Emerson SolaHD SDU DC UPS B Series User manual

Uninterruptible Power Supply
User Manual
SDU DC UPS B-Series

Contents
Safety Instructions.............................................. 1
Introduction....................................................... 2
Preinstallation.................................................... 2
Receiving ........................................................... 2
What’s Included ................................................2
Battery Options .................................................3
Optional Accessories .........................................3
Product Description............................................ 3
Installation......................................................... 4
Location ............................................................4
DIN Rail Mounting .............................................4
Removing the Unit from the DIN Rail .................4
Optional Chassis Mounting................................5
Connecting the Unit - Wiring Diagrams .............8
SDU DC UPS B-Series with SDU 24-BATB............8
SDU DC UPS B-Series with SDU 24-BATEM .........9
Charging the Battery .........................................9
Operation......................................................... 10
Turning ON the UPS (Normal Mode) ............... 10
Turning OFF the UPS....................................... 10
Remote ON/OFF ............................................. 10
Self-Testing..................................................... 10
LED Status ........................................................ 11
Contact Relay Truth Table................................. 12
UPS Battery ...................................................... 13
Battery Types.................................................. 13
Batteries for SDU-24 BATB .............................. 13
Batteries for SDU-24 BATEM ........................... 13
Battery Backup Times ...................................... 14
SDU 10-24B with SDU 24-BATB....................... 14
SDU 20-24B with SDU 24-BATB....................... 14
SDU 10-24B with SDU 24-BATEM.................... 14
SDU 20-24B with SDU 24-BATEM.................... 14
Specifications ................................................... 15
Power Module Specications .......................... 15
Battery Module Specications ........................ 17
Troubleshooting............................................... 18
Troubleshooting............................................. 18
Storage ............................................................ 19
Extended Storage .......................................... 19
Technical Support............................................. 20
Warranty ......................................................... 20
Warranty Information..................................... 20
Product Literature .......................................... 20

Page: 1
Safety Instructions
PLEASE READ AND FOLLOW THESE INSTRUCTIONS!
This manual contains important safety instructions that must be followed during the installation and
operation of the DC UPS. Follow all warnings on the unit, in this manual and on the safety instruction sheet.
WARNING - Explosion Hazard, Risk of Electric Shock and
Energy Hazard
This device receives input power from multiple sources. Disconnect the DC UPS input from the
AC to DC power supply connection and the DC Battery Modules before wiring. Follow all local,
National Electrical Code®(NEC®) and CEC wiring and installation codes
Wiring/Torque Specifications: Use only 90°C rated solid or stranded copper wire
Terminals Gauge Size Torque
Input/Output 10-14 AWG (5.3-2.1mm2) 4.4-6.5lb-inch (50-73 N-cm)
Remote On/Off Connections (1-9) 16-24 AWG (1.3-0.2mm2) N/A
Contact Terminal Connections (10-11) 16-24 AWG (1.3-0.2mm2) N/A
• Remote On/Off and Contact Terminal connections: Connect only to Class 2 or LPS circuit.
• Battery Connection: Use only the SOLA cable provided with unit or SOLA type SDU 24EXTBC6
CAUTION - Risk of electric shock and personal injury
Do not remove the cover, as the unit has no user-serviceable parts inside.
GENERAL INSTALLATION SAFETY PRECAUTIONS:
• This product is for indoor use only in a Pollution Degree II environment, Overvoltage
Category II system.
• Device provides Double Insulation based on 100 V maximum working voltage according
to IEC61010-1.
• To prevent the risk of fire or electric shock, install the DC UPS in a temperature and humidity
controlled ventilated enclosure, free of conductive contaminants, moisture, flammable liquids,
gases, and corrosive substances. Do not install or operate the DC UPS in or near water.
• Do not place the DC UPS under direct sunlight or close to heat-emitting sources.
• To allow proper ventilation of the DC UPS, do not block or cover the top and bottom sides of the
unit. Do not insert any objects into the ventilation holes or other openings of the DC UPS. Keep all
vents free of dust accumulation that could restrict airflow.
• Do not place the DC UPS on an unstable cart, stand, or table. Ensure that it is properly installed on
the DIN rail.

