Helios HPS-PS-STANDALONE-SR100HL User manual

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User’s Manual
SR100Hi Series - 100W DC UPS
No-BreakTM DC UPS
OPTIONAL FEATURES
STANDARD FEATURES
3 Relay Alarms-Form C
Float Charger –Lead Acid Baeries
ELVD : Electronic low voltage disconnect
Temperature Sensor on 1.7m lead with adhesive
pad: -4mV / °C /cell ±10%
N+1 Redundancy
Comms:
• RS232
• RS485
• Modbus RTU
• SNMP V1 & Webpages
Customizable Digital I/O
BCT: Baery Condion Test.
QUALITY POWER SOLUTIONS BACKED UP BY REAL-WORLD ENGINEERING EXPERIENCE
25/05/2020

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QUALITY POWER SOLUTIONS BACKED UP BY REAL-WORLD ENGINEERING EXPERIENCE
Table of Contents
1. SAFETY ……………………………………………………………………………………………………………………………………………………………...4
2. INTRODUCTION ………………………………………………………………………………………………………………………………………………… 5
3. SR100Hi Series - SYSTEM BLOCK DIAGRAM ……………………………………………………………………………………………………….5
4. OPERATION OF ELECTRONIC CIRCUIT BREAKER (ECB) FOR PROTECTION OF BATTERY CIRCUIT & BATTERY ……….5
5. FRONT PANEL LAYOUT ……………………………………………………………………………………………………………………………………...6
6. CONNECTION AND INITIAL TESTING ………………………………………………………………………………………………………………….7
7. LED INDICATION ……………………………………………………………………………………………………………………………………………….7
8. SR100Hi– DC SETTINGS ……………………………………………………………………………………………………………………………………8
9. SR100Hi– CONNECTIONS - Typical Examples …………………………………………………………………………………………….……9
10. MODEL CODING AND OPTIONS ……..…………………………………………………………………………………………………………...10
11. TECHNICAL SPECIFICATIONS…………………… ……………………………………………………………………………………………………11
12. CUSTOMISED MODELS ………………………………………………………………………………………………………………………………...12
13. TERMS OF WARRANTY ………………………………………………………………………………………………………………………………….12

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SR100Hi Series - 100W DC UPS
The user is responsible for ensuring that input and output wiring segregation complies with local standards and that in the use of the equipment,
access is confined to operators and service personnel. A low resistance earth connection is essential to ensure safety and additionally, satisfactory
EMI suppression (see below).
HAZARDOUS VOLTAGES EXIST WITHIN A POWER SUPPLY ENCLOSURE AND ANY REPAIRS MUST BE CARRIED OUT BY A
QUALIFIED SERVICEPERSON.
Electrical Strength Tests
Components within the power supply responsible for providing the safety barrier between input and output are constructed to provide electrical
isolation as required by the relevant standard. However EMI filtering components could be damaged as result of excessively long high voltage tests
between input, output and ground. Please contact our technicians for advice regarding electric strength tests.
Earth Leakage
Where fitted, EMC suppression circuits cause earth leakage currents which may be to a maximum of 3.5mA.
Ventilation
High operating temperature is a major cause of power supply failures, for example, a 10oC rise in the operating temperature of a component will
halve its expected life. Therefore always ensure that there is adequate ventilation for the equipment. Batteries in particular suffer shortened
lifetimes if subjected to high ambient temperatures.
Water / Dust
Every effort must be made in the installation to minimise the risk of ingress of water or dust. Water will almost always cause instant failure. The
effects of dust are slower in causing failure of electronic equipment but all electrical equipment should be cleaned free of any dust accumulation at
regular intervals.
Electromagnetic Interference (EMI)
Switching power supplies and converters inherently generate electrical noise. All wiring should be as short as practicable and segregated from all
equipment wiring which is sensitive to EMI. Residual noise can be reduced by looping DC wiring through ferrite cores (sleeves). These are most
effective as close to the power supply as possible and as many turns of the wire taken through the core (+ and - in the same direction) as the core
will accommodate.
External fuse protection
Fuses or circuit breakers must be used in all battery circuits to protect against short circuits. External fuses should be used for power supplies/
chargers even though they are usually internally protected.
Connection polarity
It is critical to check the polarity carefully when connecting DC devices even with models which have non-destructive reverse polarity protection.
1. SAFETY
Glossary of terms used in our user manuals
PSU = power supply unit BCT = baery condion test ECB = electronic circuit breaker
ELVD = electronic low voltage disconnect RPP = reverse polarity protecon EMI = electromagnec interference
SNMP = Simple Network Management
Protocol EMC = Electromagnec compability DOD = depth of discharge

