Communication
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Eaton 9355 UPS (20/30kVA) Installation and Operation Manual 164201626—Rev F
www.eaton.com/powerquality
The default and programmable settings for the signal inputs are shown in Table 5.
Table 5. Programmable Signal Inputs
Signal
Description
Disable 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 remain functional. 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 REPO or an alarm condition.
Force Bypass
If active, the UPS is forced to static bypass operation regardless of the bypass status.
External Battery Breaker Status
If 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 other building alarms.
Not in Use
Default
Shutdown
If active, the UPS shuts down immediately.
Delayed Shutdown
If active, the UPS shuts down after a user-configured delay time. Default shutdown delay is 120 seconds. The
UPS automatically restarts when the signal changes to inactive.
Normal/Bypass
If active, the UPS transfers to bypass if okay. If inactive, the UPS transfers to the inverter when possible.
On Generator
If active, the UPS knows that input is fed from the generator. Bypass is disabled; the automatic battery test is
disabled.
External Transformer Overtemperature
This option is not used.
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