Alarm Status Field; Clearing An Over-Threshold Alarm; Ending A Session - Sentry PTPD-V0 Installation And Operation Manual

Alarm Status field

The display-only Control Status field indicates the PTPD 's current alarm state.
Alarm Status Field Values
Display
No Alarm
ALARM -> Over Threshold
ALARM (Cleared) -> Over Threshold
Power Tower PDU Version 1.0b
Location:
Input Current:
Alarm Status:
Threshold:
Press 'C' to clear Alarm
Press 'L' to edit Location
Press 'T' to adjust Threshold
Press 'Enter' to refresh
Figure 3.2 Example Control Screen in an over-threshold condition

Clearing an Over-Threshold Alarm

The over-threshold alarm may be cleared from the Control Screen or by pressing the Alarm Reset button.
Clearing the alarm resets both the audible alarm and the contact-closure alarm output.
NOTE: The alarm is automatically cleared if the Input Current returns to 1/8 ampere below the overload threshold.
To clear an alarm from the Control Screen:
Type c.
To clear an alarm using the reset button:
On the front of the PTPD, locate the recessed reset button directly below the Input Current LED. You
will need a non-conductive, non-metallic tool that fits inside the recess.
Insert the tool, then depress and hold the reset button until the audible alarm is silenced.
NOTE: The reset button should be released immediately after the audible alarm is silenced. Failure to release within 7
seconds will result in resetting the PTPD to factory defaults. See Appendix A: Resetting to Factory Defaults for more
information.
Power Tower PDU Version 1.0b
Location:
Input Current:
Alarm Status:
Threshold:
Press 'L' to edit Location
Press 'T' to adjust Threshold
Press 'Enter' to refresh
Figure 3.3 Example Control Screen with a cleared over-threshold condition.

Ending a Session

Sessions are ended automatically after each refresh of the Control Screen.
Sentry Power Tower Power Distribution Unit
Installation and Operations Manual
Description
Current PTPD load is under overload threshold setting.
Current PTPD load exceeds overload threshold setting.
Alarm reset - Current PTPD load exceeds overload threshold setting.
20.25 Amps
ALARM -> Over Threshold
20 Amps
20.25 Amps
ALARM (Cleared) -> Over Threshold
20 Amps
Operations (PTPD-x0 models only) • 11