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 ............................................... 2
Optional Accessories ....................................... 2
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
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
Charging/Recharging the Battery .................. 13
Battery Backup Times (Minutes [min.])...... 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 ....................... 18
Troubleshooting........................................ 19
Troubleshooting ............................................ 19
SOLAHD Technical Support............................ 19
Storage ..................................................... 20
Extended Storage ......................................... 20
Technical Support...................................... 21
Warranty .................................................. 21
Warranty Information.................................... 21
Product Literature ......................................... 21

Page: 1
Safety Instructions
IMPORTANT - READ AND FOLLOW THE SAFETY INSTRUCTION SHEET THAT IS PROVIDED WITH THE
SDU 10-24B, SDU 20-24B, SDU 24-BATB OR SDU 24BATEM MODULES. THESE INSTRUCTIONS MUST BE
FOLLOWED DURING INSTALLATION, OPERATION, MAINTENANCE AND DISPOSAL OF THE UNIT.
WARNING - Explosion Hazard, Risk of Electric Shock, Fire
and Personal Injury
Follow all warnings on the product, in the Safety Instruction Sheets and in this manual. Failure to do so
may result in serious injury or death.
Document Part No.
Safety Instruction Sheet – SDU 10-24B, SDU 20-24B DC Uninterruptible
Power Supplies
A272-367
Safety Instruction Sheet – SDU 24-BATB DC Uninterruptible Power Supply
Battery Module
A272-368
Safety Instruction Sheet – SDU-BATEM DC Uninterruptible Power Supply
Battery Module
A272-369

Page: 2
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
Battery Options
Two battery modules are available:
• SDU 24-BATB: 24 V DIN rail/panel mount battery module (cable and Safety Instruction Sheet 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 and Safety Instruction Sheet 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 24EXTBC1B: 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.
• SDU 24EXTBC6B: 6ft (182.9 cm) external battery module cable.

Page: 3
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.
Figure 3 Figure 4
6. Polarized Terminal Connections for the Battery (+ Red color; - Black color).

Page: 4
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
Table 1
Catalog Number Dimensions - Inches (mm)
H W D
SDU 24-BATEM 11.50 (292.0) 5.60 (142.0) 4.60 (116.0)

Page: 6
Figure 7
Table 2
Catalog Number Dimensions - Inches (mm)
H W D
SDU 24BAT-B 4.88 (124.0) 7.60 (192.4) 4.33 (110.0)

Page: 7
Figure 8
Table 3
Catalog Number Dimensions - Inches (mm)
H W D
SDU 10-24-B /
SDU 20-24B 4.88 (124.0) 1.37 (35.0) 4.36 (111.0)
Figure 9

Page: 8
Connecting the Unit - Wiring Diagrams
SDU DC UPS B-Series with SDU 24-BATB
WARNING - Risk of electric shock and energy hazard!
Refer to the Safety Instruction Sheet provided with the products.
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.
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.
Legend
A - DC Power Supply
B - DC UPS Power Module
C - DC UPS Battery Module
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 and energy hazard!
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.
WARNING - Risk of explosion.
The SDU 24-BATEM Battery Module IS NOT FOR USE IN A HAZARDOUS LOCATION ENVIRONMENT. Do
not install the SDU 24-BATEM in a hazardous location environment.
Legend
A - DC Power Supply
B - DC UPS Power Module
C - DC UPS Battery Module
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.

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 4
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 5
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 6
Batteries for SDU-24 BATB
Manufacturer Type Rating
CSB HRL 1225W 12 V dc, 5.0 Ah
Taiwan Yuasa Battery Co. Ltd. NPX25
Table 7
Batteries for SDU-24 BATEM
Manufacturer Type Rating
CSB GP1272 12 V dc, 7.2 Ah
WARNING - Battery Disposal
Do not dispose of batteries in a fire; they may explode. Do not open or mutilate the battery.
Released electrolyte is harmful to skin and eyes and may be toxic. Proper disposal of batteries is
required. Refer to your local laws and regulations for disposal requirements.
Charging/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 (Minutes [min.])
Table 8
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 min. 45 min. 30 min. 21 min. 14 min.
2 units 247 min. 114 min. 74 min. 48 min. 38 min.
3 units 396 min. 178 min. 117 min. 80 min. 58 min.
4 units 531 min. 233 min. 148 min. 111 min. 81 min.
Table 9
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 min. 21 min. 10 min. 6 min. 4 min.
2 units 116 min. 50 min. 28 min. 17 min. 10 min.
3 units 178 min. 80 min. 46 min. 31 min. 20 min.
4 units 237 min. 113 min. 65 min. 43 min. 31 min.
Table 10
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 min. 52 min. 28 min. 19 min. 14 min.
Table 11
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 min. 17 min. 9 min. 6 min. 4 min.
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 12
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
Contact Relay 50Vdc, 0.2A 50Vdc, 0.2A
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 480W
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 12
Power Module Specifications
Parameter
Catalog Number
SDU 10-24B SDU 20-24B
ENVIRONMENT
Audible Noise <40 dBA (1 m) distance
Operating Temperature Ordinary Location: -15°C to +50°C
Hazardous Location: -15°C to +40°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
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
Connector size range: 10-14 AWG (5.3-2.1 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)
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.

Page: 17
Table 12
Power Module Specifications
Parameter
Catalog Number
SDU 10-24B SDU 20-24B
SAFETY CERTIFICATIONS
SDU DC UPS System*
Hazardous Locations (except SDU 24-BATEM):
Recognized - UL121201/CSA 213 Class I, Division 2
Groups A B C D T4, UL/CSA 60079-0, UL/CSA 60079-7,
UL/CSA 60079-15 Class I, Zone 2, Groups IIC
UKCA and CE Ex Certified:
EN IEC 60079-0, EN IEC 60079-7, EN IEC 60079-15
SDU 10-24B, SDU 20-24B - II 3 G Ex ec nC IIC T4 Gc, UL 22 ATEX 2553X,
UL22UKEX2393X
SDU 24-BATB - II 3 G Ex ec IIC T4 Gc, UL 22 ATEX 2553X,
UL22UKEX2393X
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/UKCA EMC - EN 62040-2 Category C2, EN 55032, EN 55011,
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
See Note 1 below- UL Recognized UL121201/CSA 213 Class I,
Division 2 Groups A B C D T4
See Note 1 below- ATEX/UKCA – EN IEC 60079-0, EN IEC 60079-7,
EN IEC 60079-15
Models SDU 10-24B, SDU 20-24B - II 3 G Ex ec nC IIC T4 Gc
Model SDU 24-BATB - II 3 G Ex ec IIC T4 Gc
*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).
Note 1-
WARNING - Risk of explosion.
The SDU 24-BATEM has not been evaluated for use in any hazardous location and cannot be installed
in a Class I, Div 2 or Class I, Zone 2 hazardous location. Do not install in a hazardous location!

Page: 18
Table 13
Battery Module Specifications
Parameter
Catalog Number
SDU 24-BATB SDU 24-BATEM
(see Note 1 below)
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
Ordinary Location: -15°C to +50°C
Class I, Div 2/ Zone 2
Hazardous Location: -15°C to +40°C
N/A
Not for use in
a hazardous location.
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).
Note 1-
WARNING - Risk of explosion.
The SDU 24-BATEM has not been evaluated for use in any hazardous location and cannot be installed
in a Class I, Div 2 or Class I, Zone 2 hazardous location. Do not install in a hazardous location!