Chapter 4
4-7
Power-On/Power-Off Procedures
Emergency Power Off (EPO) Connections
Emergency Power Off (EPO) Connections
A pair of terminals is provided for connection to an EPO system. For normal operation, the
terminals must be connected by a jumper or connected to a normally closed EPO switch.
If the terminals are not connected together, or the EPO switch has been activated (opened),
the UPS will shutdown AC output power to the output receptacles in On-line mode,
On-battery mode, or Automatic Bypass mode. The AC output will remain shut off until the
terminals are connected together again or the EPO switch is closed and the Output
On/Output Off switch is cycled OFF and then ON.
In Service Bypass mode, input AC power is routed directly to the output receptacles,
bypassing the Electronics Unit, and the EPO connection will have no effect on the output
power from the UPS. Output power will be present at the receptacles whenever input
power is provided to the UPS.
Содержание PowerTrust A3589A
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Страница 14: ...2 ...
Страница 20: ...Preface 8 ...
Страница 22: ...Preface 10 ...
Страница 52: ...1 30 Chapter1 Overview Specifications Figure 1 8 UPS Input Voltage Transfer Points ...
Страница 56: ...1 34 Chapter1 Overview UPS Modes Figure 1 10 Simplified UPS 5 5 kVA UPS Block Diagram ...
Страница 62: ...1 40 Chapter1 Overview Support Information ...
Страница 76: ...2 14 Chapter2 Unpacking and Inspecting Shipping and Storage Requirements ...
Страница 104: ...3 28 Chapter3 Installing the UPS Examples of PowerTrust Connections in a System ...
Страница 116: ...5 4 Chapter5 Verification Procedures Load Testing ...
Страница 148: ...7 6 Chapter7 Cleaning and Maintenance Exchanging Batteries Fan ...
Страница 190: ...A 42 AppendixA HP UX UPS Monitor Error Messages Log Only Messages ...
Страница 218: ...C 8 AppendixC Configuring the OS for the PowerTrust UPS Power Failing the UPS ...