HELIOS SR500HL Power Supply or Float Charger User Manual
- June 9, 2024
- HELIOS
Table of Contents
- HELIOS SR500HL Power Supply or Float Charger
- STANDARD FEATURES
- OPTIONAL FEATURES
- SAFETY
- INTRODUCTION
- FRONT & BACK PANEL LAYOUT
- LED INDICATIONS CODE
- ALARM TERMINAL LAYOUT
- COMMS PORT
- FG – FRAME GROUND
- MODEL CODING AND OPTIONS
- N+1 REDUNDANCY
- CONNECTION NOTES
- TECHNICAL SPECIFICATIONS
- OPTIONS
- PHYSICAL
- H-SERIES INTERNAL METER OPTION
- CUSTOMISED MODELS
- TERMS OF WARRANTY
- References
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
HELIOS SR500HL Power Supply or Float Charger
HELIOS SR500HL Power Supply or Float Charger-FEATUTERD
STANDARD FEATURES
- 3 Relay Alarms-Form C
- Float Charger –Lead Acid Batteries
OPTIONAL FEATURES
- Comms:
- RS232
- RS485
- Modbus RTU
- NMP V1 & Webpages
- Customizable Digital I/O
- Temperature Sensor on 1.7m lead with adhesive pad: -4mV / °C /cell ±10%
- N+1 Redundancy
- Rack Mounting
- Internal Meter
SAFETY
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.
Glossary of terms used in our user manuals
- PSU = power supply unit
- ELVD = electronic low voltage disconnect
- SNMP = Simple Network Management Protocol
- BCT = battery condition test
- RPP = reverse polarity protection
- EMC = Electromagnetic compatibility
- ECB = electronic circuit breaker
- EMI = electromagnetic interference
- DOD = depth of discharge
INTRODUCTION
The SR500HL range is designed for use as a reliable and stable AC to DC power supply, or float charger for lead acid batter-ies. Note that for float charging the output voltage must be set to approximately 15% above the nominal battery voltage models. This is done as the default voltage for the 12V model but must be specified at time of order for all higher voltage models.
FRONT & BACK PANEL LAYOUT
-
AC INPUT IEC60320 – C13 10A
-
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.
-
ALARMS RELAY FORM C: Relay contacts shown in de-energised state (ie. When there is a fault condition). Alarm relays are ener-gised when power supply is operating normally, eg. “Power” alarm relay is energised when input voltage present.
• DC HIGH: DC Output High.
• POWER: Loss of mains input power. This alarm has 30 seconds delay before activation upon mains failure. PSU fails
• DC LOW: DC Output Low or Battery voltage low if used as a charger.
• Fan Fail/Stall: There are two fans inside the SR500HL unit and will give an alarm with one or both of the fan is stalled or failed. When fan is stall/fail alarm occurs is display through the DC high alarm relay ( DC high relay will toggle every 5 sec-onds) and slow flashing of the POWER OK LED. If a fan fail/stall occurs at the same time as DC High, the relay will activate like normal, but every 5 seconds it will toggle showing fan fail/stall alarm. -
DC CONNECTIONS: M8 brass stud (shown on the picture above ), plug-in style phoenix socket & mating screw terminal and plug-in style Anderson connector options. Where screw/plug in terminals are fitted both terminals must be used if the power supply current exceeds 20A. This is to ensure that the current rating.
LED INDICATIONS CODE
DC OK: DC output is present, either from PSU or battery POWER OK: Mains fail and/ Or internal PSU fail. STANDBY: Power supply unit off
ALARM TERMINAL LAYOUT
Relay contacts shown in de-energised state ( ie when there is a fault condition). Alarm relay are energised when power supply is op-erating normally. DC OK alarm indicates either DC low or DC high.
COMMS PORT
- RS232 (ASCII) https://www.heliosps.com/sr-series-downloads/#rs232-rs485-commands-sr-series
- RS485 (ASCII) https://www.heliosps.com/sr-series-downloads/#rs232-rs485-commands-sr-series
- Modbus RTU https://www.heliosps.com/sr-series-downloads/#serial-modbus-rtu-sr-series
- SNMP, Webpages https://www.heliosps.com/sr-series-downloads/#snmp-sr-series
Note: A battery is required on the output for the communications to continue working in the event of an input/internal converter failure.
FG – FRAME GROUND
Where provided this terminal provides a connection to the metal case for earthing.
MODEL CODING AND OPTIONS
N+1 REDUNDANCY
An external diode is required for N+1 redundancy or parallel applications. A diode and DC Power Supply can be installed in a 2U Rack as shown in the picture below. Please contact our sales technical engineers so we can configure a DC Power Solution according your specific requirements.
CONNECTION NOTES
- The models with the screw/unpluggable connectors have two terminals per polarity, each one is rated at 20A and so when the load current exceeds 20A both terminals must be used.
- If used as a battery charger ensure that the battery polarity matches the power supply /charging output.
- Alarms can be tested by using an external variable voltage supply.
TECHNICAL SPECIFICATIONS
OPTIONS
PHYSICAL
STANDARDS
EMC To CISPR 22 / EN55022 Class A
Safety To IEC950 / EN60950 / AS/NZS3260
H-SERIES INTERNAL METER OPTION
SR500H & SR750H L & I models both have the internal meter option and the
parameters displayed vary depending on the model.
The H-Series internal meter shows the status of the PSU and Battery (just for
HI models) which has certain meanings. Check below each one of them to
understand the information displayed.
Code A:
- CC – charge cycle (normal operation)
- MF – mains fail (mains failure, system on battery power)
- OL – system overloaded, output voltage is below Vpres setting
Code B:
- M? – possible mains fail, ie. No mains detected but brown out timer not expired (30sec) BP – System OK
- BM – DC Low alarm
- BL – DC High alarm
Displayed values following Code B:
- Vout = output voltage of PSU
- Ibat = for HL models (2 terminal DC Power Supply) it will be always 0. Ipsu = Total PSU output current
+20oC = temperature measured by temp. sensor
CUSTOMISED MODELS
TERMS OF WARRANTY
Helios Power Solutions 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 defective product as long as the product has not been damaged through misapplication, negligence, or unauthorized modification or repair.
New Zealand: sales@heliosps.co.nz
Australia: sales@heliosps.com.au
Middle East & Asia: sales@heliosps.asia
References
- Helios Power Solutions International - DC Solutions Partner
- SR Series - Downloads | Helios Power Solutions International
- SR Series - Downloads | Helios Power Solutions International
- SR Series - Downloads | Helios Power Solutions International