CS141 Settings for Center Tap

For this setting, you need to use a UPS with a center tap.

For setting up this special function, navigate to the following menus:

This configuration menu is a little bit unusual. On the one hand it is a UPS menu, on the other hand there is a limited purpose in how to use this function. Therefore, it was filed under the custom thresholds.

Note:

This configuration only makes sense if you explicitly use a UPS with a center tap. This article only covers this one aspect of the custom thresholds – for more information, please refer to the CS141 manual in the chapter “Custom Thresholds” or at the corresponding Help Center Article: Custom Thresholds.

First click on Custom Thresholds in the UPS configuration menu and enable this function:

This option enables the monitoring of the general voltage difference - The CS141 looks at both string voltages and determines the general difference between them. If the argument "greater than" applies, an alarm condition exists. This alarm condition is a UPS event to which jobs can be assigned to.

Choose your alarm notification state:

You can choose between triggering a single alarm event or enabling a two-stage response with a warning followed by an alarm. If you only want a single note, just activate the warning state. Otherwise use warning and alarm notification. Please note that the alarm condition always represents the escalated system state of a warning.

Warning – the „yellow alert“

If enabled, the CS141 issues a warning as soon as the two lines have left the configured voltage range. This warning is active as long as the problem persists. Since the voltage drift is a dynamic process, you may receive the warnings in certain phases of use and need to decide if further evaluation of the information is necessary.

Alarm – the „red alert“

The alarm can be switched independently of a warning - so if you want to have a warning first and then an alarm, the alarm value must be higher than for the warning (e.g. with a 3 volt drift, the warning is active, an alarm is triggered at 5 volt). 

Adding a job

Since these are user-defined UPS events, they are displayed like standard UPS events in the system. In order to receive a reaction to these events, so-called jobs have to be stored in the UPS "Events" menu. To do this, click on the UPS "Events" menu.

The activated custom thresholds can be found as events in the UPS list. As a default, only a log entry configured. Click + to add a new job. Please note that some jobs include external accessories, software clients or further configurations such as need an accessible mail server.

Note:

A detailed description how to configure the event control handling can be found in the Help Center Article Event handling  or in the CS141 manual.