HP Carrier-grade cc3300 User Information and Service Guide - HP Carrier-Grade - Page 32
Interface Requirements, Power Supply Module LED Indicators, DC Input Voltage Specification
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Interface Requirements DC Input The DC power source may produce hazardous voltage levels exceeding -60 VDC and high energy levels above 240 VAC that may cause electric shock. All DC input connections should be made only by a qualified service person to prevent injury. All wiring terminals connected to the DC input terminal block must be fully insulated with no exposed bare metal. DC Output Connectors The power subsystem DC power and control signals are interfaced to the server via wire harnesses when the power supply modules are inserted into the power subsystem enclosure. The safety ground pin of the power supply module is the first pin to connect and the last to disconnect when the module is being inserted or removed from the power subsystem housing. In addition to the 5-V Standby, -12V, +3.3V, +5V and +12 VDC outputs, the following signals and output pins are included: • +3.3 VDC remote sense • +5 VDC remote sense • +12 VDC remote sense • Remote sense return • Power subsystem on (DC PWR enable) • Power good • I2C interface chip (PS Failure, PS Presence, PS Predictive Fail, +12V Mon, +5V Mon, and the 5V Standby rails failure are being monitored via an I2C interface chip) Power Supply Module LED Indicators There is a single bi-color LED to indicate power supply status that is visible on the back of the server. Table 3-2 shows the conditions confirmed by the LED indicators. Table 3-2. LED Indicators Power Supply Condition No DC power to all PSUs No DC power to this PSU only DC present/only standby outputs on Power supply DC outputs on and ok Current limit Power supply failure (OTP, OCP, OVP, UV) Power Supply LED OFF AMBER BLINK GREEN GREEN AMBER AMBER DC Input Voltage Specification The power supply will operate within all specified limits over the input voltage range outlined in Table 3-3. The power supply will power-off if the DC input is less than -34 VDC. Table 3-3. DC Input Rating Minimum Nominal Maximum Maximum 32 Chapter 3