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SR100Hi Series - 100 W DC UPS
2. INTRODUCTION:
The No-Break ™DC SR100Hi switch mode power supply is designed to provide DC power to lead acid baeries for crical
back up applicaons. No-Break ™ DC UPS systems maximise the integrity of standby baery installaons, whilst opmising the life
and availability of back up baeries.
3. SR100Hi Series - SYSTEM BLOCK DIAGRAM
4. OPERATION OF ELECTRONIC CIRCUIT BREAKER (ECB) FOR PROTECTION OF BATTERY CIRCUIT & BATTERY
The ECB will operate on overcurrent as above & is also acvated for the low voltage disconnect funcon on mains fail (no input pow-
er). It will reset when input power is restored, or can be manually reset by briey shorng the BAT- and LOAD- terminals together
when there is no input power.
BATTERY +
LOAD +
ILOAD
AC MAINS
POWER
OK LED
BATTERY
SYSTEM
OK LED
MAINS FAIL /
POWER SUPPLY
FAIL ALARM
BATTERY
SYSTEM
FAIL ALARM
LED
OFF
ALARM
OFF
LOAD -
BATTERY -
NORMAL OPERATION
LOAD CURRENT < PSU MAX CURRENT
ELECTRONIC
BREAKER
CIRCUIT
POWER CONVERSION
BATTERY
MANAGEMENT
& ALARM
CIRCUIT
BATTERY
CURRENT
SENSE
OUTPUT VOLTAGE, CURRENT
LIMIT & BATTERY CHARGE
CURRENT CONTROL ICHARGE
BATTERY TEMP.
SENSOR
REVERSE
POLARITY
FUSE
LED
ON
ALARM
OFF
8
6
2ms 300ms Time
6x I rated for 300ms max.
IPSU = 0
Short circuit condion,
ECB trips within 2ms
1.5 x I rated unl LV disconnect
operates
1.5
Max. allowable
load amps
(x I rated)
No Mains

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SR100Hi Series - 100W DC UPS
5. FRONT PANEL LAYOUT
1
23
4
5
6
7
1. AC Input IEC60320 - C13 10A
2. Digital Inputs (pins 1,2)/ Input or Output (pin 3)/ Return (pin 4) I/O terminals are customizable and if used, the product will
have a unique code.
3. Alarms Relay Form C
AUX : Acvated by BCT ( Baery Condion Test)
POWER:
• Loss of mains input power. This alarm has 30 seconds delay before acvaon upon mains failure.
• PSU fails
BATTERY:
• Baery Low: 1.8V/cell (for 2V cells) - operates only when no mains power present.
• Baery Missing or fault in baery circuit wiring (alarm does not acvate for up to baery detecon interval me.
• BCT fail
4. Load & Baery Connecon
5. LED indicaons Ba OK and Power OK (Mimics alarm condions above)
6. Comms Port (if installed)
• RS232 (ASCII) hps://www.heliosps.com/sr-series-downloads/#rs232-rs485-commands-sr-series
• RS485 (ASCII) hps://www.heliosps.com/sr-series-downloads/#rs232-rs485-commands-sr-series
• Modbus RTU hps://www.heliosps.com/sr-series-downloads/#serial-modbus-rtu-sr-series
• SNMP, Webpages hps://www.heliosps.com/sr-series-downloads/#snmp-sr-series
NOTES
Reverse polarity protecon
If the baery is connected in reverse, the internal baery protecon fuse may be ruptured and the unit should be re-
turned to the manufacturer for repair. If the fuse is good, the voltage measured as at step 3 above should be exactly the
same on both the load and baery outputs.

