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Esd sps-5 24VDC power supply/charger
SPS-5 24VDC 5A Supervised Power Supply/Charger module
The SPS-5 and SPS-10 are part of our SPS-510 Series Linear performance power supplies. They are clean, efficient, heavy duty, low frequency off line switching power supplies with battery charger and power supervision. Even though the wattage is the same for both the SPS-5 5 Amp 24vdc and the SPS-10 10 Amp 12vdc, we offer separate 12V and 24V models for optimum performance. The SPS-510 series use a very low switching frequency of 23KHz, just above our hearing range. This, coupled with extensive filtering, provides a balance of super clean power. This design eliminates interference problems with proximity readers and can be used wherever a linear power supply is required. The universal AC input works all over the world. The SPS-510 s become an uninterruptible power supply when a stand-by battery(s) is connected with the supplied cable. These supplies have a special power limiting circuit that allows the batteries to be float charged across the output without lock up or chirping on and off. The battery(s) is protected with an automatic resetting circuit breaker and diode for over current and accidental reversed battery hookup. Precision float charging means faster recovery time and longer life for the battery(s). There is no switch over or voltage drop when input power fails. Standby battery(s) can be any capacity between 4 and 400 Amp hours. The SPS-5 24vdc is rated for 4 Amps continuous current with 1 Amp reserved for battery charging while the SPS-10 12vdc is rated for 8 Amps continuous current with 2 Amps of current for battery charging.
Power Supervision includes a battery(s) disconnect relay to prevent deep discharge and a separate power trouble alarm relay. The power trouble alarm relay output, form C contacts, can be used to signal a buzzer and/or other signaling device. Both relays are normally energized for fail-safe operation. The trouble relay has a green LED that is on when power is good. The relay will drop off of normal when the standby battery(s) reaches about 70% of capacity. This low voltage indication represents low battery and/or AC power failure. High voltage or over heated failure will also indicate power trouble.
A Service Switch (not on CE models). Switch allows the DC output to be turned off for service.
The Fan power header provides power for the Smart Fan when mounted in our standard large enclosure. The Smart Fan regulates the temperature in the enclosure by varying the fan speed to keep the temperature below 125oF. The fan is not required for proper operation; however it adds reliability by reducing operating temperature under extreme conditions.
The /F option operates the same way as enclosure smart Fan; but it is a smaller fan mounted inside the module. This option is for the module when used in high heat situations such as a SPS-510/F mounted in one of our outdoor rain tight boxes in a harsh environment.
