
Output voltage
(buer mode)
Output current
(normal mode)
Output current
(buer mode)
Total output
power
0.23V lower as
input voltage
22.25V
12V
0 - 15A
0 - 5A
0 - 10A
10 – 15A for 5s
0 - 5A
360W
240W
Typ., 24V output
24V output at 10A
12V output at 5A
24V output
12V output
24V output
24V output
12V output
Normal mode
Buer mode
Allowed batteries 3.9Ah to 40Ah VRLA lead acid
Temperature range -25 to +70°C Operational
Derating 6W/°C +50 to +70°C
Dimensions 49x124x117mm WxHxD
Buer time
typ. 6’30” 7Ah battery module
24V 7A, 12V 5A
typ. 54’ 26Ah module
24V 7A, 12V 5A
3.
Catalog Numbers
DC-UPS 1606-XLS240-UPSD24V and 12V output
Accessories
2Rockwell Automation Publication 1606-RM017A-EN-P — February 2014
1606-XLSBATASSY1
1606-XLSBATBR1
1606-XLSBATASSY2
1606-XLSBARBR2
1606-XLB
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 noted otherwise.
Battery module 12V 7Ah
Mounting kit w/o battery
Battery module 12V 26Ah
Mounting kit w/o battery
Panel/Wall mount bracket
It is assumed that the input power source can deliver a sufficient output current.
4.
Certication Marks
IND. CONT. EQ.
UL 508
Marine RINA
UL 60950-1
GOST R
EMC, LVD
C-TICK
Bulletin 1606 Switched Mode Power Supplies
Intended Use
• This device is designed for installation in an enclosure and is intended for the general professional use such as in industrial control, office,
communication, and instrumentation equipment.
• Do not use this power supply in aircraft, trains, nuclear equipment or similar systems where malfunction may cause severe personal injury or
threaten human life.
• This device is designed for use in hazardous (pending), non-hazardous, ordinary or unclassified locations.
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
Rockwell Automation Publication 1606-RM017A-EN-P — February 20143
Bulletin 1606 Switched Mode Power Supplies
5. Input
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
DC-UPS
0 to 22.5Vdc The DC-UPS switches into buer mode and delivers
output voltage from the battery if the input was above
the turn-on level before and all other buer conditions
are fullled.
Allowed input voltage ripple
max. 1.5Vpp Bandwidth <400Hz
1Vpp Bandwidth 400Hz to 1kHz
Allowed voltage between input
and earth (ground)
max. 60Vdc or
42.4Vac
Turn-on voltage
typ. 22.8Vdc The output does not switch on if the input voltage does
not exceed this level.
max. 23Vdc
Input current **)
typ. 140mA Internal current consumption for the DC-UPS
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 buering 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 need ed 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 ows into the battery during charging. The battery current can
be found in section 8.
Fig. 5-1 Input voltage rangeFig. 5-2 Input current, denitions
A: Rated input voltage range
B: Temp. allowed, no harm to the unit
C: Absolute max. input voltage
D: Buffer mode
V
IN
183035V22.50
AB
C
D
V
OUT
Internal
current
consumption
Current
consumption
for battery
charging
Output
Current
Input
Current
Fig. 5-3 Input current and output voltage vs.
output current, typ. (battery fully charged)
Electric 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
eect 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. Fig 5-3 shows the
behavior when the 12V is not loaded. Power which
is taken out from the 12V reduces the power on
the 24V side.
0
0
5
10
15
20A
O
u
t
p
u
t
C
u
r
r
e
n
t
4812
20A
Output Voltage
15
20V
Overload
I
n
p
u
t
C
u
r
r
e
n
t
10
4Rockwell Automation Publication 1606-RM017A-EN-P — February 2014
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
6. Output in Normal Mode
The total output power of 360W can be shifted dynamically between the two outputs.
24V Output:
nom. DC 24V The output voltage follows the input voltage reduced by the
input to output voltage drop.
Output voltage
Voltage drop between input and
output
max.
max.
0.3V
0.45V
At 10A output current, see Fig. 6-1 for typical values
At 15A output current, see Fig. 6-1
for typical values
Ripple and noise voltage max. 20mVpp 20Hz to 20MHz, 50Ohm *)
Output current nom. 0 – 15A Continuously allowed, lower if the 12V output is loaded.
min. 12.3A Output if 12V
output is loaded with 5A.
Short-circuit current min. 17.9A Load impedance 100mOhm, see Fig. 6-2 for typical values. The
12V output is o during an overload or short on the 24V.
max. 21A
Capacitive and inductive loads
No limitation
12V Output:
nom. DC 12V
Output voltage
Output voltage tolerance
±2%
Ripple and noise voltage typ. 30mVpp 20Hz to 20MHz, 50Ohm *)
nom. 0 - 5A Continuously allowed, may be lower if the 24V output is loaded
more than 12.3A
Output current
Short-circuit current min.
4A
Load impedance 100mOhm, see Fig. 7-5. for typical values.
The 24V output is on during an overload or short on the 12V.
max. 5.5A
Capacitive and inductive loads
No limitation
*) This gure shows the ripple and noise voltage which is generated by the DC-UPS. The ripple and noise voltage may be
higher if the supplying source has a higher ripple and noise voltage.
Fig. 6-2 Output voltage vs, output current in
normal mode at 24V input, typ.
Fig. 6-1 Input to output voltage drop, typ.
Input to Output
Voltage drop
0
0210
0.1
0.15
0.25
18A
0.05
0.2
0.3
0.35
0.4V
O
u
t
p
u
t
C
u
r
r
e
n
t
468 121416
Output Voltage
0
05101520
4
8
12
28V
16
20
24
25A
Output Current
Bulletin 1606 Switched Mode Power Supplies
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
Rockwell Automation Publication 1606-RM017A-EN-P — February 20145
Bulletin 1606 Switched Mode Power Supplies
7. Output in Buer Mode
If the input voltage falls below the transfer threshold level, the DC-UPS starts buering without any interruption or
voltage dips. The transfer threshold level is typically 80mV higher than the 24V output voltage in buer mode.
