Eaton 9155 User Manual

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COMMUNICATIONEaton 9155 UPS (8–15 kVA) User's Guide 164201553 Rev G (www.eaton.com/powerquality)56Programmable Signal InputsThe UPS incorporates two programmable signal inputs (see Figure 36 on page 49).Use of non-polar (relay) control input is recommended. The pins must be shorted withmaximum resistance of 10 ohm in order to activate the specific input.NOTE See Figure 43 on page 54 for the polarity and verify these connections if polarity control is required.The default and programmable settings for the signal inputs are shown in Table 7.Table 7. Programmable Signal InputsSignal DescriptionDisable Bypass Operation If active, the automatic transfer to the static bypass is prevented.Charger Off If active, the battery charge function is disabled. In a utility power outage,the discharge of batteries is supported.Remote ON/OFF If active, the UPS output turns off regardless of the mode of operation.Auxiliary power, fan, communication, and rectifier/battery charger remainfunctional. Restart is initiated immediately when this signal is inactive.Request Bypass If active, the UPS transfers to bypass if the bypass voltage, frequency,and synchronization are all okay.Request Normal If active, the UPS transfers to inverter operation if not prohibited by REPOor an alarm condition.Force Bypass If active, the UPS is forced to static bypass operation regardless of thebypass status.External Battery BreakerStatusIf active, the UPS knows that the batteries are disconnected.Building Alarm 1–6 These alarms can be activated separately or at the same time with otherbuilding alarms.Not in Use DefaultShutdown If active, the UPS shuts down immediately.Delayed Shutdown If active, the UPS shuts down after a user-configured delay time. Defaultshutdown delay is 120 seconds. The UPS automatically restarts when thesignal changes to inactive.Normal/Bypass If active, the UPS transfers to bypass if okay. If inactive, the UPStransfers to the inverter when possible.On Generator If active, the UPS knows that input is fed from the generator. Bypass isdisabled; the automatic battery test is disabled.External TransformerOvertemperatureThis option is not used.