Page: 2
GENERAL OPERATING SAFETY PRECAUTIONS:
RATINGS:
Model SDU 10-24B SDU 20-24B
Nominal Input Voltage /Current 24Vdc, 12A 24Vdc, 22A
Nominal Output Voltage/
Current/Power
24Vdc, 10A, 240W 24Vdc, 20A, 480W
Contact Relay 50Vdc, 0.2A 50Vdc, 0.2A
Ambient Ordinary Location: -15C to +50C Ordinary Location: -15C to +50C
The following documents contain important safety instructions that must be followed during the installation
and operation of the DC UPS. Follow all warnings mentioned in the documents.
Document Part No./ Rev/ Year
Safety Instruction Sheet – SDU 10-24B, SDU 20-24B DC Uninterruptible
Power Supplies
A272-367 Rev.0 8/2021
Safety Instruction Sheet – SDU 24-BATB DC Uninterruptible Power Supply
Battery Module
A272-368 Rev.0 8/2021
Safety Instruction Sheet – SDU-BATEM DC Uninterruptible Power Supply
Battery Module
A272-369 Rev.0 8/2021
Introduction
Congratulations on your choice of the SDU DC B Series Uninterruptible Power System (UPS). The SDU DC is
an advanced 24 Vdc UPS that combines an industry leading design, unique installation options, and a wide
operational temperature range (see “Specications”).
The SDU DC is a powerful microprocessor-controlled UPS which provides protection from power interruptions
and is the ideal power backup solution for your critically connected loads.
Preinstallation
Receiving
Inspect the UPS upon receipt. Damage that may have occurred in transit is not covered under the warranty. If
shipping damage is present, contact your local carrier and SolaHD distributor immediately.
What’s Included
• SDU 10-24B or SDU 20-24B
• Safety Instruction Sheet
• Remote On/Off Bypass Jumper

Page: 3
Battery Options
Two battery modules are available:
• SDU 24-BATB: 24 V DIN rail/panel mount battery module (cable included).
NOTE: Up to 4 SDU 24-BATB modules can be connected to the UPS.
• SDU 24-BATEM: 24 V external mount battery module (cable included).
NOTE: Only 1 SDU 24-BATEM module can be connected to the UPS.
NOTE: A combination of both modules cannot be used with the UPS.
Optional Accessories
• SDU 24EXTBC6: 1ft (30.5cm) battery module cable.
• SDU 24-DB9: Interface kit to convert relay contact signals to DB9 signals.
• SDU-PMBRK: Chassis mounting brackets to secure the UPS to the wall, back of the panel, or enclosure.
Product Description
Figure 1 Figure 2
1. Output LED: Indicates the output status of the DC UPS. See Table 1.
2. Battery LED: Indicates the status of the battery module connected to the DC UPS. See Table 1.
3. Contact Relay Terminals: The control module incorporates dry relay contacts for remote signaling of the
UPS and battery module status.
4. Remote ON/OFF Terminals (R1 and R2): Turns the unit ON/OFF.
5. DC Input/Output Screw Terminal Connections: IP20 rated input and output screw terminals.

Page: 4
Figure 3 Figure 4
6. Polarized Terminal Connections for the Battery (+ Red color; - Black color).
Installation
Location
Install the power module and battery module in a protected area with adequate airflow and free of excessive
dust. Do not operate the UPS outdoors.
DIN Rail Mounting
1. Tilt and place the unit onto the DIN rail.
2. Push the unit downward until it stops.
3. Push at the lower front edge to lock. Ensure that the retainer has locked.
Removing the Unit from the DIN Rail
Push the button and swing the bottom out and up.
Figure 5

Page: 5
Optional Chassis Mounting
Optional chassis mounting brackets (P/N: SDU-PMBRK) are sold separately. Please refer to the installation
instructions supplied with the brackets.
NOTE: If you will be shipping the UPS already mounted, we recommend using the chassis mounting brackets
(P/N: SDU-PMBRK) to secure the UPS.
Figure 6

Page: 6
Figure 7
Figure 8

Page: 7
Figure 9

Page: 8
Connecting the Unit - Wiring Diagrams
SDU DC UPS B-Series with SDU 24-BATB
WARNING - Risk of electric shock!
Disconnect the DC input’s AC supply connection before wiring. Operate the UPS only from a properly
grounded (earthed) DC supply. To reduce the risk of electric shock, do not remove the cover. For
service, contact a qualified technician.
Figure 10
Connections:
1. Use the polarized cable to connect the power module to the battery module.
2. Connect the power module dc input connector to the 24 Vdc input power source.
3. Hardwire the load to the power module output terminal connector.

