OSSI Overland Safety Systems

The MC-PWR-RM as part of OSSI’s global series products utilizes electronic security devices SPS-6.5M4 series power supply in a OSSI custom enclosure to power the MC-ENC-RM. The power supply was specifically selected because of it’s near linear performance characteristics. The performance characteristics are similar to those found in most computer power supplies. Clean Linear performance is especially important when utilizing the MLC-32I analog input capability. The universal input from 85Vac to 260Vac allow them to be used anywhere in the world without adjustments to the power input. The power supply is fully self contained and isolated from the line and ground to EN1650 world safety standards. The SPS-6.5 power supply becomes an uninterruptable supply when a stand by battery is mounted and connected in the space provided in the lower portion of the enclosure. The power supplies are engineered with a power limiting circuit that allows for battery float charging to occur without on/off noise on the power output. The battery is protected with a diode for reverse polarity connection and an automatic resetting circuit breaker for over current protection. The power supply supports back up batteries from 4 Amp hours to 200 Amp hours. Form C relays are provided on board for alarm indication of low batteries as well as AC power fail. The power supply has a 3rd relay on board to disconnect battery power at end of life to avoid battery damage or fire due to extremely high current draw from low battery voltage.

Features:

• Enclosure:
• Powder coated 14ga steel construction.
• Removable door for increased flexibility when terminating.
• Support for up to (2) ENC-RM racks for input/output logic controllers.
• Power:
• Clean linear performance
• Universal Input: 85Vac to 264Vac
• Self contained
• Precision output charging regulation
• On board outputs are class II power
• Limited with PTC circuit breakers
• Indication LED’s for AC and DC power
• AC Fail form C contacts
• Low battery indication form C contacts
• Battery cut off relay for deep discharge prevention
• Battery float charging for rapid recharging
• Short circuit and thermally protected
• The internal power supply is UL and CUL Listed: UL603, UL294,UL1481and NFPA72, EN60950, and EN61204-Class A compliant

Specifications:

• AC Input: 85-260VAC/47-63Hz/150W. Universal AC input does not require any selection switching. Earth ground terminal must be connected to earth ground.
• AC LED Indicator: LED Green
• AC Line Fuse Link: Inside unit for catastrophic failure. This fuse is not field replaceable. A blown fuse would be indicated by the AC LED off with AC power applied.
• DC Output: 2P Terminal block 28-12AWG
• Nominal Voltage: 12VDC
• Typical Voltage: 13.65VDC
• Class II PTC Circuit Breakers rating: 720MA
• Class II PTC circuit breakers rating: 1.50A
• Typical Output Ripple & Noise: Peak to Peak: 25MV
• Battery PTC Protection: 6A
• Switching Frequency: 27KHz
• Low battery trip: 11.0 VDC