Buering is possible even if the battery is not fully charged.
24V Output
Output voltage
nom. DC 24V Output is stabilized and independent from battery voltage.
22.45V ±1%, at no load,
22.25V ±1%, at 10A output current
Ripple and noise voltage max. 20mVpp 20Hz to 20MHz, 50Ohm
Output current nom. 0 - 10A Continuously allowed, 12V output not loaded.
10 - 15A *) 12V output not loaded.
min. 7.0A If 12V output is loaded with 5A.
Short-circuit current min. 17.9A Load impedance 100mOhm **); the 12V output is o during an
overload or short on the 24V.
max. 21A
12V Output
Output voltage
nom. DC 12V Output is stabilized and independent from battery voltage.
Output voltage tolerance
±2%
Ripple and noise voltage typ. 30mVpp 20Hz to 20MHz, 50Ohm ;
nom. 0 - 5A Continuously allowed, may be lower if the 24V output is loaded
more than 7.0A
Output current
Short-circuit current min. 4A Load impedance 100mOhm, see Fig. 7-5 for typical values.
Continuous constant; the 24V output is on during an overload
or short on the 12V as long as the battery delivers current.
max. 5.5A
*) If the output current is in the range between 10A and 15A (Bonus Power) for longer than 5s, a hardware-controlled
reduction of the maximal output current to 10A occurs. If the 10A are not sucient to maintain the 24V, buering stops at
both outputs after another 5s. Buering is possible again as soon as the input voltage recovers.
**) If the nominal output voltage cannot be maintained in buer mode, the DC-UPS switches o after 5s to save battery
capacity.
Fig. 7-1 Buering transition, denition
Fig. 7-2 Transfer behavior, typ.
Buer mode
Output
voltage
24V
28V
Input
voltage
t
t
Transfer
threshold
5
0
0
m
s
/
D
I
V
0
V
O
u
t
p
u
t
V
o
l
t
a
g
e
I
n
p
u
t
V
o
l
t
a
g
e
2
4
V
2
2
.
2
5
V
a
t
1
0
A
2
4
V
6Rockwell Automation Publication 1606-RM017A-EN-P — February 2014
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
Bulletin 1606 Switched Mode Power Supplies
Fig. 7-4 24V Output voltage vs. output current
in buer mode, typ.
Fig. 7-3 Available output current in buer mode
Output Voltage
A
B
C
Continuously available
Available for 5s then auto switching to curve
Buering will stop after 5s
D
0
0
5101520
5
10
15
25V
20
25
Output
Current
AB
CD
D
Buering will stop after 5s
Output
Current
0
05 Sec.
15A
10A
Time
5A
BonusPower
Fig. 7-5 12V Output voltage vs. output current
in normal or buer mode, typ.
Output Voltage
Output Current
01 2 3
0
2
4
6
14V
8
10
12
45 6 A
A
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
Rockwell Automation Publication 1606-RM017A-EN-P — February 20147
Bulletin 1606 Switched Mode Power Supplies
8.Battery Input
The DC-UPS requires one 12V VRLA battery to buer the 24V and 12V output.
Battery voltage nom. DC 12V Use one maintenance-free 12V VRLA lead acid battery or
one battery module which is listed in the Accessories
section.
9.0 – 15.0V Continuously allowed, except deep discharge protection
Battery voltage range
max. 35Vdc Absolute maximum voltage with no damage to the unit
typ. 7.4V Above this voltage level battery charging is possible.
Allowed battery sizes min. 3.9Ah
max. 40Ah
Internal battery resistance max. 100mOhm See individual battery datasheets for this value
Battery charging method
CC-CV Constant current, constant voltage mode
Battery charging current (CC-mode) nom. 1.5A Independent from battery size,
max. 1.7A Corresponding 24V input current see Fig. 8-2
End-of-charge-voltage (CV-mode)
13.4-13.9V Adjustable, see section 14
Battery charging time typ. 5h *) For a 7Ah battery
typ. 17h *) For a 26Ah battery
typ. 21A Buer mode, 240W output, 11.5V on the battery
terminal of the DC-UPS, see
Battery discharging current **)
Fig. 8-1 for other parameters
typ. 0.3A Buer mode, 0A output current
max. 50μ
A
At no input, buering had switched o, all LEDs are o
typ. 310mA At no input, buering had switched o, yellow LED
shows “buer time expired” (max. 15 minutes)
Deep discharge protection ***) typ. 10.5V At 0% output load
typ. 9.0V At 100% output load
*) The charging time depends on the duration and load current of the last buer event. The numbers in the table represent a
fully discharged battery. A typical gure for a buer current of 10A at 24V output is 3h 20Min. for a 7Ah battery.
**) The current between the battery and the DC-UPS is more than twice the 24V output current. This is caused by boosting the 12V
battery voltage to a 24V level.
This high current requires large wire gauges and short cable length for the longest possible
buer time. The higher the resistance of the connection between the battery and the DC-UPS, the lower the voltage on the
battery terminals which increases the discharging current. See also section 24 for additional installation instructions.
***) To ensure longest battery lifetime, the DC-UPS has a battery deep discharge protection feature included. The DC-UPS stops
buering when the voltage on the battery terminals of the DC-UPS fall below a certain value.
Fig. 8-1 Battery discharging current
vs. 24V output current, typ.