Page: 9
SDU DC UPS B-Series with SDU 24-BATEM
WARNING - Risk of electric shock!
Disconnect the DC input’s AC supply connection before wiring. Operate the UPS only from a properly
grounded (earthed) DC supply. To reduce the risk of electric shock, do not remove the cover. For
service, contact a qualified technician.
Figure 11
Connections:
1. Use the polarized cable to connect the power module to the battery module.
2. Connect the power module dc input connector to the 24 Vdc input power source.
3. Hardwire the load to the power module output terminal connector.
Charging the Battery

Page: 10
Operation
Turning ON the UPS (Normal Mode)
1. Ensure that the DC input supply is de-energized prior to wiring the DC UPS system.
2. Ensure that the Battery Module meets the charge schedule.
3. Ensure that the Remote ON/OFF toggle switch for R1 and R2 is open (if using Remote ON/OFF Bypass
Jumper, make sure it is disconnected).
4. Connect the DC input to the DC UPS module; connect the Battery Module to the UPS module; then,
connect the load to the UPS module.
5. Energize the DC input supply.
6. Enable the DC UPS by shorting R1 and R2 through the Remote ON/OFF toggle switch (if not using toggle
switch, insert the Remote ON/OFF Bypass Jumper).
7. This will start the UPS in Normal Mode.
Note: If the DC input supply is not present, the DC UPS will enable Battery Mode. The load will be powered
by the battery module until reaching cutoff voltage (21.6V). Please ensure switch is OFF or ON/OFF Bypass
Jumper is removed when UPS is not in use to prevent draining of the battery.
Turning OFF the UPS
1. Disable the DC UPS by disconnecting R1 and R2 through turning off the Remote ON/OFF toggle switch (if
not using a toggle switch, remove the Remote ON/OFF Bypass Jumper).
2. De-energize the DC input supply.
3. Disconnect the DC input supply, Battery Module, and the load.
Remote ON/OFF
Turns UPS output on when terminals R1 and R2 are shorted.
Figure 12
NOTE: The Remote ON/OFF is connected to the DC UPS internal signal ground and it should be isolated from
the chassis ground potentials that may cause unit malfunction or damage. Isolate the Remote Sense wiring
away from high current, high voltage, and high frequency components to prevent any magnetically coupled
noise on the Remote ON/OFF connections.
Self-Testing
The DC UPS employs an Automatic Self-Test feature. This feature checks the Battery Module’s health and
serves as indicator if the battery is still in good condition. The rst Self-Testing will be activated 5 hours after
commissioning. The subsequent Self-Testing will happen every 1 month thereafter. If the Battery Health fails
the Self-Test, the Battery LED will display Solid Red.

Page: 11
LED Status
Table 1
Operating MODE LED Signal
Load Condition / Control Module Status Output LED
NORMAL (input present)
Load Within Range (100% < Iout < 120%) Steady Green
Overload (125% – 150% for >4s) Power Boost Green Flashing
(0.25s ON : 0.25s OFF)
Overcurrent and Short Circuit Protection Red Flashing
(1s ON : 1s OFF)
Overtemperature Protection Steady Red
BATTERY (Input loss)
Battery Mode & Load Within Range Green Flashing
(0.5s ON: 0.5s OFF)
Overtemperature Protection Steady Red
Battery Condition Battery LED
NORMAL (input present)
Battery Full Steady Green
Battery Charging / <50% Capacity Green Flashing
(0.25s ON : 0.25s OFF)
Battery Charging / >50% Capacity Green Flashing
(1s ON : 1s OFF)
BATTERY (Input loss)
Battery Mode & Load Within Range OFF
Overtemperature Protection OFF
BATTERY FAULT Shorted Battery, Battery Overvoltage, reverse
polarity, end of life or no battery. Steady Red

Page: 12
Contact Relay Truth Table
Table 2
UPS Status
Low Battery On Battery Battery Fault
Pin 1-2 Pin 2-3 Pin 4-5 Pin 5-6 Pin 7-8 Pin 8-9
N.C. N.O. N.C. N.O. N.C. N.O.
Normal
mode OXOXOX
Battery
mode
(30-100%
SOC)
O X X O O X
Battery
mode - Low
Battery
(20-30%
SOC)
XOXOOX
Battery fault I I I I X O
Legend:
X – Contact close
O – Contact open
I - Indeterminate
N.C. - Normally close
N.O. - Normally open

Page: 13
UPS Battery
CAUTION
• Do not attempt to open the DC UPS or replace the batteries inside the battery module.
• Call SolaHD Technical Support for further instructions.
• Do not mount the DC UPS or the Battery Module in an upside-down orientation.
Battery Types
Table 3
Batteries for SDU-24 BATB
Manufacturer Type Rating
CSB HRL 1225W 12 V dc, 5.0 Ah
Taiwan Yuasa Battery Co. Ltd. NPX25
Table 4
Batteries for SDU-24 BATEM
Manufacturer Type Rating
CSB GP1272 12 V dc, 7.2 Ah
Recharging the Battery
Locate the recharge label on the box containing the product. The label will indicate the last recharge date.
Please refer to the label for the next recharge due date.
If the product is due for recharge, please follow the wiring diagram Figure 10 to recharge the SDU 24-BATB.
Please allow 8 hours to fully recharge a battery.
Once the battery is recharged, please create a LOG and track the due dates to properly maintain the charge.

