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MX28B-400 +24V Product Manual
26 990-9218
[SYSTEM/IN-RLY/ALIAS]. For information on wiring connections to these inputs refer to
Section 5.6.1.
6.3 Alarm 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.
6.4 Parameter Locations, Descriptions, and Default Values
The location, description, and factory programmed default value for each of the MX28B system
parameters is found in Table 6.4-1. 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.