(12V not loaded)
Fig. 8-2 Required input current vs. input
voltage for battery charging
(12V not loaded)
Battery Current
0
0
10
20
5
15
25
30A
2.57.5105.21A515
Output Current
Voltage on
battery terminal
of the DC-UPS:
A:
10.5V
B:
11V
C:
12V
A B C
Input Current
0
23
0.5
1.0
0.25
0.75
1.25
1.5A
Input Voltage
24252628V
m
a
x
.
(
b
a
t
t
e
r
y
c
ha
r
g
i
n
g
c
u
r
r
e
n
t
1
.
7
A
)
27
t
y
p
.
(
ba
t
t
e
r
y
c
h
a
r
g
i
n
g
c
ur
r
e
n
t
1
.
5
A
)
8Rockwell Automation Publication 1606-RM017A-EN-P — February 2014
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
Bulletin 1606 Switched Mode Power Supplies
9.Buer Time
The buer time depends on the capacity and performance of the battery as well as the load current. The diagram
below shows the typical buer times of the 24V output with the standard battery modules at 20°C.
Buer time with battery module 1606-XLSBATASSY1 min. 18’30’’ At 5A output current *)
min. 5’30’’ At 10A output current *)
typ. 20’50’’ At 5A output current, see
Fig. 9-1 **)
typ. 6’30’’ At 10A output current, see Fig. 9-1 **)
Buer time with battery module 1606-XLSBATASSY2 min. 96’30’’ At 5A output current *)
min. 37’50” At 10A output current *)
typ. 126’ At 5A output current, see Fig. 9-1 **)
typ. 53’20” At 10A output current, see Fig. 9-1 **)
*) Minimum value includes 20% aging of the battery and a cable length of 1.5m with a cross section of 2.5mm2 between the
battery and the DC-UPS and requires a fully charged (min. 24h) battery.
**) Typical value includes 10% aging of the battery and a cable length of 0.3m with a cross section of 2.5mm
2
between the battery
and the DC-UPS and requires a fully charged (min. 24h) battery.
Fig. 9-1 Buer time vs. 24V output current with the battery modules 1606-XLSBATASSY1 and 1606-XLSBATASSY2
Buer Current
515
2
4
6
8
10A
201025 30 3545 504055 60 65 70 75 80 85
Buer Time (Minutes)
1606-XLSBATASSY2 typ.
1606-XLSBATASSY1 typ.
.
12
V
7
A
h
b
a
t
t
er
y
1
2
V
2
6
A
h
b
a
t
t
e
r
y
120 150210 240
300
Min.
18027090
1606-XLSBATASSY1 typ.
1606-XLSBATASSY2 typ.
90
The buer time is reduced if the 12V output is loaded. This can be calculated according to the following
example:
Step 2: Add the computed current to the actual 24V current:
2.15A+ 5A = 7.15A
Step 3: Determine the buer time by using the standard buer time curve
(
)
Fig. 9-1
:
7.15A load with 1606-XLSBATASSY2: Approx. 12 minutes buer time.
The battery capacity is usually specied in amp-hours (Ah) for a 20h discharging event. The battery discharge is nonlinear (due to the battery chemistry). The higher the discharging current, the lower the appropriable battery capacity.
The magnitude of the reduction depends on the discharging cu rrent as well as on the type of battery. High current
battery types can have up to 50% longer buer times co mpared to regular batteries when batteries will be
discharged in less than 1 hour. High discharging currents do not necessarily mean high power losses as the
appropriable battery capacity is reduced with such currents. When the battery begins to recharge after a discharging
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
Rockwell Automation Publication 1606-RM017A-EN-P — February 20149
Bulletin 1606 Switched Mode Power Supplies
T
event, the process is completed much faster since only the energy which was taken out of the battery needs to be
“relled”. For this reason, the buer time cannot be calculated using the Ah capacity value.
he equation “I x t” = capacity in Ah generally leads to incorrect results when the discharging current is higher than
C20 (discharging current for 20h). The battery datasheet needs to be studied and a determination of the expected
buer time can be made by following the example below:
Example how to determine the expected buer time for other battery types and battery sizes:
Step 1 Check the datasheet of the battery which is planned to be used and look for the discharging curve.
Sometimes, the individual discharging curves are marked with relative C-factors instead of current
values. This can easily be converted. Multiply the C-factor by the nominal battery capacity to obtain
the current value. E.g.: 0.6C on a 17Ah battery means 10.2A.
Fig. 9-2 Typical discharging of a typical 17Ah battery, curve taken from
a manufacturer’s datashet
Step 2 Determine the required battery current. Use Fig. 8-1 “Battery discharging current vs. output current” to
get the battery current.
Fig. 8-1 requires the average voltage on the battery terminals. Since there is a
voltage drop between the battery terminals and the battery input of the DC-UPS, it is recommended to
use the curve A or B for output currents > 3A or when using long battery cables. In all other situations,
use curve C.
Step 3 Use the determined current from Step 2 to nd the appropriate curve in Fig. 9-2. The buer time
(Discharging Time) can be found where this curve meets the dotted line. This is the point where the DCUPS stops buering due to the under-voltage lockout.
Step 4 Depending on Fig. 9-2, the buer time needs to be reduced to take into account aging eects or
guaranteed values.
Example:
Buer current is 24V 7.5A and a battery according to Fig. 9-2
is 1m and has a cross-section of 2.5mm
Answer:
2
. How much is the maximum achievable buer time?
is used. The cable between the battery and the DC-UPS
According to Fig. 8-1, the battery current is 18A. Curve A is used since the battery current is > 3A and the
length of the cable is one meter.
According to Fig. 9-2, a buer time (Discharging Time) of 30 minutes can be determined. It is recommended
to reduce this gure to approximately 24 minutes for a guaranteed value and to cover aging eects.
