Configuring the Interface Expander continued
Until Low | Until Low Battery shutdown mode is similar to the standard |
Battery | operation of the UPS. During a utility failure, the Interface |
shutdown mode | Expander allows the UPS to run on battery until utility |
| power is restored, or until the battery is exhausted. If the |
| Interface Expander detects a UPS Low Battery condition, it |
| sends a Low Battery signal on all ports for a period of time |
| equal to the Low Battery Signal Time and then shuts down |
| the UPS. |
| If utility power returns after the Low Battery timer has |
| begun, the Interface Expander will continue the countdown |
| and force the UPS to cycle power. |
| This mode is useful for applications which require maxi- |
| mum run time. |
|
|
Timer shutdown | In Timer shutdown mode, the Interface Expander allows the |
mode | UPS to operate on battery for a |
| before shutting down the UPS. See “DIP switches: Table 5” |
| on page 19 for the available timer settings. |
| If power returns before the timer has run out, the Interface |
| Expander returns to On Line status. When the timer runs out |
| or when the Interface Expander detects a Low Battery con- |
| dition in the UPS, the Interface Expander sends a Low |
| Battery signal for a period of time equal to the Low battery |
| signal time and then shuts down the UPS. |
| Note: If you are using PowerChute software, set the shut- |
| down delay for a time longer than the Interface |
| Expander timer setting. Otherwise, if the power |
| returns after the server shuts down, the server may |
| not restart. To set the shutdown delay, go to Configu- |
| rationEvent Actions and select UPS On Battery |
| from the Event list and Shut Down Server in the |
| Action box. Click Options and enter a setting for |
| Begin Shutdown Sequence in __ Seconds. Click OK. |
|
|
| Continued on next page |
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