Communication
Table 11. Programmable Signal InputsSignal | Description |
|
Disable Bypass Operation | If active, the automatic transfer to the static bypass is prevented. | |
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| |
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 | 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 | |
| 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 | This option is not used. | |
Overtemperature |
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64 | Powerware® 9155 UPS |