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
10Rockwell Automation Publication 1606-RM017A-EN-P — February 2014
*) Return current protection: this feature uses a Mosfet instead of a diode in order to minimize the voltage drop and power
losses.
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
Rockwell Automation Publication 1606-RM017A-EN-P — February 201411
Bulletin 1606 Switched Mode Power Supplies
12. Check Wiring and Battery Quality Tests
The DC-UPS is equipped with an automatic “ Check Wiring” and “Battery Quality” test.
“Check Wiring” test:
Under normal circumstances, an incorrect or bad connection from the battery to the DC-UPS or a missing (or blown)
battery fuse would not be recognized by the UPS when operating in normal mode. Only when backup is required
would the unit be unable to buer. Therefore, a “check wiring” test is included in the DC-UPS. This connection is
tested every 10 seconds by loading the battery and analyzing the response from the battery. If the resistance is too
high, or the battery voltage is not in range, the unit displays “Check Wiring” along with the red LED. At the same time
the green “Ready” LED will turn o.
“Battery Quality” or “State of Health” (SoH) test:
The battery has a limited service life and needs to be replaced at xed intervals dened by the specied service
life (acc. to the Eurobat guideline), based on the surrounding temperature and the number of
charging/discharging cycles. If the battery is used longer than the specied service life, battery capacity will
degrade. Details can be found in section 26.1. The battery quality test cannot identify a gradual loss in capacity.
It is however able to detect a battery failure within the specied service life of the battery. Therefore a battery quality test
is included in the DC-UPS.
The battery quality test consists of dierent types of tests:
During charging:
If the battery does not reach the ready status (see section 14) within 30 hrs, it is considered to be defective.
This could be due to a broken cell inside the battery.
During operation:
Once the battery is fully charged, a voltage drop test and a load test are performed alternately every 8 hours.
Three of the tests must consecutively produce negative results to indi cate a battery problem.
A battery problem is indicated by the yellow LED (replace battery pattern) and the relay contact “Replace Battery.”
Please note that it can take up to 50 hours (with the largest size battery) until a battery problem is reported. This
should avoid nuisance error messages as any urgent battery problems will be reported by the “Check Wiring” test
and create a warning signal. Battery tests require up t0 50 hours of untinterrupted operation. Any interruption in the
normal operation of the DC-UPS may induce the “Replace Battery” test cycle to start all over.
When “Replace battery” is indicated, we recommend replacing the battery as soon as possible.
12Rockwell Automation Publication 1606-RM017A-EN-P — February 2014
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
Bulletin 1606 Switched Mode Power Supplies
13. Relay Contacts and Inhibit Input
The DC-UPS is equipped with relay contacts and signal inputs for remote monitoring and control of the unit.
Relay contacts:
Ready: Contact is closed when battery is charged more than 85%, no wiring failure is recognized, input
voltage is sucient and inhibit signal is inactive.
Buering: Contact is closed when unit is buering.
Replace Battery: Contact is closed when the unit is powered from the input and the battery quality test (SoH test)
reports a negative result.
Relay contact ratings max 60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A resistive load min 1mA at 5Vdc min. Isolation voltage max 500Vac, signal port to power port
Signal input:
7 +
5,1V
3mA
Inhibit
8 -
Inhibit: The inhibit input disables buering. In normal mode, a static signal is
required. In buer mode, a pulse with a minimum length of 250ms is
required to stop buering. The inhibit is stored and can be reset by
cycling the input voltage. See also section
26.1 for application hints.
Signal voltage max. 35Vdc Signal current max. 6mA, current limited Inhibit threshold min. 6Vdc, buering is disabled above this threshold level max. 10Vdc Isolation nom. 500Vac, signal port to power port
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
Rockwell Automation Publication 1606-RM017A-EN-P — February 201413
Bulletin 1606 Switched Mode Power Supplies
14. Front Side User Elements
A Power Port
Quick-connect spring-clamp terminals, connection for input voltage,
output voltage and battery. The 12V power port is placed on the bottom.
B Signal Port
Plug connector with screw terminals, inserted from the bottom.
Connections for the Ready, Buering, Replace Battery relay contacts and
for the Inhibit input. See details in section 13.
C Green Status LED
Ready: Battery is charged > 85%, no wiring failure is recognized, input
voltage is sucient and inhibit signal is not active.
Charging: Battery is charging and the battery capacity is below 85%.
Buering: Unit is in buer mode.
Flashing pattern of the green status LED:
Ready
Charging
Buffering
ON
OFF
ON
OFF
ON
OFF
D Yellow Diagnosis LED
Overload: Output has switched o due to long overload in buer mode
or due to high temperatures.
Replace battery: Indicates a battery which failed the battery quality test
(SoH test). Battery should be replaced soon.
Buer-time expired: Output has switched o due to settings of Buer-
timer Limiter. This signal will be displayed for 15 minutes.
Inhibit active: Indicates that buering is disabled because of an inactive
inhibit signal.
Flashing pattern of the yellow diagnosis LED:
Overload
Replace
Battery
Buffer time
expired
Inhibit
active
ON
OFF
ON
OFF
ON
OFF
ON
OFF
E Red Check Wiring LED
This LED indicates a failure in th e installation (e.g. input voltage excessively low), wiring, battery or battery fuse.
F Buer-time Limiter:
User accessible dial which limits the maximum buer time in a buer event to save battery energy. When the
battery begins to recharge after a di scharging event, the process is completed much faster since only the energy
which was taken out of the battery needs to be “relled”. The following times can be selected: 10 seconds, 30
seconds, 1 minute, 3 minutes, 10 minutes or innity (until battery is at) which allows buering until the deep
discharge protection stops buering.