Page: 14
Battery Backup Times
Table 5
SDU 10-24B with SDU 24-BATB
Load 20% (2 A) 40% (4 A) 60% (6 A) 80% (8 A) 100% (10 A)
1 unit 113 45 30 21 14
2 units 247 114 74 48 38
3 units 396 178 117 80 58
4 units 531 233 148 111 81
Table 6
SDU 20-24B with SDU 24-BATB
Load 20% (4 A) 40% (8 A) 60% (12 A) 80% (16 A) 100% (20 A)
1 unit 46 21 10 6 4
2 units 116 50 28 17 10
3 units 178 80 46 31 20
4 units 237 113 65 43 31
Table 7
SDU 10-24B with SDU 24-BATEM
Load 20% (2 A) 40% (4 A) 60% (6 A) 80% (8 A) 100% (10 A)
1 unit 135 52 28 19 14
Table 8
SDU 20-24B with SDU 24-BATEM
Load 20% (4 A) 40% (8 A) 60% (12 A) 80% (16 A) 100% (20 A)
1 unit 48 17 9 6 4
NOTE: Run times are based on new, fully charged battery module at a temperature of 25°C (77°F) with
purely resistive DC UPS load. Run times listed above may vary due to manufacturing variances of the
individual batteries.

Page: 15
Specifications
Table 9
Power Module Specifications
Parameter
Catalog Number
SDU 10-24B SDU 20-24B
Nominal Input Voltage 24 V dc
Efciency (Normal Mode) -
Battery Fully Charged >95% >95%
Efciency (BATTERY Mode) -
Battery Fully Charged >93% >93%
INPUT
Nominal Input Voltage 24V
Input Voltage Range 22.1 – 28.6 V dc
OUTPUT
Nominal Output Voltage 24 V dc
Output Voltage Range Ubat range: 22.1 – 28.6 Vdc maximum
Worst case: Ubat - 0.4 V DC = Uout
Output Ripple(Normal Mode)
Fully Charged Uin Ripple = Uout Ripple
Rated Output Current 10 A 20 A
Rated Output Power 240W 480 A
PROTECTION
Input Current Protection
(Normal Mode) Internally Fused 30A 32VDC
Peak current capability
(Normal Mode) Power boost (allows for 150% of rated load) for > 4 seconds
Reverse Polarity, input voltage UPS goes to battery mode
Reverse Polarity, battery input UPS does not turn on
Output Short Circuit UPS shutdown, Auto-recovery
Battery Over Voltage Protection Charging stops at 28V, Auto-recovery
Input Protection Allowable Input range is 21.6V min and 28.6V max.
or else UPS goes to Battery Mode
Back EMF Immunity, output < 35 V Max No damage, Auto-recovery
Overtemperature Protections Unit shutdown, Auto-recovery
WEIGHT & DIMENSIONS
Net Weight 0 .88 lb. (0.4 kg)
H x W x D 4.88 in. x 1.37 in. x 4.80 in. (124 mm x 35 mm x 121.9 mm)

