Alarm Output Relays | American Power Conversion MX28B600 specification

MX28B600-48V

6.3External Alarm Inputs

The four external alarm inputs (also referred to as “Input Relay Alarms”) can be assigned a priority and routed or “mapped” to alarm output relays. Available assignments are “Ignore”, “Major”, “Minor”, and “Relay 1” ∙∙∙ “Relay 6”. Screens for making the assignments are located at [SYSTEM/IN-RLY/RLY-MAP]. A user defined name or “alias” may also be assigned to each of these input alarms. Screens for making these assignments are located at [SYSTEM/IN-RLY/ALIAS]. For information on wiring connections to these inputs refer to Section 5.6.1.

6.4Alarm Output Relays

There are eight alarm output relays designated Relay 1 through Relay 6, Minor, and Major, respectively. Various system parameters may be programmed to activate any of these alarm relays when set thresholds are exceeded or specific conditions occur. The first six relays can also be assigned a priority and routed or “mapped” to other output alarm relays. Available assignments are “Ignore”, “Major”, “Minor”, and “Relay 1” ∙∙∙ “Relay 6”. Screens for making these assignments are located at [SYSTEM/OUT-RLY/RLY-MAP]. This feature makes it possible for a single alarm condition to activate multiple alarm output relays including the Minor or Major alarm relay. A user defined name or “alias” may also be assigned to each of the eight output relay alarms. Screens for making these assignments are located at [SYSTEM/OUT- RLY/ALIAS]. For information on making wiring connections to the alarm output relays refer to Section 5.6.2.

6.5Parameter Locations, Descriptions, and Default Values

The location, description, and factory programmed default value for each of the MX28B600 system parameters is found in The table also shows all of the status and information screens with typical displays. The location of a parameter screen is shown in brackets, for example:

[SYSTEM/IN-RLY/RLY-MAP]. To find the parameters that can be accessed in this category, starting from the main menu screen, do the following:

1)Use the right or left arrow keys to position the cycling cursor below “SYSTEM”.

2)Press the down arrow key once.

3)Use the right arrow key to position the cycling cursor below “IN-RLY”.

4)Press the down arrow key once; the cursor will be cycling below “RLY-MAP”.

5)Press the down arrow key (repeatedly if necessary) until the desired parameter screen is displayed (there are eight parameter screens in this category).

6)After making any desired changes (refer to Section 6.1 for the procedure), to return to the main menu press the up arrow key repeatedly.

If a parameter requires a level 1 or level 2 security access to permit changes to it, the security level will be found in braces, i.e. {2}, in the “PARAMETER” column of table 6.4.1.

The complete menu structure shown in the order in which it is accessed from the control unit display is presented in outline form in figure 6.4-1 Each indentation to the right represents a menu level below the indicated title.

MX28B600 specifications

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