HELIOS SR500HL Power Supply or Float Charger User Manual

June 9, 2024
HELIOS

HELIOS SR500HL Power Supply or Float Charger

HELIOS SR500HL Power Supply or Float Charger-FIG1

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

HELIOS SR500HL Power Supply or Float Charger-FIG10

  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: 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.

  4. 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.

HELIOS SR500HL Power Supply or Float Charger-FIG11

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

HELIOS SR500HL Power Supply or Float Charger-FIG12

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

FG – FRAME GROUND

Where provided this terminal provides a connection to the metal case for earthing.

MODEL CODING AND OPTIONS

HELIOS SR500HL Power Supply or Float Charger-FIG14

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

HELIOS SR500HL Power Supply or Float Charger-FIG17

OPTIONS

HELIOS SR500HL Power Supply or Float Charger-
FIG18

PHYSICAL

HELIOS SR500HL Power Supply or Float Charger-
FIG19

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

HELIOS SR500HL Power Supply or Float Charger-FIG20

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.

www.heliosps.com

New Zealand: sales@heliosps.co.nz
Australia: sales@heliosps.com.au
Middle East & Asia: sales@heliosps.asia

References

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