G
End-of-charge Voltage Selector:
The end-of-charge-voltage shall be set manually according to the expected temperature in which the battery is
located. The dial on the front of the unit allows a continuous adjustment between +10 and +40°C. 10°C will set
the end-of-charge-voltage to 13.9V, 25°C
13.65V and 40°C 13.4V. If in doubt about the expected temperature,
set the unit to 35°C.
A
B
C
D
E
F
G
14Rockwell Automation Publication 1606-RM017A-EN-P — February 2014
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
Bulletin 1606 Switched Mode Power Supplies
15. Terminals and Wiring
12V Terminal Signal terminals
Power terminals
(except 12V)
Type Bi-stable, quick-connect
spring-clamp terminals.
Shipped in open position.
Lockable plug connector
with spring-clamp
terminals.
Plug connector with screw
terminal. Shipped in open
position. To meet GL
requirements, unused terminal
compartments should be closed.
Solid wire 0.5-6mm
222
0.1-2.5mm0.2-1.5mm
222
Stranded wire 0.5-4mm0.1-2.5mm0.2-1.5mmAWG 20-10AWG 28-12AWG 22-14AWG Ferrules Allowed, but not required Allowed, but not required Allowed, but not required
Pull-out force 10AWG:80N, 12AWG:60N, 14AWG:50N, 16AWG:40N
according to UL486E
Not applicable
Recom. screwdriver Not required3,5mm slotted 3,5mm slotted Tightening torque Not applicable Not applicable 0.4Nm, 3.5lb.in Wire stripping length 10mm / 0.4 in.8.5mm / 0.34 in. 6mm / 0.24 in.
Fig. 15-1 Spring-clamp terminals, connecting a wire
1.
Insert the wire
2.
Close the lever
To disconnect wire:
reverse the procedure
Instructions:
a)Use appropriate copper cables, that are designed
for an operating temperature of 60°C
b)Follow national installation codes and regulations!
c)Ensure that all strands of a stranded wire are properly
inserted in the terminal connection!
d)
Up to two stranded wires with the same cross section
are allowed in one connection point.
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
Rockwell Automation Publication 1606-RM017A-EN-P — February 201415
Bulletin 1606 Switched Mode Power Supplies
16. Reliability
Lifetime expectancy, normal mode min. 114 000 h At 10A output current, 40°C
min. 148 000 h At 5A output current, 40°C min. 380 000 h At 10A output current, 25°C MTBF SN 29500, IEC 61709, normal mode 788 000 h At 10A output current, 40°C MTBF MIL HDBK 217F, normal mode 343 000 h At 10A output current , 40°C, ground benign GB40
The Lifetime expectancy shown in the table indicates the operating hours (service life) and is determined by the
lifetime expectancy of the built-in electrolytic capacitors. Lifetime expectancy is specied in operational hours.
Lifetime expectancy is calculated according to the capacitor’s manufacturer specication. The prediction model allows
a calculation of up to 15 years from date of shipment.
MTBF
stands forMean Time Between Failures which is calculated according to statistical device failures and indicates
reliability of a device. It is the statistical representation of the likelihood of failure of a unit and does not necessarily
represent the life of a product.
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
16Rockwell Automation Publication 1606-RM017A-EN-P — February 2014
Bulletin 1606 Switched Mode Power Supplies
17. EMC
The unit is suitable for applications in industrial environmental as well as in residential, commercial and light industry.
environment without any restrictions. The CE Mark is in conformance with EMC directive 89/336/EC and 93/68/EC &
2004/108/EC and the low-voltage directive (LVD) 73/23/EC, 93/68/EC, 2006/95/EC.
A detailed EMC Report is available on request.
EMC Immunity
EN 61000-6-1, EN 61000-6-2
Generic standards
Electrostatic discharge EN 61000-4-2 Contact discharge
Air discharge
8kV
15kV
Criterion A*)
Criterion A *)
Electromagnetic RF eld EN 61000-4-3 80MHz-1GHz 10V/m Criterion A Fast transients (Burst) EN 61000-4-4 Out- and input lines 2kV Criterion A Signal lines **) 2kV Criterion A
Surge voltage EN 61000-4-5
Input + / -
housing 500V Criterion A
24V Output +
-
housing
500V Criterion A
12V Output + / -
housing
500V Criterion A
24V Output + - 500V Criterion A
Input +
- 500V Criterion A
Conducted disturbance EN 61000-4-6 0,15-80MHz 10V Criterion A
*) DIN rail grounded
**) Tested with coupling clamp
EMC Emission
EN 61000-6-3, EN 61000-6-4 Generic standards
Conducted emission EN 55022 Input lines Class B *) EN 55022 24V Output lines Class B *) EN 55022 12V Output lines Class A *) Radiated emission EN 55011, EN 55022 Class B
This device complies with FCC Part 15 rules.
Operation is subjected to the 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.
*) Informative measurement with voltage probe
Switching Frequencies
The DC-UPS has four converters with four dierent
switching frequencies included.
Switching frequency of boost converter 100kHz Constant frequency Switching frequency of electronic output current limitation78kHz Constant frequency Switching frequency of battery charger 19.5kHz Constant frequency Switching frequency of step-down converter 12V output 40-55kHz Depending on 12V output load
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
Rockwell Automation Publication 1606-RM017A-EN-P — February 201417
Bulletin 1606 Switched Mode Power Supplies
18. Environment
Operational temperature -25°C to +70°C (-13°F to 158°F) For the DC-UPS control unit.
Keep battery in a cooler environment!
at +50°C to +70°C (122°F to 158°F),
Derating 6W/°C
normal mode see Fig. 18-1,
buer mode see Fig. 18-2
Storage temperature -40 to +85°C (-40°F to 185°F) Storage and transportation, except battery
Humidity 5 to 95% r.H.