Page: 16
Table 9
Power Module Specifications
Parameter
Catalog Number
SDU 10-24B SDU 20-24B
ENVIRONMENT
Audible Noise <40 dBA (1 m) distance
Operating Temperature -15°C to +50°C
Storage Temperature -40°C to +85°C
Humidity 0 to 95%, non-condensing
Pollution Degree 2
Maximum Elevation 3000m max
Shock According to IEC60068-2-27
Vibration According to IEC60068-2-6; DNVGL-CG-0339 Section 3
GENERAL
MTBF >1,000,000 hours; Telcordia SR-332 @ 40C
Life Expectancy >15 yrs. 50% load at 40C
>15 yrs. 100% load at 25C
INSTALLATION
Power Input/Output
Terminals (Screw Type)
Connector size range: 16-10 AWG
(1.5-6 mm2) for solid/stranded conductors.
Screw Torque: 4.4 -6.5 lb-in (50-73 N-cm)
Battery Terminals
Polarized Terminal Connections for the Battery
(+Red color, - Black color)
NOTE: The maximum length of the connection
between the power module and battery module is 6 ft. (1.85m).
Relay Contact Terminals Use connector size range: 24 – 16 AWG (0.34 – 4mm2)
Mounting Use DIN TS35/7.5 or TS35/15 rail system. Apply to both thin and thick
DIN Rail (1.0 and 1.5mm), optional screw mounting set SDU-PMBRK.
SAFETY APPROVALS
SDU DC UPS System*
cULus Listed: UL/CSA 61010-1, UL/CSA 61010-2-201
cRUus: UL Recognized Component UL/CSA 62368-1, UL/CSA 60950-1
CE LVD / UKCA EE (Safety) Regulations 2016 –IEC/EN 62368-1,
IEC/EN 61010-1, IEC/EN 61010-2-201 (CB Certied IEC/EN 60950-1)
CE EMC/ UKCA - EN 62040-2 Category C2, EN 55032, EN 55011,
EN 55024, EN 55035, EN 61000-6-1, EN 61000-6-2, EN 61000-6-3,
EN 61000-6-4, EN 61326-1, EN61000-3-2, EN 61000-3-3, I
EC/EN 61000-4 Series
*The SDU DC UPS system includes a power module (SDU 10-24B or SDU 20-24B)
and a battery module (SDU 24-BATB or SDU 24-BATEM).

Page: 17
Table 10
Battery Module Specifications
Parameter
Catalog Number
SDU 24-BATB SDU 24-BATEM
Nominal Voltage 24 V dc
Protection Fuse: 30 A Circuit Breaker: 24 V, 25 A
Charging Current 1.2 A
Battery Type Sealed, maintenance-free lead acid batteries
Enclosure Type IP20 NEMA 1
Terminal Connector Type Polarized power pole connectors
Operating Temperature -15°C to +50°C
Storage Temperature -15°C to +40°C
Humidity 95%, non-condensing
Typical Recharge Time
(to 90% of full capacity)
SDU 24-BATB: 6 hours for 2 battery modules; 3 hours for each additional
battery module SDU 24-BATEM: 8 hours for 1 battery module
Backup Times See Tables 5–8
Weight 11.46 lb. (5.2 kg) 16 lb. (7.26 kg)
Enclosure Dimensions 7.57 in. x 4.85 in. x 4.33 in.
(192.4 mm x 123.3 mm x 110 mm)
11.50 in. x 5.57 in. x 4.57 in.
(292 mm x 142 mm x 116 mm)
Mounting
Simple snap-on system for DIN rail
TS35/7.5 or TS35/15 or optional
chassis mounting brackets
(P/N: SDU-PMBRK)
Chassis mounting brackets
(P/N: SDU-PMBRK)
Accessories 1 ft (30.5cm) polarized
battery cable
6 ft (180cm) polarized
battery cable
*The SDU DC UPS B-Series system includes a power module (SDU 10-24B or SDU 20-24B)
and a battery module (SDU 24-BATB or SDU 24-BATEM).

Page: 18
Troubleshooting
Table 11
Troubleshooting
Problem Probable Cause Required Action
UPS has no output
Remote ON/OFF terminals (R1 and
R2) are not short circuited.
Insert REMOTE ON/OFF BYPASS
jumper to short circuit
the terminals.
Input DC voltage is not within the
acceptable range of 22.1V – 28.
6V and the battery is drained.
Check the DC input voltage.
If the input is within the range,
check the input fuse.
Load is short circuited Remove the load.
Other failure. Contact Technical Support.
UPS cannot turn ON
at Normal Mode
Loose input DC voltage
power connection.
Tighten the dc input
power connection.
Input DC voltage is not within
the acceptable range of
22.1V – 28. 6V.
Adjust dc input voltage
Other failure. Contact Technical Support.
UPS cannot turn ON
at Battery Mode
Battery is Drained
or not connected Connect or recharge battery.
Backup time is too short
Battery is not fully charged. Recharge the UPS for at least
three (3) hours.
Battery has low capacity
due to deterioration Replace the battery
Other failure. Contact Technical Support.
Display Steady Red at Battery LED
Battery is drained Recharge the battery for at least
three (3) hours.
Battery is disconnected. Check battery connections.
Other battery failure. Replace the battery.
SOLAHD Technical Support (USE STANDARD VERBIAGE)
For further assistance, please contact SolaHD Technical Support at 1.800.377.4384/1.847.268.6651
or by e-mail at solahd.technicalservic[email protected]om.