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SR100Hi Series - 100W DC UPS
6. CONNECTION AND INITIAL TESTING
1. Check input and output voltages of system, ensure that they match the equipment. All loads should be isolated.
2. Check polarity of all wiring. Place temperature sensor probe near or on baeries.
3. Plug in ac input and turn power on. Both LEDs will light up aer approx. 4 sec, “BATT OK” LED will go out aer another 10 secs
(since there is no baery connected). DC output voltage should appear at both load and baery outputs (ensure screws are
ghtened down on the connector block).
4. Turn o input power.
5. Connect baery.
6. Check that ELCB (internal electronic circuit breaker) closes by shorng together the BATTERY –ve and LOAD –ve terminals for
about 2-3 sec. You will hear a relay operate and both LEDs will light up. If this does not happen, there is a fault in the wiring or
the internal baery protecon fuse is ruptured (see Note 2 below). The baery voltage will then appear at the load terminals
and the “BATTERY OK” relay energises. The “POWER OK” LED stays on for about 30 seconds.
7. Connect load wiring to LOAD+ and LOAD- terminals. Check that the load does not exceed 110% of the unit. Any peak loads which
are > 110% must be connected to the B+ and B-terminals.
8. Turn on ac power.
9. Aer the baeries are fully charged, check that the baery connues to power up the load when the input power is turned o.
Power
OK LED
Baery OK
LED
Power
Alarm
Baery
Low Alarm Condion
Normal Normal System Normal: AC power is on, PSU output is OK, baery circuit is OK and baery voltage is > V Baery
Low.
Normal Normal Battery detection test imminent (LED begins flashing prior to test ).
Normal Alarm
System AC power is on, PSU output is OK but either:
1. Internal baery fuse has opened (only if baery has been reverse polarity
connected), or
2. Baery circuit open - baery missing, or fuse / circuit breaker / wiring fault.
Alarm Normal Either AC power has failed, or PSU has failed.
Baery system is OK
Alarm Alarm AC Power is o / DC has failed and baery has discharged to < V Baery Low, unit will connue delivering
baery current unl low level iniates ELVD.
Alarm Alarm AC Power is o / DC has failed and ELVD has acvated and disconnected baery from load. Residual
current drain on baery following ELVD <1 mA.
Normal Normal Baery Condion Test is in progress: LEDs ash alternately
Normal Alarm Baery Condion Unserviceable: failed to maintain terminal voltage during baery condion test
Please note that the last three conditions apply only if the battery condition test option is enabled.
LEGEND : OFlashingOn Flashing Slowly
7. LED INDICATION

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SR100Hi Series - 100W DC UPS
8. SR100Hi– DC SETTINGS
Parameter Default Sengs Actual sengs if dierent from default
V nominal 12 24 30 36 48
V output (20°C) 13.8 27.6 34.5 41.4 55.2
BatDetect (mins) 60 60 60 60 60
Vpres: 12.2 24.4 30.5 36.6 48.8
Vbatl: 11 22 27.5 33 44
Vshutd: 11.5 23 28.7 34.5 46
Vdisco: 10 20 25 30 40
Bccl (%) 100 100 100 100 100
Comms MMMMM
BCTim (mins) 20 20 20 20 20
CC Mins: 40 40 40 40 40
CC Hrs: 23 23 23 23 23
CC Days: 27 27 27 27 27
MBCT: 30 30 30 30 30
BatDetect: Time between baery detecons
Vpres: Voltage threshold for baery detecon and BCT. Note that if the voltage drops to this level dur-
Vshutd: Internal voltage level of the power supply during baery detecon and baery condion tests.
Vbatl: BAT LOW alarm voltage level
Vdisco: Voltage at which the load is disconnected from the baery during mains fail
Bccl: Baery charge current limit as percentage of the rated power supply current
Comms Communicaon mode of PSU: F = connuous data stream of status
BCTim: Length of baery condion test
CC Mins: Time in minutes between automacally scheduled BCTs
CC Hrs: Time in hours between automacally scheduled BCTs
CC Days: Time in days between automacally scheduled BCTs
Note: The total me interval between baery condion tests (BCTs) is the sum total of the three 'CC' sengs
MFiBCT: Time in minutes before the mains fail check during the BCT (only applicable to SR100)
Scheduled BCT disabled

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SR100Hi Series - 100W DC UPS
9. SR100Hi– CONNECTIONS - Typical Examples
• Standard No-Break™DC charger and baery bank
This is the basic connecon which is most commonly used, and provides adequate protecon for the majority of systems requiring
DC back up in the event of a mains power failure.
Note: On stud connected output models the L+/B+ is one stud labelled “+ COMMON”
Alarms Available
Input Fail YES
Baery Missing YES
Baery Low YES
Baery Condion Test Fail YES
ALARMS
=
ECB/
LVD
INPUT
L+
B-
L-
SRxxx Hi
B+
LOAD
• Peak load connecon using No-Break™DC charger
Peak loads which may exceed 1.5 x max. charger output can be connected to bypass the internal overcurrent trip circuit.
Alarms Available
Input Fail YES
Baery Missing YES
Baery Low YES
Baery Condion Test Fail YES
=
PEAK
LOAD
INPUT
NORMAL
LOAD
*LVD
* LVD oponal ( external to PSU)
L+,B+
B-
L-
ALARMS
COMMS
(SRxxx Hi models)
SRxxx Hi
ECB/
LVD