IEC 60068-2-30
Do not energize in the presence of condensation.
Vibration, sinusoidal 2-17.8Hz: ±1.6mm; 17.8-500Hz: 2g IEC 60068-2-6
Shock 30g 6ms, 20g 11ms IEC 60068-2-27
Altitude 0 to 6000m Approvals apply only up to 2000m
Over-voltage category III EN 50178
II EN 50178 above 2000m altitude
Degree of pollution 2 EN 50178, not conductive
Fig. 18-1 Output current vs. ambient temperature
in normal mode
Fig. 18-2 Output current vs. ambient temperature
in buer mode
Allowable Output
Power in Normal Mode
0
-2502050
70°
60
120
180
240
300
360W
60
Ambient Temperature
Allowable Output
Power in Buer Mode
0
-2502050
70°
60
120
180
240
300
360W
c
o
n
t
i
n
u
o
u
s
60
Ambient Temperature
f
o
r
t
y
p
.
5
s
The ambient temperature is dened 2cm below the unit.
19. Protection Features
Output protection Electronically protected against overload, no-load and short-circuits
Output over-voltage protection typ. 32Vdc
max. 35Vdc
24V Output
In case of an internal defect, a redundant circuitry limits
the maximum output voltage. The output automatically
shuts down and makes restart attempts.
max. 16V
12V Output: The unit is protected with a melting fuse.
In case the fuse has triggered, return unit to factory.
Degree of protection IP20 EN/IEC 60529
Penetration protection > 3.5mm E.g. screws, small parts
Reverse battery polarity protection yes Max. –35Vdc;
Wrong battery voltage protection yes Max. +35Vdc (e.g. 24V battery instead of 12V battery)
Battery deep discharge protection yes The limit depends on the battery current.
Over temperature protection yes Output shut-down with automatic restart
Input over-voltage protection yes Max. 35Vdc, no harm to or defect of the unit
Internal input fuse 25A, blade type No user accessible part, no service part
C
C
18Rockwell Automation Publication 1606-RM017A-EN-P — February 2014
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
Bulletin 1606 Switched Mode Power Supplies
20. Safety
Output voltage SELV IEC/EN 60950-1
PELV EN 60204-1, EN 50178, IEC 60364-4-41
Max. allowed voltage between any input, output or signal pin and ground:
60Vdc or 42.4Vac
Class of protection III PE (Protective Earth) connection is not required
Isolation resistance > 5MOhm Power port to housing, 500Vdc
Dielectric strength 500Vac Power port to signal port
500Vac Power port / signal port to housing
Touch current (leakage current) The leakage current which is produced by the DC-UPS itself depends on the input
voltage ripple and need to be investigated in the nal application.
For a smooth DC input voltage, the produced leakage current is less than 100 μA.
21. Certications
UL 508
LISTED E56639 listed for use in the U.S.A. (UL 508) and
Canada (C22.2 No. 14-95)
Industrial Control Equipment
IND. CONT. EQ.
18WM
UL 60950-1
RECOGNIZED E168663 recognized for use in the
U.S.A. (UL 60950-1) and Canada (C22.2 No. 60950)
Information Technology Equipment, Level 3
ISA 12.12.01, CSA
C22.2 No. 213
RECOGNIZED UNDER FILE NUMBER E244404 for use in the U.S.A.
(ISA 12.12.01) and Canada (C22.2 No. 213)
Hazardous Location Class I Div. 2 - Groups A, B, C, D
EN 60950-1, EN 61204-3
Complies with CE EMC and CE Low Voltage Directives
Marine RINARINA (Registro Italiano Navale) certied. See below for linj
to the Certicate.
GOST R certication is applicable for products intended for sale
and use withing Russia. See below for link to Certicate.
GOST R
C-TICKC-tick compliance is for products intended for sale and use within
the Australian market. See below for link to the C-tick Declarations
of Conformity.
Product certification information (including Certificates and declarations of Conformity) can be found at www.ab.com/certification.
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
Rockwell Automation Publication 1606-RM017A-EN-P — February 201419
Bulletin 1606 Switched Mode Power Supplies
22. Environmental Compliance
The unit does not release any silicone and is suitable for use in paint shops.
The unit conforms to the RoHS directive 2002/96/EC.
Electrolytic capacitors included in this unit do not use electrolytes such as Quaternary Ammonium Salt Systems.
Plastic housings and other molded plastic materials are free of halogens.
The materials used in our production process do not include the following toxic chemicals:
Polychlorinated Biphenyl (PCB), Pentachlorophenol (PCP), Polychlorinated naphthalene (PCN), Polybrominated
Biphenyl (PBB), Polybrominated Biphenyl Oxide (PBO), Polybrominated Diphenyl Ether (PBDE), Polychlorinated
Diphenyl Ether (PCDE), Polybrominated Diphenyl Oxide (PBDO), Cadmium, Asbestos, Mercury, Silica
23. Physical Dimensions and Weight
Width 49mm / 1.93’’
Height 124mm / 4.88’’ Plus height of signal and 12V output connector plug (see Fig. 24-1)
Depth 117mm / 4.61’’ Plus depth of DIN rail Weight 650g / 1.43lb
DIN Rail Use 35mm DIN rails according to EN 60715 or EN 50022 with a height of 7.5 or 15mm.
The DIN rail height must be added to the depth (117mm) to calculate the total required installation
depth.
Fig. 23-1 Side view Fig. 23-2 Front view
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
20Rockwell Automation Publication 1606-RM017A-EN-P — February 2014
Bulletin 1606 Switched Mode Power Supplies
24. Installation Notes
Mounting:
The power terminal must be located on top of the unit. An appropriate electrical and re end-product enclosure
should be considered in the end-use application.
Cooling: Convection cooled, no forced air cooling required. Do not obstruct air ow!
Installation clearances: 40mm on top, 20mm on the bottom, 5mm on the left and right side are recommended
when loaded permanently with full power. In case the adjacent device is a heat source, a clearance of 15mm
is recommended.
Risk of electrical shock, re, personal injury or death!
Turn power o and disconnect battery fuse before working on the DC-UPS. Protect against inadvertent re-powering.
Make sure the wiring is correct by following all local and national codes. Do not open, modify or repair the unit.
Use caution to prevent any foreign object from entering the housing.
Do not use in wet locations or in areas where moisture and/or condensation are likely to be present.
Service parts:
The unit does not contain any service parts. The tripping of an internal fuse is caused by an internal fault. Should damage
or malfunction occur during operation, immediately turn power o and return unit to the factory for inspection!
Wiring and installation instructions:
(1) Connect the power supply to the input terminals of the DC-UPS.
(2) Connect the battery to the battery terminals of the DC-UPS. It is recommended to install the battery outside the
cabinet or in a place where the battery will not be heated up by adjacent equipment. Do not install the battery
in airtight housings or cabinets. The battery should be installed according to EN50272-2, which includes sucient
ventilation. Batteries store energy and need to be protected against energy hazards. Use a 30A battery fuse type
ATO® 257 030 (Littelfuse) or similar in the battery path. The battery fuse protects the wires between the battery
and the DC-UPS. It also allows the disconnection of the battery from the DC-UPS which is recommended when
working on the battery or DC-UPS. Disconnect battery fuse before connecting the battery.
Please note: Excessively short or long wires between the DC-UPS and the battery may shorten the buer time or
result in a malfunction of the DC-UPS . Do not use wires smaller than 2.5mm
2x1.5m (cord length 1.5m). Avoid voltage drops on this connection.
(3) Connect the buered load to the output terminals of the DC-UPS. The 24V output is placed on top of the unit.
The 12V output is placed on bottom of the unit behind the signal plug. The output is decoupled from the input
allowing load circuits to be easily split into buered and non buered sections. Noncritical 24V loads can be
connected directly to the power supply and will not be buered. The energy of the battery can then be used in
the circuits which require buering.
(4) Install the battery fuse upon completion of the wiring.
2
(or 12AWG) and no longer than
Fig. 24-1 Typical wiring diagram
+
-
24V
Power
supply
NLPE
+
-+-+-
24V
IN
BAT
DC-UPS
1606XLS240 UPSD
12V
12V
24V
+
-
buffered
branch
24V
OUT
+
-
+
-
12V
Battery
12V
buffered
+
-
branch
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
Rockwell Automation Publication 1606-RM017A-EN-P — February 201421
Bulletin 1606 Switched Mode Power Supplies
25. Accessories
Battery Modules
Two pre-assembled battery modules with a single 12V battery are available for dierent buer times. As an option,
the mounting brackets are also available without batteries. This option oers more exibility in selecting an
appropriate battery, which can also save on shipping expenses. See individual datasheets for detailed information.
1606-XLSBATASSY1 1606-XLSBATASSY2
Battery type Standard version
12V, 7Ah
High current version
12V, 26Ah
VRLA lead-acid maintenance free
battery
Service life 3 to 5 years 10 to 12 years According to EUROBAT guideline
Dimensions 155x124x112mm 214x179x158mm Width x height x depth
Weight 3.2kg 9.9kg
DIN rail mountable yes no
Order number 1606-XLSBATASSY1 1606-XLSBATASSY2 Battery module
1606-XLSBATBR1 1606-XLSBATBR2 Mounting bracket without battery
1606-XLSBAT1 1606-XLSBAT2 Replacement battery only
Fig. 25-1 1606-XLSBATASSY1
Fig. 25-2 1606-XLSBATASSY2
1606-XLB Wall / Panel Mounting Bracket
This bracket is used to mount the DC-UPS units onto a at surface without using a DIN rail. The two aluminium
brackets and the black plastic slider of the DC-UPS must be removed to allow the installation of the two surface
brackets.
Fig. 25-3
1606-XLB Wall / Panel Mounting Bracket
Fig. 25-4 Assembled Wall / Panel Mounting Bracket
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
22Rockwell Automation Publication 1606-RM017A-EN-P — February 2014
Bulletin 1606 Switched Mode Power Supplies
26. Application Notes
26.1.Battery Replacement Intervals
Batteries have a limited life time. They degrade slowly beginning from the production and need to be replaced
periodically. The design life gures can be found in the individual datasheets of the batteries and are usually specied
according to the Eurobat guideline or according to specications from the manufacturer.
The design life is the estimated life based on laboratory condition, and is quoted at 20°C using the manufacturer’s
recommended oat voltage condition. According to the Eurobat guidelines, design lives have been structured into the
following dierent groups:
3 - 5 years:
6 - 9 years:
10 - 12 years:
A battery failure within the specied design life of the battery usually results in a complete loss of the battery
function (broken cell, faulty connection, …) and will be detected and reported by the periodical battery tests which
are included in the 1606-XLS240-UPSD DC-UPS control unit.
If the operational parameters dier from those which are specied for the design life, earlier replacement of the
battery might be necessary. The “real life” is also called service life and is dened as the point at which the cell’s actual
capacity has reached 80% of its nominal capacity. At the end of the service life, capacity degrades much faster; further
use of the battery is therefore not recommended.
Temperature eect:
The temperature has the most impact on service life. The hotter the temperature, the sooner the wear-out phase of
the battery begins. The wear-out results in a degradation of battery capacity. See Fig. 26-1 for details.