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• N+1 connecon using two complete No-Break™DC systems with each one capable of supplying the loads- posive common
Alarms available
Power OK YES
Baery missing YES
Baery low YES
Baery condion test fail *1YES
ALARMS
SRxxx Hi
ALARMS
L+ B+
B-
L-
INPUT
INPUT
=
L-
LOAD
=
SRxxxHi
ECB/LVD B-
ECB/LVD
BATT1
L+ B+
BATT2
*1 interlock circuit required for automated BCT (use SR100 Hi chargers)
10. MODEL CODING AND OPTIONS
T = Yes Blank = NoTemperature Compensation
12, 24, 30, 36, 48VDC output (nominal battery voltage)
Function
Optional Interface Port
485 = RS485 232 = RS232 LAN+=SNMP-Webpages 485+=Modbus RTU
Power 100W
X = Pluggable connectorOutput DC connector
SR100Hi 12 T X - 485+
HL = DC PSU/charger - 2 terminal output
Hi = No-Break™ DC UPS - 3 terminal output (separate battery output )

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SR100Hi Series - 100W DC UPS
11. Technical Specicaons
Output power 100W
Input Voltage 180V - 264VAC 45-65Hz
Output Voltages 12V, 24V, 30V, 36V, 48 VDC
Voltage Adj. Range 85% - 120% of Vnominal
Overcurrent protecon Constant current limit under overload and short circuit condions
Isolaon Input – earth – 2.5KVdc
Output – earth - 500Vdc
Eciency > 85%
Operang temperature -20 to 50 °C ambient at full load
Humidity 0 - 95% relave humidity non - condensing
Cooling Natural convecon
LVD Low Voltage Disconnect
LED Indicaon Green: Ba OK
Green: Power OK
Alarms Relay
Form C contacts 30VDC,2A/110VDC,0.3A,125VAC, 0.5A
AUX (Acvated by BCT)
POWER (main fails, PSU fails)
BATTERY (ba missing , ba low, BCT fail)
Temp. Compensaon Temperature sensor on 1.7m lead with adhesive pad: -4mV/ °C / cell ± 10%
Baery Charge Current Limit Customizable on request.
Reverse Polarity Baery reverse connecon will open internal fuse (and produce alarm)
Baery Monitoring Detects for presence of baery on start up, then every 60 minutes when charge current
< 200mA
Baery Circuit Protecon Electronic circuit breaker (ECB) operates under the following condions:
- Low Baery Volts: Baery Voltage drops to 1.67V/cell
Overload: Max load must not exceed 110% of rated current. Peak loads must be
connected to B+ & B– terminals. Not suitable for N+1 connecon.
Short Circuit: <2ms, backed up by fuse
Line Regulaon < 0.04% over AC input range
Load Regulaon < 0.5% open circuit to 100 % load
Noise < 0.3%
Thermal Protecon Yes, self-reseng
Hold-up Time 15 - 20 ms (nom - max. Vin) without baery
AC input connector IEC60320— C13 10A input socket (similar to PCs etc)
DC Connecons Plug-in style socket & mang screw terminal block: (max. wire 2.5mm² / way)
Alarm connecons Plug in screw terminal block
Enclosure Zinc plated & powder coated steel
Dimensions 147W x 177D x 62H (± 1mm)
Weight 0.95 Kg
STANDARDS
EMC To CISPR 22 / EN55022 class A
Safety To IEC950 / EN60950 / AS/NZS3260

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SR100Hi Series - 100W DC UPS
12. CUSTOMISED MODELS
Model code BASE MODEL SPECIAL FEATURES
Helios Power Soluons warrants this product for 24 months from date of shipment against material and workmanship defects. Liabil-
ity under this warranty is limited to the replacement or repair of the defecve product as long as the product has not been damaged
through misapplicaon, negligence, or unauthorized modicaon or repair.
13. TERMS OF WARRANTY