Eect of discharging cycles
The number as well as the depth of discharging cycles is limited. A replacement of the battery might be necessary
earlier than the calculated service life if th
Other eects which shortens the service life
Guidelines for a long battery service life
This group of batteries is very popular in standby applications and in small emergency equipment.
This represents a 4 years design life with a production tolerance of ±1 year.
This group of batteries is usually us ed when an improved life is required.
This represents a 7.5 years design life with a production tolerance of ±1.5 years.
This group of batteries is used in applications that require longest life and highest safety levels.
This represents a 11 years design life with a production tolerance of ± one year.
e battery exceeds the numbers and values of Fig. 26-2.
Overcharging and deep discharging shortens the service life and should be avoided. Thanks to the single
battery concept of the 1606-XLS240-UPSD, the end-of-charge-voltage can be set very precisely to the required
value and thereby avoiding unnecessary aging eects.
Charge retention is important to ensure the longest battery life. Stored batteries that are not fully charged
age faster then charged batteries. Batteries which are not in use should be recharged at least once a year.
Excessive oat charge ripple across the battery has an eect of reducing life and performance. The
1606-XLS240-UPSD does not produce such a ripple voltage. This eect can be ignored when the battery
is charged via the 1606-XLS240-UPSD.
Place the battery in a cool location: E.g. near the bottom of the control cabinet.
Do not place the battery near heat generating devices.
Do not store discharged batteries.
Do not discharge the battery more than necessary. Set buer time limiter to the required buer time.
When choosing the battery capacity, always try to get the capacity immediately higher than absolutely
required. The depth of discharge reduces the service life of the battery and limits the number of cycles.
See Fig. 26-2.
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
Rockwell Automation Publication 1606-RM017A-EN-P — February 201423
Bulletin 1606 Switched Mode Power Supplies
Example for calculating the service life and the required replacement cycle:
Parameters for the example:
A 7Ah battery with a design life of 3-5 years is used (e.g. Yuasa battery from the 1606-XLSBATASSY1 battery module).
The average ambient temperature is 30°C
One buer event consumes approx. 25% of the achievable buer time.
One buer event per day
Calculation:
Ambient temperature inuence:
According to
Fig. 26-1 curve A, a 2
years service life can be expected for an ambient temperature of 30°C.
Number of discharging cycles: 2 years * 365 cycles = 730cycles in 2 years.
According to
Fig. 26-2, curve C has to be used (only 25% of battery capacity is required). 730 cycles have only a
negligible inuence in battery degradation and can be ignored.
Result:
The battery will need to be replaced after 2 years.
Please note that battery degradation begins from the production date (check date code on the battery) which may
shorten the replacement intervals.
Fig. 26-1 Service life versus ambient
temperature, typ. *)
Fig. 26-2 Cell capacity degradation vs.
discharging cycles *)
0
120%
100%
40%
20%
Number of Discharging Cycles
80
60%
80%
Cell Capacity
Depth of
discharge
A: 100%
B: 50%
C: 30%
160240320400480
A
B
C
200400600800 1000 1200
BATASSY2
BATASSY1
20°C
10
30°C35°C
40°C
45°C
8
6
4
2
Ambient Temperature
25°C
1
3
5
7
9
Service Life in Years
Design Life
of Battery
A:
3-5 Years
B:
6-9 Years
C:
10-12 Years
A
B
C
*) datasheet gures from battery manufacturer
26.2.Parallel and Serial Use
Do not use the DC-UPS in parallel to increase the output power. However, two units of the DC-UPS can be
paralleled for 1+1 redundancy to gain a higher system reliability.
Do not use batteries in parallel, since the battery quality test might generate an error message.
Do not connect two or more units in series for higher output voltages.
Do not connect two or more units in a row to achieve longer hold-up times.
24Rockwell Automation Publication 1606-RM017A-EN-P — February 2014
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
Bulletin 1606 Switched Mode Power Supplies
26.3.Using the Inhibit Input
The inhibit input disables buering. In normal mode, a static signal is required. In buer mode, a pulse with a
minimum length of 250ms is required to stop buering. The inhibit 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.
Battery
Fig. 26-3 Wiring example for inhibit input
+
12V
-
+-+-
Output
Power
Supply
Input
NL
PE
+ -+ -+ -
BAT
IN
24V
12V
DC-UPS
Signal Port
OUT
24V
+ -
Buffered
Load
Inhibit
Service
Switch
-
+
26.4.Troubleshooting
The LEDs on the front of the unit and relay contacts indicate about the actual or elapsed status of the DC-UPS. Please
see also section 14
The following guidelines provide instructions for xing 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
“Check wiring” LED is on Check correct wiring between the battery and the DC-UPS.
DC-UPS did not buer
DC-UPS stopped bueringDeep discharge protection stopped buering use a larger battery, or allow
Output has shut down
DC-UPS constantly switches between normal mode and buer mode
.
25 rst.
Check battery fuse. Is the batte ry fuse inserted or blown?
Check battery voltage (must be typically between 7.4V and 15.1V).
Check input voltage (must be typically between 22.8V and 30V).
Check battery polarity.
Inhibit input was set.
Battery did not have enough time to be charged and is still below the deep discharge
protection limit.
sucient time for ch
arging the battery.
Output was overloaded or short circuit reduce load.
Cycle the input power to reset the DC-UPS.
Let DC-UPS cool down, over temperature protection might have triggered.
The supplying source on the input is too small and cannot deliver sucient current.
Use a larger power supply or reduce the output load.
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
Rockwell Automation Publication 1606-RM017A-EN-P — February 201425
Bulletin 1606 Switched Mode Power Supplies
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 noted otherwise.
It is assumed that the input power source can deliver a sufficient output current.
26Rockwell Automation Publication 1606-RM017A-EN-P — February 2014
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If you experience a problem within the first 24 hours of installation, review the information that is contained in
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